10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549  

FORM 10-Q

(Mark One)

☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended September 30, 2020

or

☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from__________ to __________

Commission file number: 001-32550   

WESTERN ALLIANCE BANCORPORATION

(Exact name of registrant as specified in its charter)

Delaware	88-0365922
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

One E. Washington Street, Suite 1400	Phoenix	Arizona	85004
(Address of principal executive offices)			(Zip Code)

(602) 389-3500

(Registrant’s telephone number, including area code) 

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.0001 Par Value	WAL	New York Stock Exchange
6.25% Subordinated Debentures due 2056	WALA	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ý    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated filer	☐
Non accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨ 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ☒

As of October 26, 2020, Western Alliance Bancorporation had 100,829,164 shares of common stock outstanding.

INDEX

		Page
PART I. FINANCIAL INFORMATION
Item 1.	Glossary of Entities and Terms	3
	Financial Statements (Unaudited)
	Consolidated Balance Sheets	4
	Consolidated Income Statements	5
	Consolidated Statements of Comprehensive Income	7
	Consolidated Statements of Stockholders’ Equity	8
	Consolidated Statements of Cash Flows	9
	Notes to Unaudited Consolidated Financial Statements	11
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	68
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	100
Item 4.	Controls and Procedures	103
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	103
Item 1A.	Risk Factors	104
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	105
Item 5.	Other Information	106
Item 6.	Exhibits	107
SIGNATURES		108

2

PART I

GLOSSARY OF ENTITIES AND TERMS

The acronyms and abbreviations identified below are used in various sections of this Form 10-Q, including "Management's Discussion and Analysis of Financial Condition and Results of Operations," in Item 2 and the Consolidated Financial Statements and the Notes to Unaudited Consolidated Financial Statements in Item 1 of this Form 10-Q.

ENTITIES / DIVISIONS:
ABA	Alliance Bank of Arizona	HOA Services	Homeowner Associations Services
BON	Bank of Nevada	LVSP	Las Vegas Sunset Properties
Bridge	Bridge Bank	TPB	Torrey Pines Bank
Company	Western Alliance Bancorporation and subsidiaries	WA PWI	Western Alliance Public Welfare Investments, LLC
CSI	CS Insurance Company	WAB or Bank	Western Alliance Bank
FIB	First Independent Bank	WABT	Western Alliance Business Trust
HFF	Hotel Franchise Finance	WAL or Parent	Western Alliance Bancorporation
TERMS:
AFS	Available-for-Sale	HELOC	Home Equity Line of Credit
ALCO	Asset and Liability Management Committee	HFI	Held for Investment
AOCI	Accumulated Other Comprehensive Income	HTM	Held-to-Maturity
APIC	Additional paid in capital	ICS	Insured Cash Sweep Service
ASC	Accounting Standards Codification	IRC	Internal Revenue Code
ASU	Accounting Standards Update	ISDA	International Swaps and Derivatives Association
Basel III	Banking Supervision's December 2010 final capital framework	LGD	Loss Given Default
BOD	Board of Directors	LIBOR	London Interbank Offered Rate
BSA	Bank Secrecy Act	LIHTC	Low-Income Housing Tax Credit
CARES Act	Coronavirus Aid, Relief and Economic Security Act	MBS	Mortgage-Backed Securities
CDARS	Certificate Deposit Account Registry Service	MSLP	Main Street Lending Program
CDO	Collateralized Debt Obligation	NBL	National Business Lines
CECL	Current Expected Credit Losses	NOL	Net Operating Loss
CEO	Chief Executive Officer	NPV	Net Present Value
CFO	Chief Financial Officer	OCI	Other Comprehensive Income
COVID-19	Coronavirus Disease 2019	OREO	Other Real Estate Owned
CRA	Community Reinvestment Act	OTTI	Other-than-Temporary Impairment
CRE	Commercial Real Estate	PCI	Purchased Credit Impaired
EAD	Exposure at Default	PD	Probability of Default
EPS	Earnings per share	PPNR	Pre-Provision Net Revenue
EVE	Economic Value of Equity	PPP	Paycheck Protection Program
Exchange Act	Securities Exchange Act of 1934, as amended	PPPFA	Paycheck Protection Program Flexibility Act
FASB	Financial Accounting Standards Board	REIT	Real Estate Investment Trust
FDIC	Federal Deposit Insurance Corporation	ROU	Right of use
FHLB	Federal Home Loan Bank	SBA	Small Business Administration
FHLMC	Federal Home Loan Mortgage Corporation	SBIC	Small Business Investment Company
FinCEN	Financial Crimes Enforcement Network	SEC	Securities and Exchange Commission
FNMA	Federal National Mortgage Association	SERP	Supplemental Executive Retirement Plan
FOMC	Federal Open Market Committee	SOFR	Secured Overnight Financing Rate
FRB	Federal Reserve Bank	SR	Supervision and Regulation Letters
FVO	Fair Value Option	TDR	Troubled Debt Restructuring
GAAP	U.S. Generally Accepted Accounting Principles	TEB	Tax Equivalent Basis
GNMA	Government National Mortgage Association	TSR	Total Shareholder Return
GSE	Government-Sponsored Enterprise	XBRL	eXtensible Business Reporting Language

3

Item 1.Financial Statements

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

	September 30, 2020		December 31, 2019
	(Unaudited)
	(in thousands, except shares and per share amounts)
Assets:
Cash and due from banks	$	163,893	$	185,977
Interest-bearing deposits in other financial institutions	1,254,842		248,619
Cash, cash equivalents, and restricted cash	1,418,735		434,596
Investment securities - AFS, at fair value; amortized cost of $3,876,586 at September 30, 2020 and $3,317,928 at December 31, 2019	3,975,225		3,346,310
Investment securities - HTM, at amortized cost; fair value of $548,140 at September 30, 2020 and $516,261 at December 31, 2019	504,477		485,107
Less: allowance for credit losses	(5,964)		—
Net HTM investment securities	498,513		485,107
Investment securities - equity	160,561		138,701
Investments in restricted stock, at cost	66,843		66,509
Loans - HFS	20,764		21,803
Loans, net of deferred loan fees and costs	25,993,254		21,101,493
Less: allowance for credit losses	(310,560)		(167,797)
Net loans held for investment	25,682,694		20,933,696
Premises and equipment, net	128,256		125,838
Operating lease right of use asset	71,393		72,558
Bank owned life insurance	175,478		174,046
Goodwill and intangible assets, net	298,987		297,608
Deferred tax assets, net	46,645		18,025
Investments in LIHTC and renewable energy	414,305		409,365
Other assets	377,107		297,786
Total assets	$	33,335,506	$	26,821,948
Liabilities:
Deposits:
Non-interest-bearing demand	$	13,013,014	$	8,537,905
Interest-bearing	15,830,382		14,258,588
Total deposits	28,843,396		22,796,493
Customer repurchase agreements	19,688		16,675
Other borrowings	10,000		—
Qualifying debt	618,772		393,563
Operating lease liability	78,613		78,112
Other liabilities	540,991		520,357
Total liabilities	30,111,460		23,805,200
Commitments and contingencies (Note 11)
Stockholders’ equity:
Common stock - par value $0.0001; 200,000,000 authorized; 102,993,777 shares issued at September 30, 2020 and 104,527,544 at December 31, 2019	10		10
Treasury stock, at cost (2,168,437 shares at September 30, 2020 and 2,003,873 shares at December 31, 2019)	(71,098)		(62,728)
Additional paid in capital	1,383,537		1,374,141
Accumulated other comprehensive income	78,585		25,008
Retained earnings	1,833,012		1,680,317
Total stockholders’ equity	3,224,046		3,016,748
Total liabilities and stockholders’ equity	$	33,335,506	$	26,821,948

See accompanying Notes to Unaudited Consolidated Financial Statements.

4

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES

CONSOLIDATED INCOME STATEMENTS

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands, except per share amounts)
Interest income:
Loans, including fees	$	276,623	$	278,932	$	843,085	$	808,099
Investment securities	26,323		28,928		79,778		84,929
Dividends	1,397		1,289		4,305		4,452
Other	500		6,459		3,129		12,144
Total interest income	304,843		315,608		930,297		909,624
Interest expense:
Deposits	12,215		43,354		59,736		121,030
Other borrowings	5		34		75		1,344
Qualifying debt	7,872		5,785		17,833		17,898
Other	13		13		495		913
Total interest expense	20,105		49,186		78,139		141,185
Net interest income	284,738		266,422		852,158		768,439
Provision for credit losses	14,661		3,803		157,837		15,303
Net interest income after provision for credit losses	270,077		262,619		694,321		753,136
Non-interest income:
Service charges and fees	5,913		5,888		17,447		17,121
Card income	1,873		1,729		4,768		5,195
Foreign currency income	1,755		1,321		4,242		3,564
Income from bank owned life insurance	1,345		979		8,977		2,938
Income from equity investments	1,186		3,742		6,263		6,619
Lending related income and gains on sale of loans, net	705		539		2,072		1,343
Gain on sales of investment securities, net	—		3,152		230		3,152
Fair value gain (loss) adjustments on assets measured at fair value, net	5,882		222		(986)		4,628
Other income	1,947		1,869		3,972		4,509
Total non-interest income	20,606		19,441		46,985		49,069
Non-interest expense:
Salaries and employee benefits	78,757		70,978		220,455		205,328
Legal, professional, and directors' fees	10,034		8,248		31,105		26,885
Occupancy	9,426		8,263		25,752		24,251
Data processing	8,864		7,095		26,044		20,563
Deposit costs	3,246		11,537		14,098		24,930
Insurance	3,064		3,071		9,506		8,691
Loan and repossessed asset expenses	1,771		1,953		5,280		5,419
Business development	950		1,443		4,062		4,972
Marketing	848		842		2,621		2,640
Card expense	505		548		1,631		1,892
Intangible amortization	373		387		1,120		1,161
Net loss (gain) on sales / valuations of repossessed and other assets	123		3,379		(1,335)		2,856
Other expense	6,131		8,408		19,033		22,691
Total non-interest expense	124,092		126,152		359,372		352,279
Income before provision for income taxes	166,591		155,908		381,934		449,926
Income tax expense	30,822		28,533		68,929		78,819
Net income	$	135,769	$	127,375	$	313,005	$	371,107

5

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands, except per share amounts)
Earnings per share:
Basic	$	1.36	$	1.25	$	3.12	$	3.60
Diluted	1.36		1.24		3.11		3.59
Weighted average number of common shares outstanding:
Basic	99,850		102,041		100,322		103,024
Diluted	100,059		102,451		100,574		103,468
Dividends declared per common share	$	0.25	$	0.25	$	0.75	$	0.25

See accompanying Notes to Unaudited Consolidated Financial Statements.

6

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Net income	$	135,769	$	127,375	$	313,005	$	371,107
Other comprehensive income, net:
Unrealized gain on AFS securities, net of tax effect of $(2,520), $(3,592), $(17,310), $(25,523), respectively	7,592		11,014		53,176		78,314
Unrealized (loss) on SERP, net of tax effect of $1, $6, $94, $18, respectively	(3)		(18)		(296)		(53)
Unrealized (loss) gain on junior subordinated debt, net of tax effect of $874, $(196)$, $(285), $2,173, respectively	(2,681)		598		871		(6,664)
Realized (gain) on sale of AFS securities included in income, net of tax effect of $0, $776, $56, $776, respectively	—		(2,376)		(174)		(2,376)
Net other comprehensive income	4,908		9,218		53,577		69,221
Comprehensive income	$	140,677	$	136,593	$	366,582	$	440,328

See accompanying Notes to Unaudited Consolidated Financial Statements.

7

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

	Three Months Ended September 30,
	Common Stock			Additional Paid in Capital		Treasury Stock		Accumulated Other Comprehensive Income (Loss)		Retained Earnings		Total Stockholders’ Equity
	Shares	Amount
	(in thousands)
Balance, June 30, 2019	103,654	$	10	$	1,372,037	$	(61,134)	$	26,381	$	1,513,970	$	2,851,264
Net income	—	—		—		—		—		127,375		127,375
Exercise of stock options	1	—		19		—		—		—		19
Restricted stock, performance stock units, and other grants, net	17	—		6,060		—		—		—		6,060
Restricted stock surrendered (1)	(33)	—		—		(1,531)		—		—		(1,531)
Stock repurchase	(1,000)	—		(9,925)		—		—		(33,733)		(43,658)
Dividends paid	—	—		—		—		—		(25,684)		(25,684)
Other comprehensive income, net	—	—		—		—		9,218		—		9,218
Balance, September 30, 2019	102,639	$	10	$	1,368,191	$	(62,665)	$	35,599	$	1,581,928	$	2,923,063
Balance, June 30, 2020	100,849	$	10	$	1,376,859	$	(70,583)	$	73,677	$	1,722,451	$	3,102,414
Net income	—	—		—		—		—		135,769		135,769
Exercise of stock options	2	—		73		—		—		—		73
Restricted stock, performance stock unit, and other grants, net	(12)	—		6,605		—		—		—		6,605
Restricted stock surrendered (1)	(14)	—		—		(515)		—		—		(515)
Dividends paid	—	—		—		—		—		(25,208)		(25,208)
Other comprehensive income, net	—	—		—		—		4,908		—		4,908
Balance, September 30, 2020	100,825	$	10	$	1,383,537	$	(71,098)	$	78,585	$	1,833,012	$	3,224,046
	Nine Months Ended September 30,
	Common Stock			Additional Paid in Capital		Treasury Stock		Accumulated Other Comprehensive (Loss) Income		Retained Earnings		Total Stockholders’ Equity
	Shares	Amount
	(in thousands)
Balance, December 31, 2018	104,949	$	10	$	1,417,724	$	(53,083)	$	(33,622)	$	1,282,705	$	2,613,734
Net income	—	—		—		—		—		371,107		371,107
Exercise of stock options	2	—		55		—		—		—		55
Restricted stock, performance stock unit, and other grants, net	631	—		19,783		—		—		—		19,783
Restricted stock surrendered (1)	(209)	—		—		(9,582)		—		—		(9,582)
Stock repurchase	(2,734)	—		(69,371)		—		—		(46,200)		(115,571)
Dividends paid	—	—		—		—		—		(25,684)		(25,684)
Other comprehensive income, net	—	—		—		—		69,221		—		69,221
Balance, September 30, 2019	102,639	$	10	$	1,368,191	$	(62,665)	$	35,599	$	1,581,928	$	2,923,063
Balance, December 31, 2019	102,524	$	10	$	1,374,141	$	(62,728)	$	25,008	$	1,680,317	$	3,016,748
Balance, January 1, 2020 (2)	102,524	10		1,374,141		(62,728)		25,008		1,655,370		2,991,801
Net income	—	—		—		—		—		313,005		313,005
Exercise of stock options	9	—		170		—		—		—		170
Restricted stock, performance stock units, and other grants, net	523	—		21,560		—		—		—		21,560
Restricted stock surrendered (1)	(165)	—		—		(8,370)		—		—		(8,370)
Stock repurchase	(2,066)	—		(12,334)		—		—		(59,335)		(71,669)
Dividends paid	—	—		—		—		—		(76,028)		(76,028)
Other comprehensive income, net	—	—		—		—		53,577		—		53,577
Balance, September 30, 2020	100,825	$	10	$	1,383,537	$	(71,098)	$	78,585	$	1,833,012	$	3,224,046

(1)Share amounts represent Treasury Shares, see "Note 1. Summary of Significant Accounting Policies" for further discussion.    

(2)As adjusted for adoption of ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The cumulative effect of adoption of this guidance at January 1, 2020 resulted in a decrease to retained earnings of $24.9 million due to an increase in the allowance for credit losses. See "Note 1. Summary of Significant Accounting Policies for further discussion."

See accompanying Notes to Unaudited Consolidated Financial Statements.

8

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Nine Months Ended September 30,
	2020		2019
	(in thousands)
Cash flows from operating activities:
Net income	$	313,005	$	371,107
Adjustments to reconcile net income to cash provided by operating activities:
Provision for credit losses	157,837		15,303
Depreciation and amortization	17,122		14,904
Stock-based compensation	21,560		19,783
Deferred income taxes	(37,414)		5,757
Amortization of net premiums for investment securities	19,015		11,031
Amortization of tax credit investments	34,244		33,551
Amortization of operating lease right of use asset	8,874		7,704
Amortization of net deferred loan fees and net purchase premiums	(34,085)		(31,838)
Income from bank owned life insurance	(3,370)		(2,938)
(Gains) / Losses on:
Sales of investment securities	(230)		(3,152)
Assets measured at fair value, net	986		(4,628)
Sale of loans	—		530
BOLI	(5,607)		—
Sales / valuations of repossessed and other assets, net	(1,335)		2,856
Changes in other assets and liabilities, net	(40,486)		94,535
Net cash provided by operating activities	$	450,116	$	534,505
Cash flows from investing activities:
Investment securities - AFS
Purchases	$	(1,720,604)	$	(746,445)
Principal pay downs and maturities	1,014,380		453,307
Proceeds from sales	156,629		150,377
Investment securities - HTM
Purchases	(106,772)		(100,460)
Principal pay downs and maturities	16,894		18,206
Proceeds from sales	—		10,000
Equity securities carried at fair value
Purchases	(31,075)		(10,662)
Redemption of principal (reinvestment of dividends)	7,003		4,535
Purchase of investment tax credits	(103,365)		(88,074)
Proceeds from (purchase of) SBIC investments	1,463		(5,298)
Purchase of money market investments, net	—		7
Proceeds from bank owned life insurance, net	6,011		—
Purchase of restricted stock	(334)		(244)
Net increase in loans	(4,806,138)		(2,445,769)
Purchase of premises, equipment, and other assets, net	(33,103)		(15,282)
Proceeds from sale of other real estate owned and repossessed assets, net	7,073		628
Net cash used in investing activities	$	(5,591,938)	$	(2,775,174)

9

	Nine Months Ended September 30,
	2020		2019
	(in thousands)
Cash flows from financing activities:
Net increase in deposits	$	6,046,903	$	3,263,367
Net proceeds from issuance of subordinated debt	221,942		—
Net increase (decrease) in borrowings	13,013		(498,429)
Proceeds from exercise of common stock options	170		55
Cash paid for tax withholding on vested restricted stock	(8,370)		(9,582)
Common stock repurchases	(71,669)		(115,571)
Cash dividends paid on common stock	(76,028)		(25,684)
Net cash provided by financing activities	$	6,125,961	$	2,614,156
Net increase in cash, cash equivalents, and restricted cash	984,139		373,487
Cash, cash equivalents, and restricted cash at beginning of period	434,596		498,572
Cash, cash equivalents, and restricted cash at end of period	$	1,418,735	$	872,059
Supplemental disclosure:
Cash paid (received) during the period for:
Interest	$	87,134	$	144,680
Income taxes, net of refunds	37,069		(26,228)

See accompanying Notes to Unaudited Consolidated Financial Statements.

10

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of operation

WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.

WAB operates the following full-service banking divisions: ABA, BON, FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services. In addition, the Company has two non-bank subsidiaries: LVSP, which held and managed certain OREO properties, and CSI, a captive insurance company formed and licensed under the laws of the State of Arizona and established as part of the Company's overall enterprise risk management strategy.

Basis of presentation

The accounting and reporting policies of the Company are in accordance with GAAP and conform to practices within the financial services industry. The accounts of the Company and its consolidated subsidiaries are included in the Consolidated Financial Statements.

Recent accounting pronouncements

Convertible Debt and Derivatives and Hedging

In August 2020, the FASB issued guidance within ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40). The amendments in this update affect entities that issue convertible instruments and/or contracts indexed to and potentially settled in an entity’s own equity. The new ASU simplifies the convertible accounting framework through elimination of the beneficial conversion and cash conversion accounting models for convertible instruments. It also amends the accounting for certain contracts in an entity’s own equity that are currently accounted for as derivatives because of specific settlement provisions. In addition, the new guidance modifies how particular convertible instruments and certain contracts that may be settled in cash or shares impact the diluted EPS computation. The amendments to Subtopics 470 and 815 are effective for interim and annual reporting periods beginning after December 15, 2021 and are not expected to have a material impact on the Company’s Consolidated Financial Statements.

Income Taxes

In December 2019, the FASB issued guidance within ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in ASU 2019-12 are intended to reduce the cost and complexity of applying ASC 740. The amendments that are applicable to the Company address: 1) franchise and other taxes partially based on income; 2) step-up in basis of goodwill in a business combination; 3) allocation of tax expense in separate entity financial statements; and 4) interim recognition of enactment of tax laws or rate changes. The amendments to Topic 740 are effective for interim and annual reporting periods beginning after December 15, 2020 and are not expected to have a material impact on the Company’s Consolidated Financial Statements.

Recently adopted accounting guidance

Measurement of Credit Losses on Financial Instruments

In June 2016, the FASB issued guidance within ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The new standard significantly changes the impairment model for most financial assets that are measured at amortized cost, including off-balance sheet credit exposures, from an incurred loss model to an expected loss model. The amendments in ASU 2016-13 to Topic 326, Financial Instruments - Credit Losses, require that an organization measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The ASU also requires enhanced disclosures, including qualitative and quantitative disclosures that provide additional information about the amounts recorded in the financial statements. Additionally, the ASU amends the accounting for credit losses on AFS debt securities and purchased financial assets with credit deterioration.

The Company adopted the amendments within ASU 2016-13 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. The Company's financial results for reporting periods

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beginning after January 1, 2020 are presented in accordance with ASC 326, while prior-period amounts continue to be reported in accordance with legacy GAAP. The Company recorded a cumulative effect adjustment to retained earnings, which resulted in a total decrease to retained earnings of $24.9 million as of January 1, 2020. This adjustment was due primarily to expected total losses under the new model in the Company's loan portfolio and, to a lesser extent, its off-balance sheet credit exposures.

The Company applied the prospective transition approach for loans purchased with credit deterioration that were previously classified as purchased credit impaired and previously accounted for under ASC 310-30. In accordance with the new standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. As of January 1, 2020, the amortized cost basis of the PCD loans was adjusted to reflect an allowance for credit losses of $3.3 million. The remaining noncredit discount (based on the adjusted amortized cost basis) related to PCD loans of $1.1 million will be accreted into interest income at the loan's effective interest rate as of January 1, 2020. The Company has elected not to maintain its pools of loans accounted for under ASC 310-30.

The Company applied the prospective transition approach for debt securities for which other-than-temporary impairment had been recognized prior to January 1, 2020. As a result, the amortized cost basis remains the same before and after the effective date. The effective interest rate on these debt securities was not changed. Recoveries of amounts previously written off relating to improvements in cash flows after January 1, 2020 will be recorded in earnings when received.

The following table summarizes the estimated allowance for credit losses related to financial assets and off-balance sheet credit exposures and the corresponding impacts on the deferred tax asset and retained earnings upon adoption of ASC 326:

	January 1, 2020
	Pre-ASC 326 Adoption		Post-ASC 326 Adoption		Impact of ASC 326 Adoption
	(in thousands)
Assets:
Allowance for credit losses on HTM securities	$	—	$	2,646	$	2,646
Allowance for credit losses on loans	167,797		186,925		19,128
Deferred tax asset	18,025		26,675		8,650
Liabilities:
Off-balance sheet credit exposures	$	8,955	$	24,044	$	15,089
Equity:
Retained earnings	$	1,680,317	$	1,655,370	$	(24,947)

Management has elected to take advantage of the capital relief option that delays the estimated impact of the adoption of ASC 326 on regulatory capital by up to two years, with a three-year transition period to phase out the cumulative benefit to regulatory capital provided during the two-year delay.

In April 2019, the FASB issued guidance within ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. The amendments in ASU 2019-04 clarify or correct the guidance in these Topics. With respect to Topic 326, ASU 2019-04 addresses a number of issues as it relates to the CECL standard including consideration of accrued interest, recoveries, variable-rate financial instruments, prepayments, and extension and renewal options, among other things, in the measurement of expected credit losses. The amendments to Topic 326 were adopted concurrently with ASU 2016-13 and did not have a significant impact on the Company’s Consolidated Financial Statements. With respect to Topic 815, Derivatives and Hedging, ASU 2019-04 clarifies issues related to partial-term hedges, hedged debt securities, and transitioning from a quantitative method of assessing hedge effectiveness to a more simplified method. The Company does not have partial-term hedges or any hedged debt securities and the transition issues discussed in the ASU 2019-04 are not applicable to the Company. Accordingly, the amendments to Topic 815 did not have an impact on the Company's Consolidated Financial Statements. With respect to Topic 825, Financial Instruments, on recognizing and measuring financial instruments, ASU 2019-04 addresses: 1) the scope of the guidance; 2) the requirement for remeasurement under ASC 820 when using the measurement alternative for equity securities without readily determinable fair values; 3) certain disclosure requirements; and 4) which equity securities have to be remeasured at historical exchange rates. The amendments to Topic 825 were effective January 1, 2020 and did not have a material impact on the Company’s Consolidated Financial Statements.

In May 2019, the FASB issued guidance within ASU 2019-05, Financial Instruments - Credit Losses, to provide entities with an option to irrevocably elect the fair value option for eligible financial assets measured at amortized cost. The election is to be applied on an instrument-by-instrument basis upon adoption of Topic 326 and is not available for either AFS or HTM debt securities. The amendments in ASU 2019-05 should be applied on a modified-retrospective basis through a cumulative-effect

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adjustment to the opening balance of retained earnings as of the date that an entity adopts the amendments in ASU 2016-13. The Company did not elect this fair value option as part of its adoption of ASU 2016-13 on January 1, 2020.

In November 2019, the FASB issued guidance within ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments—Credit Losses. The amendments in ASU 2019-11 clarify or address specific issues about certain aspects of the amendments in ASU 2016-13. These issues include measurement and reporting requirements related to: 1) the allowance for credit losses for purchased assets with credit deterioration; 2) prepayment assumptions on existing troubled debt restructurings; 3) extension of disclosure relief for accrued interest receivable balances; and 4) expected credit losses on collateralized financial assets. The adoption of ASU 2019-11 is concurrent with ASU 2016-13 and, adoption of these amendments on January 1, 2020, did not have a significant impact on the Company's Consolidated Financial Statements.

Fair Value Measurements

In August 2018, the FASB issued guidance within ASU 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. The amendments within ASU 2018-13 remove, modify, and supplement the disclosure requirements for fair value measurements. Disclosure requirements that were removed include: 1) the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy; 2) the policy for timing of transfers between levels; and 3) the valuation processes for Level 3 fair value measurements. The amendments clarify that the measurement uncertainty disclosure is intended to communicate information about the uncertainty in measurement as of the reporting date. Additional disclosure requirements include: 1) the changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period; and 2) the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. With the exception of the above additional disclosure requirements, which will be applied prospectively, all other amendments should be applied retrospectively to all periods presented upon their effective date. The amendments in this ASU did not have a significant impact on the Company's Consolidated Financial Statements.

Internal-Use Software

In August 2018, the FASB issued guidance within ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40). The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). Accordingly, the amendments in this Update require an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The amendments in this Update also require that the capitalized implementation costs of a hosting arrangement that is a service contract be expensed over the term of the hosting arrangement. Presentation requirements include: 1) expense related to the capitalized implementation costs should be presented in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement; 2) payments for capitalized implementation costs in the statement of cash flows should be classified in the same manner as payments made for fees associated with the hosting element; and 3) capitalized implementation costs in the statement of financial position should be presented in the same line item that a prepayment for the fees of the associated hosting arrangement would be presented. The adoption of this guidance did not have a significant impact on the Company's Consolidated Financial Statements.

Reference Rate Reform

In March 2020, the FASB issued guidance within ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, in response to the scheduled discontinuation of LIBOR on December 31, 2021. The amendments in this Update provide optional guidance designed to provide relief from the accounting analysis and impacts that may otherwise be required for modifications to agreements (e.g., loans, debt securities, derivatives, borrowings) necessitated by reference rate reform.

The following optional expedients for applying the requirements of certain Topics or Industry Subtopics in the Codification are permitted for contracts that are modified because of reference rate reform and that meet certain scope guidance: 1) modifications of contracts within the scope of Topics 310, Receivables, and 470, Debt, should be accounted for by prospectively adjusting the effective interest rate; 2) modifications of contracts within the scope of Topic 842, Leases, should be accounted for as a continuation of the existing contracts with no reassessments of the lease classification and the discount rate or remeasurements of lease payments that otherwise would be required under this Topic for modifications not accounted for as separate contracts; 3) modifications of contracts do not require an entity to reassess its original conclusion about whether that contract contains an embedded derivative that is clearly and closely related to the economic characteristics and risks of the host contract under Subtopic 815-15, Derivatives and Hedging- Embedded Derivatives; and 4) for other Topics or Industry Subtopics in the Codification, the amendments in this Update also include a general principle that permits an entity to consider

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contract modifications due to reference rate reform to be an event that does not require contract remeasurement at the modification date or reassessment of a previous accounting determination. An entity may make a one-time election to sell, transfer, or both sell and transfer debt securities classified as held to maturity that reference a rate affected by reference rate reform and that are classified as held to maturity before January 1, 2020.

The amendments in this Update are effective for all entities as of March 12, 2020 through December 31, 2022.

Use of estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management's estimates and judgments are ongoing and are based on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities, as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from those estimates and assumptions used in the Consolidated Financial Statements and related notes. Material estimates that are susceptible to significant changes in the near term, particularly to the extent that economic conditions worsen or persist longer than expected in an adverse state, relate to: the determination of the allowance for credit losses; certain assets and liabilities carried at fair value; and accounting for income taxes.

Principles of consolidation

As of September 30, 2020, WAL has the following significant wholly-owned subsidiaries: WAB and eight unconsolidated subsidiaries used as business trusts in connection with the issuance of trust-preferred securities.

The Bank has the following significant wholly-owned subsidiaries: WABT, which holds certain investment securities, municipal and nonprofit loans, and leases; WA PWI, which holds interests in certain limited partnerships invested primarily in low income housing tax credits and small business investment corporations; Helios Prime, which holds interests in certain limited partnerships invested in renewable energy projects; and BW Real Estate, Inc., which operates as a real estate investment trust and holds certain of WAB's real estate loans and related securities.

The Company does not have any other significant entities that should be consolidated. All significant intercompany balances and transactions have been eliminated in consolidation.

Reclassifications

Certain amounts reported in prior periods may have been reclassified in the Consolidated Financial Statements to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.

Interim financial information

The accompanying Unaudited Consolidated Financial Statements as of and for the three and nine months ended September 30, 2020 and 2019 have been prepared in condensed format and, therefore, do not include all of the information and footnotes required by GAAP for complete financial statements. These statements have been prepared on a basis that is substantially consistent with the accounting principles applied to the Company's audited Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2019.

The information furnished in these interim statements reflects all adjustments that are, in the opinion of management, necessary for a fair statement of the results for each respective period presented. Such adjustments are of a normal, recurring nature. The results of operations in the interim statements are not necessarily indicative of the results that may be expected for any other quarter or for the full year. The interim financial information should be read in conjunction with the Company's audited Consolidated Financial Statements.

Investment securities

Investment securities include debt and equity securities. Debt securities may be classified as HTM, AFS, or trading. The appropriate classification is initially decided at the time of purchase. Securities classified as HTM are those debt securities that the Company has both the intent and ability to hold to maturity regardless of changes in market conditions, liquidity needs, or general economic conditions. The sale of an HTM security within three months of its maturity date or after the majority of the principal outstanding has been collected is considered a maturity for purposes of classification and disclosure. Securities classified as AFS are securities that the Company intends to hold for an indefinite period of time, but not necessarily to

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maturity. Any decision to sell a security classified as AFS would be based on various factors, including significant movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, decline in credit quality, and regulatory capital considerations.

HTM securities are carried at amortized cost. AFS securities are carried at their estimated fair value, with unrealized holding gains and losses reported in other comprehensive income, net of tax. When AFS debt securities are sold, the unrealized gains or losses are reclassified from OCI to non-interest income. Trading securities are carried at their estimated fair value, with changes in fair value reported in earnings as part of non-interest income.

Equity securities are carried at their estimated fair value, with changes in fair value reported in earnings as part of non-interest income.

Interest income is recognized based on the coupon rate and includes the amortization of purchase premiums and the accretion of purchase discounts. Premiums and discounts on investment securities are generally amortized or accreted over the contractual life of the security using the interest method. For the Company's mortgage-backed securities, amortization or accretion of premiums or discounts are adjusted for anticipated prepayments. Gains and losses on the sale of investment securities are recorded on the trade date and determined using the specific identification method.

A debt security is placed on nonaccrual status at the time its principal or interest payments become 90 days past due. Interest accrued but not received for a security placed on nonaccrual is reversed against interest income.

Allowance for credit losses on investment securities

On January 1, 2020, the Company adopted the amendments within ASU 2016-13, which replaces the legacy US GAAP OTTI model with a credit loss model. For discussion of the former OTTI methodology, refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2019. The credit loss model under ASC 326-20, applicable to HTM debt securities, requires recognition of lifetime expected credit losses through an allowance account at the time the security is purchased. The Company measures expected credit losses on its HTM debt securities on a collective basis by major security type. The Company's HTM securities portfolio consists of low income housing tax-exempt bonds, which share similar risk characteristics with the Company's CRE, non-owner occupied or construction and land loan pools, given the similarity in underlying assets or collateral. Accordingly, expected credit losses on HTM securities are estimated using the same models and approaches as these loan pools, which utilize risk parameters (probability of default, loss given default, and exposure at default) in the measurement of expected credit losses. The historical data used to estimate probability of default and severity of loss in the event of default is derived or obtained from internal and external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical losses. Accrued interest receivable on the HTM securities, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses.

The credit loss model under ASC 326-30, applicable to AFS debt securities, requires recognition of credit losses through an allowance account, but retains the concept from the OTTI model that credit losses are recognized once securities become impaired. For AFS debt securities, a decline in fair value due to credit loss results in recognition of an allowance for credit losses. Impairment may result from credit deterioration of the issuer or collateral underlying the security. The assessment of determining if a decline in fair value resulted from a credit loss is performed at the individual security level. Among other factors, the Company considers: 1) the extent to which the fair value is less than the amortized cost basis; 2) the financial condition and near term prospects of the issuer, including consideration of relevant financial metrics or ratios of the issuer; 3) any adverse conditions related to an industry or geographic area of an issuer; 4) any changes to the rating of the security by a rating agency; and 5) any past due principal or interest payments from the issuer. If an assessment of the above factors indicates that a credit loss exists, the Company records an allowance for credit losses for the excess of the amortized cost basis over the present value of cash flows expected to be collected, limited to the amount that the security's fair value is less than its amortized cost basis. Subsequent changes in the allowance for credit losses are recorded as a provision for (or reversal of) credit loss expense. Interest accruals and amortization and accretion of premiums and discounts are suspended when the credit loss is recognized in earnings. Any interest received after the security has been placed on nonaccrual status is recognized on a cash basis. Accrued interest receivable on AFS securities, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses.

For each AFS security in an unrealized loss position, the Company also considers: 1) its intent to retain the security until anticipated recovery of the security's fair value; and 2) whether it is more-likely-than not that the Company would be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the debt security is written down to its fair value and the write-down is charged against the allowance for credit losses with any incremental impairment recorded in earnings.

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Writeoffs are made through reversal of the allowance for credit losses and direct writeoff of the amortized cost basis of the AFS security. The Company considers the following events to be indicators that a writeoff should be taken: 1) bankruptcy of the issuer; 2) significant adverse event(s) affecting the issuer in which it is improbable for the issuer to make its remaining payments on the security; and 3) significant loss of value of the underlying collateral behind a security. Recoveries on debt securities, if any, are recorded in the period received.

Restricted stock

WAB is a member of the Federal Reserve System and, as part of its membership, is required to maintain stock in the FRB in a specified ratio to its capital. In addition, WAB is a member of the FHLB system and, accordingly, maintains an investment in capital stock of the FHLB based on the borrowing capacity used. These investments are considered equity securities with no actively traded market. Therefore, the shares are considered restricted investment securities. These investments are carried at cost, which is equal to the value at which they may be redeemed. The dividend income received from the stock is reported in interest income. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. No impairment has been recorded to date.

Loans held for sale

Loans held for sale consist of loans that the Company originates (or acquires) and intends to sell. These loans are carried at the lower of aggregate cost or fair value. Fair value is determined based on quoted fair market values or, when not available, discounted cash flows or appraisals of underlying collateral or the credit quality of the borrower.

Loans held for investment

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost. Amortized cost is the amount of unpaid principal, adjusted for unamortized net deferred fees and costs, premiums and discounts, and writeoffs. In addition, the amortized cost of loans subject to a fair value hedge are adjusted for changes in value attributable to the effective portion of the hedged benchmark interest rate risk.

The Company may also purchase loans or acquire loans through a business combination. At the purchase or acquisition date, loans are evaluated to determine if there has been more than insignificant credit deterioration since origination. Loans that have experienced more than insignificant credit deterioration since origination are referred to as PCD loans. In its evaluation of whether a loan has experienced more than insignificant deterioration in credit quality since origination, the Company takes into consideration loan grades, loan-to-values greater than policy limits, past due and nonaccrual status, and TDR loans. The Company may also consider external credit rating agency ratings for borrowers and for non-commercial loans, FICO score or band, probability of default levels, number of times past due, and standard deviations corresponding to FICO score or band. The initial estimate of credit losses on PCD loans is added to the purchase price on the acquisition date to establish the initial amortized cost basis of the loan; accordingly, the initial recognition of expected credit losses has no impact on net income. When the initial measurement of expected credit losses on PCD loans are calculated on a pooled loan basis, the expected credit losses are allocated to each loan within the pool. Any difference between the initial amortized cost basis and the unpaid principal balance of the loan represents a noncredit discount or premium, which is accreted (or amortized) into interest income over the life of the loan. Subsequent changes to the allowance for credit losses on PCD loans are recorded through the provision for credit losses. For purchased loans that are not deemed to have experienced more than insignificant credit deterioration since origination, any discounts or premiums included in the purchase price are accreted (or amortized) over the contractual life of the individual loan. For additional information, see "Note 3. Loans, Leases and Allowance for Credit Losses" of these Notes to Unaudited Consolidated Financial Statements.

In applying the effective yield method to loans, the Company generally applies the contractual method whereby loan fees collected for the origination of loans less direct loan origination costs (net of deferred loan fees), as well as premiums and discounts and certain purchase accounting adjustments, are amortized over the contractual life of the loan through interest income. If a loan has scheduled payments, the amortization of the net deferred loan fee is calculated using the interest method over the contractual life of the loan. If a loan does not have scheduled payments, such as a line of credit, the net deferred loan fee is recognized as interest income on a straight-line basis over the contractual life of the loan commitment. Commitment fees based on a percentage of a customer’s unused line of credit and fees related to standby letters of credit are recognized over the commitment period. When loans are repaid, any remaining unamortized balances of premiums, discounts, or net deferred fees are recognized as interest income.

Conversely, with respect to loans originated under the PPP, the Company incorporates projected prepayments in calculating effective yield. As a result, net deferred fees are accreted into interest income faster than would be the case when applying the contractual method based upon the timing and amount of estimated forgiven loan balances. The Company expects that a

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majority of PPP loans will qualify for forgiveness under the SBA program, based on requested loan amounts largely representing qualifying expenses at the time of application.

Nonaccrual loans

When a borrower discontinues making payments as contractually required by the note, the Company must determine whether it is appropriate to continue to accrue interest. The Company ceases accruing interest income when the loan has become delinquent by more than 90 days or when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely. Past due status is based on the contractual terms of the loan. The Company may decide to continue to accrue interest on certain loans more than 90 days delinquent if the loans are well secured by collateral and in the process of collection.

For all loan types, when a loan is placed on nonaccrual status, all interest accrued but uncollected is reversed against interest income in the period in which the status is changed, and the Company makes a loan-level decision to apply either the cash basis or cost recovery method. The Company may recognize income on a cash basis when a payment is received and only for those nonaccrual loans for which the collection of the remaining principal balance is not in doubt. Under the cost recovery method, subsequent payments received from the customer are applied to principal and generally no further interest income is recognized until the principal has been paid in full or until circumstances have changed such that payments are again consistently received as contractually required. Loans are returned to accrual status when all of the principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Troubled Debt Restructured Loans

A TDR loan is a loan on which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. The evaluation is performed under the Company's internal underwriting policy. The loan terms that may be modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the contractual restructured terms for a reasonable period of time (generally six months), and the ultimate collectability of the total contractual restructured principal and interest is no longer in doubt. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.

The CARES Act, signed into law on March 27, 2020, permits financial institutions to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 that would otherwise be characterized as TDRs and suspend any determination related thereto if (i) the loan modification is made between March 1, 2020 and the earlier of December 31, 2020 or 60 days after the end of the coronavirus emergency declaration and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. In addition, federal bank regulatory authorities have issued guidance to encourage financial institutions to make loan modifications for borrowers affected by COVID-19 and have assured financial institutions that they will neither receive supervisory criticism for such prudent loan modifications, nor be required by examiners to automatically categorize COVID-19-related loan modifications as TDRs. The Company is applying this guidance to qualifying loan modifications.

Credit quality indicators

Loans are regularly reviewed to assess credit quality indicators and to determine appropriate loan classification and grading in accordance with applicable bank regulations. The Company’s risk rating methodology assigns risk ratings ranging from 1 to 9, where a higher rating represents higher risk. The Company differentiates its loan segments based on shared risk characteristics for which expected credit loss is measured on a pool basis.

The nine risk rating categories can be generally described by the following groupings for loans:

"Pass" (grades 1 through 5): The Company has five pass risk ratings, which represent a level of credit quality that ranges from no well-defined deficiency or weakness to some noted weakness; however, the risk of default on any loan classified as pass is expected to be remote. The five pass risk ratings are described below:

Minimal risk. These consist of loans that are fully secured either with cash held in a deposit account at the Bank or by readily marketable securities with an acceptable margin based on the type of security pledged.

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Low risk. These consist of loans with a high investment grade rating equivalent.

Modest risk. These consist of loans where the credit facility greatly exceeds all policy requirements or with policy exceptions that are appropriately mitigated. A secondary source of repayment is verified and considered sustainable. Collateral coverage on these loans is sufficient to fully cover the debt as a tertiary source of repayment. Debt of the borrower is low relative to borrower’s financial strength and ability to pay.

Average risk. These consist of loans where the credit facility meets or exceeds all policy requirements or with policy exceptions that are appropriately mitigated. A secondary source of repayment is available to service the debt. Collateral coverage is more than adequate to cover the debt. The borrower exhibits acceptable cash flow and moderate leverage.

Acceptable risk. These consist of loans with an acceptable primary source of repayment, but a less than preferable secondary source of repayment. Cash flow is adequate to service debt, but there is minimal excess cash flow. Leverage is moderate or high.

"Special mention" (grade 6): Generally these are assets that possess potential weaknesses that warrant management's close attention. These loans may involve borrowers with adverse financial trends, higher debt-to-equity ratios, or weaker liquidity positions, but not to the degree of being considered a “problem loan” where risk of loss may be apparent. Loans in this category are usually performing as agreed, although there may be non-compliance with financial covenants.

"Substandard" (grade 7): These assets are characterized by well-defined credit weaknesses and carry the distinct possibility that the Company will sustain some loss if such weakness or deficiency is not corrected. All loans 90 days or more past due and all loans on nonaccrual status are considered at least "Substandard," unless extraordinary circumstances would suggest otherwise.

"Doubtful" (grade 8): These assets have all the weaknesses inherent in those classified as "Substandard" with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable, but because of certain known factors that may work to the advantage and strengthening of the asset (for example, capital injection, perfecting liens on additional collateral and refinancing plans), classification as an estimated loss is deferred until a more precise status may be determined. Due to the high probability of loss, loans classified as "Doubtful" are placed on nonaccrual status.

"Loss" (grade 9): These assets are considered uncollectible and having such little recoverable value that it is not practical to defer writing off the asset. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practicable or desirable to defer writing off the asset, even though partial recovery may be achieved in the future.

Allowance for credit losses on loans

On January 1, 2020, the Company adopted the amendments within ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which changes the impairment model for most financial assets carried at amortized cost from an incurred loss model to an expected loss model. The discussion below reflects the current expected credit loss model methodology. For discussion of the former incurred loss model methodology, refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2019. Credit risk is inherent in the business of extending loans and leases to borrowers and is continuously monitored by management and reflected within the allowance for credit losses for loans. The allowance for credit losses is an estimate of life-of-loan losses for the Company's loans held for investment. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of a loan to present the net amount expected to be collected on the loan. Accrued interest receivable on loans, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses. Expected recoveries of amounts previously written off and expected to be written off are included in the valuation account and may not exceed the aggregate of amounts previously written off and expected to be written off. The Company formally re-evaluates and establishes the appropriate level of the allowance for credit losses on a quarterly basis.

Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. In future periods, evaluations of the overall loan portfolio or particular segments of the loan portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the allowance for credit losses and credit loss expense in those future periods. The allowance level is influenced by loan volumes, mix, loan performance metrics, asset quality characteristics, delinquency status, historical credit loss experience, and the inputs and assumptions in economic forecasts, such as macroeconomic inputs, length of reasonable and supportable forecast periods, and reversion methods. The methodology for estimating the amount of expected credit losses reported in the allowance for credit losses has two basic components: first, an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans and; second, a pooled component for estimated expected credit losses for pools of loans that share similar risk characteristics.

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Loans that do not share risk characteristics with other loans

Loans that do not share risk characteristics with other loans are evaluated on an individual basis. Loans evaluated individually are not included in the collective evaluation. These loans consist of loans with unique features or loans that no longer share risk characteristics with other pooled loans. The process for determining whether a loan should be evaluated on an individual basis begins with determination of credit rating. All loans graded substandard or worse and all PCD loans, irrespective of credit rating, are specifically reviewed for loss potential and, when deemed appropriate, are assigned a reserve based on an individual evaluation. For these loans, the allowance is based primarily on the fair value of the underlying collateral, utilizing independent third-party appraisals.

Loans that share similar risk characteristics with other loans

In estimating the component of the allowance for credit losses for loans that share similar risk characteristics with other loans, such loans are segregated into loan segments. The Company's primary portfolio segments have changed due to adoption of the amendments within ASU 2016-13 to align with the methodology applied in estimating the allowance for credit losses under CECL. Loans are designated into loan segments based on loans pooled by product types, business lines, and similar risk characteristics or areas of risk concentration.

In determining the allowance for credit losses, the Company derives an estimate of expected credit losses primarily using an expected loss methodology that incorporates risk parameters (probability of default, loss given default, and exposure at default), which are derived from various vendor models, internally-developed statistical models, or non-statistical estimation approaches. Probability of default is projected in these models or estimation approaches using multiple economic scenarios, whose outcomes are weighted based on the Company's economic outlook and were developed to incorporate relevant information about past events, current conditions, and reasonable and supportable forecasts. With the exception of the Company's residential loan segment, the Company's PD models share a common definition of default, which include loans that are 90 days past due, on nonaccrual status, have a writeoff, or obligor bankruptcy. Input reversion is used for all loan segment models, except for the commercial and industrial and CRE, owner-occupied loan segments. Output reversion is used for the commercial and industrial and CRE, owner-occupied segments by incorporating, after the forecast period, a one-year linear reversion to the long-term reversion rate in year three through the remaining life of the loans within the respective segments. LGDs are typically derived from the Company's historical loss experience. However, for the residential, warehouse lending, and municipal and nonprofit loan segments, where the Company has either zero (or near zero) losses, or has a limited loss history through the last economic downturn, certain non-modeled methodologies are employed. Factors utilized in calculating average LGD vary for each loan segment and are further described below. Exposure at default refers to the Company's exposure to loss at the time of borrower default and is calculated using an amortization schedule based on contractual loan terms, adjusted for a prepayment rate assumption. For most of the Company's loan segments, prepayment rate assumptions are based on a non-modeled approach that calculates the number of loans that were prepaid in full during the period divided by the total number of loans outstanding at the beginning of the period. Prepayment trends are sensitive to interest rates and the macroeconomic environment. Fixed rate loans are more influenced by interest rates, whereas variable rate loans are more influenced by the macroeconomic environment. After the quantitative expected loss estimates are calculated, management then adjusts these estimates to incorporate considerations of current trends and conditions that are not captured in the quantitative loss estimates, through the use of qualitative and/or environmental factors.

The following provides credit quality indicators and risk elements most relevant in monitoring and measuring the allowance for credit losses for each of the loan portfolio segments identified:

Commercial and industrial

The commercial and industrial portfolio segment is comprised of commercial loans that are not collateralized by real estate. The source of repayment of these loans is generally expected to be the income that is generated from the business. The models used to estimate expected credit losses for this loan segment include a combination of a vendor model and an internally-developed model. These models incorporate both market level and company-specific factors such as financial statement variables, adjusted for the current stage of the credit cycle and for the Company's loan performance data such as delinquency, utilization, maturity, and size of the loan commitment under specific macroeconomic scenarios to produce a probability of default. Macroeconomic variables include the Dow Jones Index, credit spread between the BBB Bond Yield and 10-Year Treasury Bond Yield, unemployment rate, and CBOE VIX Index quarterly high. LGD and the prepayment rate assumption for EAD for this loan segment are driven by unemployment levels.

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Commercial real estate, owner-occupied

The CRE, owner-occupied portfolio segment is comprised of commercial loans that are collateralized by real estate, where the primary source of repayment is the business that occupies the property. These loans are typically entered into for the purpose of providing real estate finance or improvement. The primary source of repayment of these loans is the income generated by the business and where rental or sale of the property may provide secondary support for the loan. These loans are sensitive to general economic conditions as well as the market valuation of CRE properties. The probability of default estimate for this loan segment is modeled using the same model as the commercial and industrial loan segment. LGD for this loan segment is driven by property appreciation and the prepayment rate assumption for EAD is driven by unemployment levels.

Commercial real estate, non-owner occupied

The CRE, non-owner occupied segment is comprised of loans that are collateralized by real estate, where the owner is not the primary tenant. These loans are typically entered into for the purpose of financing or the improvement of commercial investment properties. The primary source of repayment of these loans are the rents paid by tenants and where the sale of the property may provide secondary support for the loan. These loans are sensitive to the market valuation of CRE properties, rental rates, and general economic conditions. The vendor model used to estimate expected credit losses for this loan segment projects probabilities of default and exposure at default based on multiple macroeconomic scenarios by modeling how macroeconomic conditions affect the commercial real estate market. Real estate market factors utilized in this model include vacancy rate, rental growth rate, net operating income growth rate, and commercial property price changes for each specific property type. The model then incorporates loan and property-level characteristics including debt coverage, leverage, collateral size, seasoning, and property type. LGD for this loan segment is derived from a non-modeled approach that is driven by property appreciation and the prepayment rate assumption for EAD is driven by the property appreciation for fixed rate loans and unemployment levels for variable rate loans.

Residential

The residential loan portfolio segment is comprised of loans collateralized primarily by first liens on 1-4 residential family properties and home equity lines of credit that are collateralized by either first liens or junior liens on residential properties. The primary source of repayment of these loans is the value of the property and the capacity of the owner to make payments on the loan. Unemployment rates and the market valuation of residential properties will impact the ultimate repayment of these loans. The residential mortgage loan model is a vendor model that projects probability of default, loss given default severity, prepayment rate, and exposure at default to calculate expected losses. The model is intended to capture the borrower's payment behavior during the lifetime of the residential loan by incorporating loan level characteristics such as loan type, coupon, age, loan-to-value, and credit score and economic conditions such as Home Price Index, interest rate, and unemployment rate. A default event for residential loans is defined as 60 days or more past due, with property appreciation as the driver for LGD results. The prepayment rate assumption for exposure at default for residential loans is based on industry prepayment history.

Probability of default for HELOCs is derived from an internally-developed model that projects PD by incorporating loan level information such as FICO score, lien position, balloon payments, and macroeconomic conditions such as property appreciation. LGD for this loan segment is driven by property appreciation and lien position. Exposure at default for HELOCs is calculated based on utilization rate assumptions using a non-modeled approach and incorporates management judgment.

Construction and land development

The construction and land portfolio segment is comprised of loans collateralized by land or real estate, which are entered into for the purpose of real estate development. The primary source of repayment of loans is the eventual sale or refinance of the completed project and where claims on the property provide secondary support for the loan. These loans are impacted by the market valuation of CRE and residential properties and general economic conditions that have a higher sensitivity to real estate markets compared to other real estate loans. Default risk of a property is driven by loan-specific drivers, including loan-to-value, maturity, origination date, and the metropolitan statistical area ("MSA") in which the property is located, among other items. The variables used in the internally-developed model include loan level drivers such as origination loan-to-value, loan maturity, and macroeconomic drivers such as property appreciation, MSA level unemployment rate, and national GDP growth. LGD for this loan segment is driven by property appreciation. The prepayment rate assumption for EAD is driven by the property appreciation for fixed rate loans and unemployment levels for variable rate loans.

Warehouse lending

The warehouse lending portfolio segment consists of loans that have a monitored borrowing base to mortgage companies and similar lenders. These loans are collateralized by real estate notes and mortgages or mortgage servicing rights and the borrowing base of these loans is tightly monitored and controlled by the Company. The primary support for the loan takes the

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form of pledged collateral, with secondary support provided by the capacity of the financial institution. The collateral-driven nature of these loans distinguish them from traditional commercial and industrial loans. These loans are impacted by interest rate shocks, residential lending rates, prepayment assumptions, and general real estate stress. As a result of the unique loan characteristics, limited historical default and loss experience, and the collateral nature of this loan portfolio segment, the Company uses a non-modeled approach to estimate expected credit losses, leveraging grade information, grade migration history, and management judgment.

Municipal and nonprofit

The municipal and nonprofit portfolio segment consists of loans to local governments, government-operated utilities, special assessment districts, hospitals, schools and other nonprofits. These loans are generally, but not exclusively, entered into for the purpose of financing real estate investment or for refinancing existing debt. Loans are supported by taxes or utility fees, and in some cases tax liens on real estate, operating revenue of the institution, or other collateral support the loans. Unemployment rates and the market valuation of residential properties have an effect on the tax revenues supporting these loans; however, these loans tend to be less cyclical in comparison to similar commercial loans as these loans rely on diversified tax bases. The Company uses a non-modeled approach to estimate expected credit losses, leveraging grade information and historical municipal default rates.

Other

This portfolio consists of those loans not already captured in one of the aforementioned loan portfolio segments, which include, but may not be limited to, overdraft lines for treasury services, credit cards, consumer loans not collateralized by real estate, and small business loans collateralized by residential real estate. The consumer and small business loans are supported by the capacity of the borrower and the valuation of any collateral. General economic factors such as unemployment will have an effect on these loans. The Company uses a non-modeled approach to estimate expected credit losses, leveraging average historical default rates. LGD for this loan segment is driven by unemployment levels and lien position. The prepayment rate assumption for EAD is driven by the BBB corporate spread for fixed rate loans and unemployment levels for variable rate loans.

Off-balance sheet credit exposures, including unfunded loan commitments

The Company maintains a separate allowance for credit losses on off-balance-sheet credit exposures, including unfunded loan commitments, financial guarantees, and letters of credit, which is classified in other liabilities on the Consolidated Balance Sheet. The allowance for credit losses on off-balance sheet credit exposures is adjusted through increases or decreases to the provision for credit loss expense. The estimate includes consideration of the likelihood that funding will occur, an estimate of exposure at default that is derived from utilization rate assumptions using a non-modeled approach, and PD and LGD estimates that are derived from the same models and approaches for the Company's other loan portfolio segments described above as these unfunded commitments share similar risk characteristics with these loan portfolio segments. No credit loss estimate is reported for off-balance sheet credit exposures that are unconditionally cancellable by the Company or for undrawn amounts under such arrangements that may be drawn prior to the cancellation of the arrangement.

Leases (lessee)

At inception, contracts are evaluated to determine whether the contract constitutes a lease agreement. For contracts that are determined to be an operating lease, a corresponding ROU asset and operating lease liability are recorded in separate line items on the Consolidated Balance Sheet. A ROU asset represents the Company’s right to use an underlying asset during the lease term and a lease liability represents the Company’s commitment to make contractually obligated lease payments. Operating lease ROU assets and liabilities are recognized at the commencement date of the lease and are based on the present value of lease payments over the lease term. The measurement of the operating lease ROU asset includes any lease payments made and is reduced by lease incentives that are paid or are payable to the Company. Variable lease payments that depend on an index or rate such as the Consumer Price Index are included in lease payments based on the rate in effect at the commencement date of the lease. Lease payments are recognized on a straight-line basis as part of occupancy expense over the lease term.

As the rate implicit in the lease is not readily determinable, the Company's incremental collateralized borrowing rate is used to determine the present value of lease payments. This rate gives consideration to the applicable FHLB collateralized borrowing rates and is based on the information available at the commencement date. The Company has elected to apply the short-term lease measurement and recognition exemption to leases with an initial term of 12 months or less; therefore, these leases are not recorded on the Company’s Consolidated Balance Sheet, but rather, lease expense is recognized over the lease term on a straight-line basis. The Company’s lease agreements may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that the options will be exercised.

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In addition to the package of practical expedients, the Company also elected the practical expedient that allows lessees to make an accounting policy election to not separate non-lease components from the associated lease component, and instead account for them all together as part of the applicable lease component. This practical expedient can be elected separately for each underlying class of asset. The majority of the Company’s non-lease components such as common area maintenance, parking, and taxes are variable, and are expensed as incurred. Variable payment amounts are determined in arrears by the landlord depending on actual costs incurred.

Goodwill and other intangible assets

The Company records as goodwill the excess of the purchase price in a business combination over the fair value of the identifiable net assets acquired in accordance with applicable guidance. The Company performs its annual goodwill and intangibles impairment tests as of October 1 each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. The Company can first elect to assess, through qualitative factors, whether it is more likely than not that goodwill is impaired. If the qualitative assessment indicates potential impairment, a quantitative impairment test is necessary. If, based on the quantitative test, a reporting unit's carrying amount exceeds its fair value, a goodwill impairment charge for this difference is recorded to current period earnings as non-interest expense.

The Company’s intangible assets consist primarily of core deposit intangible assets that are amortized over periods ranging from five to 10 years. The Company considers the remaining useful lives of its core deposit intangible assets each reporting period, as required by ASC 350, Intangibles—Goodwill and Other, to determine whether events and circumstances warrant a revision to the remaining period of amortization. If the estimate of an intangible asset’s remaining useful life has changed, the remaining carrying amount of the intangible asset is amortized prospectively over the revised remaining useful life. The Company did not revise its estimates of the useful lives of its core deposit intangibles during the three and nine months ended September 30, 2020 or 2019.

Treasury shares

The Company separately presents treasury shares, which represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. Treasury shares are carried at cost.

Common stock repurchases

On December 11, 2018, the Company adopted its common stock repurchase program, pursuant to which the Company was authorized to repurchase up to $250.0 million of its shares of common stock through December 31, 2019. The program was renewed through December 2020, authorizing the Company to repurchase up to an additional $250.0 million of its outstanding common stock. All shares repurchased under the plan are retired upon settlement. The Company has elected to allocate the excess of the repurchase price over the par value of its common stock between APIC and retained earnings, with the portion allocated to APIC limited to the amount of APIC that was recorded at the time that the shares were initially issued, which is calculated on a last-in, first-out basis.

Derivative financial instruments

The Company uses interest rate swaps to mitigate interest-rate risk associated with changes to the fair value of certain fixed-rate financial instruments (fair value hedges).

The Company recognizes derivatives as assets or liabilities on the Consolidated Balance Sheet at their fair value in accordance with ASC 815, Derivatives and Hedging. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset or liability attributable to a particular risk, such as interest rate risk, are considered fair value hedges.

Changes in the fair value of a derivative that is designated and qualifies as a fair value hedge, along with changes in the fair value of the hedged asset or liability that are attributable to the hedged risk, are recorded in current period earnings. Changes in the fair value of derivatives not considered to be highly effective in hedging the change in fair value of the hedged item are recognized in earnings as non-interest income during the period of the change.

The Company documents its hedge relationships, including identification of the hedging instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transaction after the derivative contract is executed. At inception, the Company performs a quantitative assessment to determine whether the derivatives used in hedging transactions are highly effective (as defined in the guidance) in offsetting changes in the fair value of the hedged item. Retroactive effectiveness is assessed, as well as the continued expectation that the hedge will remain effective prospectively.

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After the initial quantitative assessment is performed, on a quarterly basis, the Company performs a qualitative hedge effectiveness assessment. This assessment takes into consideration any adverse developments related to the counterparty's risk of default and any negative events or circumstances that affect the factors that originally enabled the Company to assess that it could reasonably support, qualitatively, an expectation that the hedging relationship was and will continue to be highly effective. The Company discontinues hedge accounting prospectively when it is determined that a hedge is no longer highly effective. When hedge accounting is discontinued on a fair value hedge that no longer qualifies as an effective hedge, the derivative instrument continues to be reported at fair value on the Consolidated Balance Sheet, but the carrying amount of the hedged item is no longer adjusted for future changes in fair value. The adjustment to the carrying amount of the hedged item that existed at the date hedge accounting is discontinued is amortized over the remaining life of the hedged item into earnings.

Derivative instruments that are not designated as hedges, so called free-standing derivatives, are reported on the Consolidated Balance Sheet at fair value and the changes in fair value are recognized in earnings as non-interest income during the period of change.

The Company may in the normal course of business purchase a financial instrument or originate a loan that contains an embedded derivative instrument. Upon purchasing the instrument or originating the loan, the Company assesses whether the economic characteristics of the embedded derivative are clearly and closely related to the economic characteristics of the remaining component of the financial instrument (i.e., the host contract) and whether a separate instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When it is determined that the embedded derivative possesses economic characteristics that are not clearly and closely related to the economic characteristics of the host contract and a separate instrument with the same terms would qualify as a derivative instrument, the embedded derivative is separated from the host contract and carried at fair value. However, in cases where the host contract is measured at fair value, with changes in fair value reported in current earnings, or the Company is unable to reliably identify and measure an embedded derivative for separation from its host contract, the entire contract is carried on the Consolidated Balance Sheet at fair value and is not designated as a hedging instrument.

Off-balance sheet instruments

In the ordinary course of business, the Company has entered into off-balance sheet financial instrument arrangements consisting of commitments to extend credit and standby letters of credit. Such financial instruments are recorded in the Consolidated Financial Statements when they are funded. They involve, to varying degrees, elements of credit risk in excess of amounts recognized on the Consolidated Balance Sheet. Losses could be experienced when the Company is contractually obligated to make a payment under these instruments and must seek repayment from the borrower, which may not be as financially sound in the current period as they were when the commitment was originally made. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract and, in certain instances, may be unconditionally cancelable. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral.

The Company also has off-balance sheet arrangements related to its derivative instruments. Derivative instruments are recognized in the Consolidated Financial Statements at fair value and their notional values are carried off-balance sheet. See "Note 8. Derivatives and Hedging Activities" of these Notes to Unaudited Consolidated Financial Statements for further discussion.

Fair values of financial instruments

The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities. ASC 820, Fair Value Measurement, establishes a framework for measuring fair value and a three-level valuation hierarchy for disclosure of fair value measurement, and also sets forth disclosure requirements for fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The Company uses various valuation approaches, including market, income, and/or cost approaches. ASC 820 establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors market participants would consider in pricing the

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asset or liability developed based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the reliability of inputs, as follows:

•Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

•Level 2 - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, prepayment speeds, volatilities, etc.) or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market.

•Level 3 - Valuation is generated from model-based techniques where one or more significant inputs are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of matrix pricing, discounted cash flow models, and similar techniques.

The availability of observable inputs varies based on the nature of the specific financial instrument. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

Fair value is a market-based measure considered from the perspective of a market participant who may purchase the asset or assume the liability, rather than an entity-specific measure. When market assumptions are available, ASC 820 requires that the Company make assumptions regarding the assumptions that market participants would use to estimate the fair value of the financial instrument at the measurement date.

ASC 825, Financial Instruments, requires disclosure of fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value.

Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent limitations in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates presented herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction at September 30, 2020 and December 31, 2019. The estimated fair value amounts for September 30, 2020 and December 31, 2019 have been measured as of period-end, and have not been re-evaluated or updated for purposes of these Unaudited Consolidated Financial Statements subsequent to those dates. As such, the estimated fair values of these financial instruments subsequent to the reporting date may be different than the amounts reported at period-end.

The information in "Note 12. Fair Value Accounting" of these Notes to Unaudited Consolidated Financial Statements should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only required for a limited portion of the Company’s assets and liabilities.

Due to the wide range of valuation techniques and the degree of subjectivity used in making the estimate, comparisons between the Company’s disclosures and those of other companies or banks may not be meaningful.

The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments:

Cash, cash equivalents, and restricted cash

The carrying amounts reported on the Consolidated Balance Sheet for cash and due from banks approximate their fair value.

Money market investments

The carrying amounts reported on the Consolidated Balance Sheet for money market investments approximate their fair value.

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Investment securities

The fair values of CRA investments, exchange-listed preferred stock, trust preferred securities, and certain corporate debt securities are based on quoted market prices and are categorized as Level 1 in the fair value hierarchy.

The fair values of debt securities are primarily determined based on matrix pricing. Matrix pricing is a mathematical technique that utilizes observable market inputs including, for example, yield curves, credit ratings, and prepayment speeds. Fair values determined using matrix pricing are generally categorized as Level 2 in the fair value hierarchy. For a small subset of securities, other pricing sources are used, including observed prices on publicly traded securities and dealer quotes.

Restricted stock

WAB is a member of the Federal Reserve System and the FHLB and, accordingly, maintains investments in the capital stock of the FRB and the FHLB. These investments are carried at cost since no ready market exists for them, and they have no quoted market value. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. The fair values of these investments have been categorized as Level 2 in the fair value hierarchy.

Loans

The fair value of loans is estimated based on discounted cash flows using interest rates currently being offered for loans with similar terms to borrowers with similar credit quality and adjustments that the Company believes a market participant would consider in determining fair value based on a third-party independent valuation. As a result, the fair value for loans is categorized as Level 2 in the fair value hierarchy, excluding collateral dependent and impaired loans, which are categorized as Level 3.

Accrued interest receivable and payable

The carrying amounts reported on the Consolidated Balance Sheet for accrued interest receivable and payable approximate their fair values.

Derivative financial instruments

All derivatives are recognized on the Consolidated Balance Sheets at their fair value. The fair value for derivatives is determined based on market prices, broker-dealer quotations on similar products, or other related input parameters. As a result, the fair values have been categorized as Level 2 in the fair value hierarchy.

Deposits

The fair value disclosed for demand and savings deposits is by definition equal to the amount payable on demand at their reporting date (that is, their carrying amount) as these deposits do not have a contractual term. The carrying amount for variable rate deposit accounts approximates their fair value. Fair values for fixed rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on these deposits. The fair value measurement of the deposit liabilities is categorized as Level 2 in the fair value hierarchy.

FHLB advances and customer repurchase agreements

The fair values of the Company’s borrowings are estimated using discounted cash flow analyses, based on the market rates for similar types of borrowing arrangements. The FHLB advances and customer repurchase agreements have been categorized as Level 2 in the fair value hierarchy due to their short durations.

Subordinated debt

The fair value of subordinated debt is based on the market rate for the respective subordinated debt security. Subordinated debt has been categorized as Level 2 in the fair value hierarchy.

Junior subordinated debt

Junior subordinated debt is valued based on a discounted cash flow model which uses as inputs Treasury Bond rates and the 'BB' and 'BBB' rated financial indexes. Junior subordinated debt has been categorized as Level 3 in the fair value hierarchy.

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Off-balance sheet instruments

The fair value of the Company’s off-balance sheet instruments (lending commitments and letters of credit) is based on quoted fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements, and the counterparties’ credit standing.

Income taxes

The Company is subject to income taxes in the United States and files a consolidated federal income tax return with all of its subsidiaries, with the exception of BW Real Estate, Inc. Deferred income taxes are recorded to reflect the effects of temporary differences between the financial reporting carrying amounts of assets and liabilities and their income tax bases using enacted tax rates that are expected to be in effect when the taxes are actually paid or recovered. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.

Net deferred tax assets are recorded to the extent that these assets will more-likely-than-not be realized. In making these determinations, all available positive and negative evidence is considered, including scheduled reversals of deferred tax liabilities, tax planning strategies, projected future taxable income, and recent operating results. If it is determined that deferred income tax assets to be realized in the future are in excess of their net recorded amount, an adjustment to the valuation allowance will be recorded, which will reduce the Company's provision for income taxes.

A tax benefit from an unrecognized tax benefit may be recognized when it is more-likely-than-not that the position will be sustained upon examination, including related appeals or litigation, based on technical merits. Income tax benefits must meet a more-likely-than-not recognition threshold at the effective date to be recognized.

Interest and penalties related to unrecognized tax benefits are recognized as part of the provision for income taxes in the Consolidated Income Statement. Accrued interest and penalties are included in the related tax liability line with other liabilities on the Consolidated Balance Sheet. See "Note 10. Income Taxes" of these Notes to Unaudited Consolidated Financial Statements for further discussion on income taxes.

Non-interest income

Non-interest income includes service charges and fees, income from equity investments, card income, foreign currency income, income from bank owned life insurance, lending related income, net gain or loss on sales of investment securities, net fair value gain or loss adjustments on assets measured at fair value, and other income. Service charges and fees consist of fees earned from performance of account analysis, general account services, and other deposit account services. These fees are recognized as the related services are provided in accordance with ASC 606, Revenue from Contracts with Customers. Income from equity investments includes gains on equity warrant assets, SBIC equity income, and success fees. Card income includes fees earned from customer use of debit and credit cards, interchange income from merchants, and international charges. Card income is generally within the scope of ASC 310, Receivables; however, certain processing transactions for merchants, such as interchange fees, are within the scope of ASC 606. Foreign currency income represents fees earned on the differential between purchases and sales of foreign currency on behalf of the Company’s clients. Income from bank owned life insurance is accounted for in accordance with ASC 325, Investments - Other. Lending related income includes fees earned from gains or losses on the sale of loans, SBA income, and letter of credit fees. Gains and losses on the sale of loans and SBA income are recognized pursuant to ASC 860, Transfers and Servicing. Net unrealized gains or losses on assets measured at fair value represent fair value changes in equity securities and are accounted for in accordance with ASC 321, Investments - Equity Securities. Fees related to standby letters of credit are accounted for in accordance with ASC 440, Commitments. Other income includes operating lease income, which is recognized on a straight-line basis over the lease term in accordance with ASC 842, Leases. Net gain or loss on sales/valuations of repossessed and other assets is presented as a component of non-interest expense, but may also be presented as a component of non-interest income in the event that a net gain is recognized. Net gain or loss on sales of repossessed and other assets are accounted for in accordance with ASC 610, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets. See "Note 14. Revenue from Contracts with Customers" of these Notes to Unaudited Consolidated Financial Statements for further details related to the nature and timing of revenue recognition for non-interest income revenue streams within the scope of the new standard.

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2. INVESTMENT SECURITIES

The carrying amounts and fair values of investment securities at September 30, 2020 and December 31, 2019 are summarized as follows:

	September 30, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	504,477	$	43,663	$	—	$	548,140
Available-for-sale debt securities
CDO	$	50	$	8,126	$	—	$	8,176
Commercial MBS issued by GSEs	91,769		3,888		—		95,657
Corporate debt securities	193,798		1,081		(8,270)		186,609
Municipal securities	22,006		271		(118)		22,159
Private label residential MBS	1,245,217		19,874		(854)		1,264,237
Residential MBS issued by GSEs	1,329,773		32,314		(531)		1,361,556
Tax-exempt	961,373		51,117		(1,467)		1,011,023
Trust preferred securities	32,000		—		(6,792)		25,208
U.S. treasury securities	600		—		—		600
Total AFS debt securities	$	3,876,586	$	116,671	$	(18,032)	$	3,975,225
Equity securities
CRA investments	$	53,190	$	355	$	—	$	53,545
Preferred stock	104,974		3,976		(1,934)		107,016
Total equity securities	$	158,164	$	4,331	$	(1,934)	$	160,561

	December 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	485,107	$	31,303	$	(149)	$	516,261
Available-for-sale debt securities
CDO	$	50	$	10,092	$	—	$	10,142
Commercial MBS issued by GSEs	95,062		366		(1,175)		94,253
Corporate debt securities	105,015		112		(5,166)		99,961
Municipal securities	7,494		279		—		7,773
Private label residential MBS	1,129,985		3,572		(4,330)		1,129,227
Residential MBS issued by GSEs	1,406,594		9,283		(3,817)		1,412,060
Tax-exempt	530,729		24,548		(422)		554,855
Trust preferred securities	32,000		—		(4,960)		27,040
U.S. government sponsored agency securities	10,000		—		—		10,000
U.S. treasury securities	999		—		—		999
Total AFS debt securities	$	3,317,928	$	48,252	$	(19,870)	$	3,346,310
Equity securities
CRA investments	$	52,805	$	—	$	(301)	$	52,504
Preferred stock	82,514		3,881		(198)		86,197
Total equity securities	$	135,319	$	3,881	$	(499)	$	138,701

Securities with carrying amounts of approximately $830.4 million and $962.5 million at September 30, 2020 and December 31, 2019, respectively, were pledged for various purposes as required or permitted by law.

27

The following tables summarize the Company's AFS debt securities in an unrealized loss position at September 30, 2020 and December 31, 2019, aggregated by major security type and length of time in a continuous unrealized loss position: 

	September 30, 2020
	Less Than Twelve Months				More Than Twelve Months				Total
	Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value
	(in thousands)
Available-for-sale debt securities
Corporate debt securities	$	70	$	31,528	$	8,200	$	91,800	$	8,270	$	123,328
Municipal securities	118		9,384		—		—		118		9,384
Private label residential MBS	851		131,620		3		2,435		854		134,055
Residential MBS issued by GSEs	522		134,180		9		1,193		531		135,373
Tax-exempt	1,467		121,031		—		—		1,467		121,031
Trust preferred securities	—		—		6,792		25,208		6,792		25,208
Total AFS securities	$	3,028	$	427,743	$	15,004	$	120,636	$	18,032	$	548,379

	December 31, 2019
	Less Than Twelve Months				More Than Twelve Months				Total
	Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	149	$	24,325	$	—	$	—	$	149	$	24,325
Available-for-sale debt securities
Commercial MBS issued by GSEs	$	85	$	9,035	$	1,090	$	54,604	$	1,175	$	63,639
Corporate debt securities	—		—		5,166		94,834		5,166		94,834
Private label residential MBS	1,776		337,285		2,554		258,791		4,330		596,076
Residential MBS issued by GSEs	1,740		385,643		2,077		150,419		3,817		536,062
Tax-exempt	422		67,150		—		—		422		67,150
Trust preferred securities	—		—		4,960		27,040		4,960		27,040
Total AFS securities	$	4,023	$	799,113	$	15,847	$	585,688	$	19,870	$	1,384,801

The total number of AFS securities in an unrealized loss position at September 30, 2020 is 73, compared to 158 at December 31, 2019.

On January 1, 2020, the Company adopted the amendments within ASU 2016-13, which replaces the legacy US GAAP OTTI model with a credit loss model. The credit loss model under ASC 326-30, applicable to AFS debt securities, requires recognition of credit losses through an allowance account, but retains the concept from the OTTI model that credit losses are recognized once securities become impaired. For a detailed discussion of the impact of adoption of ASU 2016-13 and information related to investment securities, including accounting policies and methodologies used to estimate the allowance for credit losses on securities, see "Note 1. Summary of Significant Accounting Policies."

Residential MBS issued by GSEs held by the Company are issued by U.S. government entities and agencies. These securities are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies, and have a long history of no credit losses. As the Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell the securities prior to their anticipated recovery, no credit losses have been recognized on these securities during the three and nine months ended September 30, 2020.

Qualitative factors used in the Company's credit loss assessment of its securities that are not guaranteed by the U.S. government included consideration of any adverse conditions related to a specific security, industry, or geographic region of its securities, any credit ratings below investment grade, the payment structure of the security and the likelihood of the issuer to be able to make payments that increase in the future, and failure of the issuer to make any scheduled principal or interest payments. For the Company's corporate debt, municipal, and tax-exempt securities, the Company also considered various metrics of the issuer including days of cash on hand, the ratio of long-term debt to total assets, the net change in cash between reporting periods, and consideration of any breach in covenant requirements. For the Company's private label residential MBS, the Company also considered metrics such as securitization risk weight factor, current credit support, whether there were any mortgage principal

28

losses resulting from defaults in payments on the underlying mortgage collateral, and the credit default rate over the last twelve months.

As of September 30, 2020, no credit losses on the Company's corporate debt, municipal, and tax-exempt securities have been recognized. The Company's corporate debt and tax-exempt securities continue to be highly rated, issuers continue to make timely principal and interest payments, and the unrealized losses on these security portfolios primarily relate to changes in interest rates and other market conditions that are not considered to be credit-related issues. The Company is continuing to receive timely principal and interest payments on its municipal securities and the majority of these issuers have revenues pledged for payment of debt service prior to payment of other types of expenses. Further, the Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell these securities prior to their anticipated recovery.

The Company's private label residential MBS are non-agency collateralized mortgage obligations and primarily carry investment grade credit ratings as of September 30, 2020. These securities are secured by pools of residential mortgage loans. Credit losses have not been recognized on these securities as of September 30, 2020 as principal and interest payments on these securities continue to be made on a timely basis, credit support for these securities is considered adequate, and as the Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell these securities prior to their anticipated recovery.

The Company's trust preferred securities are investment grade and the issuer continues to make timely principal and interest payments.

Based on the qualitative factors discussed above, no allowance for credit losses for the Company's AFS debt securities has been recognized as of September 30, 2020.

The credit loss model under ASC 326-20, applicable to HTM debt securities, requires recognition of lifetime expected credit losses through an allowance account at the time the security is purchased. The following tables present a rollforward by major security type of the allowance for credit losses for the Company's HTM debt securities:

	Three Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	June 30, 2020								September 30, 2020
	(in thousands)
Held-to-maturity debt securities
Tax-exempt	$	7,649	$	(1,685)	$	—	$	—	$	5,964

	Nine Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	January 1, 2020								September 30, 2020
	(in thousands)
Held-to-maturity debt securities
Tax-exempt	$	2,646	$	3,318	$	—	$	—	$	5,964

Accrued interest receivable on HTM securities totaled $1.8 million at September 30, 2020 and is excluded from the estimate of credit losses.

29

The following tables summarize the carrying amount of the Company’s investment ratings position as of September 30, 2020 and December 31, 2019, which are updated quarterly and used to monitor the credit quality of the Company's securities: 

	September 30, 2020
	AAA		Split-rated AAA/AA+		AA+ to AA-		A+ to A-		BBB+ to BBB-		BB+ and below		Unrated		Totals
	(in thousands)
Held-to-maturity
Tax-exempt	$	—	$	—	$	—	$	—	$	—	$	—	$	504,477	$	504,477
Available-for-sale debt securities
CDO	$	—	$	—	$	—	$	—	$	—	$	8,176	$	—	$	8,176
Commercial MBS issued by GSEs	—		95,657		—		—		—		—		—		95,657
Corporate debt securities	—		—		—		45,800		122,579		18,230		—		186,609
Municipal securities	—		—		12,143		—		2,630		—		7,386		22,159
Private label residential MBS	1,235,170		—		27,682		91		347		947		—		1,264,237
Residential MBS issued by GSEs	—		1,361,556		—		—		—		—		—		1,361,556
Tax-exempt	43,328		56,725		447,629		431,459		—		—		31,882		1,011,023
Trust preferred securities	—		—		—		—		25,208		—		—		25,208
U.S. treasury securities	—		600		—		—		—		—		—		600
Total AFS securities (1)	$	1,278,498	$	1,514,538	$	487,454	$	477,350	$	150,764	$	27,353	$	39,268	$	3,975,225
Equity securities
CRA investments	$	—	$	27,795	$	—	$	—	$	—	$	—	$	25,750	$	53,545
Preferred stock	—		—		—		—		68,945		37,135		936		107,016
Total equity securities (1)	$	—	$	27,795	$	—	$	—	$	68,945	$	37,135	$	26,686	$	160,561

(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

	December 31, 2019
	AAA		Split-rated AAA/AA+		AA+ to AA-		A+ to A-		BBB+ to BBB-		BB+ and below		Unrated		Totals
	(in thousands)
Held-to-maturity
Tax-exempt	$	—	$	—	$	—	$	—	$	—	$	—	$	485,107	$	485,107
Available-for-sale debt securities
CDO	$	—	$	—	$	—	$	—	$	—	$	10,142	$	—	$	10,142
Commercial MBS issued by GSEs	—		94,253		—		—		—		—		—		94,253
Corporate debt securities	—		—		—		66,530		33,431		—		—		99,961
Municipal securities	—		—		—		—		—		—		7,773		7,773
Private label residential MBS	1,096,909		—		30,675		181		288		1,174		—		1,129,227
Residential MBS issued by GSEs	—		1,412,060		—		—		—		—		—		1,412,060
Tax-exempt	52,610		2,856		327,657		171,732		—		—		—		554,855
Trust preferred securities	—		—		—		—		27,040		—		—		27,040
U.S. government sponsored agency securities	—		10,000		—		—		—		—		—		10,000
U.S. treasury securities	—		999		—		—		—		—		—		999
Total AFS securities (1)	$	1,149,519	$	1,520,168	$	358,332	$	238,443	$	60,759	$	11,316	$	7,773	$	3,346,310
Equity securities
CRA investments	$	—	$	25,375	$	—	$	—	$	—	$	—	$	27,129	$	52,504
Preferred stock	—		—		—		—		82,851		2,105		1,241		86,197
Total equity securities (1)	$	—	$	25,375	$	—	$	—	$	82,851	$	2,105	$	28,370	$	138,701

(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

A security is considered to be past due once it is 30 days contractually past due under the terms of the agreement. As of September 30, 2020, there were no investment securities that were past due. In addition, the Company does not have a significant amount of investment securities on nonaccrual status or securities that are considered to be collateral-dependent as of September 30, 2020.

30

The amortized cost and fair value of the Company's debt securities as of September 30, 2020, by contractual maturities, are shown below. MBS are shown separately as individual MBS are comprised of pools of loans with varying maturities. Therefore, these securities are listed separately in the maturity summary.

	September 30, 2020
	Amortized Cost		Estimated Fair Value
	(in thousands)
Held-to-maturity
Due in one year or less	$	7,330	$	7,336
After one year through five years	17,135		17,628
After ten years	480,012		523,176
Total HTM securities	$	504,477	$	548,140
Available-for-sale
Due in one year or less	$	600	$	600
After one year through five years	9,024		9,047
After five years through ten years	229,899		223,844
After ten years	970,304		1,020,284
Mortgage-backed securities	2,666,759		2,721,450
Total AFS securities	$	3,876,586	$	3,975,225

The following table presents gross gains and losses on sales of investment securities:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Available-for-sale securities
Gross gains	$	—	$	3,152	$	405	$	3,152
Gross losses	—		—		(175)		—
Net gains (losses) on AFS securities	$	—	$	3,152	$	230	$	3,152

31

3. LOANS, LEASES AND ALLOWANCE FOR CREDIT LOSSES

On January 1, 2020, the Company adopted the amendments within ASU 2016-13 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. Accordingly, the Company's financial results for reporting periods beginning after January 1, 2020 are presented in accordance with ASC 326 while prior period amounts have not been adjusted and continue to be reported in accordance with legacy GAAP. For a detailed discussion of the impact of adoption of ASU 2016-13 and information related to loans and credit quality, including accounting policies and methodologies used to estimate the allowance for credit losses on loans, see "Note 1. Summary of Significant Accounting Policies."

The Company's primary portfolio segments have changed to align with the methodology applied in estimating the allowance for credit losses under CECL. In addition, as the concept of impaired loans does not exist under CECL, disclosures that related solely to impaired loans have been removed.

The composition of the Company's held for investment loan portfolio is as follows:

	September 30, 2020
	(in thousands)
Commercial and industrial
Tech & Innovation	$	2,277,889
Other commercial and industrial	5,993,712
CRE - owner occupied	1,970,163
CRE - non-owner occupied
Hotel Franchise Finance	1,942,886
Other CRE - non-owned occupied	3,433,932
Residential	2,330,064
Construction and land development	2,267,922
Warehouse lending	3,926,852
Municipal & nonprofit	1,686,690
Other	163,144
Total loans HFI	25,993,254
Allowance for credit losses	(310,560)
Total loans HFI, net of allowance	$	25,682,694

	December 31, 2019
	(in thousands)
Commercial and industrial	$	9,382,043
Commercial real estate - non-owner occupied	5,245,634
Commercial real estate - owner occupied	2,316,913
Construction and land development	1,952,156
Residential real estate	2,147,664
Consumer	57,083
Loans, net of deferred loan fees and costs	21,101,493
Allowance for credit losses	(167,797)
Total loans HFI	$	20,933,696

Loans that are held for investment are stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts on acquired and purchased loans, and an allowance for credit losses. Net deferred loan fees of $81.4 million and $47.7 million reduced the carrying value of loans as of September 30, 2020 and December 31, 2019, respectively. Net unamortized purchase premiums on acquired and purchased loans of $22.1 million and $19.6 million increased the carrying value of loans as of September 30, 2020 and December 31, 2019, respectively.

As of September 30, 2020 and December 31, 2019, the Company also had $20.8 million and $21.8 million of HFS loans, respectively.

32

Nonaccrual and Past Due Loans

Loans are placed on nonaccrual status when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely, generally when the loan becomes 90 days or more past due.

The following tables present nonperforming loan balances by loan portfolio segment:

	September 30, 2020
	Nonaccrual with No Allowance for Credit Loss		Nonaccrual with an Allowance for Credit Loss		Total Nonaccrual		Loans Past Due 90 Days or More and Still Accruing
	(in thousands)
Commercial and industrial
Tech & Innovation	$	18,725	$	—	$	18,725	$	—
Other commercial and industrial	26,997		4,614		31,611		16,866
CRE - owner occupied	38,567		—		38,567		—
CRE - non-owner occupied
Hotel Franchise Finance	—		—		—		11,263
Other CRE - non-owned occupied	18,404		10,667		29,071		—
Residential	5,388		—		5,388		—
Construction and land development	—		192		192		—
Warehouse lending	—		—		—		—
Municipal & nonprofit	—		1,952		1,952		—
Other	158		45		203		—
Total	$	108,239	$	17,470	$	125,709	$	28,129

In addition, the Company also has HFS loans totaling $20.8 million that are on nonaccrual status as of September 30, 2020.

	December 31, 2019
	Non-accrual loans						Loans past due 90 days or more and still accruing
	Current		Past Due/ Delinquent		Total Non-accrual
	(in thousands)
Commercial and industrial	$	19,080	$	5,421	$	24,501	$	—
Commercial real estate
Owner occupied	4,418		124		4,542		—
Non-owner occupied	7,265		11,913		19,178		—
Multi-family	—		—		—		—
Construction and land development
Construction	2,147		—		2,147		—
Land	—		—		—		—
Residential real estate	1,231		4,369		5,600		—
Consumer	—		—		—		—
Total	$	34,141	$	21,827	$	55,968	$	—

The reduction in interest income associated with loans on nonaccrual status was approximately $1.7 million and $0.7 million for the three months ended September 30, 2020 and 2019, respectively, and $4.1 million and $1.5 million for the nine months ended September 30, 2020 and 2019, respectively.

33

The following table presents an aging analysis of past due loans by loan portfolio segment:

	September 30, 2020
	Current		30-59 Days Past Due		60-89 Days Past Due		Over 90 days Past Due		Total Past Due		Total
	(in thousands)
Commercial and industrial
Tech & Innovation	$	2,277,889	$	—	$	—	$	—	$	—	$	2,277,889
Other commercial and industrial	5,969,739		4,617		2,490		16,866		23,973		5,993,712
CRE - owner occupied	1,970,163		—		—		—		—		1,970,163
CRE - non-owner occupied
Hotel Franchise Finance	1,931,623		—		—		11,263		11,263		1,942,886
Other CRE - non-owned occupied	3,433,932		—		—		—		—		3,433,932
Residential	2,319,530		10,325		209		—		10,534		2,330,064
Construction and land development	2,261,348		6,574		—		—		6,574		2,267,922
Warehouse lending	3,926,852		—		—		—		—		3,926,852
Municipal & nonprofit	1,686,690		—		—		—		—		1,686,690
Other	163,101		38		5		—		43		163,144
Total loans	$	25,940,867	$	21,554	$	2,704	$	28,129	$	52,387	$	25,993,254

	December 31, 2019
	Current		30-59 Days Past Due		60-89 Days Past Due		Over 90 days Past Due		Total Past Due		Total
	(in thousands)
Commercial and industrial	$	9,376,377	$	2,501	$	637	$	2,528	$	5,666	$	9,382,043
Commercial real estate
Owner occupied	2,316,165		624		—		124		748		2,316,913
Non-owner occupied	5,007,644		4,661		—		11,913		16,574		5,024,218
Multi-family	221,416		—		—		—		—		221,416
Construction and land development
Construction	1,176,908		—		—		—		—		1,176,908
Land	775,248		—		—		—		—		775,248
Residential real estate	2,134,346		7,627		1,721		3,970		13,318		2,147,664
Consumer	57,083		—		—		—		—		57,083
Total loans	$	21,065,187	$	15,413	$	2,358	$	18,535	$	36,306	$	21,101,493

34

Credit Quality Indicators

The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually to classify the loans as to credit risk. This analysis is performed on a quarterly basis. The risk rating categories are described in "Note 1. Summary of Significant Accounting Policies." The following tables present risk ratings as of September 30, 2020 by loan portfolio segment:

	Term Loan Amortized Cost Basis by Origination Year												Revolving Loans Amortized Cost Basis		Total
September 30, 2020	2020		2019		2018		2017		2016		Prior
	(in thousands)
Tech & Innovation
Pass	$	524,508	$	315,900	$	132,566	$	1,459	$	1,898	$	—	$	1,236,377	$	2,212,708
Special mention	3,499		8,957		2,651		—		—		—		—		15,107
Substandard	32,412		2,006		—		—		—		—		15,656		50,074
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	560,419	$	326,863	$	135,217	$	1,459	$	1,898	$	—	$	1,252,033	$	2,277,889
Other commercial and industrial
Pass	$	2,067,599	$	920,820	$	469,602	$	289,894	$	113,199	$	123,061	$	1,735,701	$	5,719,876
Special mention	129		51,516		32,172		36,017		6,130		15,885		43,378		185,227
Substandard	18,169		8,420		3,465		31,349		9,876		1,001		16,102		88,382
Doubtful	—		—		—		177		—		—		—		177
Loss	—		50		—		—		—		—		—		50
Total	$	2,085,897	$	980,806	$	505,239	$	357,437	$	129,205	$	139,947	$	1,795,181	$	5,993,712
CRE - owner occupied
Pass	$	173,784	$	327,618	$	322,396	$	423,987	$	167,304	$	376,175	$	74,887	$	1,866,151
Special mention	877		11,412		4,411		17,306		3,309		10,658		—		47,973
Substandard	2,237		7,573		4,926		10,483		6,311		22,460		2,049		56,039
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	176,898	$	346,603	$	331,733	$	451,776	$	176,924	$	409,293	$	76,936	$	1,970,163
Hotel Franchise Finance
Pass	$	156,816	$	754,537	$	464,842	$	140,424	$	—	$	96,306	$	162,567	$	1,775,492
Special mention	—		32,643		55,798		27,389		—		23,914		—		139,744
Substandard	—		—		—		12,774		2,129		12,747		—		27,650
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	156,816	$	787,180	$	520,640	$	180,587	$	2,129	$	132,967	$	162,567	$	1,942,886
Other CRE - non-owned occupied
Pass	$	648,330	$	961,315	$	663,375	$	431,032	$	182,475	$	232,800	$	211,671	$	3,330,998
Special mention	—		13,217		7,031		5,458		4,257		7,288		—		37,251
Substandard	8,350		26,454		—		12,432		6,652		11,795		—		65,683
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	656,680	$	1,000,986	$	670,406	$	448,922	$	193,384	$	251,883	$	211,671	$	3,433,932

35

	Term Loan Amortized Cost Basis by Origination Year												Revolving Loans Amortized Cost Basis		Total
September 30, 2020	2020		2019		2018		2017		2016		Prior
	(in thousands)
Residential
Pass	$	524,852	$	1,018,264	$	472,941	$	121,970	$	91,138	$	50,087	$	45,392	$	2,324,644
Special mention	—		—		—		—		—		—		—		—
Substandard	—		2,169		1,327		1,134		15		517		258		5,420
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	524,852	$	1,020,433	$	474,268	$	123,104	$	91,153	$	50,604	$	45,650	$	2,330,064
Construction and land development
Pass	$	492,218	$	777,114	$	422,749	$	21,028	$	1,403	$	14,953	$	496,079	$	2,225,544
Special mention	1,463		—		36,476		—		—		—		4,247		42,186
Substandard	—		—		192		—		—		—		—		192
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	493,681	$	777,114	$	459,417	$	21,028	$	1,403	$	14,953	$	500,326	$	2,267,922
Warehouse lending
Pass	$	155,588	$	48,455	$	990	$	1,640	$	78	$	—	$	3,720,101	$	3,926,852
Special mention	—		—		—		—		—		—		—		—
Substandard	—		—		—		—		—		—		—		—
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	155,588	$	48,455	$	990	$	1,640	$	78	$	—	$	3,720,101	$	3,926,852
Municipal & nonprofit
Pass	$	137,047	$	170,963	$	76,133	$	232,816	$	129,957	$	927,762	$	3,535	$	1,678,213
Special mention	—		4,194		2,331		—		—		—		—		6,525
Substandard	—		—		—		1,952		—		—		—		1,952
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	137,047	$	175,157	$	78,464	$	234,768	$	129,957	$	927,762	$	3,535	$	1,686,690
Other
Pass	$	17,738	$	16,175	$	14,671	$	6,909	$	2,177	$	71,880	$	30,133	$	159,683
Special mention	961		—		97		1,691		—		42		35		2,826
Substandard	—		135		189		—		97		196		18		635
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	18,699	$	16,310	$	14,957	$	8,600	$	2,274	$	72,118	$	30,186	$	163,144
Total by Risk Category
Pass	$	4,898,480	$	5,311,161	$	3,040,265	$	1,671,159	$	689,629	$	1,893,024	$	7,716,443	$	25,220,161
Special mention	6,929		121,939		140,967		87,861		13,696		57,787		47,660		476,839
Substandard	61,168		46,757		10,099		70,124		25,080		48,716		34,083		296,027
Doubtful	—		—		—		177		—		—		—		177
Loss	—		50		—		—		—		—		—		50
Total	$	4,966,577	$	5,479,907	$	3,191,331	$	1,829,321	$	728,405	$	1,999,527	$	7,798,186	$	25,993,254

36

	December 31, 2019
	Pass		Special Mention		Substandard		Doubtful		Loss		Total
	(in thousands)
Commercial and industrial	$	9,265,823	$	65,893	$	49,878	$	449	$	—	$	9,382,043
Commercial real estate
Owner occupied	2,265,566		9,579		41,768		—		—		2,316,913
Non-owner occupied	4,913,007		64,161		47,050		—		—		5,024,218
Multi-family	221,416		—		—		—		—		221,416
Construction and land development
Construction	1,157,169		17,592		2,147		—		—		1,176,908
Land	773,868		1,380		—		—		—		775,248
Residential real estate	2,141,336		366		5,962		—		—		2,147,664
Consumer	57,073		10		—		—		—		57,083
Total	$	20,795,258	$	158,981	$	146,805	$	449	$	—	$	21,101,493

	December 31, 2019
	Pass		Special Mention		Substandard		Doubtful		Loss		Total
	(in thousands)
Current (up to 29 days past due)	$	20,785,118	$	158,907	$	120,897	$	265	$	—	$	21,065,187
Past due 30 - 59 days	8,263		58		7,092		—		—		15,413
Past due 60 - 89 days	1,481		16		861		—		—		2,358
Past due 90 days or more	396		—		17,955		184		—		18,535
Total	$	20,795,258	$	158,981	$	146,805	$	449	$	—	$	21,101,493

Troubled Debt Restructurings

A TDR loan is a loan on which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. The loan terms that have been modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. The majority of the Company's modifications are extensions in terms or deferral of payments which result in no lost principal or interest followed by reductions in interest rates or accrued interest. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.

As of September 30, 2020, the Company's TDR loans totaled $60.8 million. During the three months ended September 30, 2020, the Company had 20 new TDR loans with a recorded investment of $25.0 million. During the nine months ended September 30, 2020, the Company had 22 new TDR loans with a recorded investment of $35.7 million.The Company has $2.7 million allowance allocated to these loans as of September 30, 2020 and has committed to lend additional amounts totaling $4.2 million.

The following table presents TDR loans for the periods presented:

	September 30, 2020
	Number of Loans	Recorded Investment
	(dollars in thousands)
Commercial and industrial
Tech & Innovation	3	$	12,111
Other commercial and industrial	16	30,270
CRE - owner occupied	3	2,335
CRE - non-owner occupied
Hotel Franchise Finance	2	5,746
Other CRE - non-owned occupied	3	10,295
Total	27	$	60,757

37

During the three months ended September 30, 2019, the Company had three new TDR loans with a recorded investment of $11.8 million. During the nine months ended September 30, 2019, the Company had seven new TDR loans with a recorded investment of $40.7 million. No principal amounts were forgiven and there were no waived fees or other expenses resulting from these TDR loans.

As of December 31, 2019, commitments outstanding on TDR loans totaled $0.2 million.

A TDR loan is deemed to have a payment default when it becomes past due 90 days under the modified terms, goes on nonaccrual status, or is restructured again. Payment defaults, along with other qualitative indicators, are considered by management in the determination of the allowance for credit losses. During the three months ended September 30, 2020, there was one CRE, owner occupied loan with a recorded investment of $0.8 million for which there was a payment default within 12 months following the modification. During the nine months ended September 30, 2020, there were two CRE, owner occupied loans with a recorded investment of $1.5 million for which there was a payment default within 12 months following the modification. There was no increase to the allowance for credit losses or a writeoff that resulted from these TDR redefaults during the nine months ended September 30, 2020. During the three months ended September 30, 2019, there were no TDR loans for which there was a payment default. During the nine months ended September 30, 2019, there were two TDR loans with a recorded investment of $0.4 million for which there was a payment default.

The CARES Act, signed into law on March 27, 2020, permits financial institutions to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 that would otherwise be characterized as TDRs and suspend any determination related thereto if (i) the loan modification is made between March 1, 2020 and the earlier of December 31, 2020 or 60 days after the end of the coronavirus emergency declaration and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. In addition, federal bank regulatory authorities have issued guidance to encourage financial institutions to make loan modifications for borrowers affected by COVID-19 and have assured financial institutions that they will neither receive supervisory criticism for such prudent loan modifications, nor be required by examiners to automatically categorize COVID-19-related loan modifications as TDRs. The Company is applying this guidance to qualifying loan modifications.

The terms of certain other loans were modified during the three and nine months ended September 30, 2020 that did not meet the definition of a TDR. The modification of these loans involved either a modification of the terms of a loan to borrowers who were not experiencing financial difficulties prior to the pandemic or a delay in a payment that was considered to be insignificant.

Collateral-Dependent Loans

The following table presents the amortized cost basis of collateral-dependent loans as of September 30, 2020:

	September 30, 2020
	Real Estate Collateral		Other Collateral		Total
	(in thousands)
Commercial and industrial
Tech & Innovation	$	—	$	49,921	$	49,921
Other commercial and industrial	—		70,407		70,407
CRE - owner occupied	44,213		—		44,213
CRE - non-owner occupied
Hotel Franchise Finance	27,649		—		27,649
Other CRE - non-owned occupied	61,403		—		61,403
Residential	758		—		758
Construction and land development	—		—		—
Warehouse lending	—		—		—
Municipal & nonprofit	—		—		—
Other	—		429		429
Total	$	134,023	$	120,757	$	254,780

The Company did not identify any significant changes in the extent to which collateral secures its collateral dependent loans, whether because of a general deterioration or some other reason during the period ended September 30, 2020.

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Allowance for Credit Losses

Management considers the level of allowance for credit losses to be a reasonable and supportable estimate of expected credit losses inherent within the Company's loans held for investment portfolio as of September 30, 2020. In addition to the allowance for credit losses on funded loan balances, the Company maintains a separate allowance for credit losses related to off-balance sheet credit exposures, including unfunded loan commitments, and this amount is included in other liabilities on the consolidated balance sheets. The Company's allowance for credit losses on unfunded loan commitments totaled $44.4 million and $9.0 million as of September 30, 2020 and December 31, 2019, respectively.

The below tables reflect the activity in the allowance for credit losses for loans held for investment by loan portfolio segment:

	Three Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	June 30, 2020								September 30, 2020
	(1)								(1)
	(in thousands)
Commercial and industrial
Tech & Innovation	$	54,559	$	(9,359)	$	6,364	$	—	$	38,836
Other commercial and industrial	109,930		(621)		748		(192)		108,753
CRE - owner occupied	15,587		3,897		83		(5)		19,406
CRE - non-owner occupied
Hotel Franchise Finance	35,864		2,163		—		—		38,027
Other CRE - non-owned occupied	32,672		9,196		1,246		—		40,622
Residential	1,725		16		307		(355)		1,789
Construction and land development	35,792		2,983		—		(6)		38,781
Warehouse lending	743		95		—		—		838
Municipal & nonprofit	17,128		768		—		—		17,896
Other	6,550		(934)		25		(21)		5,612
Total	$	310,550	$	8,204	$	8,773	$	(579)	$	310,560

(1)Includes an estimate of future recoveries.

	Nine Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	January 1, 2020								September 30, 2020
	(1)								(1)
	(in thousands)
Commercial and industrial
Tech & Innovation	$	22,394	$	25,556	$	9,114	$	—	$	38,836
Other commercial and industrial	95,784		13,653		2,684		(2,000)		108,753
CRE - owner occupied	10,420		9,100		126		(12)		19,406
CRE - non-owner occupied
Hotel Franchise Finance	14,104		23,923		—		—		38,027
Other CRE - non-owned occupied	10,503		30,684		2,131		(1,566)		40,622
Residential	3,814		(2,103)		307		(385)		1,789
Construction and land development	6,218		32,540		—		(23)		38,781
Warehouse lending	246		592		—		—		838
Municipal & nonprofit	17,397		499		—		—		17,896
Other	6,045		(314)		231		(112)		5,612
Total	$	186,925	$	134,130	$	14,593	$	(4,098)	$	310,560

(1)Includes an estimate of future recoveries.

Accrued interest receivable on loans totaled $120.1 million at September 30, 2020 and is excluded from the estimate of credit losses.

39

	Three Months Ended September 30, 2019
	June 30, 2019		Charge-offs		Recoveries		Provision for (Reversal of) Credit Losses		September 30, 2019
	(in thousands)
Construction and land development	$	26,091	$	—	$	(17)	$	1,210	$	27,318
Commercial real estate	41,258		139		(8)		4,817		45,944
Residential real estate	12,606		9		(131)		804		13,532
Commercial and industrial	79,635		1,950		(2,549)		(2,815)		77,419
Consumer	819		1		(6)		(16)		808
Total	$	160,409	$	2,099	$	(2,711)	$	4,000	$	165,021

	Nine Months Ended September 30, 2019
	December 31, 2018		Charge-offs		Recoveries		Provision for (Reversal of) Credit Losses		September 30, 2019
	(in thousands)
Construction and land development	$	22,513	$	141	$	(81)	$	4,865	$	27,318
Commercial real estate	34,829		139		(900)		10,354		45,944
Residential real estate	11,276		594		(251)		2,599		13,532
Commercial and industrial	83,118		6,092		(3,521)		(3,128)		77,419
Consumer	981		2		(19)		(190)		808
Total	$	152,717	$	6,968	$	(4,772)	$	14,500	$	165,021

The following tables disaggregate the Company's allowance for credit losses and loan balance by measurement methodology:

	September 30, 2020
	Loans						Allowance
	Collectively Evaluated for Credit Loss		Individually Evaluated for Credit Loss		Total		Collectively Evaluated for Credit Loss		Individually Evaluated for Credit Loss		Total
	(in thousands)
Commercial and industrial
Tech & Innovation	$	2,227,995	$	49,894	$	2,277,889	$	38,836	$	—	$	38,836
Other commercial and industrial	5,906,731		86,981		5,993,712		102,011		6,742		108,753
CRE - owner occupied	1,912,127		58,036		1,970,163		19,406		—		19,406
CRE - non-owner occupied
Hotel Franchise Finance	1,885,451		57,435		1,942,886		35,312		2,715		38,027
Other CRE - non-owned occupied	3,355,259		78,673		3,433,932		40,518		104		40,622
Residential	2,324,676		5,388		2,330,064		1,789		—		1,789
Construction and land development	2,267,922		—		2,267,922		38,781		—		38,781
Warehouse lending	3,926,852		—		3,926,852		838		—		838
Municipal & nonprofit	1,684,738		1,952		1,686,690		17,454		442		17,896
Other	162,518		626		163,144		5,569		43		5,612
Total	$	25,654,269	$	338,985	$	25,993,254	$	300,514	$	10,046	$	310,560

40

	Commercial Real Estate-Owner Occupied		Commercial Real Estate-Non-Owner Occupied		Commercial and Industrial		Residential Real Estate		Construction and Land Development		Consumer		Total Loans
	(in thousands)
Loans as of December 31, 2019:
Recorded Investment
Impaired loans with an allowance recorded	$	—	$	11,913	$	6,919	$	—	$	2,147	$	—	$	20,979
Impaired loans with no allowance recorded	17,736		23,625		42,065		5,600		6,274		24		95,324
Total loans individually evaluated for impairment	17,736		35,538		48,984		5,600		8,421		24		116,303
Loans collectively evaluated for impairment	2,296,342		5,159,921		9,333,059		2,142,045		1,943,735		57,059		20,932,161
Loans acquired with deteriorated credit quality	2,835		50,175		—		19		—		—		53,029
Total recorded investment	$	2,316,913	$	5,245,634	$	9,382,043	$	2,147,664	$	1,952,156	$	57,083	$	21,101,493
Unpaid Principal Balance
Impaired loans with an allowance recorded	$	—	$	11,949	$	9,844	$	—	$	2,262	$	—	24,055
Impaired loans with no allowance recorded	18,681		24,738		43,848		5,708		6,413		52		99,440
Total loans individually evaluated for impairment	18,681		36,687		53,692		5,708		8,675		52		123,495
Loans collectively evaluated for impairment	2,297,168		5,177,477		9,312,100		2,113,893		1,963,116		57,383		20,921,137
Loans acquired with deteriorated credit quality	3,577		60,191		—		72		—		—		63,840
Total unpaid principal balance	$	2,319,426	$	5,274,355	$	9,365,792	$	2,119,673	$	1,971,791	$	57,435	$	21,108,472
Related Allowance for Credit Losses
Impaired loans with an allowance recorded	$	—	$	1,219	$	1,050	$	—	$	507	$	—	$	2,776
Impaired loans with no allowance recorded	—		—		—		—		—		—		—
Total loans individually evaluated for impairment	—		1,219		1,050		—		507		—		2,776
Loans collectively evaluated for impairment	13,842		32,114		81,252		13,714		23,387		614		164,923
Loans acquired with deteriorated credit quality	—		98		—		—		—		—		98
Total allowance for credit losses	$	13,842	$	33,431	$	82,302	$	13,714	$	23,894	$	614	$	167,797

Loan Purchases and Sales

The following table presents loan purchases by portfolio segment during the three and nine months ended September 30, 2020:

	Three		Nine
	Months Ended		Months Ended
	September 30, 2020		September 30, 2020
	(in thousands)
Commercial and industrial	$	271,085	$	663,171
Residential	243,311		919,509
Warehouse lending	—		99,446
Municipal & nonprofit	—		1,594
Total	$	514,396	$	1,683,720

There were no loans purchased with more-than-insignificant deterioration in credit quality during the three and nine months ended September 30, 2020. There were no significant loan sales during the three and nine months ended September 30, 2020.

41

The following table presents loan purchases and sales by class during the three and nine months ended September 30, 2019.

	Three Months Ended September 30, 2019				Nine Months Ended September 30, 2019
	Purchases		Sales		Purchases		Sales
	(in thousands)				(in thousands)
Commercial and industrial	$	260,621	$	14,238	$	787,286	$	49,068
Commercial real estate - non-owner occupied	19,177		—		49,211		—
Construction and land development	608		—		34,490		—
Residential real estate	428,665		—		959,190		—
Total	$	709,071	$	14,238	$	1,830,177	$	49,068

The Company recognized a net loss of less than $0.1 million and $0.5 million on loan sales during the three and nine months ended September 30, 2019, respectively.

42

4. OTHER BORROWINGS

The following table summarizes the Company’s borrowings as of September 30, 2020 and December 31, 2019: 

	September 30, 2020		December 31, 2019
	(in thousands)
Short-Term:
Federal funds purchased	$	—	$	—
FHLB advances	10,000		—
Total short-term borrowings	$	10,000	$	—

The Company maintains federal fund lines of credit totaling $2.4 billion as of September 30, 2020, which have rates comparable to the federal funds effective rate plus 0.10% to 0.20%. As of September 30, 2020 and December 31, 2019, there were no outstanding balances on the Company's federal fund lines of credit.

The Company also maintains secured lines of credit with the FHLB and the FRB. The Company’s borrowing capacity is determined based on collateral pledged, generally consisting of investment securities and loans, at the time of the borrowing. The Company has a PPP lending facility with the FRB that allows the Company to pledge loans originated under the PPP in return for dollar for dollar funding from the FRB, which would provide up to $1.8 billion in additional credit. The amount of available credit under the PPP lending facility will decline each period as these loans are paid down. At September 30, 2020, the Company had no amounts outstanding under its line of credit or its PPP lending facility with the FRB and had $10.0 million in borrowings under its lines of credit with the FHLB. As of September 30, 2020 and December 31, 2019, the Company had additional available credit with the FHLB of approximately $4.4 billion and $4.5 billion, respectively, and with the FRB of approximately $2.4 billion and $1.1 billion, respectively.

Other short-term borrowing sources available to the Company include customer repurchase agreements, which totaled $19.7 million and $16.7 million at September 30, 2020 and December 31, 2019, respectively. The weighted average rate on customer repurchase agreements was 0.18% and 0.15% as of September 30, 2020 and December 31, 2019, respectively.

43

5. QUALIFYING DEBT

Subordinated Debt

The Company's subordinated debt consists of three separate issuances. The Parent issued $175.0 million of subordinated debentures in June 2016, which were recorded net of issuance costs of $5.5 million, and mature July 1, 2056. Beginning on or after July 1, 2021, the Company may redeem the debentures, in whole or in part, at their principal amount plus any accrued and unpaid interest. The debentures have a fixed interest rate of 6.25% per annum.

In June 2015, WAB issued $150.0 million of subordinated debt, which was recorded net of debt issuance costs of $1.8 million, and matures July 15, 2025. The subordinated debt is redeemable by WAB, in whole or in part, on or after July 15, 2020 and on every interest payment date thereafter, for a price equal to the principal amount plus accrued and unpaid interest. The subordinated debt had a fixed interest rate of 5.00% through June 30, 2020, which then converted to a variable rate of 3.20% plus three-month LIBOR through maturity. Subsequent to September 30, 2020, WAB redeemed $75 million of this subordinated debt issuance.

In May 2020, WAB issued $225.0 million of subordinated debt, which was recorded net of debt issuance costs of $3.1 million, and matures June 1, 2030. The subordinated debt is redeemable by WAB, in whole or in part, on or after June 1, 2025 and on every interest payment date thereafter, at a redemption price equal to the principal amount plus accrued and unpaid interest. The subordinated debt has a fixed interest rate of 5.25% through June 1, 2025 and then converts to a floating rate per annum equal to the three-month SOFR plus 512 basis points for each quarterly interest period during the floating rate period.

To hedge the interest rate risk on the Company's 2015 and 2016 subordinated debt issuances, the Company entered into fair value interest rate hedges with receive fixed/pay variable swaps.

The carrying value of all subordinated debt issuances, which includes the fair value of the related hedges, totals $545.3 million and $319.2 million at September 30, 2020 and December 31, 2019, respectively.

Junior Subordinated Debt

The Company has formed or acquired through acquisition eight statutory business trusts, which exist for the exclusive purpose of issuing Cumulative Trust Preferred Securities.

With the exception of debt issued by Bridge Capital Trust I and Bridge Capital Trust II, junior subordinated debt is recorded at fair value at each reporting date due to the FVO election made by the Company under ASC 825. The Company did not make the FVO election for the junior subordinated debt acquired as part of the Bridge acquisition. Accordingly, the carrying value of these trusts does not reflect the current fair value of the debt and includes a fair market value adjustment established at acquisition that is being accreted over the remaining life of the trusts.

The carrying value of junior subordinated debt was $73.5 million and $74.4 million as of September 30, 2020 and December 31, 2019, respectively. The weighted average interest rate of all junior subordinated debt as of September 30, 2020 was 2.57%, which is three-month LIBOR plus the contractual spread of 2.34%, compared to a weighted average interest rate of 4.25% at December 31, 2019.

In the event of certain changes or amendments to regulatory requirements or federal tax rules, the debt is redeemable in whole. The obligations under these instruments are fully and unconditionally guaranteed by the Company and rank subordinate and junior in right of payment to all other liabilities of the Company. Based on guidance issued by the FRB, the Company's securities continue to qualify as Tier 1 Capital.

44

6. STOCKHOLDERS' EQUITY

Stock-Based Compensation

Restricted Stock Awards

Restricted stock awards granted to employees generally vest over a 3-year period. Stock grants made to non-employee WAL directors in 2020 were fully vested on July 1, 2020. The Company estimates the compensation cost for stock grants based upon the grant date fair value. Stock compensation expense is recognized on a straight-line basis over the requisite service period for the entire award. The aggregate grant date fair value for the restricted stock awards granted during the three and nine months ended September 30, 2020 was zero and $22.3 million, respectively. Stock compensation expense related to restricted stock awards granted to employees are included in Salaries and employee benefits in the Consolidated Income Statement. For restricted stock awards granted to WAL directors, related stock compensation expense is included in Legal, professional, and directors' fees. For the three and nine months ended September 30, 2020, the Company recognized $4.5 million and $15.3 million in stock-based compensation expense related to these stock grants, compared to $4.0 million and $13.7 million for the three and nine months ended September 30, 2019.

In addition, the Company previously granted shares of restricted stock to certain members of executive management that had both performance and service conditions that affect vesting. There were no such grants made during the three and nine months ended September 30, 2020 and 2019, however expense is still being recognized for a grant made in 2017 with a four-year vesting period. For the three and nine months ended September 30, 2020, the Company recognized $0.3 million and $0.9 million in stock-based compensation expense related to these performance-based restricted stock grants, compared to $0.5 million and $1.5 million for the three and nine months ended September 30, 2019.

Performance Stock Units

The Company grants performance stock units to members of its executive management that do not vest unless the Company achieves a specified cumulative EPS target and a TSR performance measure over a three-year performance period. The number of shares issued will vary based on the cumulative EPS target and relative TSR performance factor that is achieved. The Company estimates the cost of performance stock units based upon the grant date fair value and expected vesting percentage over the three-year performance period. For the three and nine months ended September 30, 2020, the Company recognized $1.8 million and $5.3 million in stock-based compensation expense related to these performance stock units, compared to $1.6 million and $4.5 million for the three and nine months ended September 30, 2019.

The three-year performance period for the 2017 grant ended on December 31, 2019, and the Company's cumulative EPS and TSR performance measure for the performance period exceeded the level required for a maximum award under the terms of the grant. As a result, 136,334 shares became fully vested and was distributed to executive management in the first quarter of 2020.

Common Stock Repurchase

The Company's common stock repurchase program was renewed through December 2020, authorizing the Company to repurchase up to $250.0 million of its outstanding common stock. Effective April 17, 2020, the Company temporarily suspended its stock repurchase program. Prior to this decision and pursuant to the repurchase plan, the Company repurchased 2,066,479 shares of its common stock at a weighted average price of $34.65 for a total payment of $71.7 million. During the three and nine months ended September 30, 2019, the Company repurchased 1,000,000 and 2,733,603 shares of its common stock at a weighted average price of $43.63 and $42.25 for a total payment of $43.7 million and $115.6 million, respectively.

Cash Dividend

During the three and nine months ended September 30, 2020, the Company declared and paid a quarterly cash dividend of $0.25 per share, for a total dividend payment to shareholders of $25.2 million and $76.0 million, respectively. During the three and nine months ended September 30, 2019, the Company declared and paid one quarterly cash dividend of $0.25 per share of common stock, totaling $25.7 million.

Treasury Shares

Treasury share purchases represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. During the three and nine months ended September 30, 2020, the Company purchased treasury shares of 14,398 and 164,564 at a weighted average price of $35.73 and $50.86 per share, respectively. During the three and nine months ended September 30, 2019, the Company purchased treasury shares of 33,031 and 209,183 at a weighted average price of $46.33 and $45.78 per share, respectively.

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7. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

The following table summarizes the changes in accumulated other comprehensive income by component, net of tax, for the periods indicated: 

	Three Months Ended September 30,
	Unrealized holding gains (losses) on AFS		Unrealized holding gains (losses) on SERP		Unrealized holding gains (losses) on junior subordinated debt		Impairment loss on securities		Total
	(in thousands)
Balance, June 30, 2020	$	66,809	$	(313)	$	7,181	$	—	$	73,677
Other comprehensive income (loss) before reclassifications	7,592		(3)		(2,681)		—		4,908
Amounts reclassified from AOCI	—		—		—		—		—
Net current-period other comprehensive income (loss)	7,592		(3)		(2,681)		—		4,908
Balance, September 30, 2020	$	74,401	$	(316)	$	4,500	$	—	$	78,585
Balance, June 30, 2019	$	19,709	$	357	$	6,171	$	144	$	26,381
Other comprehensive income (loss) before reclassifications	11,014		(18)		598		—		11,594
Amounts reclassified from AOCI	(2,232)		—		—		(144)		(2,376)
Net current-period other comprehensive income (loss)	8,782		(18)		598		(144)		9,218
Balance, September 30, 2019	$	28,491	$	339	$	6,769	$	—	$	35,599
	Nine Months Ended September 30,
	Unrealized holding gains (losses) on AFS		Unrealized holding gains (losses) on SERP		Unrealized holding gains (losses) on junior subordinated debt		Impairment loss on securities		Total
	(in thousands)
Balance, December 31, 2019	$	21,399	$	(20)	$	3,629	$	—	$	25,008
Other comprehensive income (loss) before reclassifications	53,176		(296)		871		—		53,751
Amounts reclassified from AOCI	(174)		—		—		—		(174)
Net current-period other comprehensive income (loss)	53,002		(296)		871		—		53,577
Balance, September 30, 2020	$	74,401	$	(316)	$	4,500	$	—	$	78,585
Balance, December 31, 2018	$	(47,591)	$	392	$	13,433	$	144	$	(33,622)
Other comprehensive income (loss) before reclassifications	78,314		(53)		(6,664)		—		71,597
Amounts reclassified from AOCI	(2,232)		—		—		(144)		(2,376)
Net current-period other comprehensive income (loss)	76,082		(53)		(6,664)		(144)		69,221
Balance, September 30, 2019	$	28,491	$	339	$	6,769	$	—	$	35,599

The following table presents reclassifications out of accumulated other comprehensive income:

	Three Months Ended September 30,				Nine Months Ended September 30,
Income Statement Classification	2020		2019		2020		2019
	(in thousands)
Gain (loss) on sales of investment securities, net	$	—	$	3,152	$	230	$	3,152
Income tax (expense) benefit	—		(776)		(56)		(776)
Net of tax	$	—	$	2,376	$	174	$	2,376

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8. DERIVATIVES AND HEDGING ACTIVITIES

The Company is a party to various derivative instruments. Derivative instruments are contracts between two or more parties that have a notional amount and an underlying variable, require a small or no initial investment, and allow for the net settlement of positions. A derivative’s notional amount serves as the basis for the payment provision of the contract and takes the form of units, such as shares or dollars. A derivative’s underlying variable is a specified interest rate, security price, commodity price, foreign exchange rate, index, or other variable. The interaction between the notional amount and the underlying variable determines the number of units to be exchanged between the parties and influences the fair value of the derivative contract.

The primary type of derivatives that the Company uses are interest rate swaps. Generally, these instruments are used to help manage the Company's exposure to interest rate risk and meet client financing and hedging needs.

Derivatives are recorded at fair value on the Consolidated Balance Sheets, after taking into account the effects of bilateral collateral and master netting agreements. These agreements allow the Company to settle all derivative contracts held with the same counterparty on a net basis, and to offset net derivative positions with related cash collateral, where applicable.

As of September 30, 2020, December 31, 2019, and September 30, 2019, the Company does not have any outstanding cash flow hedges.

Derivatives Designated in Hedge Relationships

The Company utilizes derivatives that have been designated as part of a hedge relationship in accordance with the applicable accounting guidance to minimize the exposure to changes in benchmark interest rates and volatility of net interest income and EVE to interest rate fluctuations. The primary derivative instruments used to manage interest rate risk are interest rate swaps, which convert the contractual interest rate index of agreed-upon amounts of assets and liabilities (i.e., notional amounts) from either a fixed rate to a floating rate, or from a floating rate to a fixed rate.

The Company has entered into pay fixed/receive variable interest rate swaps designated as fair value hedges of certain fixed rate loans. As a result, the Company receives variable-rate interest payments in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts.

The Company has also entered into receive fixed/pay variable interest rate swaps, designated as fair value hedges on its fixed rate 2015 and 2016 subordinated debt offerings. As a result, the Company is paying a floating rate of three-month LIBOR plus 3.16% and is receiving semi-annual fixed payments of 5.00% to match the payments on the $150.0 million subordinated debt. For the fair value hedge on the Parent's $175.0 million subordinated debentures issued on June 16, 2016, the Company is paying a floating rate of three-month LIBOR plus 3.25% and is receiving quarterly fixed payments of 6.25% to match the payments on the debt.

Derivatives Not Designated in Hedge Relationships

Management also enters into certain foreign exchange derivative contracts and back-to-back interest rate swaps which are not designated as accounting hedges. Foreign exchange derivative contracts include spot, forward, forward window, and swap contracts. The purpose of these derivative contracts is to mitigate foreign currency risk on transactions entered into, or on behalf of customers. Contracts with customers, along with the related derivative trades that the Company places, are both remeasured at fair value, and are referred to as economic hedges since they economically offset the Company's exposure. The Company's back-to-back interest rate swaps are used to manage long-term interest rate risk.

Fair Value Hedges

As of September 30, 2020 and December 31, 2019, the following amounts are reflected on the Consolidated Balance Sheets related to cumulative basis adjustments for fair value hedges:

	September 30, 2020				December 31, 2019
	Carrying Value of Hedged Assets/(Liabilities)		Cumulative Fair Value Hedging Adjustment (1)		Carrying Value of Hedged Assets/(Liabilities)		Cumulative Fair Value Hedging Adjustment (1)
	(in thousands)
Loans - HFI, net of deferred loan fees and costs	$	596,505	$	92,352	$	578,063	$	53,292
Qualifying debt	(323,386)		(3,417)		(319,197)		401

(1)Included in the carrying value of the hedged assets/(liabilities).

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For the Company's derivative instruments that are designated and qualify as a fair value hedge, the effective portion is recorded as a basis adjustment to the hedged asset or liability, and the ineffective portion is recorded in non-interest income.

Fair Values, Volume of Activity, and Gain/Loss Information Related to Derivative Instruments

The following table summarizes the fair values of the Company's derivative instruments on a gross and net basis as of September 30, 2020, December 31, 2019, and September 30, 2019. The change in the notional amounts of these derivatives from September 30, 2019 to September 30, 2020 indicates the volume of the Company's derivative transaction activity during these periods. The derivative asset and liability balances are presented on a gross basis, prior to the application of bilateral collateral and master netting agreements. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow the Company to settle all derivative contracts with the same counterparty on a net basis and to offset the net derivative position with the related collateral. Where master netting agreements are not in effect or are not enforceable under bankruptcy laws, the Company does not adjust those derivative amounts with counterparties. The fair value of derivative contracts, after taking into account the effects of master netting agreements, is included in other assets or other liabilities on the Consolidated Balance Sheets, as indicated in the following table:

	September 30, 2020						December 31, 2019						September 30, 2019
			Fair Value						Fair Value						Fair Value
	Notional Amount		Derivative Assets		Derivative Liabilities		Notional Amount		Derivative Assets		Derivative Liabilities		Notional Amount		Derivative Assets		Derivative Liabilities
	(in thousands)
Derivatives designated as hedging instruments:
Fair value hedges
Interest rate swaps	$	692,348	$	3,417	$	92,352	$	862,952	$	1,778	$	55,471	$	865,321	$	—	$	63,970
Total	692,348		3,417		92,352		862,952		1,778		55,471		865,321		—		63,970
Netting adjustments (1)	—		—		—		—		21		21		—		—		—
Net	$	692,348	$	3,417	$	92,352	$	862,952	$	1,757	$	55,450	$	865,321	$	—	$	63,970
Derivatives not designated as hedging instruments:
Foreign currency contracts	$	38,922	$	460	$	401	$	6,711	$	44	$	18	$	15,329	$	191	$	127
Interest rate swaps	3,517		242		242		2,932		81		81		2,932		124		124
Total	$	42,439	$	702	$	643	$	9,643	$	125	$	99	$	18,261	$	315	$	251

(1)Netting adjustments represent the amounts recorded to convert the Company's derivative balances from a gross basis to a net basis in accordance with the applicable accounting guidance.

Counterparty Credit Risk

Like other financial instruments, derivatives contain an element of credit risk. This risk is measured as the expected replacement value of the contracts. Management enters into bilateral collateral and master netting agreements that provide for the net settlement of all contracts with the same counterparty. Additionally, management monitors counterparty credit risk exposure on each contract to determine appropriate limits on the Company's total credit exposure across all product types, which may require the Company to post collateral to counterparties when these contracts are in a net liability position and conversely, for counterparties to post collateral to the Company when these contracts are in a net asset position. In general, the Company has a zero credit threshold with regard to derivative exposure with counterparties. Management reviews the Company's collateral positions on a daily basis and exchanges collateral with counterparties in accordance with standard ISDA documentation and other related agreements. The Company generally posts or holds collateral in the form of cash deposits or highly rated securities issued by the U.S. Treasury or government-sponsored enterprises, such as GNMA, FNMA, and FHLMC. The total collateral pledged by the Company to counterparties exceeded its net derivative liabilities as of September 30, 2020, December 31, 2019, and September 30, 2019, resulting in excess collateral postings of $14.6 million, $29.2 million and $31.0 million, respectively.

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The following table summarizes the Company's largest exposure to an individual counterparty at the dates indicated:

	September 30, 2020		December 31, 2019		September 30, 2019
	(in thousands)
Largest gross exposure (derivative asset) to an individual counterparty	$	3,417	$	1,757	$	—
Collateral posted by this counterparty	—		1,610		—
Derivative liability with this counterparty	—		—		—
Collateral pledged to this counterparty	—		—		—
Net exposure after netting adjustments and collateral	$	3,417	$	147	$	—

9. EARNINGS PER SHARE

Diluted EPS is based on the weighted average outstanding common shares during each period, including common stock equivalents. Basic EPS is based on the weighted average outstanding common shares during the period.

The following table presents the calculation of basic and diluted EPS: 

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands, except per share amounts)
Weighted average shares - basic	99,850		102,041		100,322		103,024
Dilutive effect of stock awards	209		410		252		444
Weighted average shares - diluted	100,059		102,451		100,574		103,468
Net income	$	135,769	$	127,375	$	313,005	$	371,107
Earnings per share - basic	1.36		1.25		3.12		3.60
Earnings per share - diluted	1.36		1.24		3.11		3.59

The Company had no anti-dilutive stock options outstanding at each of the periods ended September 30, 2020 and 2019.

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10. INCOME TAXES  

The Company's effective tax rate was 18.50% and 18.30% for the three months ended September 30, 2020 and 2019, respectively. For the nine months ended September 30, 2020 and 2019, the Company's effective tax rate was 18.05% and 17.52%, respectively. The increase in the effective tax rate from the three and nine months ended September 30, 2019 is due primarily to tax expense associated with a surrender of bank owned life insurance, detriments from vested stock compensation and increased state tax accruals, partially offset by increases in forecasted tax-exempt income and investment tax credits in 2020.

As of September 30, 2020, the net deferred tax asset was $46.6 million, an increase of $28.6 million from December 31, 2019. This overall increase in the net deferred tax asset was primarily the result of an increase in the allowance for credit losses under the new CECL accounting guidance, which upon adoption on January 1, 2020, increased the deferred tax asset by $8.7 million. Expected tax credit carryovers which were not fully offset by additional unrealized gains on AFS securities also contributed to the increase. For a detailed discussion of the impact of adoption of CECL, see "Note 1. Summary of Significant Accounting Policies."

Although realization is not assured, the Company believes that the realization of the recognized deferred tax asset of $46.6 million at September 30, 2020 is more-likely-than-not based on expectations as to future taxable income and based on available tax planning strategies that could be implemented if necessary to prevent a carryover from expiring.

At September 30, 2020 and December 31, 2019, the Company had no deferred tax valuation allowance.

As of September 30, 2020, the Company’s gross federal NOL carryovers after current year-to-date utilization, all of which are subject to limitations under Section 382 of the IRC, totaled approximately $44.6 million for which a deferred tax asset of $5.2 million has been recorded, reflecting the expected benefit of these remaining federal NOL carryovers. The Company also has varying gross amounts of state NOL carryovers, with the most significant in Arizona. The gross Arizona NOL carryovers totaled approximately $0.7 million. A deferred tax asset balance of $0.1 million as of September 30, 2020 has been recorded to reflect the expected benefit of all remaining state NOL carryovers.

LIHTC and renewable energy projects

The Company holds ownership interests in limited partnerships and limited liability companies that invest in affordable housing and renewable energy projects. These investments are designed to generate a return primarily through the realization of federal tax credits and deductions. The limited liability entities are considered to be VIEs; however, as a limited partner, the Company is not the primary beneficiary and is not required to consolidate these entities.

Investments in LIHTC and renewable energy total $414.3 million and $409.4 million as of September 30, 2020 and December 31, 2019, respectively. Unfunded LIHTC and renewable energy obligations are included as part of other liabilities on the Consolidated Balance Sheets and total $161.5 million and $191.0 million as of September 30, 2020 and December 31, 2019, respectively. For the three months ended September 30, 2020 and 2019, $14.5 million and $13.0 million, respectively, of amortization related to LIHTC investments was recognized as a component of income tax expense. For the nine months ended September 30, 2020 and 2019, $34.2 million and $33.6 million, respectively, of amortization related to LIHTC investments was recognized as a component of income tax expense.

11. COMMITMENTS AND CONTINGENCIES

Unfunded Commitments and Letters of Credit

The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and letters of credit. They involve, to varying degrees, elements of credit risk in excess of amounts recognized on the Consolidated Balance Sheets.

Lines of credit are obligations to lend money to a borrower. Credit risk arises when the borrower's current financial condition may indicate less ability to pay than when the commitment was originally made. In the case of letters of credit, the risk arises from the potential failure of the customer to perform according to the terms of a contract. In such a situation, the third party might draw on the letter of credit to pay for completion of the contract and the Company would look to its customer to repay these funds with interest. To minimize the risk, the Company uses the same credit policies in making commitments and conditional obligations as it would for a loan to that customer.

Letters of credit and financial guarantees are commitments issued by the Company to guarantee the performance of a customer to a third party in borrowing arrangements. The Company generally has recourse to recover from the customer any amounts paid under the guarantees. Typically, letters of credit issued have expiration dates within one year.

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A summary of the contractual amounts for unfunded commitments and letters of credit are as follows: 

	September 30, 2020		December 31, 2019
	(in thousands)
Commitments to extend credit, including unsecured loan commitments of $1,046,504 at September 30, 2020 and $895,175 at December 31, 2019	$	8,379,196	$	8,348,421
Credit card commitments and financial guarantees	283,703		302,909
Letters of credit, including unsecured letters of credit of $9,513 at September 30, 2020 and $5,850 at December 31, 2019	156,170		175,778
Total	$	8,819,069	$	8,827,108

Commitments to extend credit are agreements to lend to a customer provided that there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral.

The Company has exposure to credit losses from unfunded commitments and letters of credit. As funds have not been disbursed on these commitments, they are not reported as loans outstanding. Credit losses related to these commitments are included in other liabilities as a separate loss contingency and are not included in the allowance for credit losses reported in "Note 3. Loans, Leases and Allowance for Credit Losses" of these Unaudited Consolidated Financial Statements. This loss contingency for unfunded loan commitments and letters of credit was $44.4 million and $9.0 million as of September 30, 2020 and December 31, 2019, respectively. Changes to this liability are adjusted through the provision for credit losses in the Consolidated Income Statement. In addition, upon adoption of ASU 2016-13 on January 1, 2020, the Company recorded an increase of $15.1 million to this liability, which was recorded as an adjustment to retained earnings, net of tax.

Concentrations of Lending Activities

The Company’s lending activities are driven in large part by the customers served in the market areas where the Company has branch offices in the states of Arizona, Nevada, and California. Despite the geographic concentration of lending activities, the Company does not have a single external customer from which it derives 10% or more of its revenues. The Company monitors concentrations within four broad categories: geography, industry, product, and collateral. The Company's loan portfolio includes significant credit exposure to the CRE market. As of each of the periods ended September 30, 2020 and December 31, 2019, CRE related loans accounted for approximately 38% and 45% of total loans, respectively. Substantially all of these loans are secured by first liens with an initial loan-to-value ratio of generally not more than 75%. Approximately 29% and 31% of these CRE loans, excluding construction and land loans, were owner-occupied at September 30, 2020 and December 31, 2019, respectively.

Contingencies

The Company is involved in various lawsuits of a routine nature that are being handled and defended in the ordinary course of the Company’s business. Expenses are being incurred in connection with these lawsuits, but in the opinion of management, based in part on consultation with outside legal counsel, the resolution of these lawsuits and associated defense costs will not have a material impact on the Company’s financial position, results of operations, or cash flows.

Lease Commitments

The Company has operating leases under which it leases its branch offices, corporate headquarters, other offices, and data facility centers. Operating lease costs totaled $3.9 million and $10.9 million during the three and nine months ended September 30, 2020, respectively, compared to $3.2 million and $9.5 million for the three and nine months ended September 30, 2019, respectively. Other lease costs, which include common area maintenance, parking, and taxes, and were included as part of occupancy expense, totaled $1.0 million and $2.9 million during the three and nine months ended September 30, 2020, respectively, compared to $1.0 million and $3.0 million for the three and nine months ended September 30, 2019, respectively.

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12. FAIR VALUE ACCOUNTING

The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach, and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC 825 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under ASC 825 are described in "Note 1. Summary of Significant Accounting Policies" of these Notes to Unaudited Consolidated Financial Statements.

In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally-developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the Company’s creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below.

Under ASC 825, the Company elected the FVO treatment for junior subordinated debt issued by WAL. This election is irrevocable and results in the recognition of unrealized gains and losses on these items at each reporting date. These unrealized gains and losses are recognized as part of other comprehensive income rather than earnings. The Company did not elect FVO treatment for the junior subordinated debt assumed in the Bridge Capital Holdings acquisition.

For the three and nine months ended September 30, 2020 and 2019, unrealized gains and losses from fair value changes on junior subordinated debt were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Unrealized (losses)/gains	$	(3,555)	$	794	$	1,156	$	(8,837)
Changes included in OCI, net of tax	(2,681)		598		871		(6,664)

Fair value on a recurring basis

Financial assets and financial liabilities measured at fair value on a recurring basis include the following:

AFS securities: Securities classified as AFS are reported at fair value utilizing Level 1 and Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include quoted prices in active markets, dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the bond’s terms and conditions, among other things.

Equity securities: Preferred stock and CRA investments are reported at fair value primarily utilizing Level 1 inputs.

Independent pricing service: The Company's independent pricing service provides pricing information on the majority of the Company's Level 1 and Level 2 AFS securities. For a small subset of securities, other pricing sources are used, including observed prices on publicly traded securities and dealer quotes. Management independently evaluates the fair value measurements received from the Company's third-party pricing service through multiple review steps. First, management reviews what has transpired in the marketplace with respect to interest rates, credit spreads, volatility, and mortgage rates, among other things, and develops an expectation of changes to the securities' valuations from the previous quarter. Then, management selects a sample of investment securities and compares the values provided by its primary third-party pricing service to the market values obtained from secondary sources, including other pricing services and safekeeping statements, and

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evaluates those with notable variances.  In instances where there are discrepancies in pricing from various sources and management expectations, management may manually price securities using currently observed market data to determine whether they can develop similar prices or may utilize bid information from broker dealers. Any remaining discrepancies between management’s review and the prices provided by the vendor are discussed with the vendor and/or the Company’s other valuation advisors.

Interest rate swaps: Interest rate swaps are reported at fair value utilizing Level 2 inputs. The Company obtains dealer quotations to value its interest rate swaps.

Junior subordinated debt: The Company estimates the fair value of its junior subordinated debt using a discounted cash flow model which incorporates the effect of the Company’s own credit risk in the fair value of the liabilities (Level 3). The Company’s cash flow assumptions are based on contractual cash flows as the Company anticipates that it will pay the debt according to its contractual terms.

The fair value of assets and liabilities measured at fair value on a recurring basis was determined using the following inputs as of the periods presented: 

	Fair Value Measurements at the End of the Reporting Period Using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
	(in thousands)
September 30, 2020
Assets:
Available-for-sale debt securities
CDO	$	—	$	8,176	$	—	$	8,176
Commercial MBS issued by GSEs	—		95,657		—		95,657
Corporate debt securities	—		186,609		—		186,609
Municipal securities	—		22,159		—		22,159
Private label residential MBS	—		1,264,237		—		1,264,237
Residential MBS issued by GSEs	—		1,361,556		—		1,361,556
Tax-exempt	—		1,011,023		—		1,011,023
Trust preferred securities	25,208		—		—		25,208
U.S. treasury securities	—		600		—		600
Total AFS debt securities	$	25,208	$	3,950,017	$	—	$	3,975,225
Equity securities
CRA investments	$	27,795	$	25,750	$	—	$	53,545
Preferred stock	107,016		—		—		107,016
Total equity securities	$	134,811	$	25,750	$	—	$	160,561
Loans - HFS	$	—	$	20,764	$	—	$	20,764
Derivative assets (1)	—		4,119		—		4,119
Liabilities:
Junior subordinated debt (2)	$	—	$	—	$	60,529	$	60,529
Derivative liabilities (1)	—		92,995		—		92,995

(1)Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $92,352 and the net carrying value of subordinated debt is increased by $3,417 as of September 30, 2020 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

53

	Fair Value Measurements at the End of the Reporting Period Using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
	(in thousands)
December 31, 2019
Assets:
Available-for-sale debt securities
CDO	$	—	$	10,142	$	—	$	10,142
Commercial MBS issued by GSEs	—		94,253		—		94,253
Corporate debt securities	5,127		94,834		—		99,961
Municipal securities	—		7,773		—		7,773
Private label residential MBS	—		1,129,227		—		1,129,227
Residential MBS issued by GSEs	—		1,412,060		—		1,412,060
Tax-exempt	—		554,855		—		554,855
Trust preferred securities	27,040		—		—		27,040
U.S. government sponsored agency securities	—		10,000		—		10,000
U.S. treasury securities	—		999		—		999
Total AFS debt securities	$	32,167	$	3,314,143	$	—	$	3,346,310
Equity securities
CRA investments	$	52,504	$	—	$	—	$	52,504
Preferred stock	86,197		—		—		86,197
Total equity securities	$	138,701	$	—	$	—	$	138,701
Loans - HFS	$	—	$	21,803	$	—	$	21,803
Derivative assets (1)	—		1,903		—		1,903
Liabilities:
Junior subordinated debt (2)	$	—	$	—	$	61,685	$	61,685
Derivative liabilities (1)	—		55,570		—		55,570

(1)Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $53,292 and the net carrying value of subordinated debt is decreased by $401 as of December 31, 2019 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

For the three and nine months ended September 30, 2020 and 2019, the change in Level 3 liabilities measured at fair value on a recurring basis was as follows:

	Junior Subordinated Debt
	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Beginning balance	$	(56,974)	$	(58,315)	$	(61,685)	$	(48,684)
Change in fair value (1)	(3,555)		794		1,156		(8,837)
Ending balance	$	(60,529)	$	(57,521)	$	(60,529)	$	(57,521)

(1)Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded as part of OCI, net of tax, and totaled $(2.7) million and $0.6 million for three months ended September 30, 2020 and 2019, respectively, and $0.9 million and $(6.7) million for the nine months ended September 30, 2020 and 2019, respectively.

54

For Level 3 liabilities measured at fair value on a recurring basis as of September 30, 2020 and December 31, 2019, the significant unobservable inputs used in the fair value measurements were as follows:

	September 30, 2020		Valuation Technique	Significant Unobservable Inputs	Input Value
	(in thousands)
Junior subordinated debt	$	60,529	Discounted cash flow	Implied credit rating of the Company	3.65	%

	December 31, 2019		Valuation Technique	Significant Unobservable Inputs	Input Value
	(in thousands)
Junior subordinated debt	$	61,685	Discounted cash flow	Implied credit rating of the Company	5.09	%

The significant unobservable inputs used in the fair value measurement of the Company’s junior subordinated debt as of September 30, 2020 and December 31, 2019 was the implied credit risk for the Company. As of September 30, 2020, the implied credit risk spread was calculated as the difference between the average of the 15-year 'BB' and 'BBB' rated financial indexes over the corresponding swap index. As of December 31, 2019, the implied credit risk spread was calculated as the difference between the 15-year 'BB' rated financial index over the corresponding swap index.

As of September 30, 2020, the Company estimates the discount rate at 3.65%, which represents an implied credit spread of 3.42% plus three-month LIBOR (0.23%). As of December 31, 2019, the Company estimated the discount rate at 5.09%, which was a 3.18% credit spread plus three-month LIBOR (1.91%).

55

Fair value on a nonrecurring basis

Certain assets are measured at fair value on a nonrecurring basis. That is, the assets are not measured at fair value on an ongoing basis, but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of credit deterioration). The following table presents such assets carried on the Consolidated Balance Sheet by caption and by level within the ASC 825 hierarchy:

	Fair Value Measurements at the End of the Reporting Period Using
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Active Markets for Similar Assets (Level 2)		Unobservable Inputs (Level 3)
	(in thousands)
As of September 30, 2020:
Loans	$	245,219	$	—	$	—	$	245,219
Other assets acquired through foreclosure	8,591		—		—		8,591
As of December 31, 2019:
Loans	$	110,272	$	—	$	—	$	110,272
Other assets acquired through foreclosure	13,850		—		—		13,850

For Level 3 assets measured at fair value on a nonrecurring basis as of September 30, 2020 and December 31, 2019, the significant unobservable inputs used in the fair value measurements were as follows:

	September 30, 2020		Valuation Technique(s)		Significant Unobservable Inputs	Range
	(in thousands)
Loans	$	245,219	Collateral method	Third party appraisal	Costs to sell	4.0% to 10.0%
			Discounted cash flow method	Discount rate	Contractual loan rate	4.0% to 7.0%
Other assets acquired through foreclosure	8,591		Collateral method	Third party appraisal	Costs to sell	4.0% to 10.0%

	December 31, 2019		Valuation Technique(s)		Significant Unobservable Inputs	Range
	(in thousands)
Loans	$	110,272	Collateral method	Third party appraisal	Costs to sell	4.0% to 10.0%
			Discounted cash flow method	Discount rate	Contractual loan rate	4.0% to 7.0%
				Scheduled cash collections	Probability of default	0% to 20.0%
				Proceeds from non-real estate collateral	Loss given default	0% to 70.0%
Other assets acquired through foreclosure	13,850		Collateral method	Third party appraisal	Costs to sell	4.0% to 10.0%

Loans: Loans measured at fair value on a nonrecurring basis include collateral dependent loans held for investment. The specific reserves for these loans are based on collateral value, net of estimated disposition costs and other identified quantitative inputs. Collateral value is determined based on independent third-party appraisals or internally-developed discounted cash flow analyses. Appraisals may utilize a single valuation approach or a combination of approaches, including comparable sales and the income approach. Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. In addition, when adjustments are made to an appraised value to reflect various factors such as the age of the appraisal or known changes in the market or the collateral, such valuation inputs are considered unobservable and the fair value measurement is categorized as a Level 3 measurement. Internal discounted cash flow analyses are also utilized to estimate the fair value of these loans, which considers internally-developed, unobservable inputs such as discount rates, default rates, and loss severity.

Total Level 3 collateral dependent loans had an estimated fair value of $245.2 million and $110.3 million at September 30, 2020 and December 31, 2019, respectively, net of a specific valuation allowance of $9.6 million and $2.8 million at September 30, 2020 and December 31, 2019, respectively.

56

Other assets acquired through foreclosure: Other assets acquired through foreclosure consist of properties acquired as a result of, or in-lieu-of, foreclosure. These assets are initially reported at the fair value determined by independent appraisals using appraised value less estimated cost to sell. Such properties are generally re-appraised every twelve months. There is risk for subsequent volatility. Costs relating to the development or improvement of the assets are capitalized and costs relating to holding the assets are charged to expense.

Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. When significant adjustments are based on unobservable inputs, such as when a current appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, the resulting fair value measurement has been categorized as a Level 3 measurement. The Company had $8.6 million and $13.9 million of such assets at September 30, 2020 and December 31, 2019, respectively.

Fair Value of Financial Instruments

The estimated fair value of the Company’s financial instruments is as follows:

	September 30, 2020
	Carrying Amount		Fair Value
			Level 1		Level 2		Level 3		Total
	(in thousands)
Financial assets:
Investment securities:
HTM	$	504,477	$	—	$	548,140	$	—	$	548,140
AFS	3,975,225		25,208		3,950,017		—		3,975,225
Equity	160,561		134,811		25,750		—		160,561
Derivative assets	4,119		—		4,119		—		4,119
Loans, net	25,703,458		—		—		26,107,177		26,107,177
Accrued interest receivable	140,827		—		140,827		—		140,827
Financial liabilities:
Deposits	$	28,843,396	$	—	$	28,850,576	$	—	$	28,850,576
Customer repurchase agreements	19,688		—		19,688		—		19,688
Qualifying debt	618,772		—		566,308		72,628		638,936
Derivative liabilities	92,995		—		92,995		—		92,995
Accrued interest payable	15,666		—		15,666		—		15,666

	December 31, 2019
	Carrying Amount		Fair Value
			Level 1		Level 2		Level 3		Total
	(in thousands)
Financial assets:
Investment securities:
HTM	$	485,107	$	—	$	516,261	$	—	$	516,261
AFS	3,346,310		32,167		3,314,143		—		3,346,310
Equity securities	138,701		138,701		—		—		138,701
Derivative assets	1,903		—		1,903		—		1,903
Loans, net	20,955,499		—		—		21,256,462		21,256,462
Accrued interest receivable	108,694		—		108,694		—		108,694
Financial liabilities:
Deposits	$	22,796,493	$	—	$	22,813,265	$	—	$	22,813,265
Customer repurchase agreements	16,675		—		16,675		—		16,675
Qualifying debt	393,563		—		332,635		74,155		406,790
Derivative liabilities	55,570		—		55,570		—		55,570
Accrued interest payable	24,661		—		24,661		—		24,661

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Interest rate risk

The Company assumes interest rate risk (the risk to the Company’s earnings and capital from changes in interest rate levels) as a result of its normal operations. As a result, the fair values of the Company’s financial instruments, as well as its future net interest income, will change when interest rate levels change and that change may be either favorable or unfavorable to the Company.

Interest rate risk exposure is measured using interest rate sensitivity analysis to determine the Company's change in EVE and net interest income resulting from hypothetical changes in interest rates. If potential changes to EVE and net interest income resulting from hypothetical interest rate changes are not within the limits established by the BOD, the BOD may direct management to adjust the asset and liability mix to bring interest rate risk within BOD-approved limits.

WAB has an ALCO charged with managing interest rate risk within the BOD-approved limits. Limits are structured to preclude an interest rate risk profile that does not conform to both management and BOD risk tolerances without ALCO approval. There is also ALCO reporting at the Parent level for reviewing interest rate risk for the Company, which gets reported to the BOD and its Finance and Investment Committee.

Fair value of commitments

The estimated fair value of standby letters of credit outstanding at September 30, 2020 and December 31, 2019 approximates zero as there have been no significant changes in borrower creditworthiness. Loan commitments on which the committed interest rates are less than the current market rate are insignificant at September 30, 2020 and December 31, 2019.

58

13. SEGMENTS

The Company's reportable segments are aggregated based primarily on geographic location, services offered, and markets served. The Company's regional segments, which include Arizona, Nevada, Southern California, and Northern California, provide full service banking and related services to their respective markets. The operations from the regional segments correspond to the following banking divisions: ABA in Arizona, BON and FIB in Nevada, TPB in Southern California, and Bridge in Northern California.

The Company's NBL segments provide specialized banking services to niche markets. The Company's NBL reportable segments include HOA Services, Public & Nonprofit Finance, Technology & Innovation, HFF, and Other NBLs. These NBLs are managed centrally and are broader in geographic scope than the Company's other segments, though still predominately located within the Company's core market areas.

The Corporate & Other segment consists of corporate-related items, income and expense items not allocated to the Company's other reportable segments, and inter-segment eliminations.

The Company's segment reporting process begins with the assignment of all loan and deposit accounts directly to the segments where these products are originated and/or serviced. Equity capital is assigned to each segment based on the risk profile of their assets and liabilities. With the exception of goodwill, which is assigned a 100% weighting, equity capital allocations ranged from 0% to 12% during the year, with a funds credit provided for the use of this equity as a funding source. Any excess or deficient equity not allocated to segments based on risk is assigned to the Corporate & Other segment.

Net interest income, provision for credit losses, and non-interest expense amounts are recorded in their respective segment to the extent that the amounts are directly attributable to those segments. Net interest income is recorded in each segment on a TEB with a corresponding increase in income tax expense, which is eliminated in the Corporate & Other segment.

Further, net interest income of a reportable segment includes a funds transfer pricing process that matches assets and liabilities with similar interest rate sensitivity and maturity characteristics. Using this funds transfer pricing methodology, liquidity is transferred between users and providers. A net user of funds has lending/investing in excess of deposits/borrowings and a net provider of funds has deposits/borrowings in excess of lending/investing. A segment that is a user of funds is charged for the use of funds, while a provider of funds is credited through funds transfer pricing, which is determined based on the average life of the assets or liabilities in the portfolio. Residual funds transfer pricing mismatches are allocable to the Corporate & Other segment and presented as part of net interest income.

The net income amount for each reportable segment is further derived by the use of expense allocations. Certain expenses not directly attributable to a specific segment are allocated across all segments based on key metrics, such as number of employees, average loan balances, and average deposit balances. These types of expenses include information technology, operations, human resources, finance, risk management, credit administration, legal, and marketing.

Income taxes are applied to each segment based on the effective tax rate for the geographic location of the segment. Any difference in the corporate tax rate and the aggregate effective tax rates in the segments are adjusted in the Corporate & Other segment.

59

The following is a summary of operating segment information for the periods indicated:

			Regional Segments
Balance Sheet:	Consolidated Company		Arizona		Nevada		Southern California		Northern California
At September 30, 2020	(in millions)
Assets:
Cash, cash equivalents, and investment securities	$	6,119.8	$	1.5	$	8.8	$	1.8	$	2.3
Loans, net of deferred loan fees and costs	26,014.0		4,388.1		2,612.2		2,376.7		1,785.8
Less: allowance for credit losses	(310.5)		(57.0)		(36.4)		(31.5)		(19.3)
Total loans	25,703.5		4,331.1		2,575.8		2,345.2		1,766.5
Other assets acquired through foreclosure, net	8.6		—		8.5		—		—
Goodwill and other intangible assets, net	299.0		—		23.2		—		153.9
Other assets	1,204.6		47.8		60.1		16.2		20.1
Total assets	$	33,335.5	$	4,380.4	$	2,676.4	$	2,363.2	$	1,942.8
Liabilities:
Deposits	$	28,843.4	$	8,541.5	$	4,733.9	$	3,502.0	$	2,741.1
Borrowings and qualifying debt	628.8		—		—		—		—
Other liabilities	639.3		28.7		18.8		8.6		20.0
Total liabilities	30,111.5		8,570.2		4,752.7		3,510.6		2,761.1
Allocated equity:	3,224.0		576.4		343.7		281.2		361.5
Total liabilities and stockholders' equity	$	33,335.5	$	9,146.6	$	5,096.4	$	3,791.8	$	3,122.6
Excess funds provided (used)	—		4,766.2		2,420.0		1,428.6		1,179.8

Income Statement:
Three Months Ended September 30, 2020	(in thousands)
Net interest income	$	284,738	$	83,492	$	46,625	$	35,656	$	28,353
Provision for (recovery of) credit losses	14,661		9,830		8,548		5,213		1,856
Net interest income after provision for credit losses	270,077		73,662		38,077		30,443		26,497
Non-interest income	20,606		1,771		2,391		1,186		2,381
Non-interest expense	(124,092)		(17,644)		(15,800)		(14,020)		(12,885)
Income (loss) before income taxes	166,591		57,789		24,668		17,609		15,993
Income tax expense (benefit)	30,822		14,447		5,180		4,930		4,478
Net income	$	135,769	$	43,342	$	19,488	$	12,679	$	11,515

Nine Months Ended September 30, 2020	(in thousands)
Net interest income	$	852,158	$	229,701	$	139,328	$	104,348	$	85,345
Provision for (recovery of) credit losses	157,837		46,623		25,015		23,750		12,680
Net interest income after provision for credit losses	694,321		183,078		114,313		80,598		72,665
Non-interest income	46,985		4,943		7,355		3,269		6,450
Non-interest expense	(359,372)		(58,674)		(44,414)		(43,216)		(38,460)
Income (loss) before income taxes	381,934		129,347		77,254		40,651		40,655
Income tax expense (benefit)	68,929		32,207		16,164		11,241		11,340
Net income	$	313,005	$	97,140	$	61,090	$	29,410	$	29,315

60

	National Business Lines
Balance Sheet:	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
At September 30, 2020
Assets:	(in millions)
Cash, cash equivalents, and investment securities	$	—	$	—	$	—	$	—	$	26.6	$	6,078.8
Loans, net of deferred loan fees and costs	280.0		1,686.7		2,329.3		2,099.3		8,451.8		4.1
Less: allowance for credit losses	(2.3)		(17.9)		(41.5)		(40.7)		(63.9)		—
Total loans	277.7		1,668.8		2,287.8		2,058.6		8,387.9		4.1
Other assets acquired through foreclosure, net	—		—		—		—		0.1		—
Goodwill and other intangible assets, net	—		—		119.3		0.1		2.5		—
Other assets	5.4		11.9		9.2		33.4		110.3		890.2
Total assets	$	283.1	$	1,680.7	$	2,416.3	$	2,092.1	$	8,527.4	$	6,973.1
Liabilities:
Deposits	$	3,697.9	$	—	$	4,646.4	$	—	$	61.4	$	919.2
Borrowings and qualifying debt	—		—		—		—		—		628.8
Other liabilities	(2.7)		91.8		5.4		0.9		56.8		411.0
Total liabilities	3,695.2		91.8		4,651.8		0.9		118.2		1,959.0
Allocated equity:	104.9		130.3		397.5		167.5		673.2		187.8
Total liabilities and stockholders' equity	$	3,800.1	$	222.1	$	5,049.3	$	168.4	$	791.4	$	2,146.8
Excess funds provided (used)	3,517.0		(1,458.6)		2,633.0		(1,923.7)		(7,736.0)		(4,826.3)

Income Statement:
Three Months Ended September 30, 2020	(in thousands)
Net interest income	$	22,184	$	2,800	$	48,013	$	12,536	$	46,582	$	(41,503)
Provision for (recovery of) credit losses	(138)		781		(9,048)		2,200		(2,706)		(1,875)
Net interest income after provision for credit losses	22,322		2,019		57,061		10,336		49,288		(39,628)
Non-interest income	134		—		3,126		—		2,924		6,693
Non-interest expense	(9,896)		(1,724)		(11,530)		(2,596)		(12,335)		(25,662)
Income (loss) before income taxes	12,560		295		48,657		7,740		39,877		(58,597)
Income tax expense (benefit)	2,889		68		11,191		1,780		9,172		(23,313)
Net income	$	9,671	$	227	$	37,466	$	5,960	$	30,705	$	(35,284)

Nine Months Ended September 30, 2020	(in thousands)
Net interest income	$	67,740	$	6,351	$	137,436	$	39,442	$	128,096	$	(85,629)
Provision for (recovery of) credit losses	(2,198)		553		25,471		27,530		(4,737)		3,150
Net interest income after provision for credit losses	69,938		5,798		111,965		11,912		132,833		(88,779)
Non-interest income	350		—		9,247		—		4,108		11,263
Non-interest expense	(29,965)		(5,114)		(36,188)		(7,353)		(35,674)		(60,314)
Income (loss) before income taxes	40,323		684		85,024		4,559		101,267		(137,830)
Income tax expense (benefit)	9,361		380		19,461		893		23,083		(55,201)
Net income	$	30,962	$	304	$	65,563	$	3,666	$	78,184	$	(82,629)

61

			Regional Segments
Balance Sheet:	Consolidated Company		Arizona		Nevada		Southern California		Northern California
At December 31, 2019	(in millions)
Assets:
Cash, cash equivalents, and investment securities	$	4,471.2	$	1.8	$	9.0	$	2.3	$	2.2
Loans, net of deferred loan fees and costs	21,123.3		3,847.9		2,252.5		2,253.9		1,311.2
Less: allowance for credit losses	(167.8)		(31.6)		(18.0)		(18.3)		(9.7)
Total loans	20,955.5		3,816.3		2,234.5		2,235.6		1,301.5
Other assets acquired through foreclosure, net	13.9		—		13.0		0.9		—
Goodwill and other intangible assets, net	297.6		—		23.2		—		154.6
Other assets	1,083.7		48.6		59.4		15.0		19.8
Total assets	$	26,821.9	$	3,866.7	$	2,339.1	$	2,253.8	$	1,478.1
Liabilities:
Deposits	$	22,796.5	$	5,384.7	$	4,350.1	$	2,585.3	$	2,373.6
Borrowings and qualifying debt	393.6		—		—		—		—
Other liabilities	615.1		17.8		11.9		1.2		15.9
Total liabilities	23,805.2		5,402.5		4,362.0		2,586.5		2,389.5
Allocated equity:	3,016.7		453.6		301.0		253.3		312.5
Total liabilities and stockholders' equity	$	26,821.9	$	5,856.1	$	4,663.0	$	2,839.8	$	2,702.0
Excess funds provided (used)	—		1,989.4		2,323.9		586.0		1,223.9

Income Statement:
Three Months Ended September 30, 2019	(in thousands)
Net interest income	$	266,422	$	68,828	$	40,565	$	33,630	$	23,504
Provision for (recovery of) credit losses	3,803		103		(62)		(189)		218
Net interest income (expense) after provision for credit losses	262,619		68,725		40,627		33,819		23,286
Non-interest income	19,441		1,821		2,677		1,079		1,917
Non-interest expense	(126,152)		(27,241)		(15,211)		(15,185)		(12,379)
Income (loss) before income taxes	155,908		43,305		28,093		19,713		12,824
Income tax expense (benefit)	28,533		10,826		5,899		5,520		3,591
Net income	$	127,375	$	32,479	$	22,194	$	14,193	$	9,233

Nine Months Ended September 30, 2019	(in thousands)
Net interest income	$	768,439	$	183,772	$	119,191	$	95,751	$	70,533
Provision for (recovery of) credit losses	15,303		1,705		166		611		(653)
Net interest income (expense) after provision for credit losses	753,136		182,067		119,025		95,140		71,186
Non-interest income	49,069		5,050		7,926		3,054		6,299
Non-interest expense	(352,279)		(72,183)		(45,099)		(44,890)		(38,419)
Income (loss) before income taxes	449,926		114,934		81,852		53,304		39,066
Income tax expense (benefit)	78,819		28,733		17,189		14,925		10,939
Net income	$	371,107	$	86,201	$	64,663	$	38,379	$	28,127

62

	National Business Lines
Balance Sheet:	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
At December 31, 2019
Assets:	(in millions)
Cash, cash equivalents, and investment securities	$	—	$	—	$	—	$	—	$	10.1	$	4,445.8
Loans, net of deferred loan fees and costs	237.2		1,635.6		1,552.0		1,930.8		6,098.7		3.5
Less: allowance for credit losses	(2.0)		(13.7)		(12.6)		(12.6)		(49.3)		—
Total loans	235.2		1,621.9		1,539.4		1,918.2		6,049.4		3.5
Other assets acquired through foreclosure, net	—		—		—		—		—		—
Goodwill and other intangible assets, net	—		—		119.7		0.1		—		—
Other assets	1.2		18.3		7.3		8.8		64.3		841.0
Total assets	$	236.4	$	1,640.2	$	1,666.4	$	1,927.1	$	6,123.8	$	5,290.3
Liabilities:
Deposits	$	3,210.1	$	0.1	$	3,771.5	$	—	$	36.9	$	1,084.2
Borrowings and qualifying debt	—		—		—		—		—		393.6
Other liabilities	1.8		52.9		0.1		—		2.8		510.7
Total liabilities	3,211.9		53.0		3,771.6		—		39.7		1,988.5
Allocated equity:	84.5		131.6		317.5		158.5		494.3		509.9
Total liabilities and stockholders' equity	$	3,296.4	$	184.6	$	4,089.1	$	158.5	$	534.0	$	2,498.4
Excess funds provided (used)	3,060.0		(1,455.6)		2,422.7		(1,768.6)		(5,589.8)		(2,791.9)

Income Statement:
Three Months Ended September 30, 2019	(in thousands)
Net interest income (expense)	$	21,974	$	3,394	$	33,932	$	12,845	$	32,935	$	(5,185)
Provision for (recovery of) credit losses	60		(191)		895		1,956		1,210		(197)
Net interest income (expense) after provision for credit losses	21,914		3,585		33,037		10,889		31,725		(4,988)
Non-interest income	84		—		5,422		—		1,708		4,733
Non-interest expense	(9,769)		(1,845)		(12,068)		(2,197)		(11,320)		(18,937)
Income (loss) before income taxes	12,229		1,740		26,391		8,692		22,113		(19,192)
Income tax expense (benefit)	2,813		400		6,070		1,999		5,086		(13,671)
Net income	$	9,416	$	1,340	$	20,321	$	6,693	$	17,027	$	(5,521)

Nine Months Ended September 30, 2019	(in thousands)
Net interest income	$	64,520	$	10,278	$	91,871	$	39,279	$	88,212	$	5,032
Provision for (recovery of) credit losses	27		(136)		2,635		3,587		6,558		803
Net interest income (expense) after provision for credit losses	64,493		10,414		89,236		35,692		81,654		4,229
Non-interest income	268		—		10,946		—		3,915		11,611
Non-interest expense	(27,777)		(5,683)		(33,971)		(6,757)		(31,729)		(45,771)
Income (loss) before income taxes	36,984		4,731		66,211		28,935		53,840		(29,931)
Income tax expense (benefit)	8,506		1,088		15,229		6,655		12,383		(36,828)
Net income	$	28,478	$	3,643	$	50,982	$	22,280	$	41,457	$	6,897

63

14. REVENUE FROM CONTRACTS WITH CUSTOMERS

ASC 606, Revenue from Contracts with Customers, requires revenue to be recognized at an amount that reflects the consideration to which the entity expects to be entitled in exchange for transferring goods or services to a customer. ASC 606 applies to all contracts with customers to provide goods or services in the ordinary course of business, except for contracts that are specifically excluded from its scope. The majority of the Company’s revenue streams including interest income, credit and debit card fees, income from equity investments including warrants and SBIC equity income, income from bank owned life insurance, foreign currency income, lending related income, and gains and losses on sales of investment securities are outside the scope of ASC 606. Revenue streams including service charges and fees, interchange fees on credit and debit cards, and success fees are within the scope of ASC 606.

Disaggregation of Revenue

The following table represents a disaggregation of revenue from contracts with customers for the periods indicated along with the reportable segment for each revenue category:

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Three Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	5,913	$	1,188	$	1,826	$	889	$	930
Debit and credit card interchange (1)	1,597		426		306		167		686
Success fees (2)	38		—		—		—		—
Other income	69		8		6		(1)		18
Total revenue from contracts with customers	$	7,617	$	1,622	$	2,138	$	1,055	$	1,634
Revenues outside the scope of ASC 606 (3)	12,989		149		253		131		747
Total non-interest income	$	20,606	$	1,771	$	2,391	$	1,186	$	2,381

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Nine Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	17,447	$	3,525	$	5,572	$	2,466	$	2,863
Debit and credit card interchange (1)	3,942		990		770		401		1,754
Success fees (2)	423		—		—		—		144
Other income	231		20		15		(6)		59
Total revenue from contracts with customers	$	22,043	$	4,535	$	6,357	$	2,861	$	4,820
Revenues outside the scope of ASC 606 (3)	24,942		408		998		408		1,630
Total non-interest income	$	46,985	$	4,943	$	7,355	$	3,269	$	6,450

(1)Included as part of Card income in the Consolidated Income Statement.

(2)Included as part of Income from equity investments in the Consolidated Income Statement.

(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

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	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Three Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	114	$	—	$	963	$	—	$	3	$	—
Debit and credit card interchange (1)	12		—		—		—		—		—
Success fees (2)	—		—		38		—		—		—
Other income	2		—		—		—		35		1
Total revenue from contracts with customers	$	128	$	—	$	1,001	$	—	$	38	$	1
Revenues outside the scope of ASC 606 (3)	6		—		2,125		—		2,886		6,692
Total non-interest income	$	134	$	—	$	3,126	$	—	$	2,924	$	6,693

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Nine Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	308	$	—	$	2,707	$	—	$	6	$	—
Debit and credit card interchange (1)	27		—		—		—		—		—
Success fees (2)	—		—		279		—		—		—
Other income	4		—		—		—		125		14
Total revenue from contracts with customers	$	339	$	—	$	2,986	$	—	$	131	$	14
Revenues outside the scope of ASC 606 (3)	11		—		6,261		—		3,977		11,249
Total non-interest income	$	350	$	—	$	9,247	$	—	$	4,108	$	11,263

(1)Included as part of Card income in the Consolidated Income Statement.

(2)Included as part of Income from equity investments in the Consolidated Income Statement.

(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

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			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Three Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	5,888	$	1,226	$	2,036	$	770	$	965
Debit and credit card interchange (1)	1,977		451		440		229		845
Success fees (2)	605		—		—		—		—
Other income	80		8		14		4		19
Total revenue from contracts with customers	$	8,550	$	1,685	$	2,490	$	1,003	$	1,829
Revenues outside the scope of ASC 606 (3)	10,891		136		187		76		88
Total non-interest income	$	19,441	$	1,821	$	2,677	$	1,079	$	1,917

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Nine Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	17,121	$	3,525	$	5,980	$	2,218	$	2,821
Debit and credit card interchange (1)	5,830		1,125		1,200		596		2,878
Success fees (2)	1,125		—		—		—		—
Other income	187		8		8		6		43
Total revenue from contracts with customers	$	24,263	$	4,658	$	7,188	$	2,820	$	5,742
Revenues outside the scope of ASC 606 (3)	24,806		392		738		234		557
Total non-interest income	$	49,069	$	5,050	$	7,926	$	3,054	$	6,299

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Three Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	77	$	—	$	813	$	—	$	1	$	—
Debit and credit card interchange (1)	12		—		—		—		—		—
Success fees (2)	—		—		605		—		—		—
Other income	(3)		—		—		—		35		3
Total revenue from contracts with customers	$	86	$	—	$	1,418	$	—	$	36	$	3
Revenues outside the scope of ASC 606 (3)	(2)		—		4,004		—		1,672		4,730
Total non-interest income	$	84	$	—	$	5,422	$	—	$	1,708	$	4,733

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Nine Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	241	$	—	$	2,333	$	—	$	3	$	—
Debit and credit card interchange (1)	31		—		—		—		—		—
Success fees (2)	—		—		1,125		—		—		—
Other income	2		—		4		—		109		7
Total revenue from contracts with customers	$	274	$	—	$	3,462	$	—	$	112	$	7
Revenues outside the scope of ASC 606 (3)	(6)		—		7,484		—		3,803		11,604
Total non-interest income	$	268	$	—	$	10,946	$	—	$	3,915	$	11,611

(1)Included as part of Card income in the Consolidated Income Statement.

(2)Included as part of Income from equity investments in the Consolidated Income Statement.

(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

66

Performance Obligations

Many of the services the Company performs for its customers are ongoing, and either party may cancel at any time. The fees for these contracts are dependent upon various underlying factors, such as customer deposit balances, and as such may be considered variable. The Company’s performance obligations for these services are satisfied as the services are rendered and payment is collected on a monthly, quarterly, or semi-annual basis. Other contracts with customers are for services to be provided at a point in time, and fees are recognized at the time such services are rendered. The Company had no material unsatisfied performance obligations as of September 30, 2020. The revenue streams within the scope of ASC 606 are described in further detail below.

Service Charges and Fees

The Company performs deposit account services for its customers, which include analysis and treasury management services, use of safe deposit boxes, check upcharges, and other ancillary services. The depository arrangements the Company holds with its customers are considered day-to-day contracts with ongoing renewals and optional purchases, and as such, the contract duration does not extend beyond the services performed. Due to the short-term nature of such contracts, the Company generally recognizes revenue for deposit related fees as services are rendered. From time to time, the Company may waive certain fees for its customers. The Company considers historical experience when recognizing revenue from contracts with customers, and may reduce the transaction price to account for fee waivers or refunds.

Debit and Credit Card Interchange

When a credit or debit card issued by the Company is used to purchase goods or services from a merchant, the Company earns an interchange fee. The Company considers the merchant its customer in these transactions as the Company provides the merchant with the service of enabling the cardholder to purchase the merchant’s goods or services with increased convenience, and it enables the merchants to transact with a class of customer that may not have access to sufficient funds at the time of purchase. The Company acts as an agent to the payment network by providing nightly settlement services between the network and the merchant. This transmission of data and funds represents the Company’s performance obligation and is performed nightly. As the payment network is in direct control of setting the rates and the Company is acting as an agent, the interchange fee is recorded net of expenses as the services are provided.

Success Fees

Success fees are one-time fees detailed as part of certain loan agreements and are earned immediately upon occurrence of a triggering event. Examples of triggering events include: a borrower obtaining its next round of funding, an acquisition, or completion of a public offering. Success fees are variable consideration as the transaction price can vary and is contingent on the occurrence or non-occurrence of a future event. As the consideration is highly susceptible to factors outside of the Company’s influence and uncertainty about the amount of consideration is not expected to be resolved for an extended period of time, the variable consideration is constrained and is not recognized until the achievement of the triggering event.

Principal versus Agent Considerations

When more than one party is involved in providing goods or services to a customer, ASC 606 requires the Company to determine whether it is the principal or an agent in these transactions by evaluating the nature of its promise to the customer. An entity is a principal and therefore records revenue on a gross basis, if it controls a promised good or service before transferring that good or service to the customer. An entity is an agent and records as revenue the net amount it retains for its agency services if its role is to arrange for another entity to provide the goods or services. The Company most commonly acts as a principal and records revenue on a gross basis, except in certain circumstances. As an example, revenues earned from interchange fees, in which the Company acts as an agent, are recorded as non-interest income, net of the related expenses paid to the principal.

Contract Balances

The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. The Company records contract liabilities, or deferred revenue, when payments from customers are received or due in advance of providing services to customers. The Company generally receives payments for its services during the period or at the time services are provided, therefore, does not have material contract liability balances at period-end. The Company records contract assets or receivables when revenue is recognized prior to receipt of cash from the customer. Accounts receivable totals $1.5 million and $1.6 million at each of the periods ended September 30, 2020 and December 31, 2019, respectively, and are presented in Other assets on the Consolidated Balance Sheets.

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Item 2.Management's Discussion and Analysis of Financial Condition and Results of Operations.

This discussion is designed to provide insight into management's assessment of significant trends related to the Company's consolidated financial condition, results of operations, liquidity, capital resources, and interest rate sensitivity. This Quarterly Report on Form 10-Q should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2019 and the interim Unaudited Consolidated Financial Statements and Notes to Unaudited Consolidated Financial Statements hereto and financial information appearing elsewhere in this report. Unless the context requires otherwise, the terms "Company," "we," and "our" refer to Western Alliance Bancorporation and its wholly-owned subsidiaries on a consolidated basis.

Forward-Looking Information

Certain statements contained in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2020 are “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Exchange Act. The Company intends such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements. All statements other than statements of historical fact are “forward-looking statements” for purposes of federal and state securities laws, including statements that are related to or are dependent on estimates or assumptions relating to expectations, beliefs, projections, future plans and strategies, anticipated events or trends, and similar expressions concerning matters that are not historical facts.

The forward-looking statements contained in this Form 10-Q reflect the Company's current views about future events and financial performance and involve certain risks, uncertainties, assumptions, and changes in circumstances that may cause the Company's actual results to differ significantly from historical results and those expressed in any forward-looking statement, including those risks discussed under the heading “Risk Factors” in this Form 10-Q. Risks and uncertainties include those set forth in the Company's filings with the SEC and the following factors that could cause actual results to differ materially from those presented: 1) the potential adverse effects of the ongoing COVID-19 pandemic and any governmental or societal responses thereto, including legislative or regulatory changes such as the CARES Act; 2) other financial market and economic conditions adversely effecting financial performance; 3) dependency on real estate and events that negatively impact the real estate market; 4) high concentration of commercial real estate and commercial and industrial loans; 5) actual credit losses may exceed expected losses in the loan portfolio; 6) recent changes to FASB accounting standards, including the impact to the Company's allowance and provision for credit losses and capital levels under the new CECL accounting standard; 7) results of any tax audit findings, challenges to the Company's tax positions, or adverse changes or interpretations of tax laws; 8) the geographic concentrations of the Company's assets increase the risks related to local economic conditions; 9) exposure of financial instruments to certain market risks may increase the volatility of earnings and AOCI; 10) dependence on low-cost deposits; 11) ability to borrow from the FHLB or the FRB; 12) perpetration of fraud; 13) information security breaches; 14) reliance on third parties to provide key components of the Company's infrastructure; 15) a change in the Company's creditworthiness; 16) the Company's ability to implement and improve its controls and processes to keep pace with its growth; 17) expansion strategies may not be successful; 18) risks associated with new lines of businesses or new products and services within existing lines of business; 19) the Company's ability to compete in a highly competitive market; 20) the Company's ability to recruit and retain qualified employees and implement adequate succession planning to mitigate the loss of key members of its senior management team; 21) inadequate or ineffective risk management practices and internal controls and procedures; 22) the Company's ability to adapt to technological change; 23) exposure to natural and man-made disasters in markets that the Company operates; 24) risk of operating in a highly regulated industry and the Company's ability to remain in compliance; 25) failure to comply with state and federal banking agency laws and regulations; 26) uncertainty about the future of LIBOR, changes in interest rates, and increased rate competition; 27) exposure to environmental liabilities related to the properties to which the Company acquires title; and 28) risks related to ownership and price of the Company's common stock.

For more information regarding risks that may cause the Company's actual results to differ materially from any forward-looking statements, see “Risk Factors” in Item 1A of the Company's Annual Report on Form 10-K for the year ended December 31, 2019.

68

Recent Developments: COVID-19 and the CARES Act

The ongoing COVID-19 global and national health emergency has caused significant disruption in the United States and international economies and financial markets. The spread of COVID-19 in the United States has caused illness, quarantines, cancellation of events and travel, business and school shutdowns, reduction in commercial activity and financial transactions, supply chain interruptions, increased unemployment, and overall economic and financial market instability. Many states, including Arizona, where we are headquartered, and California and Nevada, in which we have significant operations, declared states of emergency. These states, like many others, continue to be significantly impacted by the pandemic.

In response to the COVID-19 pandemic, the CARES Act was signed into law by President Trump on March 27, 2020. The CARES Act provides for approximately $2.2 trillion in emergency economic relief measures including, among other things, loan programs for small and mid-sized businesses and other economic relief for impacted businesses and industries, including financial institutions. Separately, and also in response to COVID-19, the Federal Reserve’s FOMC has set the federal funds target rate - i.e., the interest rate at which depository institutions such as the Bank lend reserve balances to other depository institutions overnight on an uncollateralized basis - to a historic low. On March 16, 2020, the FOMC set the federal funds target rate at 0 to 0.25 percent.

In addition to the general impact of the COVID-19 pandemic, certain provisions of the CARES Act and other recent legislative and regulatory relief efforts are expected to have a material impact on our operations, which are further discussed below.

Financial position and results of operations

The Company's financial position and results of operations as of and for the three and nine months ended September 30, 2020 have been significantly impacted by the COVID-19 pandemic. The worsening of forecasted economic conditions from December 31, 2019 to September 30, 2020 attributable to the pandemic contributed to the $14.7 million and $157.8 million provision for credit losses recognized during the three and nine months ended September 30, 2020, respectively, under the new CECL accounting standard adopted by the Company on January 1, 2020. While the Company has not to date experienced significant writeoffs related to the COVID-19 pandemic, the continued uncertainty regarding the severity and duration of the pandemic and related economic effects will continue to affect the Company’s estimate of its allowance for credit losses and resulting provision for credit losses. To the extent the impact of the pandemic is prolonged and economic conditions continue to worsen or persist longer than forecast, such estimates may be insufficient and may change significantly in the future. The Company’s interest income also may be negatively impacted in future periods as we continue to work with our affected borrowers to defer payments, interest and fees. Additionally, net interest margin may be reduced generally as a result of the low rate environment. These uncertainties and the economic environment will continue to affect earnings, slow growth, and may result in deterioration of asset quality in the Company's loan and investment portfolios. 

The below table details the Company's exposure to borrowers in industries generally considered to be the most impacted by the COVID-19 pandemic:

	September 30, 2020
	Business Segment(s)	Loan Balance		Percent of Total Loan Portfolio
		(dollars in millions)
Industry (1):
Hotel	HFF	$	2,099.3	8.1	%
Investor dependent	Tech & Innovation	1,335.0		5.1
Retail (2)	Regional segments	674.0		2.6
Gaming	Nevada segment	510.2		2.0
Total		$	4,618.5	17.8	%

(1)Balances capture credit exposures in the business segments that manage the significant majority of industry relationships.

(2)Consists of real estate secured loan amounts that have significant retail dependency.

While the Company has not experienced disproportionate impacts among its business segments to date, borrowers in the industries detailed in the table above could have greater sensitivity to the economic downturn with potentially longer recovery periods than other business lines.

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Lending operations and accommodations to borrowers

The CARES Act created a new guaranteed, unsecured loan program under the SBA, called the Payroll Protection Program, or the PPP, which the Bank participates in, to fund operational costs of eligible businesses, organizations and self-employed persons during the pandemic period. The SBA has used funds authorized for the PPP to guarantee 100% of the amounts loaned under the PPP by lenders to eligible small businesses, nonprofits, veterans' organizations, and tribal businesses. One of the notable features of the PPP is that borrowers are eligible for loan forgiveness if borrowers maintain their staff and payroll and if loan amounts are used to cover eligible expenses, such as payroll, mortgage interest, rents and utilities payments. These loans have a two-year term and will earn interest at a rate of 1%. The Company assisted our customers with applications for resources through the program and approved over 4,700 applications. As of September 30, 2020, the outstanding balance of loans originated under the PPP totaled $1.7 billion.

The CARES Act permits financial institutions to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 and is intended to provide interpretive guidance as to conditions that would constitute a short-term modification that would not meet the definition of a TDR. This includes the following (i) the loan modification is made between March 1, 2020 and the earlier of December 31, 2020 or 60 days after the end of the coronavirus emergency declaration, and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. The Company is applying this guidance to qualifying loan modifications. As of September 30, 2020, the Company has outstanding modifications meeting these conditions on loans with a net balance of $1.5 billion as of September 30, 2020. Further, residential mortgage loans in forbearance have a net balance of $127.3 million as of September 30, 2020.

The MSLP supports lending to small and medium-sized businesses that were in sound financial condition before the onset of the COVID-19 pandemic. The MSLP operates through five facilities: the Main Street New Loan Facility, the Main Street Priority Loan Facility, the Main Street Expanded Loan Facility, the Nonprofit Organization New Loan Facility, and the Nonprofit Organization Expanded Loan Facility. The Federal Reserve Bank of Boston maintains the legal forms and agreements for eligible borrowers and eligible lenders to participate in the MSLP, and continues to refine the MSLP’s operational infrastructure and facilities. The Bank has registered as a lender under the MSLP and continues to monitor developments related thereto.

Capital and liquidity

While the Company has sufficient capital and does not anticipate any need for additional liquidity in response to the uncertainty regarding the severity and duration of the COVID-19 pandemic, the Company has taken several actions to ensure the strength of its capital and liquidity position. These actions include issuance of $225 million in subordinated debt at our bank subsidiary in May 2020, establishing a Federal Reserve lending facility in connection with funding loans to small and medium-sized businesses, and temporarily suspending stock repurchases since mid-April. In addition, the Company is also in a position to pledge additional collateral to increase its borrowing capacity with the FRB, if necessary. Further, management has elected to take advantage of the capital relief option that delays the estimated impact on regulatory capital by up to two years, with a three-year transition period to phase out the cumulative benefit to regulatory capital provided during the two-year delay.

Asset valuation

While the Company’s stock price has experienced volatility and periodic declines in value during the pandemic, management does not consider this decline to be a triggering event that would indicate that an interim goodwill impairment test was necessary as of September 30, 2020. Continued and sustained declines in the Company's stock price and/or other credit related impacts could give rise to triggering events in the future that could result in a write-down in the value of our goodwill, which could have a material adverse impact on our results of operations.

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Our processes, controls and business continuity plan

The Company has focused first on ensuring the well-being of our people, customers, and communities. Preventive health measures were put in place, which included establishing social distancing precautions for all employees in the office and customers visiting branches, preventive cleaning at offices and branches, and elimination of business related travel. The Company has continued returning employees to the office subject to applicable health and safety procedures in accordance with guidance from the CDC and local authorities, including regular symptom checks, requiring face cloth coverings, increasing physical space between employees, monitoring the number of employees in the workplace, and requiring employees with COVID-19 related symptoms or exposure to quarantine away from the office.

The Company has also concentrated on implementing additional business continuity measures that include establishing a cross-functional COVID-19 team, monitoring potential business interruptions, making improvements to our remote working technology, and conducting regular discussions with our technology vendors. We have not experienced significant disruption to our business as we have been able to facilitate remote work for our employees and have online tools in place for our customers. We believe that we are positioned to continue these business continuity measures for the foreseeable future; however, no assurances can be provided as these circumstances may change depending on the duration of the pandemic.

Included at the end of this section are updates to the Supervision and Regulation discussion disclosed in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations," in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

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Financial Overview and Highlights

WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.

WAB operates the following full-service banking divisions: ABA, BON and FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services.

Financial Results Highlights for the Third Quarter of 2020

•Net income of $135.8 million, compared to $127.4 million for the third quarter 2019

•Diluted earnings per share of $1.36, compared to $1.24 per share for the third quarter 2019

•Total loans of $26.0 billion, up $984.6 million from June 30, 2020, and $4.9 billion from December 31, 2019

•Total deposits of $28.8 billion, up $1.3 billion from June 30, 2020, and $6.0 billion from December 31, 2019

•Net interest margin of 3.71%, compared to 4.41% in the third quarter 2019

•Net revenue of $305.3 million, an increase of 6.8%, or $19.5 million, compared to the third quarter 2019, with non-interest expense decrease of 1.6%, or $2.1 million, compared to the third quarter 2019

•PPNR of $181.3 million, up 13.5% from $159.7 million in the third quarter 20191

•Efficiency ratio of 39.7% in the third quarter 2020, compared to 43.2% in the third quarter 20191

•Nonperforming assets (nonaccrual loans and repossessed assets) increased to 0.47% of total assets, from 0.25% at September 30, 2019

•Annualized net loan charge-offs to average loans outstanding of 0.13%, compared to net loan recoveries to average loans outstanding of 0.01% for the third quarter 2019

•Tangible common equity ratio of 8.9%, compared to 10.1% at September 30, 20191

•Stockholders' equity of $3.2 billion, an increase of $121.6 million from June 30, 2020 and $207.3 million from December 31, 2019

•Book value per common share of $31.98, an increase of 12.3% from $28.48 at September 30, 2019

•Tangible book value per share, net of tax, of $29.03, an increase of $3.43 from $25.60 at September 30, 20191

The impact to the Company from these items, and others of both a positive and negative nature, are discussed in more detail below as they pertain to the Company’s overall comparative performance for the three and nine months ended September 30, 2020.

1 See Non-GAAP Financial Measures section beginning on page 74.

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As a bank holding company, management focuses on key ratios in evaluating the Company's financial condition and results of operations.

Results of Operations and Financial Condition

A summary of the Company's results of operations, financial condition, and selected metrics are included in the following tables: 

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
	(in thousands, except per share amounts)
Net income	$	135,769		$	127,375		$	313,005		$	371,107
Earnings per share - basic	1.36			1.25			3.12			3.60
Earnings per share - diluted	1.36			1.24			3.11			3.59
Return on average assets	1.66		%	1.94		%	1.38		%	2.03		%
Return on average tangible common equity (1)	18.73			19.41			14.90			19.86
Net interest margin	3.71			4.41			4.03			4.56

(1) See Non-GAAP Financial Measures section beginning on page 74.

	September 30, 2020		December 31, 2019
	(in thousands)
Total assets	$	33,335,506	$	26,821,948
Total loans, net of deferred loan fees and costs	26,014,018		21,123,296
Total deposits	28,843,396		22,796,493

Asset Quality

For all banks and bank holding companies, asset quality plays a significant role in the overall financial condition of the institution and results of operations. The Company measures asset quality in terms of nonaccrual loans as a percentage of gross loans and net charge-offs as a percentage of average loans. Net charge-offs are calculated as the difference between charged-off loans and recovery payments received on previously charged-off loans. The following table summarizes the Company's key asset quality metrics: 

	September 30, 2020			December 31, 2019
	(dollars in thousands)
Non-accrual loans (1)	$	146,472		$	55,968
Non-performing assets	212,384			98,174
Non-accrual loans to gross loans	0.56		%	0.27		%
Net charge-offs to average loans outstanding (2)	0.13			0.02

(1)Includes non-accrual HFS loans of $20.8 million and zero at September 30, 2020 and December 31, 2019, respectively.

(2)Annualized on an actual/actual basis for the three months ended September 30, 2020. Actual year-to-date for the year ended December 31, 2019.

Asset and Deposit Growth

The Company’s assets and liabilities are comprised primarily of loans and deposits. Therefore, the ability to originate new loans and attract new deposits is fundamental to the Company’s growth.

Total assets increased to $33.3 billion at September 30, 2020 from $26.8 billion at December 31, 2019. The increase in total assets of $6.5 billion, or 24.3%, relates primarily to loan growth. Total loans increased by $4.9 billion, or 23.2%, to $26.0 billion as of September 30, 2020, compared to $21.1 billion as of December 31, 2019. The increase in loans from December 31, 2019, which includes $1.7 billion in PPP loans, was driven by commercial and industrial loans of $4.3 billion, with smaller increases in construction and land development, residential real estate, and CRE, non-owner occupied loans of $348.3 million, $239.5 million, and $161.8 million, respectively. These increases were partially offset by a decrease in CRE, owner occupied loans of $103.4 million.

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Total deposits increased $6.0 billion, or 26.5%, to $28.8 billion as of September 30, 2020 from $22.8 billion as of December 31, 2019. The increase in deposits from December 31, 2019 was driven by an increase of $4.5 billion in non-interest bearing demand deposits, $1.5 billion in savings and money market accounts, and interest bearing demand deposits of $793.8 million. These increases were offset in part by a decrease in certificates of deposit of $676.1 million.

RESULTS OF OPERATIONS

The following table sets forth a summary financial overview for the comparable periods:

	Three Months Ended September 30,				Increase		Nine Months Ended September 30,				Increase
	2020		2019		(Decrease)		2020		2019		(Decrease)
	(in thousands, except per share amounts)
Consolidated Income Statement Data:
Interest income	$	304,843	$	315,608	$	(10,765)	$	930,297	$	909,624	$	20,673
Interest expense	20,105		49,186		(29,081)		78,139		141,185		(63,046)
Net interest income	284,738		266,422		18,316		852,158		768,439		83,719
Provision for credit losses	14,661		3,803		10,858		157,837		15,303		142,534
Net interest income after provision for credit losses	270,077		262,619		7,458		694,321		753,136		(58,815)
Non-interest income	20,606		19,441		1,165		46,985		49,069		(2,084)
Non-interest expense	124,092		126,152		(2,060)		359,372		352,279		7,093
Income before provision for income taxes	166,591		155,908		10,683		381,934		449,926		(67,992)
Income tax expense	30,822		28,533		2,289		68,929		78,819		(9,890)
Net income	$	135,769	$	127,375	$	8,394	$	313,005	$	371,107	$	(58,102)
Earnings per share - basic	$	1.36	$	1.25	$	0.11	$	3.12	$	3.60	$	(0.48)
Earnings per share - diluted	$	1.36	$	1.24	$	0.12	$	3.11	$	3.59	$	(0.47)

Non-GAAP Financial Measures

The following discussion and analysis contains financial information determined by methods other than those prescribed by GAAP. The Company's management uses these non-GAAP financial measures in their analysis of the Company's performance. Management believes presentation of these non-GAAP financial measures provides useful supplemental information that is essential to a complete understanding of the operating results of the Company. Since the presentation of these non-GAAP performance measures and their impact differ between companies, these non-GAAP disclosures should not be viewed as a substitute for operating results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies.

Pre-Provision Net Revenue

PPNR is defined by the Federal Reserve in SR 14-3, which requires companies subject to the rule to project PPNR over the planning horizon for each of the economic scenarios defined annually by the regulators. Banking regulations define PPNR as net interest income plus non-interest income less non-interest expense. Management believes that this is an important metric as it illustrates the underlying performance of the Company, it enables investors and others to assess the Company's ability to generate capital to cover credit losses through the credit cycle, and provides consistent reporting with a key metric used by bank regulatory agencies.

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The following table shows the components of PPNR for the three and nine months ended September 30, 2020 and 2019:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Total non-interest income	$	20,606	$	19,441	$	46,985	$	49,069
Net interest income	284,738		266,422		852,158		768,439
Net revenue	$	305,344	$	285,863	$	899,143	$	817,508
Total non-interest expense	124,092		$	126,152	359,372		352,279
Pre-provision net revenue	$	181,252	$	159,711	$	539,771	$	465,229
Less:
Provision for credit losses	14,661		3,803		157,837		15,303
Income tax expense	30,822		28,533		68,929		78,819
Net income	$	135,769	$	127,375	$	313,005	$	371,107

Efficiency Ratio

The following table shows the components used in the calculation of the efficiency ratio, which management uses as a metric for assessing cost efficiency:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
	(dollars in thousands)
Total non-interest expense	$	124,092		$	126,152		$	359,372		$	352,279
Divided by:
Total net interest income	284,738			266,422			852,158			768,439
Plus:
Tax equivalent interest adjustment	7,188			6,423			20,638			18,736
Total non-interest income	20,606			19,441			46,985			49,069
	$	312,532		$	292,286		$	919,781		$	836,244
Efficiency ratio - tax equivalent basis	39.7		%	43.2		%	39.1		%	42.1		%

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Tangible Common Equity

The following table presents financial measures related to tangible common equity. Tangible common equity represents total stockholders' equity, less identifiable intangible assets and goodwill. Management believes that tangible common equity financial measures are useful in evaluating the Company's capital strength, financial condition, and ability to manage potential losses. In addition, management believes that these measures improve comparability to other institutions that have not engaged in acquisitions that resulted in recorded goodwill and other intangible assets.

	September 30, 2020			December 31, 2019
	(dollars and shares in thousands)
Total stockholders' equity	$	3,224,046		$	3,016,748
Less: goodwill and intangible assets	298,987			297,608
Total tangible stockholders' equity	2,925,059			2,719,140
Plus: deferred tax - attributed to intangible assets	1,689			1,921
Total tangible common equity, net of tax	$	2,926,748		$	2,721,061
Total assets	$	33,335,506		$	26,821,948
Less: goodwill and intangible assets, net	298,987			297,608
Tangible assets	33,036,519			26,524,340
Plus: deferred tax - attributed to intangible assets	1,689			1,921
Total tangible assets, net of tax	$	33,038,208		$	26,526,261
Tangible common equity ratio	8.9		%	10.3		%
Common shares outstanding	100,825			102,524
Book value per share	$	31.98		$	29.42
Tangible book value per share, net of tax	29.03			26.54

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Regulatory Capital

The following table presents certain financial measures related to regulatory capital under Basel III, which includes common equity tier 1 and total capital. The FRB and other banking regulators use common equity tier 1 and total capital as a basis for assessing a bank's capital adequacy; therefore, management believes it is useful to assess financial condition and capital adequacy using this same basis. Specifically, the total capital ratio takes into consideration the risk levels of assets and off-balance sheet financial instruments. In addition, management believes that the classified assets to common equity tier 1 plus allowance measure is an important regulatory metric for assessing asset quality.

As permitted by the regulatory capital rules, the Company elected to delay the estimated impact of CECL on its regulatory capital over a five-year transition period ending December 31, 2024. As a result, capital ratios and amounts as of September 30, 2020 exclude the impact of the increased allowance for credit losses related to the adoption of ASC 326.

	September 30, 2020			December 31, 2019
	(dollars in thousands)
Common equity tier 1:
Common equity	$	3,285,991		$	3,016,748
Less:
Non-qualifying goodwill and intangibles	297,298			295,607
Disallowed deferred tax asset	165			2,243
AOCI related adjustments	74,084			21,379
Unrealized gain on changes in fair value liabilities	4,501			3,629
Common equity tier 1	$	2,909,943		$	2,693,890
Divided by: Risk-weighted assets	$	29,079,735		$	25,390,142
Common equity tier 1 ratio	10.0		%	10.6		%
Common equity tier 1	$	2,909,943		$	2,693,890
Plus: Trust preferred securities	81,500			81,500
Less:
Disallowed deferred tax asset	—			—
Unrealized gain on changes in fair value liabilities	—			—
Tier 1 capital	$	2,991,443		$	2,775,390
Divided by: Tangible average assets	$	32,190,510		$	26,110,275
Tier 1 leverage ratio	9.3		%	10.6		%
Total capital:
Tier 1 capital	$	2,991,443		$	2,775,390
Plus:
Subordinated debt	515,329			305,732
Adjusted allowances for credit losses	287,647			176,752
Less: Tier 2 qualifying capital deductions	—			—
Tier 2 capital	$	802,976		$	482,484
Total capital	$	3,794,419		$	3,257,874
Total capital ratio	13.0		%	12.8		%
Classified assets to tier 1 capital plus allowance:
Classified assets	$	325,659		$	171,246
Divided by: Tier 1 capital	2,991,443			2,775,390
Plus: Adjusted allowances for credit losses	287,647			176,752
Total Tier 1 capital plus adjusted allowances for credit losses	$	3,279,090		$	2,952,142
Classified assets to tier 1 capital plus allowance (1)	9.9		%	5.8		%

(1)Upon adoption of ASU 2016-13, Measurement of Credit Losses on Financial Instruments, the allowance for credit losses has been modified to also include amounts related to unfunded loan commitments and investment securities. Prior period amounts have been restated to conform to current presentation.

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Net Interest Margin

The net interest margin is reported on a TEB. A tax equivalent adjustment is added to reflect interest earned on certain securities and loans that are exempt from federal and state income tax. The following tables set forth the average balances, interest income, interest expense, and average yield (on a fully TEB) for the periods indicated:

	Three Months Ended September 30,
	2020						2019
	Average Balance		Interest		Average Yield / Cost		Average Balance		Interest		Average Yield / Cost
	(dollars in thousands)
Interest earning assets
Loans:
Commercial and industrial	$	12,687,865	$	130,041	4.17	%	$	8,423,017	$	118,332	5.72	%
CRE - non-owner-occupied	5,393,133		63,813		4.72		4,722,176		69,421		5.85
CRE - owner-occupied	2,232,653		26,645		4.85		2,259,576		30,099		5.38
Construction and land development	2,209,340		32,293		5.83		2,226,289		39,177		7.00
Residential real estate	2,395,956		23,358		3.88		1,701,599		20,913		4.88
Consumer	38,524		473		4.88		69,519		990		5.65
Loans held for sale	20,290		—		—		237		—		—
Total loans (1), (2), (3)	24,977,761		276,623		4.47		19,402,413		278,932		5.79
Securities:
Securities - taxable	2,811,615		14,769		2.09		3,073,116		20,575		2.66
Securities - tax-exempt	1,556,431		12,634		4.07		1,062,087		9,085		4.30
Total securities (1)	4,368,046		27,403		2.79		4,135,203		29,660		3.08
Other	1,926,386		817		0.17		1,009,926		7,016		2.76
Total interest earning assets	31,272,193		304,843		3.97		24,547,542		315,608		5.20
Non-interest earning assets
Cash and due from banks	163,812						346,833
Allowance for credit losses	(325,039)						(162,629)
Bank owned life insurance	174,998						172,447
Other assets	1,237,441						1,094,205
Total assets	$	32,523,405					$	25,998,398
Interest-bearing liabilities
Interest-bearing deposits:
Interest-bearing transaction accounts	$	3,636,299	$	1,463	0.16	%	$	2,488,581	$	5,061	0.81	%
Savings and money market accounts	10,170,085		5,661		0.22		8,456,531		26,608		1.25
Certificates of deposit	1,845,479		5,091		1.10		2,250,362		11,685		2.06
Total interest-bearing deposits	15,651,863		12,215		0.31		13,195,474		43,354		1.30
Short-term borrowings	35,996		18		0.20		17,495		47		1.07
Qualifying debt	616,218		7,872		5.08		387,799		5,785		5.92
Total interest-bearing liabilities	16,304,077		20,105		0.49		13,600,768		49,186		1.43
Interest cost of funding earning assets					0.26						0.79
Non-interest-bearing liabilities
Non-interest-bearing demand deposits	12,422,208						8,916,568
Other liabilities	617,006						579,624
Stockholders’ equity	3,180,114						2,901,438
Total liabilities and stockholders' equity	$	32,523,405					$	25,998,398
Net interest income and margin (4)			$	284,738	3.71	%			$	266,422	4.41	%

(1)Yields on loans and securities have been adjusted to a TEB. The taxable-equivalent adjustment was $7.2 million and $6.4 million for the three months ended September 30, 2020 and 2019, respectively.

(2)Included in the yield computation are net loan fees of $18.2 million and $13.4 million for the three months ended September 30, 2020 and 2019, respectively.

(3)Includes non-accrual loans.

(4)Net interest margin is computed by dividing net interest income by total average earning assets, annualized on an actual/actual basis.

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	Nine Months Ended September 30,
	2020						2019
	Average Balance		Interest		Average Yield / Cost		Average Balance		Interest		Average Yield / Cost
	(dollars in thousands)
Interest earning assets
Loans:
Commercial and industrial	$	11,556,578	$	396,578	4.69	%	$	7,955,590	$	340,808	5.88	%
CRE - non-owner occupied	5,325,633		198,335		4.99		4,468,371		199,372		5.98
CRE - owner occupied	2,262,428		83,353		5.02		2,279,886		90,113		5.39
Construction and land development	2,114,957		95,451		6.05		2,210,205		118,687		7.20
Residential real estate	2,294,876		67,122		3.91		1,535,964		56,275		4.90
Consumer	49,164		1,922		5.22		64,490		2,844		5.90
Loans held for sale	21,259		324		2.04		80		—		—
Total loans (1), (2), (3)	23,624,895		843,085		4.83		18,514,586		808,099		5.92
Securities:
Securities - taxable	2,826,004		48,271		2.28		2,865,596		60,641		2.83
Securities - tax-exempt	1,376,648		34,753		4.25		979,677		27,053		4.62
Total securities (1)	4,202,652		83,024		2.93		3,845,273		87,694		3.29
Other	1,136,169		4,188		0.49		700,698		13,831		2.64
Total interest earning assets	28,963,716		930,297		4.39		23,060,557		909,624		5.38
Non-interest earning assets
Cash and due from banks	173,909						225,907
Allowance for credit losses	(263,207)						(157,809)
Bank owned life insurance	178,660						171,470
Other assets	1,206,162						1,098,583
Total assets	$	30,259,240					$	24,398,708
Interest-bearing liabilities
Interest-bearing deposits:
Interest-bearing transaction accounts	$	3,410,882	$	7,530	0.29	%	$	2,511,860	$	16,194	0.86	%
Savings and money market accounts	9,546,249		28,875		0.40		7,854,914		73,283		1.25
Certificates of deposit	2,113,020		23,331		1.47		2,114,659		31,553		1.99
Total interest-bearing deposits	15,070,151		59,736		0.53		12,481,433		121,030		1.30
Short-term borrowings	150,118		570		0.51		129,382		2,257		2.33
Qualifying debt	500,522		17,833		4.76		376,154		17,898		6.36
Total interest-bearing liabilities	15,720,791		78,139		0.66		12,986,969		141,185		1.45
Interest cost of funding earning assets					0.36						0.82
Non-interest-bearing liabilities
Non-interest-bearing demand deposits	10,813,205						8,118,791
Other liabilities	622,889						495,597
Stockholders’ equity	3,102,355						2,797,351
Total liabilities and stockholders' equity	$	30,259,240					$	24,398,708
Net interest income and margin (4)			$	852,158	4.03	%			$	768,439	4.56	%

(1)Yields on loans and securities have been adjusted to a TEB. The taxable-equivalent adjustment was $20.6 million and $18.7 million for the nine months ended September 30, 2020 and 2019, respectively.

(2)Included in the yield computation are net loan fees of $61.5 million and $37.9 million for the nine months ended September 30, 2020 and 2019, respectively.

(3)Includes non-accrual loans.

(4)Net interest margin is computed by dividing net interest income by total average earning assets, annualized on an actual/actual basis.

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	Three Months Ended September 30,						Nine Months Ended September 30,
	2020 versus 2019						2020 versus 2019
	Increase (Decrease) Due to Changes in (1)						Increase (Decrease) Due to Changes in (1)
	Volume		Rate		Total		Volume		Rate		Total
	(in thousands)
Interest income:
Loans:
Commercial and industrial	$	43,711	$	(32,002)	$	11,709	$	123,572	$	(67,802)	$	55,770
CRE - non-owner occupied	7,939		(13,547)		(5,608)		31,926		(32,963)		(1,037)
CRE - owner-occupied	(321)		(3,133)		(3,454)		(643)		(6,117)		(6,760)
Construction and land development	(248)		(6,636)		(6,884)		(4,299)		(18,937)		(23,236)
Residential real estate	6,769		(4,324)		2,445		22,197		(11,350)		10,847
Consumer	(381)		(136)		(517)		(599)		(323)		(922)
Loans held for sale	—		—		—		323		1		324
Total loans	57,469		(59,778)		(2,309)		172,477		(137,491)		34,986
Securities:
Securities - taxable	(1,374)		(4,432)		(5,806)		(676)		(11,694)		(12,370)
Securities - tax-exempt	4,013		(464)		3,549		10,021		(2,321)		7,700
Total securities	2,639		(4,896)		(2,257)		9,345		(14,015)		(4,670)
Other	389		(6,588)		(6,199)		1,605		(11,248)		(9,643)
Total interest income	60,497		(71,262)		(10,765)		183,427		(162,754)		20,673
Interest expense:
Interest-bearing transaction accounts	$	462	$	(4,060)	$	(3,598)	$	1,985	$	(10,649)	$	(8,664)
Savings and money market	954		(21,901)		(20,947)		5,116		(49,524)		(44,408)
Certificates of deposit	(1,117)		(5,477)		(6,594)		(18)		(8,204)		(8,222)
Short-term borrowings	9		(38)		(29)		79		(1,766)		(1,687)
Qualifying debt	2,918		(831)		2,087		4,431		(4,496)		(65)
Total interest expense	3,226		(32,307)		(29,081)		11,593		(74,639)		(63,046)
Net increase	$	57,271	$	(38,955)	$	18,316	$	171,834	$	(88,115)	$	83,719

(1)Changes attributable to both volume and rate are designated as volume changes.

Comparison of interest income, interest expense and net interest margin

The Company's primary source of revenue is interest income. For the three months ended September 30, 2020, interest income was $304.8 million, a decrease of $10.8 million, or 3.4%, compared to $315.6 million for the three months ended September 30, 2019. This decrease was primarily the result of a decrease in other interest income from interest bearing cash accounts and federal funds sold of $6.2 million. Also contributing to the decrease in total interest income were net declines in interest income from loans and investment securities, each totaling $2.3 million. The decline in interest rates from September 30, 2019 outweighed the increases in the related average asset balances, resulting in a decrease in total interest income.

For the nine months ended September 30, 2020, interest income was $930.3 million, an increase of $20.7 million, or 2.3%, compared to $909.6 million for the nine months ended September 30, 2019. This increase was primarily the result of a $5.1 billion increase in the average loan balance, which offset the decline in interest rates and drove a $35.0 million increase in loan interest income for the nine months ended September 30, 2020. This increase was offset in part by decreases in other interest income of $9.6 million and interest income from investment securities of $4.7 million for the comparable period due to the lower interest rate environment.

80

For the three months ended September 30, 2020, interest expense was $20.1 million, a decrease of $29.1 million, or 59.1%, compared to $49.2 million for the three months ended September 30, 2019. Interest expense on deposits decreased $31.1 million for the same period despite an increase in average interest-bearing deposits of $2.5 billion as the Company benefited from repricing efforts in a lower rate environment, resulting in a 99 basis point reduction in average cost of interest-bearing deposits.

For the nine months ended September 30, 2020, interest expense was $78.1 million, a decrease of $63.0 million, or 44.7%, compared to $141.2 million for the nine months ended September 30, 2019. Interest expense on deposits decreased $61.3 million for the same period despite an increase in average interest-bearing deposits of $2.6 billion, resulting in a 77 basis point reduction in average cost of interest-bearing deposits.

For the three months ended September 30, 2020, net interest income was $284.7 million, an increase of $18.3 million, or 6.9%, compared to $266.4 million for the three months ended September 30, 2019. The increase in net interest income reflects a $6.7 billion increase in average interest-earning assets, partially offset by an increase of $2.7 billion in average interest-bearing liabilities. The decrease in net interest margin of 70 basis points to 3.71% is largely the result of excess liquidity from deposit growth that has outpaced loan growth as well as a decrease in loan yields due to a lower rate environment and lower yields on PPP loans primarily driven by changes in prepayment assumptions that reduced net deferred loan fee accretion on PPP loans during the three months ended September 30, 2020. These decreases to net interest margin were offset by lower deposit and funding costs for the three months ended September 30, 2020 compared to the same period in 2019.

For the nine months ended September 30, 2020, net interest income was $852.2 million, an increase of $83.7 million, or 10.9%, compared to $768.4 million for the nine months ended September 30, 2019. The increase in net interest income reflects a $5.9 billion increase in average interest-earning assets, partially offset by an increase of $2.7 billion in average interest-bearing liabilities. The decrease in net interest margin of 53 basis points to 4.03% is the result of excess liquidity and a lower rate environment as explained in the above paragraphs.

Provision for Credit Losses

The provision for credit losses in each period is reflected as a reduction in earnings for that period and, upon the adoption of CECL, includes amounts related to funded loans, unfunded loan commitments, and investment securities. The provision is equal to the amount required to maintain the allowance for credit losses at a level that is adequate to absorb estimated lifetime credit losses inherent in the loan and investment securities portfolios. For the three and nine months ended September 30, 2020, the provision for credit losses was $14.7 million and $157.8 million, compared to $3.8 million and $15.3 million for the three and nine months ended September 30, 2019, respectively. The significant increase in the provision for credit losses from the three and nine months ended September 30, 2019 is primarily related to the current economic environment and estimating expected credit losses under the new CECL accounting standard. This standard changes the methodology for estimating credit losses on financial instruments from an incurred loss model to an expected total loss model. This results in the recognition of expected losses over the life of loans and HTM investment securities at the time that the loan is originated or the security is purchased, rather than after a loss has been incurred, which results in an acceleration in the timing of loss recognition. Further, as the Company's CECL models incorporate historical experience, current conditions, and reasonable and supportable forecasts in measuring expected credit losses, the worsening of economic assumptions due to the ongoing pandemic has also contributed to an elevated provision for credit losses for the nine months ended September 30, 2020.

81

Non-interest Income

The following table presents a summary of non-interest income for the periods presented: 

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020		2019		Increase (Decrease)		2020		2019		Increase (Decrease)
	(in thousands)
Service charges and fees	$	5,913	$	5,888	$	25	$	17,447	$	17,121	$	326
Card income	1,873		1,729		144		4,768		5,195		(427)
Foreign currency income	1,755		1,321		434		4,242		3,564		678
Income from bank owned life insurance	1,345		979		366		8,977		2,938		6,039
Income from equity investments	1,186		3,742		(2,556)		6,263		6,619		(356)
Lending related income and gains on sale of loans, net	705		539		166		2,072		1,343		729
Gain on sales of investment securities, net	—		3,152		(3,152)		230		3,152		(2,922)
Fair value gain (loss) adjustments on assets measured at fair value, net	5,882		222		5,660		(986)		4,628		(5,614)
Other income	1,947		1,869		78		3,972		4,509		(537)
Total non-interest income	$	20,606	$	19,441	$	1,165	$	46,985	$	49,069	$	(2,084)

Total non-interest income for the three months ended September 30, 2020 compared to the same period in 2019 increased by $1.2 million. The most significant increase in non-interest income relates to the net fair value gain adjustment on assets measured at fair value of $5.9 million for the three months ended September 30, 2020, compared to $0.2 million for the same period in 2019. This change is predominantly related to increases in the value of equity securities, primarily preferred stock of other financial institutions. Offsetting this increase is a decrease in the net gain on sales of investment securities and income from equity investments. During the three months ended September 30, 2019, the Company sold investment securities as part of a portfolio balancing initiative and recognized a net gain on sale of $3.2 million, which did not recur during the current period. Income from equity investments decreased $2.6 million due to a decrease in warrant income from the three months ended September 30, 2019.

Total non-interest income for the nine months ended September 30, 2020 compared to the same period in 2019 decreased by $2.1 million. The most significant decrease in non-interest income of $5.6 million relates to a net fair value loss adjustment incurred during the nine months ended September 30, 2020. As mentioned above, this change is predominantly related to valuation declines on preferred stock investments. In addition, there was a $3.2 million gain on security sales recognized during the nine months ended September 30, 2019 that did not recur in the current period. These decreases were offset in part by an increase in income from bank owned life insurance of $6.0 million primarily attributable to a one-time enhancement fee of $5.6 million from the surrender and replacement of certain policies, which was intended to offset the increase in tax expense related to the surrender.

82

Non-interest Expense

The following table presents a summary of non-interest expense for the periods presented:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020		2019		Increase (Decrease)		2020		2019		Increase (Decrease)
	(in thousands)
Salaries and employee benefits	$	78,757	$	70,978	$	7,779	$	220,455	$	205,328	$	15,127
Legal, professional, and directors' fees	10,034		8,248		1,786		31,105		26,885		4,220
Occupancy	9,426		8,263		1,163		25,752		24,251		1,501
Data processing	8,864		7,095		1,769		26,044		20,563		5,481
Deposit costs	3,246		11,537		(8,291)		14,098		24,930		(10,832)
Insurance	3,064		3,071		(7)		9,506		8,691		815
Loan and repossessed asset expenses	1,771		1,953		(182)		5,280		5,419		(139)
Business development	950		1,443		(493)		4,062		4,972		(910)
Marketing	848		842		6		2,621		2,640		(19)
Card expense	505		548		(43)		1,631		1,892		(261)
Intangible amortization	373		387		(14)		1,120		1,161		(41)
Net loss (gain) on sales / valuations of repossessed and other assets	123		3,379		(3,256)		(1,335)		2,856		(4,191)
Other expense	6,131		8,408		(2,277)		19,033		22,691		(3,658)
Total non-interest expense	$	124,092	$	126,152	$	(2,060)	$	359,372	$	352,279	$	7,093

Total non-interest expense for the three months ended September 30, 2020 decreased $2.1 million compared to the same period in 2019. This change primarily relates to deposit cost decreases of $8.3 million for the three months ended September 30, 2020 compared to the same period in 2019, primarily due to a decline in deposit earnings credits paid to account holders in a lower rate environment. In addition, there was a $3.1 million loss due to an OREO property impairment from the three months ended September 30, 2019 and a $2.3 million decrease in other expense from decreased travel and entertainment and charitable contribution expenses incurred in the three months ended September 30, 2020 as a result of COVID-19. These decreases were offset in part by an increase in salaries and employee benefits, occupancy expense, data processing, and legal, professional and director fees, which have increased as the Company supports its continued growth.

Total non-interest expense for the nine months ended September 30, 2020 compared to the same period in 2019 increased $7.1 million. This increase primarily relates to salaries and employee benefits, data processing, and legal, professional and directors' fees, which have increased as the Company supports its continued growth. These increases were offset in part by a decrease in deposit costs of $10.8 million for the nine months ended September 30, 2020 compared to the same period in 2019, primarily due to a decline in deposit earnings credits paid to account holders in a lower rate environment. In addition, there was a $3.1 loss due to OREO property impairment in the prior year and a $1.5 million gain on the sale of an OREO property in the current year. There was also a $3.7 million decrease in other expenses from decreased travel, entertainment and charitable contribution expenses incurred in the nine months ended September 30, 2020 as a result of COVID-19.

Income Taxes

The Company's effective tax rate was 18.50% and 18.30% for the three months ended September 30, 2020 and 2019, respectively. For the nine months ended September 30, 2020 and 2019, the Company's effective tax rate was 18.05% and 17.52%, respectively. The increase in the effective tax rate from the three and nine months ended September 30, 2019 is due primarily to tax expense associated with a surrender of bank owned life insurance, detriments from vested stock compensation and increased state tax accruals, partially offset by increases in forecasted tax-exempt income and investment tax credits in 2020.

83

Business Segment Results

The Company's reportable segments are aggregated primarily based on geographic location, services offered, and markets served. The Company's regional segments, which include Arizona, Nevada, Southern California, and Northern California, provide full service banking and related services to their respective markets. The Company's NBL segments, which include HOA Services, Public & Nonprofit Finance, Technology & Innovation, HFF, and Other NBLs, provide specialized banking services to niche markets. These NBLs are managed centrally and are broader in geographic scope than the Company's other segments, though still predominately located within the Company's core market areas. The Corporate & Other segment consists of corporate-related items, income and expense items not allocated to the Company's other reportable segments, and inter-segment eliminations.

The following tables present selected operating segment information for the periods presented:

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
At September 30, 2020	(in millions)
Loans, net of deferred loan fees and costs	$	26,014.0	$	4,388.1	$	2,612.2	$	2,376.7	$	1,785.8
Deposits	28,843.4		8,541.5		4,733.9		3,502.0		2,741.1
At December 31, 2019
Loans, net of deferred loan fees and costs	$	21,123.3	$	3,847.9	$	2,252.5	$	2,253.9	$	1,311.2
Deposits	22,796.5		5,384.7		4,350.1		2,585.3		2,373.6

	(in thousands)
Three Months Ended September 30, 2020
Pre-tax income	$	166,591	$	57,789	$	24,668	$	17,609	$	15,993
Nine Months Ended September 30, 2020
Pre-tax income	$	381,934	$	129,347	$	77,254	$	40,651	$	40,655
Three Months Ended September 30, 2019
Pre-tax income	$	155,908	$	43,305	$	28,093	$	19,713	$	12,824
Nine Months Ended September 30, 2019
Pre-tax income	$	449,926	$	114,934	$	81,852	$	53,304	$	39,066

84

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
At September 30, 2020	(in millions)
Loans, net of deferred loan fees and costs	$	280.0	$	1,686.7	$	2,329.3	$	2,099.3	$	8,451.8	$	4.1
Deposits	3,697.9		—		4,646.4		—		61.4		919.2
At December 31, 2019
Loans, net of deferred loan fees and costs	$	237.2	$	1,635.6	$	1,552.0	$	1,930.8	$	6,098.7	$	3.5
Deposits	3,210.1		0.1		3,771.5		—		36.9		1,084.2

	(in thousands)
Three Months Ended September 30, 2020
Pre-tax income	$	12,560	$	295	$	48,657	$	7,740	$	39,877	$	(58,597)
Nine Months Ended September 30, 2020
Pre-tax income	$	40,323	$	684	$	85,024	$	4,559	$	101,267	$	(137,830)
Three Months Ended September 30, 2019
Pre-tax income	$	12,229	$	1,740	$	26,391	$	8,692	$	22,113	$	(19,192)
Nine Months Ended September 30, 2019
Pre-tax income	$	36,984	$	4,731	$	66,211	$	28,935	$	53,840	$	(29,931)

85

BALANCE SHEET ANALYSIS

Total assets increased $6.5 billion, or 24.3%, to $33.3 billion at September 30, 2020, compared to $26.8 billion at December 31, 2019. The increase in total assets relates primarily to organic loan growth. Loans increased $4.9 billion, or 23.2%, to $26.0 billion at September 30, 2020, compared to $21.1 billion at December 31, 2019. The increase in loans from December 31, 2019, which includes $1.7 billion in PPP loans, was driven by commercial and industrial loans of $4.3 billion, with smaller increases in construction and land development loans of $348.3 million, residential real estate loans of $239.5 million, and CRE, non-owner occupied loans of $161.8 million. These increases were partially offset by a decrease in CRE, owner occupied loans of $103.4 million.

Total liabilities increased $6.3 billion, or 26.5%, to $30.1 billion at September 30, 2020, compared to $23.8 billion at December 31, 2019. The increase in liabilities is due primarily to an increase in total deposits of $6.0 billion, or 26.5%, to $28.8 billion. The increase in deposits from December 31, 2019 was driven by increases of $4.5 billion in non-interest bearing demand deposits, $1.5 billion in savings and money market accounts, and $793.8 million in interest bearing demand deposits, offset in part by a decrease of $676.1 million in certificates of deposit. In addition, qualifying debt increased by $225.2 million due to the issuance of $225.0 million of subordinated debt, recorded net of issue costs, in May 2020.

Total stockholders’ equity increased by $207.3 million, or 6.9%, to $3.2 billion at September 30, 2020 from December 31, 2019. The increase in stockholders' equity is primarily a function of net income, partially offset by share repurchases and dividends to shareholders as well as the adoption impact of CECL.

Investment securities

Debt securities are classified at the time of acquisition as either HTM, AFS, or trading based upon various factors, including asset/liability management strategies, liquidity and profitability objectives, and regulatory requirements. HTM securities are carried at amortized cost, adjusted for amortization of premiums or accretion of discounts. AFS securities are securities that may be sold prior to maturity based upon asset/liability management decisions. Investment securities classified as AFS are carried at fair value. Unrealized gains or losses on AFS debt securities are recorded as part of AOCI in stockholders’ equity, net of tax. Amortization of premiums or accretion of discounts on MBS is periodically adjusted for estimated prepayments. Trading securities are reported at fair value, with unrealized gains and losses included in current period earnings.

The Company's investment securities portfolio is utilized as collateral for borrowings, required collateral for public deposits and customer repurchase agreements, and to manage liquidity, capital, and interest rate risk.

The following table summarizes the carrying value of the investment securities portfolio for each of the periods below: 

	September 30, 2020		December 31, 2019
	(in thousands)
Debt securities
CDO	$	8,176	$	10,142
Commercial MBS issued by GSEs	95,657		94,253
Corporate debt securities	186,609		99,961
Municipal securities	22,159		7,773
Private label residential MBS	1,264,237		1,129,227
Residential MBS issued by GSEs	1,361,556		1,412,060
Tax-exempt	1,515,500		1,039,962
Trust preferred securities	25,208		27,040
U.S. government sponsored agency securities	—		10,000
U.S. treasury securities	600		999
Total debt securities	$	4,479,702	$	3,831,417
Equity securities
CRA investments	$	53,545	$	52,504
Preferred stock	107,016		86,197
Total equity securities	$	160,561	$	138,701

86

Loans

The table below summarizes the distribution of the Company’s held for investment loan portfolio: 

	September 30, 2020
	(in thousands)
Commercial and industrial
Tech & Innovation	$	2,277,889
Other commercial and industrial	5,993,712
CRE - owner occupied	1,970,163
CRE - non-owner occupied
Hotel Franchise Finance	1,942,886
Other CRE - non-owned occupied	3,433,932
Residential	2,330,064
Construction and land development	2,267,922
Warehouse lending	3,926,852
Municipal & nonprofit	1,686,690
Other	163,144
Total loans HFI	25,993,254
Allowance for credit losses	(310,560)
Total loans HFI, net of allowance	$	25,682,694

		December 31, 2019
	(in thousands)
Commercial and industrial		$	9,382,043
Commercial real estate - non-owner occupied		5,245,634
Commercial real estate - owner occupied		2,316,913
Construction and land development		1,952,156
Residential real estate		2,147,664
Consumer		57,083
Loans, net of deferred loan fees and costs		21,101,493
Allowance for credit losses		(167,797)
Total loans HFI		$	20,933,696

Loans that are held for investment are stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts on acquired and purchased loans, and an allowance for credit losses. Net deferred loan fees of $81.4 million and $47.7 million reduced the carrying value of loans as of September 30, 2020 and December 31, 2019, respectively. Net unamortized purchase premiums on acquired and purchased loans of $22.1 million and $19.6 million increased the carrying value of loans as of September 30, 2020 and December 31, 2019, respectively.

As of September 30, 2020 and December 31, 2019, the Company also had $20.8 million and $21.8 million of HFS loans, respectively.

Concentrations of Lending Activities

The Company monitors concentrations within four broad categories: geography, industry, product, and collateral. The Company’s loan portfolio includes significant credit exposure to the CRE market. As of each of the periods ended September 30, 2020 and December 31, 2019, CRE related loans accounted for approximately 38% and 45% of total loans, respectively. Substantially all of these loans are secured by first liens with an initial loan to value ratio of generally not more than 75%. Approximately 29% and 31% of these CRE loans, excluding construction and land loans, were owner-occupied at September 30, 2020 and December 31, 2019, respectively.

87

Non-performing Assets

Total non-performing loans increased by $119.5 million at September 30, 2020 to $203.8 million from $84.3 million at December 31, 2019.

	September 30, 2020			December 31, 2019
	(dollars in thousands)
Total nonaccrual loans (1)	$	146,472		$	55,968
Loans past due 90 days or more on accrual status	28,129			—
Accruing troubled debt restructured loans	29,192			28,356
Total nonperforming loans	$	203,793		$	84,324
Other assets acquired through foreclosure, net	$	8,591		$	13,850
Nonaccrual HFI and HFS loans to funded HFI loans	0.56		%	0.27		%
Nonaccrual HFI loans to funded HFI loans	0.48		%	0.27		%
Loans past due 90 days or more on accrual status to funded HFI loans	0.11		%	—

(1)Includes non-accrual TDR loans of $31.6 million and $10.6 million at September 30, 2020 and December 31, 2019, respectively, and non-accrual HFS loans of $20.8 million and zero at September 30, 2020 and December 31, 2019, respectively.

Interest income that would have been recorded under the original terms of non-accrual loans was $1.7 million and $0.7 million for the three months ended September 30, 2020 and 2019, respectively, and $4.1 million and $1.5 million for the nine months ended September 30, 2020 and 2019, respectively.

The composition of nonaccrual HFI loans by loan type and by segment were as follows: 

	September 30, 2020
	Nonaccrual Balance		Percent of Nonaccrual Balance		Percent of Total HFI Loans
	(dollars in thousands)
Commercial and industrial
Tech & Innovation	$	18,725	14.89	%	0.07	%
Other commercial and industrial	31,611		25.15		0.12
CRE - owner occupied	38,567		30.68		0.15
CRE - non-owner occupied
Hotel Franchise Finance	—		—		—
Other CRE - non-owned occupied	29,071		23.13		0.11
Residential	5,388		4.29		0.02
Construction and land development	192		0.15		0.00
Warehouse lending	—		—		—
Municipal & nonprofit	1,952		1.55		0.01
Other	203		0.16		0.00
Total non-accrual loans	$	125,709	100.00	%	0.48	%

		December 31, 2019
		Nonaccrual Balance		Percent of Nonaccrual Balance		Percent of Total HFI Loans
	(dollars in thousands)
Commercial and industrial		$	24,501	43.77	%	0.12	%
Commercial real estate		23,720		42.38		0.11
Construction and land development		2,147		3.84		0.01
Residential real estate		5,600		10.01		0.03
Consumer		—		—		—
Total non-accrual loans		$	55,968	100.00	%	0.27	%

88

	September 30, 2020				December 31, 2019
	Nonaccrual Loans		Percent of Segment's Total HFI Loans		Nonaccrual Loans		Percent of Segment's Total HFI Loans
	(dollars in thousands)
Arizona	$	46,246	1.05	%	$	29,062	0.76	%
Nevada	4,588		0.18		8,001		0.36
Southern California	24,797		1.04		1,759		0.08
Northern California	24,346		1.36		5,193		0.40
HOA Services	72		0.03		—		—
Public & Nonprofit Finance	1,952		0.12		2,147		0.13
Technology and Innovation	18,725		0.80		5,867		0.38
Other NBLs	4,983		0.06		3,939		0.06
Total non-accrual loans	$	125,709	0.48	%	$	55,968	0.27	%

Troubled Debt Restructured Loans

A TDR loan is a loan on which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. The loan terms that have been modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. The majority of the Company's modifications are extensions in terms or deferral of payments which result in no lost principal or interest followed by reductions in interest rates or accrued interest. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.

Allowance for Credit Losses

The following table summarizes the activity in the Company's allowance for credit losses for the period indicated: 

	Three Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	June 30, 2020								September 30, 2020
	(1)								(1)
	(in thousands)
Commercial and industrial
Tech & Innovation	$	54,559	$	(9,359)	$	6,364	$	—	$	38,836
Other commercial and industrial	109,930		(621)		748		(192)		108,753
CRE - owner occupied	15,587		3,897		83		(5)		19,406
CRE - non-owner occupied
Hotel Franchise Finance	35,864		2,163		—		—		38,027
Other CRE - non-owned occupied	32,672		9,196		1,246		—		40,622
Residential	1,725		16		307		(355)		1,789
Construction and land development	35,792		2,983		—		(6)		38,781
Warehouse lending	743		95		—		—		838
Municipal & nonprofit	17,128		768		—		—		17,896
Other	6,550		(934)		25		(21)		5,612
Total	$	310,550	$	8,204	$	8,773	$	(579)	$	310,560

Net charge-offs to average loans outstanding	0.13	%
Allowance for credit losses to funded HFI loans	1.19

(1)Includes an estimate of future recoveries.

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	Nine Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	January 1, 2020								September 30, 2020
	(1)								(1)
	(in thousands)
Commercial and industrial
Tech & Innovation	$	22,394	$	25,556	$	9,114	$	—	$	38,836
Other commercial and industrial	95,784		13,653		2,684		(2,000)		108,753
CRE - owner occupied	10,420		9,100		126		(12)		19,406
CRE - non-owner occupied
Hotel Franchise Finance	14,104		23,923		—		—		38,027
Other CRE - non-owned occupied	10,503		30,684		2,131		(1,566)		40,622
Residential	3,814		(2,103)		307		(385)		1,789
Construction and land development	6,218		32,540		—		(23)		38,781
Warehouse lending	246		592		—		—		838
Municipal & nonprofit	17,397		499		—		—		17,896
Other	6,045		(314)		231		(112)		5,612
Total	$	186,925	$	134,130	$	14,593	$	(4,098)	$	310,560

Net charge-offs to average loans outstanding 0.16  %

(1)Includes an estimate of future recoveries.

	Three Months Ended September 30, 2019
	Balance,		Charge-offs		Recoveries		Provision for (Reversal of) Credit Losses		Balance,
	June 30, 2019								September 30, 2019
	(in thousands)
Construction and land development	$	26,091	$	—	$	(17)	$	1,210	$	27,318
Commercial real estate	41,258		139		(8)		4,817		45,944
Residential real estate	12,606		9		(131)		804		13,532
Commercial and industrial	79,635		1,950		(2,549)		(2,815)		77,419
Consumer	819		1		(6)		(16)		808
Total	$	160,409	$	2,099	$	(2,711)	$	4,000	$	165,021

Net recoveries to average loans outstanding	(0.01)	%
Allowance for credit losses to funded HFI loans	0.91

	Nine Months Ended September 30, 2019
	Balance,		Charge-offs		Recoveries		Provision for (Reversal of) Credit Losses		Balance,
	December 31, 2018								September 30, 2019
	(in thousands)
Construction and land development	$	22,513	$	141	$	(81)	$	4,865	$	27,318
Commercial real estate	34,829		139		(900)		10,354		45,944
Residential real estate	11,276		594		(251)		2,599		13,532
Commercial and industrial	83,118		6,092		(3,521)		(3,128)		77,419
Consumer	981		2		(19)		(190)		808
Total	$	152,717	$	6,968	$	(4,772)	$	14,500	$	165,021

Net charge-offs to average loans outstanding 0.02  %

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The following table summarizes the allocation of the allowance for credit losses by loan type.

	September 30, 2020
	Allowance for credit losses		Percent of total allowance for credit losses		Percent of loan type to total HFI loans
	(dollars in thousands)
Commercial and industrial
Tech & Innovation	$	38,836	12.5	%	8.8	%
Other commercial and industrial	108,753		35.0		23.1
CRE - owner occupied	19,406		6.2		7.6
CRE - non-owner occupied
Hotel Franchise Finance	38,027		12.2		7.5
Other CRE - non-owned occupied	40,622		13.1		13.2
Residential	1,789		0.6		9.0
Construction and land development	38,781		12.5		8.7
Warehouse lending	838		0.3		15.1
Municipal & nonprofit	17,896		5.8		6.5
Other	5,612		1.8		0.6
Total	$	310,560	100.0	%	100.0	%

	December 31, 2019
	Allowance for credit losses		Percent of total allowance for credit losses		Percent of loan type to total HFI loans
	(dollars in thousands)
Commercial and industrial	$	82,302	49.0	%	44.5	%
Commercial Real Estate	47,273		28.2		35.8
Construction and Land Development	23,894		14.2		9.2
Residential Real Estate	13,714		8.2		10.2
Consumer	614		0.4		0.3
Total	$	167,797	100.0	%	100.0	%

Problem Loans

The Company classifies loans consistent with federal banking regulations using a nine category grading system. These loan grades are described in further detail in "Item 1. Business” of the Company's Annual Report for the year ended December 31, 2019. The following table presents information regarding potential and actual problem loans, consisting of loans graded Special Mention, Substandard, Doubtful, and Loss, but still performing: 

	September 30, 2020
	Number of Loans	Loan Balance		Percent of Loan Balance		Percent of Total HFI Loans
	(dollars in thousands)
Commercial and industrial
Tech & Innovation	28	$	14,929	3.36	%	0.06	%
Other commercial and industrial	71	186,478		41.97		0.72
CRE - owner occupied	30	44,247		9.96		0.17
CRE - non-owner occupied
Hotel Franchise Finance	9	115,831		26.08		0.45
Other CRE - non-owned occupied	12	30,940		6.97		0.12
Residential	1	32		0.01		—
Construction and land development	8	42,378		9.54		0.16
Warehouse lending	—	—		—		—
Municipal & nonprofit	3	6,525		1.47		0.03
Other	14	2,835		0.64		0.01
Total	176	$	444,195	100.00	%	1.72	%

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	December 31, 2019
	Number of Loans	Loan Balance		Percent of Loan Balance		Percent of Total HFI Loans
	(dollars in thousands)
Commercial and industrial	73	$	96,464	43.06	%	0.46	%
Commercial real estate	37	107,839		48.14		0.51
Construction and land development	10	18,971		8.47		0.09
Residential real estate	3	727		0.33		0.00
Consumer	1	10		0.00		0.00
Total	124	$	224,011	100.00	%	1.06	%

Goodwill and Other Intangible Assets

Goodwill represents the excess consideration paid for net assets acquired in a business combination over their fair value. Goodwill and other intangible assets acquired in a business combination that are determined to have an indefinite useful life are not subject to amortization, but are subsequently evaluated for impairment at least annually. The Company has goodwill and intangible assets totaling $299.0 million at September 30, 2020, which have been allocated to the Nevada, Northern California, Technology & Innovation, and HFF operating segments.

The Company performs its annual goodwill and intangibles impairment tests as of October 1 each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. During the three and nine months ended September 30, 2020 and 2019, there were no events or circumstances that indicated an interim impairment test of goodwill or other intangible assets was necessary.

Deferred Tax Assets

As of September 30, 2020, the net deferred tax asset was $46.6 million, an increase of $28.6 million from December 31, 2019. This overall increase in the net deferred tax asset was primarily the result of an increase in the allowance for credit losses under the new CECL accounting guidance, which upon adoption on January 1, 2020, increased the deferred tax asset by $8.7 million. Expected tax credit carryovers which were not fully offset by additional unrealized gains on AFS securities also contributed to the increase.

At September 30, 2020 and December 31, 2019, the Company had no deferred tax valuation allowance.

Deposits

Deposits are the primary source for funding the Company's asset growth. Total deposits increased to $28.8 billion at September 30, 2020, from $22.8 billion at December 31, 2019, an increase of $6.0 billion, or 26.5%. The increase in deposits is largely attributable to an increase in non-interest bearing demand deposits of $4.5 billion, and increases of $1.5 billion in savings and money market accounts and $793.8 million in interest bearing demand deposits, partially offset by a decrease in certificates of deposit of $676.1 million.

WAB is a participant in the Promontory Interfinancial Network, a network that offers deposit placement services such as CDARS and ICS, which offer products that qualify large deposits for FDIC insurance. At September 30, 2020 and December 31, 2019, the Company also has $914.9 million and $1.1 billion, respectively, of wholesale brokered deposits. In addition, deposits for which the Company provides account holders with earnings credits and referral fees totaled $3.6 billion and $3.1 billion at September 30, 2020 and December 31, 2019, respectively. The Company incurred $2.9 million and $11.2 million in deposit related costs during the three months ended September 30, 2020 and 2019, respectively. The Company incurred $13.0 million and $24.0 million in deposit related costs during the nine months ended September 30, 2020 and 2019, respectively.

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The average balances and weighted average rates paid on deposits are presented below:

	Three Months Ended September 30,
	2020				2019
	Average Balance		Rate		Average Balance		Rate
	(dollars in thousands)
Interest-bearing transaction accounts	$	3,636,299	0.16	%	$	2,488,581	0.81	%
Savings and money market accounts	10,170,085		0.22		8,456,531		1.25
Certificates of deposit	1,845,479		1.10		2,250,362		2.06
Total interest-bearing deposits	15,651,863		0.31		13,195,474		1.30
Non-interest-bearing demand deposits	12,422,208		—		8,916,568		—
Total deposits	$	28,074,071	0.17	%	$	22,112,042	0.78	%

	Nine Months Ended September 30,
	2020				2019
	Average Balance		Rate		Average Balance		Rate
	(dollars in thousands)
Interest-bearing transaction accounts	$	3,410,882	0.29	%	$	2,511,860	0.86	%
Savings and money market accounts	9,546,249		0.40		7,854,914		1.25
Certificates of deposit	2,113,020		1.47		2,114,659		1.99
Total interest-bearing deposits	15,070,151		0.53		12,481,433		1.30
Non-interest-bearing demand deposits	10,813,205		—		8,118,791		—
Total deposits	$	25,883,356	0.31	%	$	20,600,224	0.79	%

Other Borrowings

The Company from time to time utilizes short-term borrowed funds to support short-term liquidity needs generally created by increased loan demand. The majority of these short-term borrowed funds consist of advances from the FHLB and customer repurchase agreements. The Company’s borrowing capacity with the FHLB is determined based on collateral pledged, generally consisting of securities and loans. In addition, the Company has borrowing capacity from other sources, collateralized by securities, including securities sold under agreements to repurchase, which are reflected at the amount of cash received in connection with the transaction, and may require additional collateral based on the fair value of the underlying securities. At September 30, 2020, total short-term borrowed funds consist of FHLB advances of $10.0 million and customer repurchase agreements of $19.7 million. At December 31, 2019, total short-term borrowed funds consisted of customer repurchase agreements of $16.7 million.

Qualifying Debt

Qualifying debt consists of subordinated debt and junior subordinated debt, inclusive of issuance costs and fair market value adjustments. At September 30, 2020, the carrying value of qualifying debt was $618.8 million, compared to $393.6 million at December 31, 2019. The increase in qualifying debt from December 31, 2019 is due to issuance of $225.0 million of subordinated debt, recorded net of issuance costs, in May 2020.

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Capital Resources

The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements could trigger certain mandatory or discretionary actions that, if undertaken, could have a direct material effect on the Company’s business and financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities, and certain off-balance sheet items (discussed in "Note 11. Commitments and Contingencies" to the Unaudited Consolidated Financial Statements) as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.

In March 2020, the federal bank regulatory authorities issued an interim final rule that delays the estimated impact on regulatory capital resulting from the adoption of CECL. The interim final rule provides banking organizations that implement CECL before the end of 2020 the option to delay for two years the estimated impact of CECL on regulatory capital relative to regulatory capital determined under the prior incurred loss methodology, followed by a three-year transition period to phase out the aggregate amount of capital benefit provided during the initial two-year delay. The Company has elected the five-year CECL transition option in connection with its adoption of CECL on January 1, 2020. As a result, capital ratios and amounts as of September 30, 2020 exclude the impact of the increased allowance for credit losses related to the adoption of ASC 326.

As of September 30, 2020 and December 31, 2019, the Company and the Bank exceeded the capital levels necessary to be classified as well-capitalized, as defined by the banking agencies. The actual capital amounts and ratios for the Company and the Bank are presented in the following tables as of the periods indicated:

	Total Capital		Tier 1 Capital		Risk-Weighted Assets		Tangible Average Assets		Total Capital Ratio		Tier 1 Capital Ratio		Tier 1 Leverage Ratio		Common Equity Tier 1
	(dollars in thousands)
September 30, 2020
WAL	$	3,794,419	$	2,991,443	$	29,079,735	$	32,190,510	13.0	%	10.3	%	9.3	%	10.0	%
WAB	3,555,485		2,925,840		29,102,161		32,211,409		12.2		10.1		9.1		10.1
Well-capitalized ratios									10.0		8.0		5.0		6.5
Minimum capital ratios									8.0		6.0		4.0		4.5
December 31, 2019
WAL	$	3,257,874	$	2,775,390	$	25,390,142	$	26,110,275	12.8	%	10.9	%	10.6	%	10.6	%
WAB	3,030,301		2,703,549		25,452,261		26,134,431		11.9		10.6		10.3		10.6
Well-capitalized ratios									10.0		8.0		5.0		6.5
Minimum capital ratios									8.0		6.0		4.0		4.5

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Critical Accounting Policies

Critical accounting policies are defined as those that are reflective of significant judgments and uncertainties and could potentially result in materially different results under different assumptions and conditions. The critical accounting policies upon which the Company's financial condition and results of operations depend, and which involve the most complex subjective decisions or assessments, are included in the discussion entitled "Critical Accounting Policies" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations," in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2019, and all amendments thereto, as filed with the SEC.

During the first quarter of 2020, the Company adopted the ASUs related to credit losses, which include ASU 2016-13, Measurement of Credit Losses on Financial Instruments, ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, ASU 2019-05, Financial Instruments - Credit Losses, and ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments—Credit Losses. The new standards significantly change the impairment model for most financial assets that are measured at amortized cost, including off-balance sheet credit exposures, from an incurred loss model to an expected loss model. The amendments in ASU 2016-13 require that an organization measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. In future periods, evaluations of the overall loan portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the allowance for credit losses and credit loss expense in those future periods. The allowance level is influenced by loan volumes, loan asset quality ratings, delinquency status, historical credit loss experience, loan performance characteristics, and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. Changes to the assumptions in the model in future periods could have a material impact on the Company's Consolidated Financial Statements. See "Note 1. Summary of Significant Accounting Policies" for a detailed discussion of the Company's methodologies for estimating expected credit losses.

There were no other material changes to the critical accounting policies disclosed in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

Liquidity

Liquidity is the ongoing ability to accommodate liability maturities and deposit withdrawals, fund asset growth and business operations, and meet contractual obligations through unconstrained access to funding at reasonable market rates. Liquidity management involves forecasting funding requirements and maintaining sufficient capacity to meet the needs and accommodate fluctuations in asset and liability levels due to changes in the Company's business operations or unanticipated events, including the ongoing COVID-19 pandemic.

The ability to have readily available funds sufficient to repay fully maturing liabilities is of primary importance to depositors, creditors, and regulators. The Company's liquidity, represented by cash and amounts due from banks, federal funds sold, and non-pledged marketable securities, is a result of the Company's operating, investing, and financing activities and related cash flows. In order to ensure funds are available when necessary, on at least a quarterly basis, the Company projects the amount of funds that will be required over a twelve-month period and it also strives to maintain relationships with a diversified customer base. Liquidity requirements can also be met through short-term borrowings or the disposition of short-term assets.

While the Company does not anticipate any need for additional liquidity, in response to the uncertainty regarding the severity and duration of the COVID-19 pandemic, the Company has taken several actions to ensure the strength of its liquidity position. These actions include establishing a $1.8 billion Federal Reserve lending facility in connection with funding loans to small and medium-sized businesses and suspending stock repurchases effective as of April 17, 2020. In addition, the Company is also in a position to pledge additional collateral to increase its borrowing capacity with the FRB, if necessary.

The following table presents the available and outstanding balances on the Company's lines of credit:

	September 30, 2020
	Available Balance		Outstanding Balance
	(in millions)
Unsecured fed funds credit lines at correspondent banks	$	2,402.0	$	—

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In addition to lines of credit, the Company has borrowing capacity with the FHLB and FRB from pledged loans and securities. The borrowing capacity, outstanding borrowings, and available credit as of September 30, 2020 are presented in the following table:

	September 30, 2020
	(in millions)
FHLB:
Borrowing capacity	$	4,412.9
Outstanding borrowings	10.0
Letters of credit	21.0
Total available credit	$	4,381.9
FRB:
Borrowing capacity	$	2,414.9
Outstanding borrowings	—
Total available credit	$	2,414.9

The Company has a formal liquidity policy and, in the opinion of management, its liquid assets are considered adequate to meet cash flow needs for loan funding and deposit cash withdrawals for the next 90-120 days. At September 30, 2020, there was $4.6 billion in liquid assets, comprised of $1.4 billion in cash and cash equivalents and $3.1 billion in unpledged marketable securities. At December 31, 2019, the Company maintained $2.9 billion in liquid assets, comprised of $434.6 million of cash and cash equivalents and $2.5 billion of unpledged marketable securities.

The Parent maintains liquidity that would be sufficient to fund its operations and certain non-bank affiliate operations for an extended period should funding from normal sources be disrupted. Since deposits are taken by WAB and not by the Parent, Parent liquidity is not dependent on the Bank's deposit balances. In the Company's analysis of Parent liquidity, it is assumed that the Parent is unable to generate funds from additional debt or equity issuances, receives no dividend income from subsidiaries and does not pay dividends to stockholders, while continuing to make non-discretionary payments needed to maintain operations and repayment of contractual principal and interest payments owed by the Parent and affiliated companies. Under this scenario, the amount of time the Parent and its non-bank subsidiary can operate and meet all obligations before the current liquid assets are exhausted is considered as part of the Parent liquidity analysis. Management believes the Parent maintains adequate liquidity capacity to operate without additional funding from new sources for over twelve months.

WAB maintains sufficient funding capacity to address large increases in funding requirements, such as deposit outflows. This capacity is comprised of liquidity derived from a reduction in asset levels and various secured funding sources. On a long-term basis, the Company’s liquidity will be met by changing the relative distribution of its asset portfolios (for example, by reducing investment or loan volumes, or selling or encumbering assets). Further, the Company can increase liquidity by soliciting higher levels of deposit accounts through promotional activities and/or borrowing from correspondent banks, the FHLB of San Francisco, and the FRB. At September 30, 2020, the Company's long-term liquidity needs primarily relate to funds required to support loan originations, commitments, and deposit withdrawals, which can be met by cash flows from investment payments and maturities, and investment sales, if necessary.

The Company’s liquidity is comprised of three primary classifications: 1) cash flows provided by operating activities; 2) cash flows used in investing activities; and 3) cash flows provided by financing activities. Net cash provided by or used in operating activities consists primarily of net income, adjusted for changes in certain other asset and liability accounts and certain non-cash income and expense items, such as the provision for credit losses, investment and other amortization and depreciation. For the nine months ended September 30, 2020 and 2019, net cash provided by operating activities was $450.1 million and $534.5 million, respectively.

The Company's primary investing activities are the origination of real estate and commercial loans, the collection of repayments of these loans, and the purchase and sale of securities. The Company's net cash provided by and used in investing activities has been primarily influenced by its loan and securities activities. The net increase in loans for the nine months ended September 30, 2020 and 2019 was $4.8 billion and $2.4 billion, respectively. There was a net increase in investment securities for the nine months ended September 30, 2020 and 2019 of $663.5 million and $221.1 million, respectively.

Net cash provided by financing activities has been impacted significantly by increased deposit levels. During the nine months ended September 30, 2020 and 2019, net deposits increased $6.0 billion and $3.3 billion, respectively.

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Fluctuations in core deposit levels may increase the Company's need for liquidity as certificates of deposit mature or are withdrawn before maturity, and as non-maturity deposits, such as checking and savings account balances, are withdrawn. Additionally, the Company is exposed to the risk that customers with large deposit balances will withdraw all or a portion of such deposits, due in part to the FDIC limitations on the amount of insurance coverage provided to depositors. To mitigate the uninsured deposit risk, the Company participates in the CDARS and ICS programs, which allow an individual customer to invest up to $50.0 million and $150.0 million, respectively, through one participating financial institution or, a combined total of $200.0 million per individual customer, with the entire amount being covered by FDIC insurance. As of September 30, 2020, the Company has $449.3 million of CDARS and $1.1 billion of ICS deposits.

As of September 30, 2020, the Company has $914.9 million of wholesale brokered deposits outstanding. Brokered deposits are generally considered to be deposits that have been received from a third party who is engaged in the business of placing deposits on behalf of others. A traditional deposit broker will direct deposits to the banking institution offering the highest interest rate available. Federal banking laws and regulations place restrictions on depository institutions regarding brokered deposits because of the general concern that these deposits are not relationship based and are at a greater risk of being withdrawn and placed on deposit at another institution offering a higher interest rate, thus posing liquidity risk for institutions that gather brokered deposits in significant amounts.

Federal and state banking regulations place certain restrictions on dividends paid. The total amount of dividends which may be paid at any date is generally limited to the retained earnings of the bank. Dividends paid by WAB to the Parent would be prohibited if the effect thereof would cause the Bank’s capital to be reduced below applicable minimum capital requirements. During the three and nine months ended September 30, 2020, WAB paid dividends to the Parent of $15.0 million and $145.0 million, respectively. Subsequent to September 30, 2020, WAB paid dividends to the Parent of $15.0 million.

Recent accounting pronouncements

See "Note 1. Summary of Significant Accounting Policies," of the Notes to Unaudited Consolidated Financial Statements contained in Item 1. Financial Statements for information on recent and recently adopted accounting pronouncements and their expected impact, if any, on the Company's Consolidated Financial Statements.

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Supervision and Regulation

The following information is intended to update, and should be read in conjunction with, the information contained under the caption “Supervision and Regulation” in the Company’s Annual Report on Form 10-K and the supplemental disclosure related thereto contained under the same caption in the Company’s Form 10-Q for the quarter ended June 30, 2020.

CARES Act

On March 27, 2020, the CARES Act was passed by Congress and signed into law by the President. The CARES Act provided approximately $2.2 trillion in direct economic relief in response to the public health and economic impacts of COVID-19. Many of the CARES Act’s programs are, and remain, dependent upon the direct involvement of U.S. financial institutions like the Company and the Bank. These programs have been implemented through rules and guidance adopted by federal departments and agencies, including the U.S. Department of Treasury, the Federal Reserve, and other federal bank regulatory authorities, including those with direct supervisory jurisdiction over the Company and the Bank. Furthermore, as the COVID-19 pandemic evolves, federal regulatory authorities continue to issue additional guidance with respect to the implementation, lifecycle, and eligibility requirements for the various CARES Act programs as well as industry-specific recovery procedures for COVID-19. In addition, it is possible that Congress will enact supplementary COVID-19 response legislation, including new bills comparable in scope to the CARES Act, prior to the end of 2020.

Set forth below is a brief overview of select provisions of the CARES Act and other regulations and supervisory guidance related to the COVID-19 pandemic that are applicable to the operations and activities of the Company and its subsidiaries, including the Bank. The following description is qualified in its entirety by reference to the full text of the CARES Act and the statutes, regulations, and policies described herein. Future legislation and/or amendments to the provisions of the CARES Act or changes to any of the statutes, regulations, or regulatory policies applicable to the Company and its subsidiaries could have a material effect on the Company. Such legislation and related regulations and supervisory guidance will be implemented over time and will remain subject to review by Congress and the implementing regulations issued by federal regulatory authorities. The Company continues to assess the impact of the CARES Act, the potential impact of new COVID-19 legislation, and other statutes, regulations, and supervisory guidance related to the COVID-19 pandemic.

Paycheck Protection Program. The CARES Act amended the SBA’s loan program, in which the Bank participates, to create a guaranteed, unsecured loan program, the PPP, to fund operational costs of eligible businesses, organizations and self-employed persons during COVID-19. On June 5, 2020, the President signed the PPPFA into law, which among other things, gave borrowers additional time and flexibility to use PPP loan proceeds. Shortly thereafter, and due to the evolving impact of the COVID-19 pandemic, the President signed additional legislation authorizing the SBA to resume accepting PPP applications on July 6, 2020 and extending the PPP application deadline to August 8, 2020. It is anticipated that additional revisions to the SBA’s interim final rules on forgiveness and loan review procedures, including potential Congressional legislation on those issues, will be forthcoming to address these and related changes. As a participating lender in the PPP, the Bank continues to monitor legislative, regulatory, and supervisory developments related thereto.

Troubled Debt Restructuring and Loan Modifications for Affected Borrowers. The CARES Act permits banks to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 that would otherwise be characterized as TDRs and suspend any determination related thereto if (i) the loan modification is made between March 1, 2020 and the earlier of December 31, 2020 or 60 days after the end of the COVID-19 emergency declaration, and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. Federal bank regulatory authorities also issued guidance to encourage banks to make loan modifications for borrowers affected by COVID-19 and to assure banks that they will not be criticized by examiners for doing so.

Federal Reserve Programs and Other Recent Initiatives

Main Street Lending Program. The CARES Act encouraged the Federal Reserve, in coordination with the Secretary of the Treasury, to establish or implement various programs to help midsize businesses, nonprofits, and municipalities. On April 9, 2020, the Federal Reserve proposed the creation of the MSLP to implement certain of these recommendations. On June 15, 2020, the Federal Reserve Bank of Boston opened the MSLP for lender registration. The MSLP supports lending to small and medium-sized businesses that were in sound financial condition before the onset of the COVID-19 pandemic. The MSLP operates through five facilities: the Main Street New Loan Facility, the Main Street Priority Loan Facility, the Main Street Expanded Loan Facility, the Nonprofit Organization New Loan Facility, and the Nonprofit Organization Expanded Loan Facility. The Federal Reserve Bank of Boston maintains the legal forms and agreements for eligible borrowers and eligible lenders to participate in the MSLP, and continues to refine the MSLP’s operational infrastructure and facilities. The Bank has registered as a lender under the MSLP and continues to monitor developments related thereto.

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Temporary Regulatory Capital Relief related to Impact of CECL. Concurrent with enactment of the CARES Act, the federal bank regulatory authorities issued an interim final rule in late March 2020 that delayed the estimated impact on regulatory capital resulting from the adoption of CECL. Subsequently, on August 26, 2020, the federal banking agencies issued a final rule that allows institutions that adopt the CECL accounting standard in 2020 to mitigate CECL’s estimated effects on regulatory capital for two years. The CECL final rule is substantially similar to the interim final rule issued in March 2020 in connection with other CARES Act related regulatory relief. The final rule gives eligible institutions the option to mitigate the estimated capital effects of CECL for two years, followed by a three-year transition period. The Company has elected this capital relief option.

Supervisory Developments. On June 25, 2020, the Federal Reserve announced that it would take several actions to ensure large banks remain resilient despite the ongoing economic impact of COVID-19. Specifically, in the third quarter, the Federal Reserve will require large banks to preserve capital by suspending share repurchases, capping dividend payments, and allowing dividends according to a formula based on recent income. The Company and the Bank continue to monitor these developments, as well as other evolving supervisory responses to the COVID-19 pandemic, to assess what effect (if any) they will have, but do not anticipate any material impact at this time.

Modification of the Volcker Rule. Also on June 25, 2020, the Federal Reserve - along with the Commodity Futures Trading Commission, FDIC, the Office of the Comptroller of the Currency, and the SEC - issued a final rule modifying the Volcker Rule’s prohibition on banking entities investing in or sponsoring hedge funds or private equity funds (“covered funds”). The Volcker Rule generally prohibits banking entities from engaging in proprietary trading and from acquiring or retaining ownership interests in, sponsoring or having certain relationships with a hedge fund or private equity fund. The final rule modifies three areas of the Volcker Rule by: (1) streamlining the covered funds portion of the rule; (2) addressing the extraterritorial treatment of certain foreign funds; and (3) permitting banking entities to offer financial services and engage in other activities that do not raise concerns that the Volcker Rule was intended to address. The new rule became effective October 1, 2020. The Company and the Bank do not anticipate any material impact at this time from the new rule.

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Item 3.Quantitative and Qualitative Disclosures about Market Risk.

Market risk is the risk of loss in a financial instrument arising from adverse changes in market prices and rates, foreign currency exchange rates, commodity prices, and equity prices. The Company's market risk arises primarily from interest rate risk inherent in its lending, investing, and deposit taking activities. To that end, management actively monitors and manages the Company's interest rate risk exposure. The Company generally manages its interest rate sensitivity by evaluating re-pricing opportunities on its earning assets to those on its funding liabilities.

Management uses various asset/liability strategies to manage the re-pricing characteristics of the Company's assets and liabilities, all of which are designed to ensure that exposure to interest rate fluctuations is limited to within the Company's guidelines of acceptable levels of risk-taking. Hedging strategies, including the terms and pricing of loans and deposits and management of the deployment of its securities, are used to reduce mismatches in interest rate re-pricing opportunities of portfolio assets and their funding sources.

Interest rate risk is addressed by ALCO, which includes members of executive management, finance, and operations. ALCO monitors interest rate risk by analyzing the potential impact on the net EVE and net interest income from potential changes in interest rates and considers the impact of alternative strategies or changes in balance sheet structure. The Company manages its balance sheet in part to maintain the potential impact on EVE and net interest income within acceptable ranges despite changes in interest rates.

The Company's exposure to interest rate risk is reviewed at least quarterly by ALCO. Interest rate risk exposure is measured using interest rate sensitivity analysis to determine its change in both EVE and net interest income in the event of hypothetical changes in interest rates. If potential changes to EVE and net interest income resulting from hypothetical interest rate changes are not within the limits established by the BOD, the BOD may direct management to adjust the asset and liability mix to bring interest rate risk within Board-approved limits.

Net Interest Income Simulation. In order to measure interest rate risk at September 30, 2020, the Company used a simulation model to project changes in net interest income that result from forecasted changes in interest rates. This analysis calculates the difference between a baseline net interest income forecast using current yield curves that do not take into consideration any future anticipated rate hikes, compared to forecasted net income resulting from an immediate parallel shift in rates upward or downward, along with other scenarios directed by ALCO. The income simulation model includes various assumptions regarding re-pricing relationships for each of the Company's products. Many of the Company's assets are floating rate loans, which are assumed to re-price immediately and, proportional to the change in market rates, depending on their contracted index, including the impact of caps or floors. Some loans and investments contain contractual prepayment features (embedded options) and, accordingly, the simulation model incorporates prepayment assumptions. The Company's non-term deposit products re-price concurrently with interest rate changes taken by the Federal Open Market Committee.

This analysis indicates the impact of changes in net interest income for the given set of rate changes and assumptions. It assumes the balance sheet remains static and that its structure does not change over the course of the year. It does not account for all factors that could impact the Company's results, including changes by management to mitigate interest rate changes or secondary factors, such as changes to the Company's credit risk profile as interest rates change.

Furthermore, loan prepayment rate estimates and spread relationships change regularly. Interest rate changes create changes in actual loan prepayment speeds that will differ from the market estimates incorporated in this analysis. Changes that vary significantly from the modeled assumptions may have significant effects on the Company's actual net interest income.

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This simulation model assesses the changes in net interest income that would occur in response to an instantaneous and sustained increase or decrease (shock) in market interest rates. At September 30, 2020, our net interest income exposure for the next twelve months related to these hypothetical changes in market interest rates was within our current guidelines.

Sensitivity of Net Interest Income

	Parallel Shift Rate Scenario (change in basis points from Base)
	Down 100			Base		Up 100			Up 200
	(in thousands)
Interest Income	$	1,143,728		$	1,173,944	$	1,298,005		$	1,461,979
Interest Expense	44,820			68,285		136,442			204,790
Net Interest Income	$	1,098,908		$	1,105,659	$	1,161,563		$	1,257,189
% Change	(0.6)		%			5.1		%	13.7		%

	Interest Rate Ramp Scenario (change in basis points from Base)
	Down 100			Base		Up 100			Up 200
	(in thousands)
Interest Income	$	1,149,818		$	1,173,944	$	1,230,788		$	1,296,622
Interest Expense	54,229			68,285		83,030			97,032
Net Interest Income	$	1,095,589		$	1,105,659	$	1,147,758		$	1,199,590
% Change	(0.9)		%			3.8		%	8.5		%

Economic Value of Equity. The Company measures the impact of market interest rate changes on the NPV of estimated cash flows from its assets, liabilities, and off-balance sheet items, defined as EVE, using a simulation model. This simulation model assesses the changes in the market value of interest rate sensitive financial instruments that would occur in response to an instantaneous and sustained increase or decrease (shock) in market interest rates.

At September 30, 2020, the Company's EVE exposure related to these hypothetical changes in market interest rates was within the Company's current guidelines. The following table shows the Company's projected change in EVE for this set of rate shocks at September 30, 2020:

Economic Value of Equity 

	Interest Rate Scenario (change in basis points from Base)
	Down 100			Base		Up 100			Up 200			Up 300			Up 400
	(in thousands)
Assets	$	34,477,744		$	34,013,005	$	33,462,593		$	32,884,102		$	32,493,211		$	31,942,018
Liabilities	30,084,298			29,052,741		28,125,021			27,230,099			26,343,698			25,540,101
Net Present Value	$	4,393,446		$	4,960,264	$	5,337,572		$	5,654,003		$	6,149,513		$	6,401,917
% Change	(11.4)		%			7.6		%	14.0		%	24.0		%	29.1		%

The computation of prospective effects of hypothetical interest rate changes are based on numerous assumptions, including relative levels of market interest rates, asset prepayments, and deposit decay, and should not be relied upon as indicative of actual results. Further, the computations do not contemplate any actions the Company may undertake in response to changes in interest rates. Actual amounts may differ from the projections set forth above should market conditions vary from the underlying assumptions.

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Derivative Contracts. In the normal course of business, the Company uses derivative instruments to meet the needs of its customers and manage exposure to fluctuations in interest rates. The following table summarizes the aggregate notional amounts, market values, and terms of the Company’s derivative positions as of September 30, 2020 and December 31, 2019:

Outstanding Derivatives Positions

September 30, 2020					December 31, 2019
Notional		Net Value		Weighted Average Term (Years)	Notional		Net Value		Weighted Average Term (Years)
(dollars in thousands)
$	734,787	$	(88,876)	18.0	$	872,595	$	(53,667)	16.1

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Item 4.Controls and Procedures.

Evaluation of Disclosure Controls

Based on their evaluation as of the end of the period covered by this Quarterly Report on Form 10-Q, the CEO and CFO have concluded that the disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act) are effective to ensure that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act, as amended, is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms. Additionally, the Company's disclosure controls and procedures were also effective in ensuring that information required to be disclosed by the Company in the reports it files or is subject to under the Exchange Act is accumulated and communicated to the Company's management, including the CEO and CFO, to allow timely decisions regarding required disclosures.

Changes in Internal Control over Financial Reporting

There have not been any changes in the Company's internal control over financial reporting during the quarter ended September 30, 2020, which have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1.Legal Proceedings.

There are no material pending legal proceedings to which the Company is a party or to which any of its properties are subject. There are no material proceedings known to the Company to be contemplated by any governmental authority. From time to time, the Company is involved in a variety of litigation matters in the ordinary course of its business and anticipates that it will become involved in new litigation matters in the future.

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Item 1A.Risk Factors.

Item 1A. Risk Factors of the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 includes a discussion of the material risks and uncertainties that could adversely affect our business and impact our results of operations or financial condition. The information presented below updates, and should be read in conjunction with, the risk factors and information disclosed in the Annual Report on Form 10-K.

The COVID-19 pandemic and resulting adverse economic conditions have adversely impacted our business and results and could have a more material adverse impact on our business, financial condition and results of operations.

The ongoing COVID-19 global and national health emergency has caused significant disruption in the United States and international economies and financial markets. The spread of COVID-19 in the United States has caused illness, quarantines, cancellation of events and travel, business and school shutdowns, reduction in commercial activity and financial transactions, supply chain interruptions, increased unemployment, and overall economic and financial market instability. Many states, including Arizona, where we are headquartered, and California and Nevada, in which we have significant operations, declared states of emergency. These states, like many others, continue to be significantly impacted by the pandemic.

Although the Bank has continued operating, the COVID-19 pandemic has caused disruptions to our business and could cause material disruptions to our business and operations in the future. Impacts to our business have included the transition of a significant portion of our workforce to home locations, increases in costs due to additional health and safety precautions implemented at our branches, and an increase in draws on unfunded loan commitments and requests for forbearance and loan modifications. To the extent that commercial and social restrictions remain in place or increase, our expenses, delinquencies, foreclosures and credit losses may materially increase. In addition, the unprecedented nature of COVID-19 related disruptions heighten the inherent uncertainty of forecasting future economic conditions and their impact on our loan portfolio, and therefore increases the risk that the assumptions, judgments and estimates used to determine the appropriate allowance for future credit losses may prove to be incorrect, resulting in actual credit losses that exceed the Company’s recorded allowance.

Unfavorable economic conditions also may make it more difficult for us to maintain deposit levels and loan origination volume and to obtain additional financing. Furthermore, such conditions have and may continue to adversely impact accounting estimates that we use to determine our allowance and provision for credit losses. Such conditions also could impact the value of assets we carry on our balance sheet such as goodwill, and cause the value of collateral associated with our existing loans to decline. Further, certain debt and equity instruments may experience significant fluctuations in value due to market disruption, widening of credit spreads, and governmental purchase intervention. 

In addition, in March 2020, the Federal Reserve lowered the target range for the federal funds rate to a range from 0 to 0.25 percent, in part as a result of the pandemic. Sudden or unexpectedly large changes in interest rates could impact our ability to effectively manage our interest rate risk and could result in maturity imbalances in our assets and liabilities. A prolonged period of very low interest rates or an increase in interest rates that affects our borrowers' ability to repay loans could reduce our net interest income and have a material adverse impact on our cash flows.

While we have taken and are continuing to take actions to protect the safety and well-being of our employees and customers, no assurance can be given that the steps being taken will be deemed to be adequate or appropriate, nor can we predict the level of disruption which will occur to our employee's ability to perform their jobs or provide customer support and service. The continued or renewed spread of COVID-19 could negatively impact the availability of key personnel necessary to conduct our business, the business and operations of our third-party service providers who perform critical services for our business, or the businesses of many of our customers and borrowers. A sizable percentage of our workforce has returned to working in our office buildings, and it is possible that one or more members of our senior management or other key employees contracts the virus and is unable to perform their essential duties. At the same time, many of our employees and employees of companies we do business with continue to work remotely as a result of the pandemic, and the risk of cyber-attacks, breaches or similar events, whether through our systems or those of third parties on which we rely, therefore has increased.

Among the factors outside our control that are likely to affect the impact the COVID-19 pandemic will ultimately have on our business are:

•the pandemic’s course and severity;

•the direct and indirect results of the pandemic, such as recessionary economic trends, including with respect to employment, wages and benefits, commercial activity, consumer spending and real estate market values;

•political, legal and regulatory actions and policies in response to the pandemic, including the effects of restrictions on commerce and banking, such as moratoria and other suspensions of collections, foreclosures, and related obligations;

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•the timing, magnitude and effect of public spending, directly or through subsidies, its direct and indirect effects on commercial activity and incentives of employers and individuals to resume or increase employment, wages and benefits and commercial activity;

•the timing and availability of direct and indirect governmental support for various financial assets, including mortgage loans;

•the potential long-term impact on the tourism and hospitality industries, which could affect our hotel franchise finance business and portfolio;

•the long-term effect of the economic downturn on our intangible assets such as our deferred tax asset and goodwill;

•potential longer-term effects of increased government spending on the interest rate environment and borrowing costs for non-governmental parties;

•the ability of our employees and our third-party vendors to work effectively during the course of the pandemic;

•potential longer-term shifts toward mobile banking, telecommuting and telecommerce; and

•geographic variation in the severity and duration of the COVID-19 pandemic, including in states in which we operate physically such as Arizona, California and Nevada;

The ongoing COVID-19 pandemic has resulted in severe volatility in the financial markets and meaningfully lower stock prices for many companies, including our common stock. Depending on the extent and duration of the COVID-19 pandemic, the price of our common stock may continue to experience volatility and declines.

The Company is a participating lender in the PPP, a loan program administered through the SBA, that was created to help eligible businesses, organizations and self-employed persons fund their operational costs during the COVID-19 pandemic. Under this program, the SBA guarantees 100% of the amounts loaned under the PPP. Certain ambiguities in the laws, rules and guidance regarding the requirements and operation of the PPP may expose the Company to risks relating to noncompliance with the PPP. For instance, other financial institutions have experienced litigation related to their policies and procedures for accepting and processing applications for the PPP. Any financial liability, litigation costs or reputational damage caused by PPP related litigation could have a material adverse impact on our business, financial condition and results of operations. In addition, the Company may be exposed to credit risk on a PPP loan if a determination is made by the SBA that there is a deficiency in the manner in which the loan was originated, funded or serviced. In such a case, the SBA may deny its liability under the guaranty, reduce the amount of the guaranty, or, if it has already paid under the guaranty, seek recovery of any related loss from the Company.

We are continuing to monitor the COVID-19 pandemic and related risks, although the rapid development and fluidity of the situation precludes any specific prediction as to its ultimate impact on us. However, if the pandemic continues to spread or otherwise results in a continuation or worsening of the current economic and commercial environments, our business, financial condition, results of operations and cash flows, as well as our regulatory capital and liquidity ratios, could be materially adversely affected.

Item 2.Unregistered Sales of Equity Securities and Use of Proceeds.

Issuer Purchases of Equity Securities

The following table provides information about the Company's purchases of equity securities that are registered by the Company pursuant to Section 12 of the Exchange Act for the periods indicated:

	Total Number of Shares Purchased (1)(2)	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2)	Approximate Dollar Value of Shares That May Yet be Purchased Under the Plans or Programs
July 2020	13,158	$	36.16	—	$	178,392,414
August 2020	—	—		—	178,392,414
September 2020	1,240	31.21		—	178,392,414
Total	14,398	$	35.85	—	$	178,392,414

(1)    Shares purchased during the period outside of the publicly announced repurchase program were transferred to the Company from employees in satisfaction of minimum tax withholding obligations associated with the vesting of restricted stock awards during the period.

(2)    The Company's common stock repurchase program was renewed through December 2020, authorizing the Company to repurchase up to $250.0 million of its outstanding common stock. Due to the COVID-19 pandemic, effective as of April 17, 2020, the Company has temporarily suspended its stock repurchases.

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Item 5.Other Information

Not applicable.

106

Item 6.Exhibits

EXHIBITS

3.1	Amended and Restated Certificate of Incorporation, effective as of May 19, 2015 (incorporated by reference to Exhibit 3.1 of Western Alliance's Form 10-K filed with the SEC on March 1, 2019.
3.2	Amended and Restated Bylaws of Western Alliance, effective as of May 19, 2015 (incorporated by reference to Exhibit 3.2 of Western Alliance's Form 8-K filed with the SEC on May 22, 2015).
3.3	Articles of Conversion, as filed with the Nevada Secretary of State on May 29, 2014 (incorporated by reference to Exhibit 3.1 of Western Alliance’s Form 8-K filed with the SEC on June 3, 2014).
3.4	Certificate of Conversion, as filed with the Delaware Secretary of State on May 29, 2014 (incorporated by reference to Exhibit 3.2 of Western Alliance’s Form 8-K filed with the SEC on June 3, 2014).
31.1*	CEO Certification Pursuant Rule 13a-14(a)/15d-14(a).
31.2*	CFO Certification Pursuant Rule 13a-14(a)/15d-14(a).
32**	CEO and CFO Certification Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to section 906 of the Sarbanes Oxley Act of 2002.
101	Interactive data files pursuant to Rule 405 of Regulation S-T: (i) the Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019, (ii) the Consolidated Income Statements for the three months ended September 30, 2020 and September 30, 2019 and nine months ended September 30, 2020 and 2019, (iii) the Consolidated Statements of Comprehensive Income for the three months ended September 30, 2020 and September 30, 2019 and nine months ended September 30, 2020 and 2019, (iv) the Consolidated Statements of Stockholders’ Equity for the three months ended September 30, 2020 and September 30, 2019 and the nine months September 30, 2020 and 2019, (v) the Consolidated Statements of Cash Flows for the nine months ended September 30, 2020 and 2019, and (vi) the Notes to unaudited Consolidated Financial Statements. (Pursuant to Rule 406T of Regulation S-T, this information is deemed furnished and not filed for purposes of Sections 11 and 12 of the Securities Act of 1933 and Section 18 of the Securities Exchange Act of 1934.) (Filed herewith).
104	The cover page of Western Alliance Bancorporation’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2020, formatted in Inline XBRL (contained in Exhibit 101).

*    Filed herewith.

**     Furnished herewith.

±    Management contract or compensatory arrangement.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	WESTERN ALLIANCE BANCORPORATION
October 30, 2020	By:	/s/ Kenneth A. Vecchione
		Kenneth A. Vecchione
		President and Chief Executive Officer
October 30, 2020	By:	/s/ Dale Gibbons
		Dale Gibbons
		Vice Chairman and Chief Financial Officer
October 30, 2020	By:	/s/ J. Kelly Ardrey Jr.
		J. Kelly Ardrey Jr.
		Chief Accounting Officer

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EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Kenneth A. Vecchione, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Western Alliance Bancorporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

		/s/ Kenneth A. Vecchione
		Kenneth A. Vecchione
		President and Chief Executive Officer
Date:	October 30, 2020	Western Alliance Bancorporation

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Dale Gibbons, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Western Alliance Bancorporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

		/s/ Dale Gibbons
		Dale Gibbons
		Vice Chairman and Chief Financial Officer
Date:	October 30, 2020	Western Alliance Bancorporation

EX-32

Exhibit 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

This certification is given by the undersigned Chief Executive Officer and Chief Financial Officer of Western Alliance Bancorporation (the “Registrant”) pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Each of the undersigned hereby certifies, with respect to the Registrant's quarterly report on Form 10-Q for the quarter ended September 30, 2020, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), that, to each of their knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date:	October 30, 2020	/s/ Kenneth A. Vecchione
		President and Chief Executive Officer
		Western Alliance Bancorporation
Date:	October 30, 2020	/s/ Dale Gibbons
		Vice Chairman and Chief Financial Officer
		Western Alliance Bancorporation

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Oct. 26, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	001-32550
Entity Registrant Name	WESTERN ALLIANCE BANCORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	88-0365922
Entity Address, Address Line One	One E. Washington Street, Suite 1400
Entity Address, City or Town	Phoenix
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85004
City Area Code	602
Local Phone Number	389-3500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		100,829,164
Entity Central Index Key	0001212545
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Common Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.0001 Par Value
Trading Symbol	WAL
Security Exchange Name	NYSE
Subordinated Debt [Member]
Entity Information [Line Items]
Title of 12(b) Security	6.25% Subordinated Debentures due 2056
Trading Symbol	WALA
Security Exchange Name	NYSE

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020		Sep. 30, 2020		Dec. 31, 2019
Assets:
Cash and due from banks	$ 163,893		$ 163,893		$ 185,977
Interest-bearing deposits in other financial institutions	1,254,842		1,254,842		248,619
Cash, cash equivalents, and restricted cash	1,418,735		1,418,735		434,596
Available-for-sale Securities	3,975,225	[1]	3,975,225	[1]	3,346,310	[2]
Debt Securities, Held-to-maturity	504,477		504,477		485,107
Debt Securities, Held-to-maturity, Allowance for Credit Loss	(5,964)		(5,964)		0
Debt Securities, Held-to-maturity, Net	498,513		498,513		485,107
Investment securities - equity	160,561	[1]	160,561	[1]	138,701	[2]
Investments in restricted stock, at cost	66,843		66,843		66,509
Loans Receivable Held-for-sale, Amount	20,764		20,764		21,803
Loans:
Loans and Leases Receivable, Net of Deferred Income	25,993,254		25,993,254		21,101,493
Less: Allowance for credit losses	(310,560)		(310,560)		(167,797)
Net loans held for investment	25,682,694		25,682,694		20,933,696
Premises and equipment, net	128,256		128,256		125,838
Operating Lease, Right-of-Use Asset	71,393		71,393		72,558
Bank owned life insurance	175,478		175,478		174,046
Goodwill and intangible assets, net	298,987		298,987		297,608
Deferred Income Tax Assets, Net	46,645		46,645		18,025
Investments in LIHTC and renewable energy	414,305		414,305		409,365
Other assets	377,107		377,107		297,786
Total assets	33,335,506		33,335,506		26,821,948
Deposits:
Non-interest-bearing demand	13,013,014		13,013,014		8,537,905
Interest-bearing	15,830,382		15,830,382		14,258,588
Total deposits	28,843,396		28,843,396		22,796,493
Customer repurchase agreements	19,688		19,688		16,675
Other borrowings	10,000		10,000		0
Qualifying debt	618,772		618,772		393,563
Operating Lease, Liability	78,613		78,613		78,112
Other liabilities	540,991		540,991		520,357
Total liabilities	30,111,460		30,111,460		23,805,200
Commitments and Contingencies
Common Stock, Shares, Issued	102,993,777		102,993,777		104,527,544
Common stock, shares authorized	200,000,000		200,000,000		200,000,000
Stockholders’ equity:
Common Stock, Value, Issued	$ 10		$ 10		$ 10
Treasury Stock, Shares	2,168,437		2,168,437		2,003,873
Treasury Stock, Value	$ (71,098)		$ (71,098)		$ (62,728)
Additional paid in capital	1,383,537		1,383,537		1,374,141
Accumulated other comprehensive income	78,585		78,585		25,008
Retained earnings	1,833,012		1,833,012		1,680,317
Total stockholders’ equity	3,224,046		3,224,046		3,016,748
Total liabilities and stockholders’ equity	33,335,506		33,335,506		$ 26,821,948
Dividends, Common Stock, Cash	$ (25,208)		$ (76,028)

[1] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

[2] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale, Amortized Cost	$ 3,876,586	$ 3,317,928
Debt Securities, Held-to-maturity, Fair Value	$ 548,140	$ 516,261
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	102,993,777	104,527,544
Treasury Stock, Value	$ 71,098	$ 62,728

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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest income:
Loans, including fees	$ 276,623	$ 278,932	$ 843,085	$ 808,099
Investment securities	26,323	28,928	79,778	84,929
Dividends	1,397	1,289	4,305	4,452
Other	500	6,459	3,129	12,144
Total interest income	304,843	315,608	930,297	909,624
Interest expense:
Deposits	12,215	43,354	59,736	121,030
Other borrowings	5	34	75	1,344
Qualifying debt	7,872	5,785	17,833	17,898
Other	13	13	495	913
Total interest expense	20,105	49,186	78,139	141,185
Net interest income	284,738	266,422	852,158	768,439
Provision for credit losses	14,661	3,803	157,837	15,303
Net interest income after provision for credit losses	270,077	262,619	694,321	753,136
Non-interest income:
Service charges and fees	5,913	5,888	17,447	17,121
Card Income	1,873	1,729	4,768	5,195
Foreign currency income	1,755	1,321	4,242	3,564
Income from bank owned life insurance	1,345	979	8,977	2,938
Income from equity instruments	1,186	3,742	6,263	6,619
Lending related income and gains (losses) on sale of loans, net	705	539	2,072	1,343
Sales of investment securities	0	3,152	230	3,152
Unrealized gains (losses) on assets measured at fair value, net	5,882	222	(986)	4,628
Other income	1,947	1,869	3,972	4,509
Total non-interest income	20,606	19,441	46,985	49,069
Non-interest expense:
Salaries and employee benefits	78,757	70,978	220,455	205,328
Legal, professional, and directors' fees	10,034	8,248	31,105	26,885
Occupancy	9,426	8,263	25,752	24,251
Data processing	8,864	7,095	26,044	20,563
Deposit costs	3,246	11,537	14,098	24,930
Insurance	3,064	3,071	9,506	8,691
Loan and repossessed asset expenses	1,771	1,953	5,280	5,419
Business development	950	1,443	4,062	4,972
Marketing	848	842	2,621	2,640
Card expense	505	548	1,631	1,892
Intangible amortization	373	387	1,120	1,161
Net loss (gain) on sales / valuations of repossessed and other assets	123	3,379	(1,335)	2,856
Other expense	6,131	8,408	19,033	22,691
Total non-interest expense	124,092	126,152	359,372	352,279
Income before provision for income taxes	166,591	155,908	381,934	449,926
Income Tax Expense (Benefit)	30,822	28,533	68,929	78,819
Net income	$ 135,769	$ 127,375	$ 313,005	$ 371,107
Earnings per share:
Basic	$ 1.36	$ 1.25	$ 3.12	$ 3.60
Diluted	$ 1.36	$ 1.24	$ 3.11	$ 3.59
Weighted average number of common shares outstanding:
Basic	99,850	102,041	100,322	103,024
Diluted	100,059	102,451	100,574	103,468
Dividends declared per common share	$ 0.25	$ 0.25	$ 0.75	$ 0.25

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 135,769	$ 127,375	$ 313,005	$ 371,107
Other comprehensive income, net:
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax	7,592	11,014	53,176	78,314
Unrealized gain on AFS securities, net of tax effect of $(2,520), $(3,592), $(17,310), $(25,523), respectively	(2,520)	(3,592)	(17,310)	(25,523)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	(3)	(18)	(296)	(53)
Unrealized (loss) on SERP, net of tax effect of $1, $6, $94, $18, respectively	1	6	94	18
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax	(2,681)	(598)	(871)	(6,664)
Unrealized (loss) gain on junior subordinated debt, net of tax effect of $874, $(196)$, $(285), $2,173, respectively	(874)	(196)	(285)	(2,173)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	(2,376)	(174)	(2,376)
Realized (gain) on sale of AFS securities included in income, net of tax effect of $0, $776, $56, $776, respectively	0	776	56	776
Net other comprehensive income	4,908	9,218	53,577	69,221
Comprehensive income	$ 140,677	$ 136,593	$ 366,582	$ 440,328

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands		Total	Common Stock [Member]	Additional Paid in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Beginning balance, shares at Dec. 31, 2018			104,949,000
Beginning balance at Dec. 31, 2018		$ 2,613,734	$ 10	$ 1,417,724	$ 53,083	$ (33,622)	$ 1,282,705
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		371,107					371,107
Exercise of stock options, shares			2,000
Exercise of stock options		55		55
Restricted stock grants, net, shares			(631,000)
Restricted stock grants, net		19,783		19,783
Treasury Stock, Shares, Acquired	[1]		209,000
Treasury Stock, Value, Acquired, Cost Method	[1]	$ 9,582			9,582
Stock Repurchased and Retired During Period, Shares		(2,733,603)	(2,734,000)
Stock Repurchased and Retired During Period, Value		$ (115,571)		(69,371)			(46,200)
Dividends, Common Stock, Cash		(25,684)					(25,684)
Other comprehensive (loss) income, net		69,221				69,221
Ending balance, shares at Sep. 30, 2019			102,639,000
Ending Balance at Sep. 30, 2019		2,923,063	$ 10	1,368,191	62,665	35,599	1,581,928
Beginning balance, shares at Jun. 30, 2019			103,654,000
Beginning balance at Jun. 30, 2019		2,851,264	$ 10	1,372,037	61,134	26,381	1,513,970
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		127,375					127,375
Exercise of stock options, shares			1,000
Exercise of stock options		19		19
Restricted stock grants, net, shares			(17,000)
Restricted stock grants, net		6,060		6,060
Treasury Stock, Shares, Acquired	[1]		33,000
Treasury Stock, Value, Acquired, Cost Method	[1]	$ 1,531			1,531
Stock Repurchased and Retired During Period, Shares		(1,000,000)	(1,000,000)
Stock Repurchased and Retired During Period, Value		$ (43,658)		(9,925)			(33,733)
Dividends, Common Stock, Cash							(25,684)
Other comprehensive (loss) income, net		9,218				9,218
Ending balance, shares at Sep. 30, 2019			102,639,000
Ending Balance at Sep. 30, 2019		2,923,063	$ 10	1,368,191	62,665	35,599	1,581,928
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Retained earnings		1,680,317
Beginning balance, shares at Dec. 31, 2019			102,524,000
Beginning balance at Dec. 31, 2019		3,016,748	$ 10	1,374,141	62,728	25,008	1,680,317
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		313,005					313,005
Exercise of stock options, shares			9,000
Exercise of stock options		170		170
Restricted stock grants, net, shares			(523,000)
Restricted stock grants, net		21,560		21,560
Treasury Stock, Shares, Acquired	[1]		165,000
Treasury Stock, Value, Acquired, Cost Method	[1]	$ 8,370			8,370
Stock Repurchased and Retired During Period, Shares		(2,066,479)	(2,066,000)
Stock Repurchased and Retired During Period, Value		$ (71,669)		(12,334)			(59,335)
Dividends, Common Stock, Cash		(76,028)					(76,028)
Other comprehensive (loss) income, net		53,577				53,577
Ending balance, shares at Sep. 30, 2020			100,825,000
Ending Balance at Sep. 30, 2020		3,224,046	$ 10	1,383,537	71,098	78,585	1,833,012
Beginning balance, shares at Jun. 30, 2020			100,849,000
Beginning balance at Jun. 30, 2020		3,102,414	$ 10	1,376,859	70,583	73,677	1,722,451
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		135,769					135,769
Exercise of stock options, shares			2,000
Exercise of stock options		73		73
Restricted stock grants, net, shares			(12,000)
Restricted stock grants, net		6,605		6,605
Treasury Stock, Shares, Acquired	[1]		14,000
Treasury Stock, Value, Acquired, Cost Method	[1]	515			515
Dividends, Common Stock, Cash		(25,208)					(25,208)
Other comprehensive (loss) income, net		4,908				4,908
Ending balance, shares at Sep. 30, 2020			100,825,000
Ending Balance at Sep. 30, 2020		3,224,046	$ 10	$ 1,383,537	$ 71,098	$ 78,585	$ 1,833,012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Retained earnings		$ 1,833,012

[1] Share amounts represent Treasury Shares, see "Note 1. Summary of Significant Accounting Policies" for further discussion.

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income	$ 313,005	$ 371,107
Adjustments to reconcile net income to cash provided by operating activities:
Provision for credit losses	157,837	15,303
Depreciation and amortization	17,122	14,904
Stock-based compensation	21,560	19,783
Deferred income taxes	(37,414)	5,757
Amortization of net premiums for investment securities	19,015	11,031
Amortization of tax credit investments	34,244	33,551
Amortization of operating lease right of use asset	8,874	7,704
Amortization of net deferred loan fees and net purchase premiums	(34,085)	(31,838)
Income from bank owned life insurance	3,370
Income from bank owned life insurance	(8,977)	(2,938)
(Gains) / Losses on:
Sales of investment securities	(230)	(3,152)
Assets measured at fair value, net	986	(4,628)
Sale of loans	0	(530)
BOLI	5,607	0
Sales / valuations of repossessed and other assets, net	(1,335)	2,856
Changes in other assets and liabilities, net	(40,486)	94,535
Net cash provided by operating activities	450,116	534,505
Investment securities - AFS
Purchases	(1,720,604)	(746,445)
Principal pay downs and maturities	1,014,380	453,307
Proceeds from sales	156,629	150,377
Debt Securities, Held-to-maturity [Abstract]
Purchases	106,772	100,460
Principal pay downs and maturities	16,894	18,206
Proceeds from sales	0	10,000
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Purchases	(31,075)	(10,662)
Redemption of principal (reinvestment of dividends)	7,003	4,535
Purchase of investment tax credits	(103,365)	(88,074)
Proceeds from (purchase of) SBIC investments	(1,463)	5,298
Purchase of money market investments, net	0	7
Proceeds from bank owned life insurance, net	6,011	0
Purchase of restricted stock	334	244
Net increase in loans	(4,806,138)	(2,445,769)
Purchase of premises, equipment, and other assets, net	(33,103)	(15,282)
Proceeds from sale of other real estate owned and repossessed assets, net	7,073	628
Net cash used in investing activities	(5,591,938)	(2,775,174)
Cash flows from financing activities:
Net increase in deposits	6,046,903	3,263,367
Net proceeds from issuance of subordinated debt	221,942	0
Net increase (decrease) in borrowings	13,013	(498,429)
Proceeds from exercise of common stock options	170	55
Cash paid for tax withholding on vested restricted stock	8,370	9,582
Common stock repurchases	71,669	115,571
Cash dividends paid on common stock	76,028	25,684
Net cash provided by financing activities	6,125,961	2,614,156
Net increase in cash, cash equivalents, and restricted cash	984,139	373,487
Cash, cash equivalents, and restricted cash at beginning of period	434,596	498,572
Cash, cash equivalents, and restricted cash at end of period	1,418,735	872,059
Cash paid (received) during the period for:
Interest	87,134	144,680
Income Taxes Paid, Net	$ 37,069	$ (26,228)

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Nature of operation

WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.

WAB operates the following full-service banking divisions: ABA, BON, FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services. In addition, the Company has two non-bank subsidiaries: LVSP, which held and managed certain OREO properties, and CSI, a captive insurance company formed and licensed under the laws of the State of Arizona and established as part of the Company's overall enterprise risk management strategy.

Basis of presentation

The accounting and reporting policies of the Company are in accordance with GAAP and conform to practices within the financial services industry. The accounts of the Company and its consolidated subsidiaries are included in the Consolidated Financial Statements.

Recent accounting pronouncements

Convertible Debt and Derivatives and Hedging

In August 2020, the FASB issued guidance within ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40). The amendments in this update affect entities that issue convertible instruments and/or contracts indexed to and potentially settled in an entity’s own equity. The new ASU simplifies the convertible accounting framework through elimination of the beneficial conversion and cash conversion accounting models for convertible instruments. It also amends the accounting for certain contracts in an entity’s own equity that are currently accounted for as derivatives because of specific settlement provisions. In addition, the new guidance modifies how particular convertible instruments and certain contracts that may be settled in cash or shares impact the diluted EPS computation. The amendments to Subtopics 470 and 815 are effective for interim and annual reporting periods beginning after December 15, 2021 and are not expected to have a material impact on the Company’s Consolidated Financial Statements.

Income Taxes

In December 2019, the FASB issued guidance within ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in ASU 2019-12 are intended to reduce the cost and complexity of applying ASC 740. The amendments that are applicable to the Company address: 1) franchise and other taxes partially based on income; 2) step-up in basis of goodwill in a business combination; 3) allocation of tax expense in separate entity financial statements; and 4) interim recognition of enactment of tax laws or rate changes. The amendments to Topic 740 are effective for interim and annual reporting periods beginning after December 15, 2020 and are not expected to have a material impact on the Company’s Consolidated Financial Statements.

Recently adopted accounting guidance

Measurement of Credit Losses on Financial Instruments

In June 2016, the FASB issued guidance within ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The new standard significantly changes the impairment model for most financial assets that are measured at amortized cost, including off-balance sheet credit exposures, from an incurred loss model to an expected loss model. The amendments in ASU 2016-13 to Topic 326, Financial Instruments - Credit Losses, require that an organization measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The ASU also requires enhanced disclosures, including qualitative and quantitative disclosures that provide additional information about the amounts recorded in the financial statements. Additionally, the ASU amends the accounting for credit losses on AFS debt securities and purchased financial assets with credit deterioration.

The Company adopted the amendments within ASU 2016-13 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. The Company's financial results for reporting periods

beginning after January 1, 2020 are presented in accordance with ASC 326, while prior-period amounts continue to be reported in accordance with legacy GAAP. The Company recorded a cumulative effect adjustment to retained earnings, which resulted in a total decrease to retained earnings of $24.9 million as of January 1, 2020. This adjustment was due primarily to expected total losses under the new model in the Company's loan portfolio and, to a lesser extent, its off-balance sheet credit exposures.

The Company applied the prospective transition approach for loans purchased with credit deterioration that were previously classified as purchased credit impaired and previously accounted for under ASC 310-30. In accordance with the new standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. As of January 1, 2020, the amortized cost basis of the PCD loans was adjusted to reflect an allowance for credit losses of $3.3 million. The remaining noncredit discount (based on the adjusted amortized cost basis) related to PCD loans of $1.1 million will be accreted into interest income at the loan's effective interest rate as of January 1, 2020. The Company has elected not to maintain its pools of loans accounted for under ASC 310-30.

The Company applied the prospective transition approach for debt securities for which other-than-temporary impairment had been recognized prior to January 1, 2020. As a result, the amortized cost basis remains the same before and after the effective date. The effective interest rate on these debt securities was not changed. Recoveries of amounts previously written off relating to improvements in cash flows after January 1, 2020 will be recorded in earnings when received.

The following table summarizes the estimated allowance for credit losses related to financial assets and off-balance sheet credit exposures and the corresponding impacts on the deferred tax asset and retained earnings upon adoption of ASC 326:

	January 1, 2020
	Pre-ASC 326 Adoption		Post-ASC 326 Adoption		Impact of ASC 326 Adoption
	(in thousands)
Assets:
Allowance for credit losses on HTM securities	$	—	$	2,646	$	2,646
Allowance for credit losses on loans	167,797		186,925		19,128
Deferred tax asset	18,025		26,675		8,650
Liabilities:
Off-balance sheet credit exposures	$	8,955	$	24,044	$	15,089
Equity:
Retained earnings	$	1,680,317	$	1,655,370	$	(24,947)

Management has elected to take advantage of the capital relief option that delays the estimated impact of the adoption of ASC 326 on regulatory capital by up to two years, with a three-year transition period to phase out the cumulative benefit to regulatory capital provided during the two-year delay.

In April 2019, the FASB issued guidance within ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. The amendments in ASU 2019-04 clarify or correct the guidance in these Topics. With respect to Topic 326, ASU 2019-04 addresses a number of issues as it relates to the CECL standard including consideration of accrued interest, recoveries, variable-rate financial instruments, prepayments, and extension and renewal options, among other things, in the measurement of expected credit losses. The amendments to Topic 326 were adopted concurrently with ASU 2016-13 and did not have a significant impact on the Company’s Consolidated Financial Statements. With respect to Topic 815, Derivatives and Hedging, ASU 2019-04 clarifies issues related to partial-term hedges, hedged debt securities, and transitioning from a quantitative method of assessing hedge effectiveness to a more simplified method. The Company does not have partial-term hedges or any hedged debt securities and the transition issues discussed in the ASU 2019-04 are not applicable to the Company. Accordingly, the amendments to Topic 815 did not have an impact on the Company's Consolidated Financial Statements. With respect to Topic 825, Financial Instruments, on recognizing and measuring financial instruments, ASU 2019-04 addresses: 1) the scope of the guidance; 2) the requirement for remeasurement under ASC 820 when using the measurement alternative for equity securities without readily determinable fair values; 3) certain disclosure requirements; and 4) which equity securities have to be remeasured at historical exchange rates. The amendments to Topic 825 were effective January 1, 2020 and did not have a material impact on the Company’s Consolidated Financial Statements.

In May 2019, the FASB issued guidance within ASU 2019-05, Financial Instruments - Credit Losses, to provide entities with an option to irrevocably elect the fair value option for eligible financial assets measured at amortized cost. The election is to be applied on an instrument-by-instrument basis upon adoption of Topic 326 and is not available for either AFS or HTM debt securities. The amendments in ASU 2019-05 should be applied on a modified-retrospective basis through a cumulative-effect

adjustment to the opening balance of retained earnings as of the date that an entity adopts the amendments in ASU 2016-13. The Company did not elect this fair value option as part of its adoption of ASU 2016-13 on January 1, 2020.

In November 2019, the FASB issued guidance within ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments—Credit Losses. The amendments in ASU 2019-11 clarify or address specific issues about certain aspects of the amendments in ASU 2016-13. These issues include measurement and reporting requirements related to: 1) the allowance for credit losses for purchased assets with credit deterioration; 2) prepayment assumptions on existing troubled debt restructurings; 3) extension of disclosure relief for accrued interest receivable balances; and 4) expected credit losses on collateralized financial assets. The adoption of ASU 2019-11 is concurrent with ASU 2016-13 and, adoption of these amendments on January 1, 2020, did not have a significant impact on the Company's Consolidated Financial Statements.

Fair Value Measurements

In August 2018, the FASB issued guidance within ASU 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. The amendments within ASU 2018-13 remove, modify, and supplement the disclosure requirements for fair value measurements. Disclosure requirements that were removed include: 1) the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy; 2) the policy for timing of transfers between levels; and 3) the valuation processes for Level 3 fair value measurements. The amendments clarify that the measurement uncertainty disclosure is intended to communicate information about the uncertainty in measurement as of the reporting date. Additional disclosure requirements include: 1) the changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period; and 2) the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. With the exception of the above additional disclosure requirements, which will be applied prospectively, all other amendments should be applied retrospectively to all periods presented upon their effective date. The amendments in this ASU did not have a significant impact on the Company's Consolidated Financial Statements.

Internal-Use Software

In August 2018, the FASB issued guidance within ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40). The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). Accordingly, the amendments in this Update require an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The amendments in this Update also require that the capitalized implementation costs of a hosting arrangement that is a service contract be expensed over the term of the hosting arrangement. Presentation requirements include: 1) expense related to the capitalized implementation costs should be presented in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement; 2) payments for capitalized implementation costs in the statement of cash flows should be classified in the same manner as payments made for fees associated with the hosting element; and 3) capitalized implementation costs in the statement of financial position should be presented in the same line item that a prepayment for the fees of the associated hosting arrangement would be presented. The adoption of this guidance did not have a significant impact on the Company's Consolidated Financial Statements.

Reference Rate Reform

In March 2020, the FASB issued guidance within ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, in response to the scheduled discontinuation of LIBOR on December 31, 2021. The amendments in this Update provide optional guidance designed to provide relief from the accounting analysis and impacts that may otherwise be required for modifications to agreements (e.g., loans, debt securities, derivatives, borrowings) necessitated by reference rate reform.

The following optional expedients for applying the requirements of certain Topics or Industry Subtopics in the Codification are permitted for contracts that are modified because of reference rate reform and that meet certain scope guidance: 1) modifications of contracts within the scope of Topics 310, Receivables, and 470, Debt, should be accounted for by prospectively adjusting the effective interest rate; 2) modifications of contracts within the scope of Topic 842, Leases, should be accounted for as a continuation of the existing contracts with no reassessments of the lease classification and the discount rate or remeasurements of lease payments that otherwise would be required under this Topic for modifications not accounted for as separate contracts; 3) modifications of contracts do not require an entity to reassess its original conclusion about whether that contract contains an embedded derivative that is clearly and closely related to the economic characteristics and risks of the host contract under Subtopic 815-15, Derivatives and Hedging- Embedded Derivatives; and 4) for other Topics or Industry Subtopics in the Codification, the amendments in this Update also include a general principle that permits an entity to consider

contract modifications due to reference rate reform to be an event that does not require contract remeasurement at the modification date or reassessment of a previous accounting determination. An entity may make a one-time election to sell, transfer, or both sell and transfer debt securities classified as held to maturity that reference a rate affected by reference rate reform and that are classified as held to maturity before January 1, 2020.

The amendments in this Update are effective for all entities as of March 12, 2020 through December 31, 2022.

Use of estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management's estimates and judgments are ongoing and are based on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities, as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from those estimates and assumptions used in the Consolidated Financial Statements and related notes. Material estimates that are susceptible to significant changes in the near term, particularly to the extent that economic conditions worsen or persist longer than expected in an adverse state, relate to: the determination of the allowance for credit losses; certain assets and liabilities carried at fair value; and accounting for income taxes.

Principles of consolidation

As of September 30, 2020, WAL has the following significant wholly-owned subsidiaries: WAB and eight unconsolidated subsidiaries used as business trusts in connection with the issuance of trust-preferred securities.

The Bank has the following significant wholly-owned subsidiaries: WABT, which holds certain investment securities, municipal and nonprofit loans, and leases; WA PWI, which holds interests in certain limited partnerships invested primarily in low income housing tax credits and small business investment corporations; Helios Prime, which holds interests in certain limited partnerships invested in renewable energy projects; and BW Real Estate, Inc., which operates as a real estate investment trust and holds certain of WAB's real estate loans and related securities.

The Company does not have any other significant entities that should be consolidated. All significant intercompany balances and transactions have been eliminated in consolidation.

Reclassifications

Certain amounts reported in prior periods may have been reclassified in the Consolidated Financial Statements to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.

Interim financial information

The accompanying Unaudited Consolidated Financial Statements as of and for the three and nine months ended September 30, 2020 and 2019 have been prepared in condensed format and, therefore, do not include all of the information and footnotes required by GAAP for complete financial statements. These statements have been prepared on a basis that is substantially consistent with the accounting principles applied to the Company's audited Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2019.

The information furnished in these interim statements reflects all adjustments that are, in the opinion of management, necessary for a fair statement of the results for each respective period presented. Such adjustments are of a normal, recurring nature. The results of operations in the interim statements are not necessarily indicative of the results that may be expected for any other quarter or for the full year. The interim financial information should be read in conjunction with the Company's audited Consolidated Financial Statements.

Investment securities

Investment securities include debt and equity securities. Debt securities may be classified as HTM, AFS, or trading. The appropriate classification is initially decided at the time of purchase. Securities classified as HTM are those debt securities that the Company has both the intent and ability to hold to maturity regardless of changes in market conditions, liquidity needs, or general economic conditions. The sale of an HTM security within three months of its maturity date or after the majority of the principal outstanding has been collected is considered a maturity for purposes of classification and disclosure. Securities classified as AFS are securities that the Company intends to hold for an indefinite period of time, but not necessarily to

maturity. Any decision to sell a security classified as AFS would be based on various factors, including significant movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, decline in credit quality, and regulatory capital considerations.

HTM securities are carried at amortized cost. AFS securities are carried at their estimated fair value, with unrealized holding gains and losses reported in other comprehensive income, net of tax. When AFS debt securities are sold, the unrealized gains or losses are reclassified from OCI to non-interest income. Trading securities are carried at their estimated fair value, with changes in fair value reported in earnings as part of non-interest income.

Equity securities are carried at their estimated fair value, with changes in fair value reported in earnings as part of non-interest income.

Interest income is recognized based on the coupon rate and includes the amortization of purchase premiums and the accretion of purchase discounts. Premiums and discounts on investment securities are generally amortized or accreted over the contractual life of the security using the interest method. For the Company's mortgage-backed securities, amortization or accretion of premiums or discounts are adjusted for anticipated prepayments. Gains and losses on the sale of investment securities are recorded on the trade date and determined using the specific identification method.

A debt security is placed on nonaccrual status at the time its principal or interest payments become 90 days past due. Interest accrued but not received for a security placed on nonaccrual is reversed against interest income.

Allowance for credit losses on investment securities

On January 1, 2020, the Company adopted the amendments within ASU 2016-13, which replaces the legacy US GAAP OTTI model with a credit loss model. For discussion of the former OTTI methodology, refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2019. The credit loss model under ASC 326-20, applicable to HTM debt securities, requires recognition of lifetime expected credit losses through an allowance account at the time the security is purchased. The Company measures expected credit losses on its HTM debt securities on a collective basis by major security type. The Company's HTM securities portfolio consists of low income housing tax-exempt bonds, which share similar risk characteristics with the Company's CRE, non-owner occupied or construction and land loan pools, given the similarity in underlying assets or collateral. Accordingly, expected credit losses on HTM securities are estimated using the same models and approaches as these loan pools, which utilize risk parameters (probability of default, loss given default, and exposure at default) in the measurement of expected credit losses. The historical data used to estimate probability of default and severity of loss in the event of default is derived or obtained from internal and external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical losses. Accrued interest receivable on the HTM securities, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses.

The credit loss model under ASC 326-30, applicable to AFS debt securities, requires recognition of credit losses through an allowance account, but retains the concept from the OTTI model that credit losses are recognized once securities become impaired. For AFS debt securities, a decline in fair value due to credit loss results in recognition of an allowance for credit losses. Impairment may result from credit deterioration of the issuer or collateral underlying the security. The assessment of determining if a decline in fair value resulted from a credit loss is performed at the individual security level. Among other factors, the Company considers: 1) the extent to which the fair value is less than the amortized cost basis; 2) the financial condition and near term prospects of the issuer, including consideration of relevant financial metrics or ratios of the issuer; 3) any adverse conditions related to an industry or geographic area of an issuer; 4) any changes to the rating of the security by a rating agency; and 5) any past due principal or interest payments from the issuer. If an assessment of the above factors indicates that a credit loss exists, the Company records an allowance for credit losses for the excess of the amortized cost basis over the present value of cash flows expected to be collected, limited to the amount that the security's fair value is less than its amortized cost basis. Subsequent changes in the allowance for credit losses are recorded as a provision for (or reversal of) credit loss expense. Interest accruals and amortization and accretion of premiums and discounts are suspended when the credit loss is recognized in earnings. Any interest received after the security has been placed on nonaccrual status is recognized on a cash basis. Accrued interest receivable on AFS securities, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses.

For each AFS security in an unrealized loss position, the Company also considers: 1) its intent to retain the security until anticipated recovery of the security's fair value; and 2) whether it is more-likely-than not that the Company would be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the debt security is written down to its fair value and the write-down is charged against the allowance for credit losses with any incremental impairment recorded in earnings.

Writeoffs are made through reversal of the allowance for credit losses and direct writeoff of the amortized cost basis of the AFS security. The Company considers the following events to be indicators that a writeoff should be taken: 1) bankruptcy of the issuer; 2) significant adverse event(s) affecting the issuer in which it is improbable for the issuer to make its remaining payments on the security; and 3) significant loss of value of the underlying collateral behind a security. Recoveries on debt securities, if any, are recorded in the period received.

Restricted stock

WAB is a member of the Federal Reserve System and, as part of its membership, is required to maintain stock in the FRB in a specified ratio to its capital. In addition, WAB is a member of the FHLB system and, accordingly, maintains an investment in capital stock of the FHLB based on the borrowing capacity used. These investments are considered equity securities with no actively traded market. Therefore, the shares are considered restricted investment securities. These investments are carried at cost, which is equal to the value at which they may be redeemed. The dividend income received from the stock is reported in interest income. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. No impairment has been recorded to date.

Loans held for sale

Loans held for sale consist of loans that the Company originates (or acquires) and intends to sell. These loans are carried at the lower of aggregate cost or fair value. Fair value is determined based on quoted fair market values or, when not available, discounted cash flows or appraisals of underlying collateral or the credit quality of the borrower.

Loans held for investment

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost. Amortized cost is the amount of unpaid principal, adjusted for unamortized net deferred fees and costs, premiums and discounts, and writeoffs. In addition, the amortized cost of loans subject to a fair value hedge are adjusted for changes in value attributable to the effective portion of the hedged benchmark interest rate risk.

The Company may also purchase loans or acquire loans through a business combination. At the purchase or acquisition date, loans are evaluated to determine if there has been more than insignificant credit deterioration since origination. Loans that have experienced more than insignificant credit deterioration since origination are referred to as PCD loans. In its evaluation of whether a loan has experienced more than insignificant deterioration in credit quality since origination, the Company takes into consideration loan grades, loan-to-values greater than policy limits, past due and nonaccrual status, and TDR loans. The Company may also consider external credit rating agency ratings for borrowers and for non-commercial loans, FICO score or band, probability of default levels, number of times past due, and standard deviations corresponding to FICO score or band. The initial estimate of credit losses on PCD loans is added to the purchase price on the acquisition date to establish the initial amortized cost basis of the loan; accordingly, the initial recognition of expected credit losses has no impact on net income. When the initial measurement of expected credit losses on PCD loans are calculated on a pooled loan basis, the expected credit losses are allocated to each loan within the pool. Any difference between the initial amortized cost basis and the unpaid principal balance of the loan represents a noncredit discount or premium, which is accreted (or amortized) into interest income over the life of the loan. Subsequent changes to the allowance for credit losses on PCD loans are recorded through the provision for credit losses. For purchased loans that are not deemed to have experienced more than insignificant credit deterioration since origination, any discounts or premiums included in the purchase price are accreted (or amortized) over the contractual life of the individual loan. For additional information, see "Note 3. Loans, Leases and Allowance for Credit Losses" of these Notes to Unaudited Consolidated Financial Statements.

In applying the effective yield method to loans, the Company generally applies the contractual method whereby loan fees collected for the origination of loans less direct loan origination costs (net of deferred loan fees), as well as premiums and discounts and certain purchase accounting adjustments, are amortized over the contractual life of the loan through interest income. If a loan has scheduled payments, the amortization of the net deferred loan fee is calculated using the interest method over the contractual life of the loan. If a loan does not have scheduled payments, such as a line of credit, the net deferred loan fee is recognized as interest income on a straight-line basis over the contractual life of the loan commitment. Commitment fees based on a percentage of a customer’s unused line of credit and fees related to standby letters of credit are recognized over the commitment period. When loans are repaid, any remaining unamortized balances of premiums, discounts, or net deferred fees are recognized as interest income.

Conversely, with respect to loans originated under the PPP, the Company incorporates projected prepayments in calculating effective yield. As a result, net deferred fees are accreted into interest income faster than would be the case when applying the contractual method based upon the timing and amount of estimated forgiven loan balances. The Company expects that a

majority of PPP loans will qualify for forgiveness under the SBA program, based on requested loan amounts largely representing qualifying expenses at the time of application.

Nonaccrual loans

When a borrower discontinues making payments as contractually required by the note, the Company must determine whether it is appropriate to continue to accrue interest. The Company ceases accruing interest income when the loan has become delinquent by more than 90 days or when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely. Past due status is based on the contractual terms of the loan. The Company may decide to continue to accrue interest on certain loans more than 90 days delinquent if the loans are well secured by collateral and in the process of collection.

For all loan types, when a loan is placed on nonaccrual status, all interest accrued but uncollected is reversed against interest income in the period in which the status is changed, and the Company makes a loan-level decision to apply either the cash basis or cost recovery method. The Company may recognize income on a cash basis when a payment is received and only for those nonaccrual loans for which the collection of the remaining principal balance is not in doubt. Under the cost recovery method, subsequent payments received from the customer are applied to principal and generally no further interest income is recognized until the principal has been paid in full or until circumstances have changed such that payments are again consistently received as contractually required. Loans are returned to accrual status when all of the principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Troubled Debt Restructured Loans

A TDR loan is a loan on which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. The evaluation is performed under the Company's internal underwriting policy. The loan terms that may be modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the contractual restructured terms for a reasonable period of time (generally six months), and the ultimate collectability of the total contractual restructured principal and interest is no longer in doubt. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.

The CARES Act, signed into law on March 27, 2020, permits financial institutions to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 that would otherwise be characterized as TDRs and suspend any determination related thereto if (i) the loan modification is made between March 1, 2020 and the earlier of December 31, 2020 or 60 days after the end of the coronavirus emergency declaration and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. In addition, federal bank regulatory authorities have issued guidance to encourage financial institutions to make loan modifications for borrowers affected by COVID-19 and have assured financial institutions that they will neither receive supervisory criticism for such prudent loan modifications, nor be required by examiners to automatically categorize COVID-19-related loan modifications as TDRs. The Company is applying this guidance to qualifying loan modifications.

Credit quality indicators

Loans are regularly reviewed to assess credit quality indicators and to determine appropriate loan classification and grading in accordance with applicable bank regulations. The Company’s risk rating methodology assigns risk ratings ranging from 1 to 9, where a higher rating represents higher risk. The Company differentiates its loan segments based on shared risk characteristics for which expected credit loss is measured on a pool basis.

The nine risk rating categories can be generally described by the following groupings for loans:

"Pass" (grades 1 through 5): The Company has five pass risk ratings, which represent a level of credit quality that ranges from no well-defined deficiency or weakness to some noted weakness; however, the risk of default on any loan classified as pass is expected to be remote. The five pass risk ratings are described below:

Minimal risk. These consist of loans that are fully secured either with cash held in a deposit account at the Bank or by readily marketable securities with an acceptable margin based on the type of security pledged.

Low risk. These consist of loans with a high investment grade rating equivalent.

Modest risk. These consist of loans where the credit facility greatly exceeds all policy requirements or with policy exceptions that are appropriately mitigated. A secondary source of repayment is verified and considered sustainable. Collateral coverage on these loans is sufficient to fully cover the debt as a tertiary source of repayment. Debt of the borrower is low relative to borrower’s financial strength and ability to pay.

Average risk. These consist of loans where the credit facility meets or exceeds all policy requirements or with policy exceptions that are appropriately mitigated. A secondary source of repayment is available to service the debt. Collateral coverage is more than adequate to cover the debt. The borrower exhibits acceptable cash flow and moderate leverage.

Acceptable risk. These consist of loans with an acceptable primary source of repayment, but a less than preferable secondary source of repayment. Cash flow is adequate to service debt, but there is minimal excess cash flow. Leverage is moderate or high.

"Special mention" (grade 6): Generally these are assets that possess potential weaknesses that warrant management's close attention. These loans may involve borrowers with adverse financial trends, higher debt-to-equity ratios, or weaker liquidity positions, but not to the degree of being considered a “problem loan” where risk of loss may be apparent. Loans in this category are usually performing as agreed, although there may be non-compliance with financial covenants.

"Substandard" (grade 7): These assets are characterized by well-defined credit weaknesses and carry the distinct possibility that the Company will sustain some loss if such weakness or deficiency is not corrected. All loans 90 days or more past due and all loans on nonaccrual status are considered at least "Substandard," unless extraordinary circumstances would suggest otherwise.

"Doubtful" (grade 8): These assets have all the weaknesses inherent in those classified as "Substandard" with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable, but because of certain known factors that may work to the advantage and strengthening of the asset (for example, capital injection, perfecting liens on additional collateral and refinancing plans), classification as an estimated loss is deferred until a more precise status may be determined. Due to the high probability of loss, loans classified as "Doubtful" are placed on nonaccrual status.

"Loss" (grade 9): These assets are considered uncollectible and having such little recoverable value that it is not practical to defer writing off the asset. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practicable or desirable to defer writing off the asset, even though partial recovery may be achieved in the future.

Allowance for credit losses on loans

On January 1, 2020, the Company adopted the amendments within ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which changes the impairment model for most financial assets carried at amortized cost from an incurred loss model to an expected loss model. The discussion below reflects the current expected credit loss model methodology. For discussion of the former incurred loss model methodology, refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2019. Credit risk is inherent in the business of extending loans and leases to borrowers and is continuously monitored by management and reflected within the allowance for credit losses for loans. The allowance for credit losses is an estimate of life-of-loan losses for the Company's loans held for investment. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of a loan to present the net amount expected to be collected on the loan. Accrued interest receivable on loans, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses. Expected recoveries of amounts previously written off and expected to be written off are included in the valuation account and may not exceed the aggregate of amounts previously written off and expected to be written off. The Company formally re-evaluates and establishes the appropriate level of the allowance for credit losses on a quarterly basis.

Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. In future periods, evaluations of the overall loan portfolio or particular segments of the loan portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the allowance for credit losses and credit loss expense in those future periods. The allowance level is influenced by loan volumes, mix, loan performance metrics, asset quality characteristics, delinquency status, historical credit loss experience, and the inputs and assumptions in economic forecasts, such as macroeconomic inputs, length of reasonable and supportable forecast periods, and reversion methods. The methodology for estimating the amount of expected credit losses reported in the allowance for credit losses has two basic components: first, an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans and; second, a pooled component for estimated expected credit losses for pools of loans that share similar risk characteristics.

Loans that do not share risk characteristics with other loans

Loans that do not share risk characteristics with other loans are evaluated on an individual basis. Loans evaluated individually are not included in the collective evaluation. These loans consist of loans with unique features or loans that no longer share risk characteristics with other pooled loans. The process for determining whether a loan should be evaluated on an individual basis begins with determination of credit rating. All loans graded substandard or worse and all PCD loans, irrespective of credit rating, are specifically reviewed for loss potential and, when deemed appropriate, are assigned a reserve based on an individual evaluation. For these loans, the allowance is based primarily on the fair value of the underlying collateral, utilizing independent third-party appraisals.

Loans that share similar risk characteristics with other loans

In estimating the component of the allowance for credit losses for loans that share similar risk characteristics with other loans, such loans are segregated into loan segments. The Company's primary portfolio segments have changed due to adoption of the amendments within ASU 2016-13 to align with the methodology applied in estimating the allowance for credit losses under CECL. Loans are designated into loan segments based on loans pooled by product types, business lines, and similar risk characteristics or areas of risk concentration.

In determining the allowance for credit losses, the Company derives an estimate of expected credit losses primarily using an expected loss methodology that incorporates risk parameters (probability of default, loss given default, and exposure at default), which are derived from various vendor models, internally-developed statistical models, or non-statistical estimation approaches. Probability of default is projected in these models or estimation approaches using multiple economic scenarios, whose outcomes are weighted based on the Company's economic outlook and were developed to incorporate relevant information about past events, current conditions, and reasonable and supportable forecasts. With the exception of the Company's residential loan segment, the Company's PD models share a common definition of default, which include loans that are 90 days past due, on nonaccrual status, have a writeoff, or obligor bankruptcy. Input reversion is used for all loan segment models, except for the commercial and industrial and CRE, owner-occupied loan segments. Output reversion is used for the commercial and industrial and CRE, owner-occupied segments by incorporating, after the forecast period, a one-year linear reversion to the long-term reversion rate in year three through the remaining life of the loans within the respective segments. LGDs are typically derived from the Company's historical loss experience. However, for the residential, warehouse lending, and municipal and nonprofit loan segments, where the Company has either zero (or near zero) losses, or has a limited loss history through the last economic downturn, certain non-modeled methodologies are employed. Factors utilized in calculating average LGD vary for each loan segment and are further described below. Exposure at default refers to the Company's exposure to loss at the time of borrower default and is calculated using an amortization schedule based on contractual loan terms, adjusted for a prepayment rate assumption. For most of the Company's loan segments, prepayment rate assumptions are based on a non-modeled approach that calculates the number of loans that were prepaid in full during the period divided by the total number of loans outstanding at the beginning of the period. Prepayment trends are sensitive to interest rates and the macroeconomic environment. Fixed rate loans are more influenced by interest rates, whereas variable rate loans are more influenced by the macroeconomic environment. After the quantitative expected loss estimates are calculated, management then adjusts these estimates to incorporate considerations of current trends and conditions that are not captured in the quantitative loss estimates, through the use of qualitative and/or environmental factors.

The following provides credit quality indicators and risk elements most relevant in monitoring and measuring the allowance for credit losses for each of the loan portfolio segments identified:

Commercial and industrial

The commercial and industrial portfolio segment is comprised of commercial loans that are not collateralized by real estate. The source of repayment of these loans is generally expected to be the income that is generated from the business. The models used to estimate expected credit losses for this loan segment include a combination of a vendor model and an internally-developed model. These models incorporate both market level and company-specific factors such as financial statement variables, adjusted for the current stage of the credit cycle and for the Company's loan performance data such as delinquency, utilization, maturity, and size of the loan commitment under specific macroeconomic scenarios to produce a probability of default. Macroeconomic variables include the Dow Jones Index, credit spread between the BBB Bond Yield and 10-Year Treasury Bond Yield, unemployment rate, and CBOE VIX Index quarterly high. LGD and the prepayment rate assumption for EAD for this loan segment are driven by unemployment levels.

Commercial real estate, owner-occupied

The CRE, owner-occupied portfolio segment is comprised of commercial loans that are collateralized by real estate, where the primary source of repayment is the business that occupies the property. These loans are typically entered into for the purpose of providing real estate finance or improvement. The primary source of repayment of these loans is the income generated by the business and where rental or sale of the property may provide secondary support for the loan. These loans are sensitive to general economic conditions as well as the market valuation of CRE properties. The probability of default estimate for this loan segment is modeled using the same model as the commercial and industrial loan segment. LGD for this loan segment is driven by property appreciation and the prepayment rate assumption for EAD is driven by unemployment levels.

Commercial real estate, non-owner occupied

The CRE, non-owner occupied segment is comprised of loans that are collateralized by real estate, where the owner is not the primary tenant. These loans are typically entered into for the purpose of financing or the improvement of commercial investment properties. The primary source of repayment of these loans are the rents paid by tenants and where the sale of the property may provide secondary support for the loan. These loans are sensitive to the market valuation of CRE properties, rental rates, and general economic conditions. The vendor model used to estimate expected credit losses for this loan segment projects probabilities of default and exposure at default based on multiple macroeconomic scenarios by modeling how macroeconomic conditions affect the commercial real estate market. Real estate market factors utilized in this model include vacancy rate, rental growth rate, net operating income growth rate, and commercial property price changes for each specific property type. The model then incorporates loan and property-level characteristics including debt coverage, leverage, collateral size, seasoning, and property type. LGD for this loan segment is derived from a non-modeled approach that is driven by property appreciation and the prepayment rate assumption for EAD is driven by the property appreciation for fixed rate loans and unemployment levels for variable rate loans.

Residential

The residential loan portfolio segment is comprised of loans collateralized primarily by first liens on 1-4 residential family properties and home equity lines of credit that are collateralized by either first liens or junior liens on residential properties. The primary source of repayment of these loans is the value of the property and the capacity of the owner to make payments on the loan. Unemployment rates and the market valuation of residential properties will impact the ultimate repayment of these loans. The residential mortgage loan model is a vendor model that projects probability of default, loss given default severity, prepayment rate, and exposure at default to calculate expected losses. The model is intended to capture the borrower's payment behavior during the lifetime of the residential loan by incorporating loan level characteristics such as loan type, coupon, age, loan-to-value, and credit score and economic conditions such as Home Price Index, interest rate, and unemployment rate. A default event for residential loans is defined as 60 days or more past due, with property appreciation as the driver for LGD results. The prepayment rate assumption for exposure at default for residential loans is based on industry prepayment history.

Probability of default for HELOCs is derived from an internally-developed model that projects PD by incorporating loan level information such as FICO score, lien position, balloon payments, and macroeconomic conditions such as property appreciation. LGD for this loan segment is driven by property appreciation and lien position. Exposure at default for HELOCs is calculated based on utilization rate assumptions using a non-modeled approach and incorporates management judgment.

Construction and land development

The construction and land portfolio segment is comprised of loans collateralized by land or real estate, which are entered into for the purpose of real estate development. The primary source of repayment of loans is the eventual sale or refinance of the completed project and where claims on the property provide secondary support for the loan. These loans are impacted by the market valuation of CRE and residential properties and general economic conditions that have a higher sensitivity to real estate markets compared to other real estate loans. Default risk of a property is driven by loan-specific drivers, including loan-to-value, maturity, origination date, and the metropolitan statistical area ("MSA") in which the property is located, among other items. The variables used in the internally-developed model include loan level drivers such as origination loan-to-value, loan maturity, and macroeconomic drivers such as property appreciation, MSA level unemployment rate, and national GDP growth. LGD for this loan segment is driven by property appreciation. The prepayment rate assumption for EAD is driven by the property appreciation for fixed rate loans and unemployment levels for variable rate loans.

Warehouse lending

The warehouse lending portfolio segment consists of loans that have a monitored borrowing base to mortgage companies and similar lenders. These loans are collateralized by real estate notes and mortgages or mortgage servicing rights and the borrowing base of these loans is tightly monitored and controlled by the Company. The primary support for the loan takes the

form of pledged collateral, with secondary support provided by the capacity of the financial institution. The collateral-driven nature of these loans distinguish them from traditional commercial and industrial loans. These loans are impacted by interest rate shocks, residential lending rates, prepayment assumptions, and general real estate stress. As a result of the unique loan characteristics, limited historical default and loss experience, and the collateral nature of this loan portfolio segment, the Company uses a non-modeled approach to estimate expected credit losses, leveraging grade information, grade migration history, and management judgment.

Municipal and nonprofit

The municipal and nonprofit portfolio segment consists of loans to local governments, government-operated utilities, special assessment districts, hospitals, schools and other nonprofits. These loans are generally, but not exclusively, entered into for the purpose of financing real estate investment or for refinancing existing debt. Loans are supported by taxes or utility fees, and in some cases tax liens on real estate, operating revenue of the institution, or other collateral support the loans. Unemployment rates and the market valuation of residential properties have an effect on the tax revenues supporting these loans; however, these loans tend to be less cyclical in comparison to similar commercial loans as these loans rely on diversified tax bases. The Company uses a non-modeled approach to estimate expected credit losses, leveraging grade information and historical municipal default rates.

Other

This portfolio consists of those loans not already captured in one of the aforementioned loan portfolio segments, which include, but may not be limited to, overdraft lines for treasury services, credit cards, consumer loans not collateralized by real estate, and small business loans collateralized by residential real estate. The consumer and small business loans are supported by the capacity of the borrower and the valuation of any collateral. General economic factors such as unemployment will have an effect on these loans. The Company uses a non-modeled approach to estimate expected credit losses, leveraging average historical default rates. LGD for this loan segment is driven by unemployment levels and lien position. The prepayment rate assumption for EAD is driven by the BBB corporate spread for fixed rate loans and unemployment levels for variable rate loans.

Off-balance sheet credit exposures, including unfunded loan commitments

The Company maintains a separate allowance for credit losses on off-balance-sheet credit exposures, including unfunded loan commitments, financial guarantees, and letters of credit, which is classified in other liabilities on the Consolidated Balance Sheet. The allowance for credit losses on off-balance sheet credit exposures is adjusted through increases or decreases to the provision for credit loss expense. The estimate includes consideration of the likelihood that funding will occur, an estimate of exposure at default that is derived from utilization rate assumptions using a non-modeled approach, and PD and LGD estimates that are derived from the same models and approaches for the Company's other loan portfolio segments described above as these unfunded commitments share similar risk characteristics with these loan portfolio segments. No credit loss estimate is reported for off-balance sheet credit exposures that are unconditionally cancellable by the Company or for undrawn amounts under such arrangements that may be drawn prior to the cancellation of the arrangement.

Leases (lessee)

At inception, contracts are evaluated to determine whether the contract constitutes a lease agreement. For contracts that are determined to be an operating lease, a corresponding ROU asset and operating lease liability are recorded in separate line items on the Consolidated Balance Sheet. A ROU asset represents the Company’s right to use an underlying asset during the lease term and a lease liability represents the Company’s commitment to make contractually obligated lease payments. Operating lease ROU assets and liabilities are recognized at the commencement date of the lease and are based on the present value of lease payments over the lease term. The measurement of the operating lease ROU asset includes any lease payments made and is reduced by lease incentives that are paid or are payable to the Company. Variable lease payments that depend on an index or rate such as the Consumer Price Index are included in lease payments based on the rate in effect at the commencement date of the lease. Lease payments are recognized on a straight-line basis as part of occupancy expense over the lease term.

As the rate implicit in the lease is not readily determinable, the Company's incremental collateralized borrowing rate is used to determine the present value of lease payments. This rate gives consideration to the applicable FHLB collateralized borrowing rates and is based on the information available at the commencement date. The Company has elected to apply the short-term lease measurement and recognition exemption to leases with an initial term of 12 months or less; therefore, these leases are not recorded on the Company’s Consolidated Balance Sheet, but rather, lease expense is recognized over the lease term on a straight-line basis. The Company’s lease agreements may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that the options will be exercised.

In addition to the package of practical expedients, the Company also elected the practical expedient that allows lessees to make an accounting policy election to not separate non-lease components from the associated lease component, and instead account for them all together as part of the applicable lease component. This practical expedient can be elected separately for each underlying class of asset. The majority of the Company’s non-lease components such as common area maintenance, parking, and taxes are variable, and are expensed as incurred. Variable payment amounts are determined in arrears by the landlord depending on actual costs incurred.

Goodwill and other intangible assets

The Company records as goodwill the excess of the purchase price in a business combination over the fair value of the identifiable net assets acquired in accordance with applicable guidance. The Company performs its annual goodwill and intangibles impairment tests as of October 1 each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. The Company can first elect to assess, through qualitative factors, whether it is more likely than not that goodwill is impaired. If the qualitative assessment indicates potential impairment, a quantitative impairment test is necessary. If, based on the quantitative test, a reporting unit's carrying amount exceeds its fair value, a goodwill impairment charge for this difference is recorded to current period earnings as non-interest expense.

The Company’s intangible assets consist primarily of core deposit intangible assets that are amortized over periods ranging from five to 10 years. The Company considers the remaining useful lives of its core deposit intangible assets each reporting period, as required by ASC 350, Intangibles—Goodwill and Other, to determine whether events and circumstances warrant a revision to the remaining period of amortization. If the estimate of an intangible asset’s remaining useful life has changed, the remaining carrying amount of the intangible asset is amortized prospectively over the revised remaining useful life. The Company did not revise its estimates of the useful lives of its core deposit intangibles during the three and nine months ended September 30, 2020 or 2019.

Treasury shares

The Company separately presents treasury shares, which represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. Treasury shares are carried at cost.

Common stock repurchases

On December 11, 2018, the Company adopted its common stock repurchase program, pursuant to which the Company was authorized to repurchase up to $250.0 million of its shares of common stock through December 31, 2019. The program was renewed through December 2020, authorizing the Company to repurchase up to an additional $250.0 million of its outstanding common stock. All shares repurchased under the plan are retired upon settlement. The Company has elected to allocate the excess of the repurchase price over the par value of its common stock between APIC and retained earnings, with the portion allocated to APIC limited to the amount of APIC that was recorded at the time that the shares were initially issued, which is calculated on a last-in, first-out basis.

Derivative financial instruments

The Company uses interest rate swaps to mitigate interest-rate risk associated with changes to the fair value of certain fixed-rate financial instruments (fair value hedges).

The Company recognizes derivatives as assets or liabilities on the Consolidated Balance Sheet at their fair value in accordance with ASC 815, Derivatives and Hedging. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset or liability attributable to a particular risk, such as interest rate risk, are considered fair value hedges.

Changes in the fair value of a derivative that is designated and qualifies as a fair value hedge, along with changes in the fair value of the hedged asset or liability that are attributable to the hedged risk, are recorded in current period earnings. Changes in the fair value of derivatives not considered to be highly effective in hedging the change in fair value of the hedged item are recognized in earnings as non-interest income during the period of the change.

The Company documents its hedge relationships, including identification of the hedging instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transaction after the derivative contract is executed. At inception, the Company performs a quantitative assessment to determine whether the derivatives used in hedging transactions are highly effective (as defined in the guidance) in offsetting changes in the fair value of the hedged item. Retroactive effectiveness is assessed, as well as the continued expectation that the hedge will remain effective prospectively.

After the initial quantitative assessment is performed, on a quarterly basis, the Company performs a qualitative hedge effectiveness assessment. This assessment takes into consideration any adverse developments related to the counterparty's risk of default and any negative events or circumstances that affect the factors that originally enabled the Company to assess that it could reasonably support, qualitatively, an expectation that the hedging relationship was and will continue to be highly effective. The Company discontinues hedge accounting prospectively when it is determined that a hedge is no longer highly effective. When hedge accounting is discontinued on a fair value hedge that no longer qualifies as an effective hedge, the derivative instrument continues to be reported at fair value on the Consolidated Balance Sheet, but the carrying amount of the hedged item is no longer adjusted for future changes in fair value. The adjustment to the carrying amount of the hedged item that existed at the date hedge accounting is discontinued is amortized over the remaining life of the hedged item into earnings.

Derivative instruments that are not designated as hedges, so called free-standing derivatives, are reported on the Consolidated Balance Sheet at fair value and the changes in fair value are recognized in earnings as non-interest income during the period of change.

The Company may in the normal course of business purchase a financial instrument or originate a loan that contains an embedded derivative instrument. Upon purchasing the instrument or originating the loan, the Company assesses whether the economic characteristics of the embedded derivative are clearly and closely related to the economic characteristics of the remaining component of the financial instrument (i.e., the host contract) and whether a separate instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When it is determined that the embedded derivative possesses economic characteristics that are not clearly and closely related to the economic characteristics of the host contract and a separate instrument with the same terms would qualify as a derivative instrument, the embedded derivative is separated from the host contract and carried at fair value. However, in cases where the host contract is measured at fair value, with changes in fair value reported in current earnings, or the Company is unable to reliably identify and measure an embedded derivative for separation from its host contract, the entire contract is carried on the Consolidated Balance Sheet at fair value and is not designated as a hedging instrument.

Off-balance sheet instruments

In the ordinary course of business, the Company has entered into off-balance sheet financial instrument arrangements consisting of commitments to extend credit and standby letters of credit. Such financial instruments are recorded in the Consolidated Financial Statements when they are funded. They involve, to varying degrees, elements of credit risk in excess of amounts recognized on the Consolidated Balance Sheet. Losses could be experienced when the Company is contractually obligated to make a payment under these instruments and must seek repayment from the borrower, which may not be as financially sound in the current period as they were when the commitment was originally made. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract and, in certain instances, may be unconditionally cancelable. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral.

The Company also has off-balance sheet arrangements related to its derivative instruments. Derivative instruments are recognized in the Consolidated Financial Statements at fair value and their notional values are carried off-balance sheet. See "Note 8. Derivatives and Hedging Activities" of these Notes to Unaudited Consolidated Financial Statements for further discussion.

Fair values of financial instruments

The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities. ASC 820, Fair Value Measurement, establishes a framework for measuring fair value and a three-level valuation hierarchy for disclosure of fair value measurement, and also sets forth disclosure requirements for fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The Company uses various valuation approaches, including market, income, and/or cost approaches. ASC 820 establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors market participants would consider in pricing the

asset or liability developed based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the reliability of inputs, as follows:

•Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

•Level 2 - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, prepayment speeds, volatilities, etc.) or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market.

•Level 3 - Valuation is generated from model-based techniques where one or more significant inputs are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of matrix pricing, discounted cash flow models, and similar techniques.

The availability of observable inputs varies based on the nature of the specific financial instrument. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

Fair value is a market-based measure considered from the perspective of a market participant who may purchase the asset or assume the liability, rather than an entity-specific measure. When market assumptions are available, ASC 820 requires that the Company make assumptions regarding the assumptions that market participants would use to estimate the fair value of the financial instrument at the measurement date.

ASC 825, Financial Instruments, requires disclosure of fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value.

Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent limitations in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates presented herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction at September 30, 2020 and December 31, 2019. The estimated fair value amounts for September 30, 2020 and December 31, 2019 have been measured as of period-end, and have not been re-evaluated or updated for purposes of these Unaudited Consolidated Financial Statements subsequent to those dates. As such, the estimated fair values of these financial instruments subsequent to the reporting date may be different than the amounts reported at period-end.

The information in "Note 12. Fair Value Accounting" of these Notes to Unaudited Consolidated Financial Statements should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only required for a limited portion of the Company’s assets and liabilities.

Due to the wide range of valuation techniques and the degree of subjectivity used in making the estimate, comparisons between the Company’s disclosures and those of other companies or banks may not be meaningful.

The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments:

Cash, cash equivalents, and restricted cash

The carrying amounts reported on the Consolidated Balance Sheet for cash and due from banks approximate their fair value.

Money market investments

The carrying amounts reported on the Consolidated Balance Sheet for money market investments approximate their fair value.

Investment securities

The fair values of CRA investments, exchange-listed preferred stock, trust preferred securities, and certain corporate debt securities are based on quoted market prices and are categorized as Level 1 in the fair value hierarchy.

The fair values of debt securities are primarily determined based on matrix pricing. Matrix pricing is a mathematical technique that utilizes observable market inputs including, for example, yield curves, credit ratings, and prepayment speeds. Fair values determined using matrix pricing are generally categorized as Level 2 in the fair value hierarchy. For a small subset of securities, other pricing sources are used, including observed prices on publicly traded securities and dealer quotes.

Restricted stock

WAB is a member of the Federal Reserve System and the FHLB and, accordingly, maintains investments in the capital stock of the FRB and the FHLB. These investments are carried at cost since no ready market exists for them, and they have no quoted market value. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. The fair values of these investments have been categorized as Level 2 in the fair value hierarchy.

Loans

The fair value of loans is estimated based on discounted cash flows using interest rates currently being offered for loans with similar terms to borrowers with similar credit quality and adjustments that the Company believes a market participant would consider in determining fair value based on a third-party independent valuation. As a result, the fair value for loans is categorized as Level 2 in the fair value hierarchy, excluding collateral dependent and impaired loans, which are categorized as Level 3.

Accrued interest receivable and payable

The carrying amounts reported on the Consolidated Balance Sheet for accrued interest receivable and payable approximate their fair values.

Derivative financial instruments

All derivatives are recognized on the Consolidated Balance Sheets at their fair value. The fair value for derivatives is determined based on market prices, broker-dealer quotations on similar products, or other related input parameters. As a result, the fair values have been categorized as Level 2 in the fair value hierarchy.

Deposits

The fair value disclosed for demand and savings deposits is by definition equal to the amount payable on demand at their reporting date (that is, their carrying amount) as these deposits do not have a contractual term. The carrying amount for variable rate deposit accounts approximates their fair value. Fair values for fixed rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on these deposits. The fair value measurement of the deposit liabilities is categorized as Level 2 in the fair value hierarchy.

FHLB advances and customer repurchase agreements

The fair values of the Company’s borrowings are estimated using discounted cash flow analyses, based on the market rates for similar types of borrowing arrangements. The FHLB advances and customer repurchase agreements have been categorized as Level 2 in the fair value hierarchy due to their short durations.

Subordinated debt

The fair value of subordinated debt is based on the market rate for the respective subordinated debt security. Subordinated debt has been categorized as Level 2 in the fair value hierarchy.

Junior subordinated debt

Junior subordinated debt is valued based on a discounted cash flow model which uses as inputs Treasury Bond rates and the 'BB' and 'BBB' rated financial indexes. Junior subordinated debt has been categorized as Level 3 in the fair value hierarchy.

Off-balance sheet instruments

The fair value of the Company’s off-balance sheet instruments (lending commitments and letters of credit) is based on quoted fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements, and the counterparties’ credit standing.

Income taxes

The Company is subject to income taxes in the United States and files a consolidated federal income tax return with all of its subsidiaries, with the exception of BW Real Estate, Inc. Deferred income taxes are recorded to reflect the effects of temporary differences between the financial reporting carrying amounts of assets and liabilities and their income tax bases using enacted tax rates that are expected to be in effect when the taxes are actually paid or recovered. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.

Net deferred tax assets are recorded to the extent that these assets will more-likely-than-not be realized. In making these determinations, all available positive and negative evidence is considered, including scheduled reversals of deferred tax liabilities, tax planning strategies, projected future taxable income, and recent operating results. If it is determined that deferred income tax assets to be realized in the future are in excess of their net recorded amount, an adjustment to the valuation allowance will be recorded, which will reduce the Company's provision for income taxes.

A tax benefit from an unrecognized tax benefit may be recognized when it is more-likely-than-not that the position will be sustained upon examination, including related appeals or litigation, based on technical merits. Income tax benefits must meet a more-likely-than-not recognition threshold at the effective date to be recognized.

Interest and penalties related to unrecognized tax benefits are recognized as part of the provision for income taxes in the Consolidated Income Statement. Accrued interest and penalties are included in the related tax liability line with other liabilities on the Consolidated Balance Sheet. See "Note 10. Income Taxes" of these Notes to Unaudited Consolidated Financial Statements for further discussion on income taxes.

Non-interest income

Non-interest income includes service charges and fees, income from equity investments, card income, foreign currency income, income from bank owned life insurance, lending related income, net gain or loss on sales of investment securities, net fair value gain or loss adjustments on assets measured at fair value, and other income. Service charges and fees consist of fees earned from performance of account analysis, general account services, and other deposit account services. These fees are recognized as the related services are provided in accordance with ASC 606, Revenue from Contracts with Customers. Income from equity investments includes gains on equity warrant assets, SBIC equity income, and success fees. Card income includes fees earned from customer use of debit and credit cards, interchange income from merchants, and international charges. Card income is generally within the scope of ASC 310, Receivables; however, certain processing transactions for merchants, such as interchange fees, are within the scope of ASC 606. Foreign currency income represents fees earned on the differential between purchases and sales of foreign currency on behalf of the Company’s clients. Income from bank owned life insurance is accounted for in accordance with ASC 325, Investments - Other. Lending related income includes fees earned from gains or losses on the sale of loans, SBA income, and letter of credit fees. Gains and losses on the sale of loans and SBA income are recognized pursuant to ASC 860, Transfers and Servicing. Net unrealized gains or losses on assets measured at fair value represent fair value changes in equity securities and are accounted for in accordance with ASC 321, Investments - Equity Securities. Fees related to standby letters of credit are accounted for in accordance with ASC 440, Commitments. Other income includes operating lease income, which is recognized on a straight-line basis over the lease term in accordance with ASC 842, Leases. Net gain or loss on sales/valuations of repossessed and other assets is presented as a component of non-interest expense, but may also be presented as a component of non-interest income in the event that a net gain is recognized. Net gain or loss on sales of repossessed and other assets are accounted for in accordance with ASC 610, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets. See "Note 14. Revenue from Contracts with Customers" of these Notes to Unaudited Consolidated Financial Statements for further details related to the nature and timing of revenue recognition for non-interest income revenue streams within the scope of the new standard.

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Investment Securities

9 Months Ended

Sep. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Investment Securities

d fair values of investment securities at September 30, 2020 and December 31, 2019 are summarized as follows:

	September 30, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	504,477	$	43,663	$	—	$	548,140
Available-for-sale debt securities
CDO	$	50	$	8,126	$	—	$	8,176
Commercial MBS issued by GSEs	91,769		3,888		—		95,657
Corporate debt securities	193,798		1,081		(8,270)		186,609
Municipal securities	22,006		271		(118)		22,159
Private label residential MBS	1,245,217		19,874		(854)		1,264,237
Residential MBS issued by GSEs	1,329,773		32,314		(531)		1,361,556
Tax-exempt	961,373		51,117		(1,467)		1,011,023
Trust preferred securities	32,000		—		(6,792)		25,208
U.S. treasury securities	600		—		—		600
Total AFS debt securities	$	3,876,586	$	116,671	$	(18,032)	$	3,975,225
Equity securities
CRA investments	$	53,190	$	355	$	—	$	53,545
Preferred stock	104,974		3,976		(1,934)		107,016
Total equity securities	$	158,164	$	4,331	$	(1,934)	$	160,561

	December 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	485,107	$	31,303	$	(149)	$	516,261
Available-for-sale debt securities
CDO	$	50	$	10,092	$	—	$	10,142
Commercial MBS issued by GSEs	95,062		366		(1,175)		94,253
Corporate debt securities	105,015		112		(5,166)		99,961
Municipal securities	7,494		279		—		7,773
Private label residential MBS	1,129,985		3,572		(4,330)		1,129,227
Residential MBS issued by GSEs	1,406,594		9,283		(3,817)		1,412,060
Tax-exempt	530,729		24,548		(422)		554,855
Trust preferred securities	32,000		—		(4,960)		27,040
U.S. government sponsored agency securities	10,000		—		—		10,000
U.S. treasury securities	999		—		—		999
Total AFS debt securities	$	3,317,928	$	48,252	$	(19,870)	$	3,346,310
Equity securities
CRA investments	$	52,805	$	—	$	(301)	$	52,504
Preferred stock	82,514		3,881		(198)		86,197
Total equity securities	$	135,319	$	3,881	$	(499)	$	138,701

Securities with carrying amounts of approximately $830.4 million and $962.5 million at September 30, 2020 and December 31, 2019, respectively, were pledged for various purposes as required or permitted by law.

The following tables summarize the Company's AFS debt securities in an unrealized loss position at September 30, 2020 and December 31, 2019, aggregated by major security type and length of time in a continuous unrealized loss position: 

	September 30, 2020
	Less Than Twelve Months				More Than Twelve Months				Total
	Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value
	(in thousands)
Available-for-sale debt securities
Corporate debt securities	$	70	$	31,528	$	8,200	$	91,800	$	8,270	$	123,328
Municipal securities	118		9,384		—		—		118		9,384
Private label residential MBS	851		131,620		3		2,435		854		134,055
Residential MBS issued by GSEs	522		134,180		9		1,193		531		135,373
Tax-exempt	1,467		121,031		—		—		1,467		121,031
Trust preferred securities	—		—		6,792		25,208		6,792		25,208
Total AFS securities	$	3,028	$	427,743	$	15,004	$	120,636	$	18,032	$	548,379

	December 31, 2019
	Less Than Twelve Months				More Than Twelve Months				Total
	Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	149	$	24,325	$	—	$	—	$	149	$	24,325
Available-for-sale debt securities
Commercial MBS issued by GSEs	$	85	$	9,035	$	1,090	$	54,604	$	1,175	$	63,639
Corporate debt securities	—		—		5,166		94,834		5,166		94,834
Private label residential MBS	1,776		337,285		2,554		258,791		4,330		596,076
Residential MBS issued by GSEs	1,740		385,643		2,077		150,419		3,817		536,062
Tax-exempt	422		67,150		—		—		422		67,150
Trust preferred securities	—		—		4,960		27,040		4,960		27,040
Total AFS securities	$	4,023	$	799,113	$	15,847	$	585,688	$	19,870	$	1,384,801

The total number of AFS securities in an unrealized loss position at September 30, 2020 is 73, compared to 158 at December 31, 2019.

On January 1, 2020, the Company adopted the amendments within ASU 2016-13, which replaces the legacy US GAAP OTTI model with a credit loss model. The credit loss model under ASC 326-30, applicable to AFS debt securities, requires recognition of credit losses through an allowance account, but retains the concept from the OTTI model that credit losses are recognized once securities become impaired. For a detailed discussion of the impact of adoption of ASU 2016-13 and information related to investment securities, including accounting policies and methodologies used to estimate the allowance for credit losses on securities, see "Note 1. Summary of Significant Accounting Policies."

Residential MBS issued by GSEs held by the Company are issued by U.S. government entities and agencies. These securities are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies, and have a long history of no credit losses. As the Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell the securities prior to their anticipated recovery, no credit losses have been recognized on these securities during the three and nine months ended September 30, 2020.

Qualitative factors used in the Company's credit loss assessment of its securities that are not guaranteed by the U.S. government included consideration of any adverse conditions related to a specific security, industry, or geographic region of its securities, any credit ratings below investment grade, the payment structure of the security and the likelihood of the issuer to be able to make payments that increase in the future, and failure of the issuer to make any scheduled principal or interest payments. For the Company's corporate debt, municipal, and tax-exempt securities, the Company also considered various metrics of the issuer including days of cash on hand, the ratio of long-term debt to total assets, the net change in cash between reporting periods, and consideration of any breach in covenant requirements. For the Company's private label residential MBS, the Company also considered metrics such as securitization risk weight factor, current credit support, whether there were any mortgage principal

losses resulting from defaults in payments on the underlying mortgage collateral, and the credit default rate over the last twelve months.

As of September 30, 2020, no credit losses on the Company's corporate debt, municipal, and tax-exempt securities have been recognized. The Company's corporate debt and tax-exempt securities continue to be highly rated, issuers continue to make timely principal and interest payments, and the unrealized losses on these security portfolios primarily relate to changes in interest rates and other market conditions that are not considered to be credit-related issues. The Company is continuing to receive timely principal and interest payments on its municipal securities and the majority of these issuers have revenues pledged for payment of debt service prior to payment of other types of expenses. Further, the Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell these securities prior to their anticipated recovery.

The Company's private label residential MBS are non-agency collateralized mortgage obligations and primarily carry investment grade credit ratings as of September 30, 2020. These securities are secured by pools of residential mortgage loans. Credit losses have not been recognized on these securities as of September 30, 2020 as principal and interest payments on these securities continue to be made on a timely basis, credit support for these securities is considered adequate, and as the Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell these securities prior to their anticipated recovery.

The Company's trust preferred securities are investment grade and the issuer continues to make timely principal and interest payments.

Based on the qualitative factors discussed above, no allowance for credit losses for the Company's AFS debt securities has been recognized as of September 30, 2020.

The credit loss model under ASC 326-20, applicable to HTM debt securities, requires recognition of lifetime expected credit losses through an allowance account at the time the security is purchased. The following tables present a rollforward by major security type of the allowance for credit losses for the Company's HTM debt securities:

	Three Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	June 30, 2020								September 30, 2020
	(in thousands)
Held-to-maturity debt securities
Tax-exempt	$	7,649	$	(1,685)	$	—	$	—	$	5,964

	Nine Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	January 1, 2020								September 30, 2020
	(in thousands)
Held-to-maturity debt securities
Tax-exempt	$	2,646	$	3,318	$	—	$	—	$	5,964

Accrued interest receivable on HTM securities totaled $1.8 million at September 30, 2020 and is excluded from the estimate of credit losses.

The following tables summarize the carrying amount of the Company’s investment ratings position as of September 30, 2020 and December 31, 2019, which are updated quarterly and used to monitor the credit quality of the Company's securities: 

	September 30, 2020
	AAA		Split-rated AAA/AA+		AA+ to AA-		A+ to A-		BBB+ to BBB-		BB+ and below		Unrated		Totals
	(in thousands)
Held-to-maturity
Tax-exempt	$	—	$	—	$	—	$	—	$	—	$	—	$	504,477	$	504,477
Available-for-sale debt securities
CDO	$	—	$	—	$	—	$	—	$	—	$	8,176	$	—	$	8,176
Commercial MBS issued by GSEs	—		95,657		—		—		—		—		—		95,657
Corporate debt securities	—		—		—		45,800		122,579		18,230		—		186,609
Municipal securities	—		—		12,143		—		2,630		—		7,386		22,159
Private label residential MBS	1,235,170		—		27,682		91		347		947		—		1,264,237
Residential MBS issued by GSEs	—		1,361,556		—		—		—		—		—		1,361,556
Tax-exempt	43,328		56,725		447,629		431,459		—		—		31,882		1,011,023
Trust preferred securities	—		—		—		—		25,208		—		—		25,208
U.S. treasury securities	—		600		—		—		—		—		—		600
Total AFS securities (1)	$	1,278,498	$	1,514,538	$	487,454	$	477,350	$	150,764	$	27,353	$	39,268	$	3,975,225
Equity securities
CRA investments	$	—	$	27,795	$	—	$	—	$	—	$	—	$	25,750	$	53,545
Preferred stock	—		—		—		—		68,945		37,135		936		107,016
Total equity securities (1)	$	—	$	27,795	$	—	$	—	$	68,945	$	37,135	$	26,686	$	160,561

(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

	December 31, 2019
	AAA		Split-rated AAA/AA+		AA+ to AA-		A+ to A-		BBB+ to BBB-		BB+ and below		Unrated		Totals
	(in thousands)
Held-to-maturity
Tax-exempt	$	—	$	—	$	—	$	—	$	—	$	—	$	485,107	$	485,107
Available-for-sale debt securities
CDO	$	—	$	—	$	—	$	—	$	—	$	10,142	$	—	$	10,142
Commercial MBS issued by GSEs	—		94,253		—		—		—		—		—		94,253
Corporate debt securities	—		—		—		66,530		33,431		—		—		99,961
Municipal securities	—		—		—		—		—		—		7,773		7,773
Private label residential MBS	1,096,909		—		30,675		181		288		1,174		—		1,129,227
Residential MBS issued by GSEs	—		1,412,060		—		—		—		—		—		1,412,060
Tax-exempt	52,610		2,856		327,657		171,732		—		—		—		554,855
Trust preferred securities	—		—		—		—		27,040		—		—		27,040
U.S. government sponsored agency securities	—		10,000		—		—		—		—		—		10,000
U.S. treasury securities	—		999		—		—		—		—		—		999
Total AFS securities (1)	$	1,149,519	$	1,520,168	$	358,332	$	238,443	$	60,759	$	11,316	$	7,773	$	3,346,310
Equity securities
CRA investments	$	—	$	25,375	$	—	$	—	$	—	$	—	$	27,129	$	52,504
Preferred stock	—		—		—		—		82,851		2,105		1,241		86,197
Total equity securities (1)	$	—	$	25,375	$	—	$	—	$	82,851	$	2,105	$	28,370	$	138,701

(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

A security is considered to be past due once it is 30 days contractually past due under the terms of the agreement. As of September 30, 2020, there were no investment securities that were past due. In addition, the Company does not have a significant amount of investment securities on nonaccrual status or securities that are considered to be collateral-dependent as of September 30, 2020.

The amortized cost and fair value of the Company's debt securities as of September 30, 2020, by contractual maturities, are shown below. MBS are shown separately as individual MBS are comprised of pools of loans with varying maturities. Therefore, these securities are listed separately in the maturity summary.

	September 30, 2020
	Amortized Cost		Estimated Fair Value
	(in thousands)
Held-to-maturity
Due in one year or less	$	7,330	$	7,336
After one year through five years	17,135		17,628
After ten years	480,012		523,176
Total HTM securities	$	504,477	$	548,140
Available-for-sale
Due in one year or less	$	600	$	600
After one year through five years	9,024		9,047
After five years through ten years	229,899		223,844
After ten years	970,304		1,020,284
Mortgage-backed securities	2,666,759		2,721,450
Total AFS securities	$	3,876,586	$	3,975,225

The following table presents gross gains and losses on sales of investment securities:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Available-for-sale securities
Gross gains	$	—	$	3,152	$	405	$	3,152
Gross losses	—		—		(175)		—
Net gains (losses) on AFS securities	$	—	$	3,152	$	230	$	3,152

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Other Borrowings

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Other Borrowings

The following table summarizes the Company’s borrowings as of September 30, 2020 and December 31, 2019: 

	September 30, 2020		December 31, 2019
	(in thousands)
Short-Term:
Federal funds purchased	$	—	$	—
FHLB advances	10,000		—
Total short-term borrowings	$	10,000	$	—

The Company maintains federal fund lines of credit totaling $2.4 billion as of September 30, 2020, which have rates comparable to the federal funds effective rate plus 0.10% to 0.20%. As of September 30, 2020 and December 31, 2019, there were no outstanding balances on the Company's federal fund lines of credit.

The Company also maintains secured lines of credit with the FHLB and the FRB. The Company’s borrowing capacity is determined based on collateral pledged, generally consisting of investment securities and loans, at the time of the borrowing. The Company has a PPP lending facility with the FRB that allows the Company to pledge loans originated under the PPP in return for dollar for dollar funding from the FRB, which would provide up to $1.8 billion in additional credit. The amount of available credit under the PPP lending facility will decline each period as these loans are paid down. At September 30, 2020, the Company had no amounts outstanding under its line of credit or its PPP lending facility with the FRB and had $10.0 million in borrowings under its lines of credit with the FHLB. As of September 30, 2020 and December 31, 2019, the Company had additional available credit with the FHLB of approximately $4.4 billion and $4.5 billion, respectively, and with the FRB of approximately $2.4 billion and $1.1 billion, respectively.

Other short-term borrowing sources available to the Company include customer repurchase agreements, which totaled $19.7 million and $16.7 million at September 30, 2020 and December 31, 2019, respectively. The weighted average rate on customer repurchase agreements was 0.18% and 0.15% as of September 30, 2020 and December 31, 2019, respectively.

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Qualifying Debt

9 Months Ended

Sep. 30, 2020

Qualifying Debt Disclosure [Abstract]

Qualifying Debt

Subordinated Debt

The Company's subordinated debt consists of three separate issuances. The Parent issued $175.0 million of subordinated debentures in June 2016, which were recorded net of issuance costs of $5.5 million, and mature July 1, 2056. Beginning on or after July 1, 2021, the Company may redeem the debentures, in whole or in part, at their principal amount plus any accrued and unpaid interest. The debentures have a fixed interest rate of 6.25% per annum.

In June 2015, WAB issued $150.0 million of subordinated debt, which was recorded net of debt issuance costs of $1.8 million, and matures July 15, 2025. The subordinated debt is redeemable by WAB, in whole or in part, on or after July 15, 2020 and on every interest payment date thereafter, for a price equal to the principal amount plus accrued and unpaid interest. The subordinated debt had a fixed interest rate of 5.00% through June 30, 2020, which then converted to a variable rate of 3.20% plus three-month LIBOR through maturity. Subsequent to September 30, 2020, WAB redeemed $75 million of this subordinated debt issuance.

In May 2020, WAB issued $225.0 million of subordinated debt, which was recorded net of debt issuance costs of $3.1 million, and matures June 1, 2030. The subordinated debt is redeemable by WAB, in whole or in part, on or after June 1, 2025 and on every interest payment date thereafter, at a redemption price equal to the principal amount plus accrued and unpaid interest. The subordinated debt has a fixed interest rate of 5.25% through June 1, 2025 and then converts to a floating rate per annum equal to the three-month SOFR plus 512 basis points for each quarterly interest period during the floating rate period.

To hedge the interest rate risk on the Company's 2015 and 2016 subordinated debt issuances, the Company entered into fair value interest rate hedges with receive fixed/pay variable swaps.

The carrying value of all subordinated debt issuances, which includes the fair value of the related hedges, totals $545.3 million and $319.2 million at September 30, 2020 and December 31, 2019, respectively.

Junior Subordinated Debt

The Company has formed or acquired through acquisition eight statutory business trusts, which exist for the exclusive purpose of issuing Cumulative Trust Preferred Securities.

With the exception of debt issued by Bridge Capital Trust I and Bridge Capital Trust II, junior subordinated debt is recorded at fair value at each reporting date due to the FVO election made by the Company under ASC 825. The Company did not make the FVO election for the junior subordinated debt acquired as part of the Bridge acquisition. Accordingly, the carrying value of these trusts does not reflect the current fair value of the debt and includes a fair market value adjustment established at acquisition that is being accreted over the remaining life of the trusts.

The carrying value of junior subordinated debt was $73.5 million and $74.4 million as of September 30, 2020 and December 31, 2019, respectively. The weighted average interest rate of all junior subordinated debt as of September 30, 2020 was 2.57%, which is three-month LIBOR plus the contractual spread of 2.34%, compared to a weighted average interest rate of 4.25% at December 31, 2019.

In the event of certain changes or amendments to regulatory requirements or federal tax rules, the debt is redeemable in whole. The obligations under these instruments are fully and unconditionally guaranteed by the Company and rank subordinate and junior in right of payment to all other liabilities of the Company. Based on guidance issued by the FRB, the Company's securities continue to qualify as Tier 1 Capital.

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Stockholders' Equity

9 Months Ended

Sep. 30, 2020

Stockholders' Equity Note [Abstract]

Stockholder's Equity

Stock-Based Compensation

Restricted Stock Awards

Restricted stock awards granted to employees generally vest over a 3-year period. Stock grants made to non-employee WAL directors in 2020 were fully vested on July 1, 2020. The Company estimates the compensation cost for stock grants based upon the grant date fair value. Stock compensation expense is recognized on a straight-line basis over the requisite service period for the entire award. The aggregate grant date fair value for the restricted stock awards granted during the three and nine months ended September 30, 2020 was zero and $22.3 million, respectively. Stock compensation expense related to restricted stock awards granted to employees are included in Salaries and employee benefits in the Consolidated Income Statement. For restricted stock awards granted to WAL directors, related stock compensation expense is included in Legal, professional, and directors' fees. For the three and nine months ended September 30, 2020, the Company recognized $4.5 million and $15.3 million in stock-based compensation expense related to these stock grants, compared to $4.0 million and $13.7 million for the three and nine months ended September 30, 2019.

In addition, the Company previously granted shares of restricted stock to certain members of executive management that had both performance and service conditions that affect vesting. There were no such grants made during the three and nine months ended September 30, 2020 and 2019, however expense is still being recognized for a grant made in 2017 with a four-year vesting period. For the three and nine months ended September 30, 2020, the Company recognized $0.3 million and $0.9 million in stock-based compensation expense related to these performance-based restricted stock grants, compared to $0.5 million and $1.5 million for the three and nine months ended September 30, 2019.

Performance Stock Units

The Company grants performance stock units to members of its executive management that do not vest unless the Company achieves a specified cumulative EPS target and a TSR performance measure over a three-year performance period. The number of shares issued will vary based on the cumulative EPS target and relative TSR performance factor that is achieved. The Company estimates the cost of performance stock units based upon the grant date fair value and expected vesting percentage over the three-year performance period. For the three and nine months ended September 30, 2020, the Company recognized $1.8 million and $5.3 million in stock-based compensation expense related to these performance stock units, compared to $1.6 million and $4.5 million for the three and nine months ended September 30, 2019.

The three-year performance period for the 2017 grant ended on December 31, 2019, and the Company's cumulative EPS and TSR performance measure for the performance period exceeded the level required for a maximum award under the terms of the grant. As a result, 136,334 shares became fully vested and was distributed to executive management in the first quarter of 2020.

Common Stock Repurchase

The Company's common stock repurchase program was renewed through December 2020, authorizing the Company to repurchase up to $250.0 million of its outstanding common stock. Effective April 17, 2020, the Company temporarily suspended its stock repurchase program. Prior to this decision and pursuant to the repurchase plan, the Company repurchased 2,066,479 shares of its common stock at a weighted average price of $34.65 for a total payment of $71.7 million. During the three and nine months ended September 30, 2019, the Company repurchased 1,000,000 and 2,733,603 shares of its common stock at a weighted average price of $43.63 and $42.25 for a total payment of $43.7 million and $115.6 million, respectively.

Cash Dividend

During the three and nine months ended September 30, 2020, the Company declared and paid a quarterly cash dividend of $0.25 per share, for a total dividend payment to shareholders of $25.2 million and $76.0 million, respectively. During the three and nine months ended September 30, 2019, the Company declared and paid one quarterly cash dividend of $0.25 per share of common stock, totaling $25.7 million.

Treasury Shares

Treasury share purchases represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. During the three and nine months ended September 30, 2020, the Company purchased treasury shares of 14,398 and 164,564 at a weighted average price of $35.73 and $50.86 per share, respectively. During the three and nine months ended September 30, 2019, the Company purchased treasury shares of 33,031 and 209,183 at a weighted average price of $46.33 and $45.78 per share, respectively.

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Accumulated Other Comprehensive Income

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

Accumulated Other Comprehensive Income

The following table summarizes the changes in accumulated other comprehensive income by component, net of tax, for the periods indicated: 

	Three Months Ended September 30,
	Unrealized holding gains (losses) on AFS		Unrealized holding gains (losses) on SERP		Unrealized holding gains (losses) on junior subordinated debt		Impairment loss on securities		Total
	(in thousands)
Balance, June 30, 2020	$	66,809	$	(313)	$	7,181	$	—	$	73,677
Other comprehensive income (loss) before reclassifications	7,592		(3)		(2,681)		—		4,908
Amounts reclassified from AOCI	—		—		—		—		—
Net current-period other comprehensive income (loss)	7,592		(3)		(2,681)		—		4,908
Balance, September 30, 2020	$	74,401	$	(316)	$	4,500	$	—	$	78,585
Balance, June 30, 2019	$	19,709	$	357	$	6,171	$	144	$	26,381
Other comprehensive income (loss) before reclassifications	11,014		(18)		598		—		11,594
Amounts reclassified from AOCI	(2,232)		—		—		(144)		(2,376)
Net current-period other comprehensive income (loss)	8,782		(18)		598		(144)		9,218
Balance, September 30, 2019	$	28,491	$	339	$	6,769	$	—	$	35,599
	Nine Months Ended September 30,
	Unrealized holding gains (losses) on AFS		Unrealized holding gains (losses) on SERP		Unrealized holding gains (losses) on junior subordinated debt		Impairment loss on securities		Total
	(in thousands)
Balance, December 31, 2019	$	21,399	$	(20)	$	3,629	$	—	$	25,008
Other comprehensive income (loss) before reclassifications	53,176		(296)		871		—		53,751
Amounts reclassified from AOCI	(174)		—		—		—		(174)
Net current-period other comprehensive income (loss)	53,002		(296)		871		—		53,577
Balance, September 30, 2020	$	74,401	$	(316)	$	4,500	$	—	$	78,585
Balance, December 31, 2018	$	(47,591)	$	392	$	13,433	$	144	$	(33,622)
Other comprehensive income (loss) before reclassifications	78,314		(53)		(6,664)		—		71,597
Amounts reclassified from AOCI	(2,232)		—		—		(144)		(2,376)
Net current-period other comprehensive income (loss)	76,082		(53)		(6,664)		(144)		69,221
Balance, September 30, 2019	$	28,491	$	339	$	6,769	$	—	$	35,599

The following table presents reclassifications out of accumulated other comprehensive income:

	Three Months Ended September 30,				Nine Months Ended September 30,
Income Statement Classification	2020		2019		2020		2019
	(in thousands)
Gain (loss) on sales of investment securities, net	$	—	$	3,152	$	230	$	3,152
Income tax (expense) benefit	—		(776)		(56)		(776)
Net of tax	$	—	$	2,376	$	174	$	2,376

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Derivatives and Hedging

9 Months Ended

Sep. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities

The Company is a party to various derivative instruments. Derivative instruments are contracts between two or more parties that have a notional amount and an underlying variable, require a small or no initial investment, and allow for the net settlement of positions. A derivative’s notional amount serves as the basis for the payment provision of the contract and takes the form of units, such as shares or dollars. A derivative’s underlying variable is a specified interest rate, security price, commodity price, foreign exchange rate, index, or other variable. The interaction between the notional amount and the underlying variable determines the number of units to be exchanged between the parties and influences the fair value of the derivative contract.

The primary type of derivatives that the Company uses are interest rate swaps. Generally, these instruments are used to help manage the Company's exposure to interest rate risk and meet client financing and hedging needs.

Derivatives are recorded at fair value on the Consolidated Balance Sheets, after taking into account the effects of bilateral collateral and master netting agreements. These agreements allow the Company to settle all derivative contracts held with the same counterparty on a net basis, and to offset net derivative positions with related cash collateral, where applicable.

As of September 30, 2020, December 31, 2019, and September 30, 2019, the Company does not have any outstanding cash flow hedges.

Derivatives Designated in Hedge Relationships

The Company utilizes derivatives that have been designated as part of a hedge relationship in accordance with the applicable accounting guidance to minimize the exposure to changes in benchmark interest rates and volatility of net interest income and EVE to interest rate fluctuations. The primary derivative instruments used to manage interest rate risk are interest rate swaps, which convert the contractual interest rate index of agreed-upon amounts of assets and liabilities (i.e., notional amounts) from either a fixed rate to a floating rate, or from a floating rate to a fixed rate.

The Company has entered into pay fixed/receive variable interest rate swaps designated as fair value hedges of certain fixed rate loans. As a result, the Company receives variable-rate interest payments in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts.

The Company has also entered into receive fixed/pay variable interest rate swaps, designated as fair value hedges on its fixed rate 2015 and 2016 subordinated debt offerings. As a result, the Company is paying a floating rate of three-month LIBOR plus 3.16% and is receiving semi-annual fixed payments of 5.00% to match the payments on the $150.0 million subordinated debt. For the fair value hedge on the Parent's $175.0 million subordinated debentures issued on June 16, 2016, the Company is paying a floating rate of three-month LIBOR plus 3.25% and is receiving quarterly fixed payments of 6.25% to match the payments on the debt.

Derivatives Not Designated in Hedge Relationships

Management also enters into certain foreign exchange derivative contracts and back-to-back interest rate swaps which are not designated as accounting hedges. Foreign exchange derivative contracts include spot, forward, forward window, and swap contracts. The purpose of these derivative contracts is to mitigate foreign currency risk on transactions entered into, or on behalf of customers. Contracts with customers, along with the related derivative trades that the Company places, are both remeasured at fair value, and are referred to as economic hedges since they economically offset the Company's exposure. The Company's back-to-back interest rate swaps are used to manage long-term interest rate risk.

Fair Value Hedges

As of September 30, 2020 and December 31, 2019, the following amounts are reflected on the Consolidated Balance Sheets related to cumulative basis adjustments for fair value hedges:

	September 30, 2020				December 31, 2019
	Carrying Value of Hedged Assets/(Liabilities)		Cumulative Fair Value Hedging Adjustment (1)		Carrying Value of Hedged Assets/(Liabilities)		Cumulative Fair Value Hedging Adjustment (1)
	(in thousands)
Loans - HFI, net of deferred loan fees and costs	$	596,505	$	92,352	$	578,063	$	53,292
Qualifying debt	(323,386)		(3,417)		(319,197)		401

(1)Included in the carrying value of the hedged assets/(liabilities).

For the Company's derivative instruments that are designated and qualify as a fair value hedge, the effective portion is recorded as a basis adjustment to the hedged asset or liability, and the ineffective portion is recorded in non-interest income.

Fair Values, Volume of Activity, and Gain/Loss Information Related to Derivative Instruments

The following table summarizes the fair values of the Company's derivative instruments on a gross and net basis as of September 30, 2020, December 31, 2019, and September 30, 2019. The change in the notional amounts of these derivatives from September 30, 2019 to September 30, 2020 indicates the volume of the Company's derivative transaction activity during these periods. The derivative asset and liability balances are presented on a gross basis, prior to the application of bilateral collateral and master netting agreements. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow the Company to settle all derivative contracts with the same counterparty on a net basis and to offset the net derivative position with the related collateral. Where master netting agreements are not in effect or are not enforceable under bankruptcy laws, the Company does not adjust those derivative amounts with counterparties. The fair value of derivative contracts, after taking into account the effects of master netting agreements, is included in other assets or other liabilities on the Consolidated Balance Sheets, as indicated in the following table:

	September 30, 2020						December 31, 2019						September 30, 2019
			Fair Value						Fair Value						Fair Value
	Notional Amount		Derivative Assets		Derivative Liabilities		Notional Amount		Derivative Assets		Derivative Liabilities		Notional Amount		Derivative Assets		Derivative Liabilities
	(in thousands)
Derivatives designated as hedging instruments:
Fair value hedges
Interest rate swaps	$	692,348	$	3,417	$	92,352	$	862,952	$	1,778	$	55,471	$	865,321	$	—	$	63,970
Total	692,348		3,417		92,352		862,952		1,778		55,471		865,321		—		63,970
Netting adjustments (1)	—		—		—		—		21		21		—		—		—
Net	$	692,348	$	3,417	$	92,352	$	862,952	$	1,757	$	55,450	$	865,321	$	—	$	63,970
Derivatives not designated as hedging instruments:
Foreign currency contracts	$	38,922	$	460	$	401	$	6,711	$	44	$	18	$	15,329	$	191	$	127
Interest rate swaps	3,517		242		242		2,932		81		81		2,932		124		124
Total	$	42,439	$	702	$	643	$	9,643	$	125	$	99	$	18,261	$	315	$	251

(1)Netting adjustments represent the amounts recorded to convert the Company's derivative balances from a gross basis to a net basis in accordance with the applicable accounting guidance.

Counterparty Credit Risk

Like other financial instruments, derivatives contain an element of credit risk. This risk is measured as the expected replacement value of the contracts. Management enters into bilateral collateral and master netting agreements that provide for the net settlement of all contracts with the same counterparty. Additionally, management monitors counterparty credit risk exposure on each contract to determine appropriate limits on the Company's total credit exposure across all product types, which may require the Company to post collateral to counterparties when these contracts are in a net liability position and conversely, for counterparties to post collateral to the Company when these contracts are in a net asset position. In general, the Company has a zero credit threshold with regard to derivative exposure with counterparties. Management reviews the Company's collateral positions on a daily basis and exchanges collateral with counterparties in accordance with standard ISDA documentation and other related agreements. The Company generally posts or holds collateral in the form of cash deposits or highly rated securities issued by the U.S. Treasury or government-sponsored enterprises, such as GNMA, FNMA, and FHLMC. The total collateral pledged by the Company to counterparties exceeded its net derivative liabilities as of September 30, 2020, December 31, 2019, and September 30, 2019, resulting in excess collateral postings of $14.6 million, $29.2 million and $31.0 million, respectively.

The following table summarizes the Company's largest exposure to an individual counterparty at the dates indicated:

	September 30, 2020		December 31, 2019		September 30, 2019
	(in thousands)
Largest gross exposure (derivative asset) to an individual counterparty	$	3,417	$	1,757	$	—
Collateral posted by this counterparty	—		1,610		—
Derivative liability with this counterparty	—		—		—
Collateral pledged to this counterparty	—		—		—
Net exposure after netting adjustments and collateral	$	3,417	$	147	$	—

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Earnings per Share

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Earnings Per Share

Diluted EPS is based on the weighted average outstanding common shares during each period, including common stock equivalents. Basic EPS is based on the weighted average outstanding common shares during the period.

The following table presents the calculation of basic and diluted EPS: 

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands, except per share amounts)
Weighted average shares - basic	99,850		102,041		100,322		103,024
Dilutive effect of stock awards	209		410		252		444
Weighted average shares - diluted	100,059		102,451		100,574		103,468
Net income	$	135,769	$	127,375	$	313,005	$	371,107
Earnings per share - basic	1.36		1.25		3.12		3.60
Earnings per share - diluted	1.36		1.24		3.11		3.59

The Company had no anti-dilutive stock options outstanding at each of the periods ended September 30, 2020 and 2019.

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Income Taxes

9 Months Ended

Sep. 30, 2020

Income Tax Disclosure [Abstract]

Income Taxes

The Company's effective tax rate was 18.50% and 18.30% for the three months ended September 30, 2020 and 2019, respectively. For the nine months ended September 30, 2020 and 2019, the Company's effective tax rate was 18.05% and 17.52%, respectively. The increase in the effective tax rate from the three and nine months ended September 30, 2019 is due primarily to tax expense associated with a surrender of bank owned life insurance, detriments from vested stock compensation and increased state tax accruals, partially offset by increases in forecasted tax-exempt income and investment tax credits in 2020.

As of September 30, 2020, the net deferred tax asset was $46.6 million, an increase of $28.6 million from December 31, 2019. This overall increase in the net deferred tax asset was primarily the result of an increase in the allowance for credit losses under the new CECL accounting guidance, which upon adoption on January 1, 2020, increased the deferred tax asset by $8.7 million. Expected tax credit carryovers which were not fully offset by additional unrealized gains on AFS securities also contributed to the increase. For a detailed discussion of the impact of adoption of CECL, see "Note 1. Summary of Significant Accounting Policies."

Although realization is not assured, the Company believes that the realization of the recognized deferred tax asset of $46.6 million at September 30, 2020 is more-likely-than-not based on expectations as to future taxable income and based on available tax planning strategies that could be implemented if necessary to prevent a carryover from expiring.

At September 30, 2020 and December 31, 2019, the Company had no deferred tax valuation allowance.

As of September 30, 2020, the Company’s gross federal NOL carryovers after current year-to-date utilization, all of which are subject to limitations under Section 382 of the IRC, totaled approximately $44.6 million for which a deferred tax asset of $5.2 million has been recorded, reflecting the expected benefit of these remaining federal NOL carryovers. The Company also has varying gross amounts of state NOL carryovers, with the most significant in Arizona. The gross Arizona NOL carryovers totaled approximately $0.7 million. A deferred tax asset balance of $0.1 million as of September 30, 2020 has been recorded to reflect the expected benefit of all remaining state NOL carryovers.

LIHTC and renewable energy projects

The Company holds ownership interests in limited partnerships and limited liability companies that invest in affordable housing and renewable energy projects. These investments are designed to generate a return primarily through the realization of federal tax credits and deductions. The limited liability entities are considered to be VIEs; however, as a limited partner, the Company is not the primary beneficiary and is not required to consolidate these entities.

Investments in LIHTC and renewable energy total $414.3 million and $409.4 million as of September 30, 2020 and December 31, 2019, respectively. Unfunded LIHTC and renewable energy obligations are included as part of other liabilities on the Consolidated Balance Sheets and total $161.5 million and $191.0 million as of September 30, 2020 and December 31, 2019, respectively. For the three months ended September 30, 2020 and 2019, $14.5 million and $13.0 million, respectively, of amortization related to LIHTC investments was recognized as a component of income tax expense. For the nine months ended September 30, 2020 and 2019, $34.2 million and $33.6 million, respectively, of amortization related to LIHTC investments was recognized as a component of income tax expense.

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Fair Value Accounting

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value Accounting

The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach, and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC 825 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under ASC 825 are described in "Note 1. Summary of Significant Accounting Policies" of these Notes to Unaudited Consolidated Financial Statements.

In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally-developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the Company’s creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below.

Under ASC 825, the Company elected the FVO treatment for junior subordinated debt issued by WAL. This election is irrevocable and results in the recognition of unrealized gains and losses on these items at each reporting date. These unrealized gains and losses are recognized as part of other comprehensive income rather than earnings. The Company did not elect FVO treatment for the junior subordinated debt assumed in the Bridge Capital Holdings acquisition.

For the three and nine months ended September 30, 2020 and 2019, unrealized gains and losses from fair value changes on junior subordinated debt were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Unrealized (losses)/gains	$	(3,555)	$	794	$	1,156	$	(8,837)
Changes included in OCI, net of tax	(2,681)		598		871		(6,664)

Fair value on a recurring basis

Financial assets and financial liabilities measured at fair value on a recurring basis include the following:

AFS securities: Securities classified as AFS are reported at fair value utilizing Level 1 and Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include quoted prices in active markets, dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the bond’s terms and conditions, among other things.

Equity securities: Preferred stock and CRA investments are reported at fair value primarily utilizing Level 1 inputs.

Independent pricing service: The Company's independent pricing service provides pricing information on the majority of the Company's Level 1 and Level 2 AFS securities. For a small subset of securities, other pricing sources are used, including observed prices on publicly traded securities and dealer quotes. Management independently evaluates the fair value measurements received from the Company's third-party pricing service through multiple review steps. First, management reviews what has transpired in the marketplace with respect to interest rates, credit spreads, volatility, and mortgage rates, among other things, and develops an expectation of changes to the securities' valuations from the previous quarter. Then, management selects a sample of investment securities and compares the values provided by its primary third-party pricing service to the market values obtained from secondary sources, including other pricing services and safekeeping statements, and

evaluates those with notable variances.  In instances where there are discrepancies in pricing from various sources and management expectations, management may manually price securities using currently observed market data to determine whether they can develop similar prices or may utilize bid information from broker dealers. Any remaining discrepancies between management’s review and the prices provided by the vendor are discussed with the vendor and/or the Company’s other valuation advisors.

Interest rate swaps: Interest rate swaps are reported at fair value utilizing Level 2 inputs. The Company obtains dealer quotations to value its interest rate swaps.

Junior subordinated debt: The Company estimates the fair value of its junior subordinated debt using a discounted cash flow model which incorporates the effect of the Company’s own credit risk in the fair value of the liabilities (Level 3). The Company’s cash flow assumptions are based on contractual cash flows as the Company anticipates that it will pay the debt according to its contractual terms.

The fair value of assets and liabilities measured at fair value on a recurring basis was determined using the following inputs as of the periods presented: 

	Fair Value Measurements at the End of the Reporting Period Using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
	(in thousands)
September 30, 2020
Assets:
Available-for-sale debt securities
CDO	$	—	$	8,176	$	—	$	8,176
Commercial MBS issued by GSEs	—		95,657		—		95,657
Corporate debt securities	—		186,609		—		186,609
Municipal securities	—		22,159		—		22,159
Private label residential MBS	—		1,264,237		—		1,264,237
Residential MBS issued by GSEs	—		1,361,556		—		1,361,556
Tax-exempt	—		1,011,023		—		1,011,023
Trust preferred securities	25,208		—		—		25,208
U.S. treasury securities	—		600		—		600
Total AFS debt securities	$	25,208	$	3,950,017	$	—	$	3,975,225
Equity securities
CRA investments	$	27,795	$	25,750	$	—	$	53,545
Preferred stock	107,016		—		—		107,016
Total equity securities	$	134,811	$	25,750	$	—	$	160,561
Loans - HFS	$	—	$	20,764	$	—	$	20,764
Derivative assets (1)	—		4,119		—		4,119
Liabilities:
Junior subordinated debt (2)	$	—	$	—	$	60,529	$	60,529
Derivative liabilities (1)	—		92,995		—		92,995

(1)Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $92,352 and the net carrying value of subordinated debt is increased by $3,417 as of September 30, 2020 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

	Fair Value Measurements at the End of the Reporting Period Using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
	(in thousands)
December 31, 2019
Assets:
Available-for-sale debt securities
CDO	$	—	$	10,142	$	—	$	10,142
Commercial MBS issued by GSEs	—		94,253		—		94,253
Corporate debt securities	5,127		94,834		—		99,961
Municipal securities	—		7,773		—		7,773
Private label residential MBS	—		1,129,227		—		1,129,227
Residential MBS issued by GSEs	—		1,412,060		—		1,412,060
Tax-exempt	—		554,855		—		554,855
Trust preferred securities	27,040		—		—		27,040
U.S. government sponsored agency securities	—		10,000		—		10,000
U.S. treasury securities	—		999		—		999
Total AFS debt securities	$	32,167	$	3,314,143	$	—	$	3,346,310
Equity securities
CRA investments	$	52,504	$	—	$	—	$	52,504
Preferred stock	86,197		—		—		86,197
Total equity securities	$	138,701	$	—	$	—	$	138,701
Loans - HFS	$	—	$	21,803	$	—	$	21,803
Derivative assets (1)	—		1,903		—		1,903
Liabilities:
Junior subordinated debt (2)	$	—	$	—	$	61,685	$	61,685
Derivative liabilities (1)	—		55,570		—		55,570

(1)Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $53,292 and the net carrying value of subordinated debt is decreased by $401 as of December 31, 2019 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

For the three and nine months ended September 30, 2020 and 2019, the change in Level 3 liabilities measured at fair value on a recurring basis was as follows:

	Junior Subordinated Debt
	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Beginning balance	$	(56,974)	$	(58,315)	$	(61,685)	$	(48,684)
Change in fair value (1)	(3,555)		794		1,156		(8,837)
Ending balance	$	(60,529)	$	(57,521)	$	(60,529)	$	(57,521)

(1)Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded as part of OCI, net of tax, and totaled $(2.7) million and $0.6 million for three months ended September 30, 2020 and 2019, respectively, and $0.9 million and $(6.7) million for the nine months ended September 30, 2020 and 2019, respectively.

For Level 3 liabilities measured at fair value on a recurring basis as of September 30, 2020 and December 31, 2019, the significant unobservable inputs used in the fair value measurements were as follows:

	September 30, 2020		Valuation Technique	Significant Unobservable Inputs	Input Value
	(in thousands)
Junior subordinated debt	$	60,529	Discounted cash flow	Implied credit rating of the Company	3.65	%

	December 31, 2019		Valuation Technique	Significant Unobservable Inputs	Input Value
	(in thousands)
Junior subordinated debt	$	61,685	Discounted cash flow	Implied credit rating of the Company	5.09	%

The significant unobservable inputs used in the fair value measurement of the Company’s junior subordinated debt as of September 30, 2020 and December 31, 2019 was the implied credit risk for the Company. As of September 30, 2020, the implied credit risk spread was calculated as the difference between the average of the 15-year 'BB' and 'BBB' rated financial indexes over the corresponding swap index. As of December 31, 2019, the implied credit risk spread was calculated as the difference between the 15-year 'BB' rated financial index over the corresponding swap index.

As of September 30, 2020, the Company estimates the discount rate at 3.65%, which represents an implied credit spread of 3.42% plus three-month LIBOR (0.23%). As of December 31, 2019, the Company estimated the discount rate at 5.09%, which was a 3.18% credit spread plus three-month LIBOR (1.91%).

Fair value on a nonrecurring basis

Certain assets are measured at fair value on a nonrecurring basis. That is, the assets are not measured at fair value on an ongoing basis, but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of credit deterioration). The following table presents such assets carried on the Consolidated Balance Sheet by caption and by level within the ASC 825 hierarchy:

	Fair Value Measurements at the End of the Reporting Period Using
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Active Markets for Similar Assets (Level 2)		Unobservable Inputs (Level 3)
	(in thousands)
As of September 30, 2020:
Loans	$	245,219	$	—	$	—	$	245,219
Other assets acquired through foreclosure	8,591		—		—		8,591
As of December 31, 2019:
Loans	$	110,272	$	—	$	—	$	110,272
Other assets acquired through foreclosure	13,850		—		—		13,850

For Level 3 assets measured at fair value on a nonrecurring basis as of September 30, 2020 and December 31, 2019, the significant unobservable inputs used in the fair value measurements were as follows:

	September 30, 2020		Valuation Technique(s)		Significant Unobservable Inputs	Range
	(in thousands)
Loans	$	245,219	Collateral method	Third party appraisal	Costs to sell	4.0% to 10.0%
			Discounted cash flow method	Discount rate	Contractual loan rate	4.0% to 7.0%
Other assets acquired through foreclosure	8,591		Collateral method	Third party appraisal	Costs to sell	4.0% to 10.0%

	December 31, 2019		Valuation Technique(s)		Significant Unobservable Inputs	Range
	(in thousands)
Loans	$	110,272	Collateral method	Third party appraisal	Costs to sell	4.0% to 10.0%
			Discounted cash flow method	Discount rate	Contractual loan rate	4.0% to 7.0%
				Scheduled cash collections	Probability of default	0% to 20.0%
				Proceeds from non-real estate collateral	Loss given default	0% to 70.0%
Other assets acquired through foreclosure	13,850		Collateral method	Third party appraisal	Costs to sell	4.0% to 10.0%

Loans: Loans measured at fair value on a nonrecurring basis include collateral dependent loans held for investment. The specific reserves for these loans are based on collateral value, net of estimated disposition costs and other identified quantitative inputs. Collateral value is determined based on independent third-party appraisals or internally-developed discounted cash flow analyses. Appraisals may utilize a single valuation approach or a combination of approaches, including comparable sales and the income approach. Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. In addition, when adjustments are made to an appraised value to reflect various factors such as the age of the appraisal or known changes in the market or the collateral, such valuation inputs are considered unobservable and the fair value measurement is categorized as a Level 3 measurement. Internal discounted cash flow analyses are also utilized to estimate the fair value of these loans, which considers internally-developed, unobservable inputs such as discount rates, default rates, and loss severity.

Total Level 3 collateral dependent loans had an estimated fair value of $245.2 million and $110.3 million at September 30, 2020 and December 31, 2019, respectively, net of a specific valuation allowance of $9.6 million and $2.8 million at September 30, 2020 and December 31, 2019, respectively.

Other assets acquired through foreclosure: Other assets acquired through foreclosure consist of properties acquired as a result of, or in-lieu-of, foreclosure. These assets are initially reported at the fair value determined by independent appraisals using appraised value less estimated cost to sell. Such properties are generally re-appraised every twelve months. There is risk for subsequent volatility. Costs relating to the development or improvement of the assets are capitalized and costs relating to holding the assets are charged to expense.

Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. When significant adjustments are based on unobservable inputs, such as when a current appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, the resulting fair value measurement has been categorized as a Level 3 measurement. The Company had $8.6 million and $13.9 million of such assets at September 30, 2020 and December 31, 2019, respectively.

Fair Value of Financial Instruments

The estimated fair value of the Company’s financial instruments is as follows:

	September 30, 2020
	Carrying Amount		Fair Value
			Level 1		Level 2		Level 3		Total
	(in thousands)
Financial assets:
Investment securities:
HTM	$	504,477	$	—	$	548,140	$	—	$	548,140
AFS	3,975,225		25,208		3,950,017		—		3,975,225
Equity	160,561		134,811		25,750		—		160,561
Derivative assets	4,119		—		4,119		—		4,119
Loans, net	25,703,458		—		—		26,107,177		26,107,177
Accrued interest receivable	140,827		—		140,827		—		140,827
Financial liabilities:
Deposits	$	28,843,396	$	—	$	28,850,576	$	—	$	28,850,576
Customer repurchase agreements	19,688		—		19,688		—		19,688
Qualifying debt	618,772		—		566,308		72,628		638,936
Derivative liabilities	92,995		—		92,995		—		92,995
Accrued interest payable	15,666		—		15,666		—		15,666

	December 31, 2019
	Carrying Amount		Fair Value
			Level 1		Level 2		Level 3		Total
	(in thousands)
Financial assets:
Investment securities:
HTM	$	485,107	$	—	$	516,261	$	—	$	516,261
AFS	3,346,310		32,167		3,314,143		—		3,346,310
Equity securities	138,701		138,701		—		—		138,701
Derivative assets	1,903		—		1,903		—		1,903
Loans, net	20,955,499		—		—		21,256,462		21,256,462
Accrued interest receivable	108,694		—		108,694		—		108,694
Financial liabilities:
Deposits	$	22,796,493	$	—	$	22,813,265	$	—	$	22,813,265
Customer repurchase agreements	16,675		—		16,675		—		16,675
Qualifying debt	393,563		—		332,635		74,155		406,790
Derivative liabilities	55,570		—		55,570		—		55,570
Accrued interest payable	24,661		—		24,661		—		24,661

Interest rate risk

The Company assumes interest rate risk (the risk to the Company’s earnings and capital from changes in interest rate levels) as a result of its normal operations. As a result, the fair values of the Company’s financial instruments, as well as its future net interest income, will change when interest rate levels change and that change may be either favorable or unfavorable to the Company.

Interest rate risk exposure is measured using interest rate sensitivity analysis to determine the Company's change in EVE and net interest income resulting from hypothetical changes in interest rates. If potential changes to EVE and net interest income resulting from hypothetical interest rate changes are not within the limits established by the BOD, the BOD may direct management to adjust the asset and liability mix to bring interest rate risk within BOD-approved limits.

WAB has an ALCO charged with managing interest rate risk within the BOD-approved limits. Limits are structured to preclude an interest rate risk profile that does not conform to both management and BOD risk tolerances without ALCO approval. There is also ALCO reporting at the Parent level for reviewing interest rate risk for the Company, which gets reported to the BOD and its Finance and Investment Committee.

Fair value of commitments

The estimated fair value of standby letters of credit outstanding at September 30, 2020 and December 31, 2019 approximates zero as there have been no significant changes in borrower creditworthiness. Loan commitments on which the committed interest rates are less than the current market rate are insignificant at September 30, 2020 and December 31, 2019.

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Segments

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Segments

The Company's reportable segments are aggregated based primarily on geographic location, services offered, and markets served. The Company's regional segments, which include Arizona, Nevada, Southern California, and Northern California, provide full service banking and related services to their respective markets. The operations from the regional segments correspond to the following banking divisions: ABA in Arizona, BON and FIB in Nevada, TPB in Southern California, and Bridge in Northern California.

The Company's NBL segments provide specialized banking services to niche markets. The Company's NBL reportable segments include HOA Services, Public & Nonprofit Finance, Technology & Innovation, HFF, and Other NBLs. These NBLs are managed centrally and are broader in geographic scope than the Company's other segments, though still predominately located within the Company's core market areas.

The Corporate & Other segment consists of corporate-related items, income and expense items not allocated to the Company's other reportable segments, and inter-segment eliminations.

The Company's segment reporting process begins with the assignment of all loan and deposit accounts directly to the segments where these products are originated and/or serviced. Equity capital is assigned to each segment based on the risk profile of their assets and liabilities. With the exception of goodwill, which is assigned a 100% weighting, equity capital allocations ranged from 0% to 12% during the year, with a funds credit provided for the use of this equity as a funding source. Any excess or deficient equity not allocated to segments based on risk is assigned to the Corporate & Other segment.

Net interest income, provision for credit losses, and non-interest expense amounts are recorded in their respective segment to the extent that the amounts are directly attributable to those segments. Net interest income is recorded in each segment on a TEB with a corresponding increase in income tax expense, which is eliminated in the Corporate & Other segment.

Further, net interest income of a reportable segment includes a funds transfer pricing process that matches assets and liabilities with similar interest rate sensitivity and maturity characteristics. Using this funds transfer pricing methodology, liquidity is transferred between users and providers. A net user of funds has lending/investing in excess of deposits/borrowings and a net provider of funds has deposits/borrowings in excess of lending/investing. A segment that is a user of funds is charged for the use of funds, while a provider of funds is credited through funds transfer pricing, which is determined based on the average life of the assets or liabilities in the portfolio. Residual funds transfer pricing mismatches are allocable to the Corporate & Other segment and presented as part of net interest income.

The net income amount for each reportable segment is further derived by the use of expense allocations. Certain expenses not directly attributable to a specific segment are allocated across all segments based on key metrics, such as number of employees, average loan balances, and average deposit balances. These types of expenses include information technology, operations, human resources, finance, risk management, credit administration, legal, and marketing.

Income taxes are applied to each segment based on the effective tax rate for the geographic location of the segment. Any difference in the corporate tax rate and the aggregate effective tax rates in the segments are adjusted in the Corporate & Other segment.

The following is a summary of operating segment information for the periods indicated:

			Regional Segments
Balance Sheet:	Consolidated Company		Arizona		Nevada		Southern California		Northern California
At September 30, 2020	(in millions)
Assets:
Cash, cash equivalents, and investment securities	$	6,119.8	$	1.5	$	8.8	$	1.8	$	2.3
Loans, net of deferred loan fees and costs	26,014.0		4,388.1		2,612.2		2,376.7		1,785.8
Less: allowance for credit losses	(310.5)		(57.0)		(36.4)		(31.5)		(19.3)
Total loans	25,703.5		4,331.1		2,575.8		2,345.2		1,766.5
Other assets acquired through foreclosure, net	8.6		—		8.5		—		—
Goodwill and other intangible assets, net	299.0		—		23.2		—		153.9
Other assets	1,204.6		47.8		60.1		16.2		20.1
Total assets	$	33,335.5	$	4,380.4	$	2,676.4	$	2,363.2	$	1,942.8
Liabilities:
Deposits	$	28,843.4	$	8,541.5	$	4,733.9	$	3,502.0	$	2,741.1
Borrowings and qualifying debt	628.8		—		—		—		—
Other liabilities	639.3		28.7		18.8		8.6		20.0
Total liabilities	30,111.5		8,570.2		4,752.7		3,510.6		2,761.1
Allocated equity:	3,224.0		576.4		343.7		281.2		361.5
Total liabilities and stockholders' equity	$	33,335.5	$	9,146.6	$	5,096.4	$	3,791.8	$	3,122.6
Excess funds provided (used)	—		4,766.2		2,420.0		1,428.6		1,179.8

Income Statement:
Three Months Ended September 30, 2020	(in thousands)
Net interest income	$	284,738	$	83,492	$	46,625	$	35,656	$	28,353
Provision for (recovery of) credit losses	14,661		9,830		8,548		5,213		1,856
Net interest income after provision for credit losses	270,077		73,662		38,077		30,443		26,497
Non-interest income	20,606		1,771		2,391		1,186		2,381
Non-interest expense	(124,092)		(17,644)		(15,800)		(14,020)		(12,885)
Income (loss) before income taxes	166,591		57,789		24,668		17,609		15,993
Income tax expense (benefit)	30,822		14,447		5,180		4,930		4,478
Net income	$	135,769	$	43,342	$	19,488	$	12,679	$	11,515

Nine Months Ended September 30, 2020	(in thousands)
Net interest income	$	852,158	$	229,701	$	139,328	$	104,348	$	85,345
Provision for (recovery of) credit losses	157,837		46,623		25,015		23,750		12,680
Net interest income after provision for credit losses	694,321		183,078		114,313		80,598		72,665
Non-interest income	46,985		4,943		7,355		3,269		6,450
Non-interest expense	(359,372)		(58,674)		(44,414)		(43,216)		(38,460)
Income (loss) before income taxes	381,934		129,347		77,254		40,651		40,655
Income tax expense (benefit)	68,929		32,207		16,164		11,241		11,340
Net income	$	313,005	$	97,140	$	61,090	$	29,410	$	29,315

	National Business Lines
Balance Sheet:	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
At September 30, 2020
Assets:	(in millions)
Cash, cash equivalents, and investment securities	$	—	$	—	$	—	$	—	$	26.6	$	6,078.8
Loans, net of deferred loan fees and costs	280.0		1,686.7		2,329.3		2,099.3		8,451.8		4.1
Less: allowance for credit losses	(2.3)		(17.9)		(41.5)		(40.7)		(63.9)		—
Total loans	277.7		1,668.8		2,287.8		2,058.6		8,387.9		4.1
Other assets acquired through foreclosure, net	—		—		—		—		0.1		—
Goodwill and other intangible assets, net	—		—		119.3		0.1		2.5		—
Other assets	5.4		11.9		9.2		33.4		110.3		890.2
Total assets	$	283.1	$	1,680.7	$	2,416.3	$	2,092.1	$	8,527.4	$	6,973.1
Liabilities:
Deposits	$	3,697.9	$	—	$	4,646.4	$	—	$	61.4	$	919.2
Borrowings and qualifying debt	—		—		—		—		—		628.8
Other liabilities	(2.7)		91.8		5.4		0.9		56.8		411.0
Total liabilities	3,695.2		91.8		4,651.8		0.9		118.2		1,959.0
Allocated equity:	104.9		130.3		397.5		167.5		673.2		187.8
Total liabilities and stockholders' equity	$	3,800.1	$	222.1	$	5,049.3	$	168.4	$	791.4	$	2,146.8
Excess funds provided (used)	3,517.0		(1,458.6)		2,633.0		(1,923.7)		(7,736.0)		(4,826.3)

Income Statement:
Three Months Ended September 30, 2020	(in thousands)
Net interest income	$	22,184	$	2,800	$	48,013	$	12,536	$	46,582	$	(41,503)
Provision for (recovery of) credit losses	(138)		781		(9,048)		2,200		(2,706)		(1,875)
Net interest income after provision for credit losses	22,322		2,019		57,061		10,336		49,288		(39,628)
Non-interest income	134		—		3,126		—		2,924		6,693
Non-interest expense	(9,896)		(1,724)		(11,530)		(2,596)		(12,335)		(25,662)
Income (loss) before income taxes	12,560		295		48,657		7,740		39,877		(58,597)
Income tax expense (benefit)	2,889		68		11,191		1,780		9,172		(23,313)
Net income	$	9,671	$	227	$	37,466	$	5,960	$	30,705	$	(35,284)

Nine Months Ended September 30, 2020	(in thousands)
Net interest income	$	67,740	$	6,351	$	137,436	$	39,442	$	128,096	$	(85,629)
Provision for (recovery of) credit losses	(2,198)		553		25,471		27,530		(4,737)		3,150
Net interest income after provision for credit losses	69,938		5,798		111,965		11,912		132,833		(88,779)
Non-interest income	350		—		9,247		—		4,108		11,263
Non-interest expense	(29,965)		(5,114)		(36,188)		(7,353)		(35,674)		(60,314)
Income (loss) before income taxes	40,323		684		85,024		4,559		101,267		(137,830)
Income tax expense (benefit)	9,361		380		19,461		893		23,083		(55,201)
Net income	$	30,962	$	304	$	65,563	$	3,666	$	78,184	$	(82,629)

			Regional Segments
Balance Sheet:	Consolidated Company		Arizona		Nevada		Southern California		Northern California
At December 31, 2019	(in millions)
Assets:
Cash, cash equivalents, and investment securities	$	4,471.2	$	1.8	$	9.0	$	2.3	$	2.2
Loans, net of deferred loan fees and costs	21,123.3		3,847.9		2,252.5		2,253.9		1,311.2
Less: allowance for credit losses	(167.8)		(31.6)		(18.0)		(18.3)		(9.7)
Total loans	20,955.5		3,816.3		2,234.5		2,235.6		1,301.5
Other assets acquired through foreclosure, net	13.9		—		13.0		0.9		—
Goodwill and other intangible assets, net	297.6		—		23.2		—		154.6
Other assets	1,083.7		48.6		59.4		15.0		19.8
Total assets	$	26,821.9	$	3,866.7	$	2,339.1	$	2,253.8	$	1,478.1
Liabilities:
Deposits	$	22,796.5	$	5,384.7	$	4,350.1	$	2,585.3	$	2,373.6
Borrowings and qualifying debt	393.6		—		—		—		—
Other liabilities	615.1		17.8		11.9		1.2		15.9
Total liabilities	23,805.2		5,402.5		4,362.0		2,586.5		2,389.5
Allocated equity:	3,016.7		453.6		301.0		253.3		312.5
Total liabilities and stockholders' equity	$	26,821.9	$	5,856.1	$	4,663.0	$	2,839.8	$	2,702.0
Excess funds provided (used)	—		1,989.4		2,323.9		586.0		1,223.9

Income Statement:
Three Months Ended September 30, 2019	(in thousands)
Net interest income	$	266,422	$	68,828	$	40,565	$	33,630	$	23,504
Provision for (recovery of) credit losses	3,803		103		(62)		(189)		218
Net interest income (expense) after provision for credit losses	262,619		68,725		40,627		33,819		23,286
Non-interest income	19,441		1,821		2,677		1,079		1,917
Non-interest expense	(126,152)		(27,241)		(15,211)		(15,185)		(12,379)
Income (loss) before income taxes	155,908		43,305		28,093		19,713		12,824
Income tax expense (benefit)	28,533		10,826		5,899		5,520		3,591
Net income	$	127,375	$	32,479	$	22,194	$	14,193	$	9,233

Nine Months Ended September 30, 2019	(in thousands)
Net interest income	$	768,439	$	183,772	$	119,191	$	95,751	$	70,533
Provision for (recovery of) credit losses	15,303		1,705		166		611		(653)
Net interest income (expense) after provision for credit losses	753,136		182,067		119,025		95,140		71,186
Non-interest income	49,069		5,050		7,926		3,054		6,299
Non-interest expense	(352,279)		(72,183)		(45,099)		(44,890)		(38,419)
Income (loss) before income taxes	449,926		114,934		81,852		53,304		39,066
Income tax expense (benefit)	78,819		28,733		17,189		14,925		10,939
Net income	$	371,107	$	86,201	$	64,663	$	38,379	$	28,127

	National Business Lines
Balance Sheet:	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
At December 31, 2019
Assets:	(in millions)
Cash, cash equivalents, and investment securities	$	—	$	—	$	—	$	—	$	10.1	$	4,445.8
Loans, net of deferred loan fees and costs	237.2		1,635.6		1,552.0		1,930.8		6,098.7		3.5
Less: allowance for credit losses	(2.0)		(13.7)		(12.6)		(12.6)		(49.3)		—
Total loans	235.2		1,621.9		1,539.4		1,918.2		6,049.4		3.5
Other assets acquired through foreclosure, net	—		—		—		—		—		—
Goodwill and other intangible assets, net	—		—		119.7		0.1		—		—
Other assets	1.2		18.3		7.3		8.8		64.3		841.0
Total assets	$	236.4	$	1,640.2	$	1,666.4	$	1,927.1	$	6,123.8	$	5,290.3
Liabilities:
Deposits	$	3,210.1	$	0.1	$	3,771.5	$	—	$	36.9	$	1,084.2
Borrowings and qualifying debt	—		—		—		—		—		393.6
Other liabilities	1.8		52.9		0.1		—		2.8		510.7
Total liabilities	3,211.9		53.0		3,771.6		—		39.7		1,988.5
Allocated equity:	84.5		131.6		317.5		158.5		494.3		509.9
Total liabilities and stockholders' equity	$	3,296.4	$	184.6	$	4,089.1	$	158.5	$	534.0	$	2,498.4
Excess funds provided (used)	3,060.0		(1,455.6)		2,422.7		(1,768.6)		(5,589.8)		(2,791.9)

Income Statement:
Three Months Ended September 30, 2019	(in thousands)
Net interest income (expense)	$	21,974	$	3,394	$	33,932	$	12,845	$	32,935	$	(5,185)
Provision for (recovery of) credit losses	60		(191)		895		1,956		1,210		(197)
Net interest income (expense) after provision for credit losses	21,914		3,585		33,037		10,889		31,725		(4,988)
Non-interest income	84		—		5,422		—		1,708		4,733
Non-interest expense	(9,769)		(1,845)		(12,068)		(2,197)		(11,320)		(18,937)
Income (loss) before income taxes	12,229		1,740		26,391		8,692		22,113		(19,192)
Income tax expense (benefit)	2,813		400		6,070		1,999		5,086		(13,671)
Net income	$	9,416	$	1,340	$	20,321	$	6,693	$	17,027	$	(5,521)

Nine Months Ended September 30, 2019	(in thousands)
Net interest income	$	64,520	$	10,278	$	91,871	$	39,279	$	88,212	$	5,032
Provision for (recovery of) credit losses	27		(136)		2,635		3,587		6,558		803
Net interest income (expense) after provision for credit losses	64,493		10,414		89,236		35,692		81,654		4,229
Non-interest income	268		—		10,946		—		3,915		11,611
Non-interest expense	(27,777)		(5,683)		(33,971)		(6,757)		(31,729)		(45,771)
Income (loss) before income taxes	36,984		4,731		66,211		28,935		53,840		(29,931)
Income tax expense (benefit)	8,506		1,088		15,229		6,655		12,383		(36,828)
Net income	$	28,478	$	3,643	$	50,982	$	22,280	$	41,457	$	6,897

XML

Revenue from Contracts with Customers (Notes)

9 Months Ended

Sep. 30, 2020

Revenue from Contracts with Customers [Abstract]

Revenue from Contract with Customer [Text Block]

14. REVENUE FROM CONTRACTS WITH CUSTOMERS

ASC 606, Revenue from Contracts with Customers, requires revenue to be recognized at an amount that reflects the consideration to which the entity expects to be entitled in exchange for transferring goods or services to a customer. ASC 606 applies to all contracts with customers to provide goods or services in the ordinary course of business, except for contracts that are specifically excluded from its scope. The majority of the Company’s revenue streams including interest income, credit and debit card fees, income from equity investments including warrants and SBIC equity income, income from bank owned life insurance, foreign currency income, lending related income, and gains and losses on sales of investment securities are outside the scope of ASC 606. Revenue streams including service charges and fees, interchange fees on credit and debit cards, and success fees are within the scope of ASC 606.

Disaggregation of Revenue

The following table represents a disaggregation of revenue from contracts with customers for the periods indicated along with the reportable segment for each revenue category:

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Three Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	5,913	$	1,188	$	1,826	$	889	$	930
Debit and credit card interchange (1)	1,597		426		306		167		686
Success fees (2)	38		—		—		—		—
Other income	69		8		6		(1)		18
Total revenue from contracts with customers	$	7,617	$	1,622	$	2,138	$	1,055	$	1,634
Revenues outside the scope of ASC 606 (3)	12,989		149		253		131		747
Total non-interest income	$	20,606	$	1,771	$	2,391	$	1,186	$	2,381

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Nine Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	17,447	$	3,525	$	5,572	$	2,466	$	2,863
Debit and credit card interchange (1)	3,942		990		770		401		1,754
Success fees (2)	423		—		—		—		144
Other income	231		20		15		(6)		59
Total revenue from contracts with customers	$	22,043	$	4,535	$	6,357	$	2,861	$	4,820
Revenues outside the scope of ASC 606 (3)	24,942		408		998		408		1,630
Total non-interest income	$	46,985	$	4,943	$	7,355	$	3,269	$	6,450

(1)Included as part of Card income in the Consolidated Income Statement.

(2)Included as part of Income from equity investments in the Consolidated Income Statement.

(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Three Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	114	$	—	$	963	$	—	$	3	$	—
Debit and credit card interchange (1)	12		—		—		—		—		—
Success fees (2)	—		—		38		—		—		—
Other income	2		—		—		—		35		1
Total revenue from contracts with customers	$	128	$	—	$	1,001	$	—	$	38	$	1
Revenues outside the scope of ASC 606 (3)	6		—		2,125		—		2,886		6,692
Total non-interest income	$	134	$	—	$	3,126	$	—	$	2,924	$	6,693

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Nine Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	308	$	—	$	2,707	$	—	$	6	$	—
Debit and credit card interchange (1)	27		—		—		—		—		—
Success fees (2)	—		—		279		—		—		—
Other income	4		—		—		—		125		14
Total revenue from contracts with customers	$	339	$	—	$	2,986	$	—	$	131	$	14
Revenues outside the scope of ASC 606 (3)	11		—		6,261		—		3,977		11,249
Total non-interest income	$	350	$	—	$	9,247	$	—	$	4,108	$	11,263

(1)Included as part of Card income in the Consolidated Income Statement.

(2)Included as part of Income from equity investments in the Consolidated Income Statement.

(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Three Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	5,888	$	1,226	$	2,036	$	770	$	965
Debit and credit card interchange (1)	1,977		451		440		229		845
Success fees (2)	605		—		—		—		—
Other income	80		8		14		4		19
Total revenue from contracts with customers	$	8,550	$	1,685	$	2,490	$	1,003	$	1,829
Revenues outside the scope of ASC 606 (3)	10,891		136		187		76		88
Total non-interest income	$	19,441	$	1,821	$	2,677	$	1,079	$	1,917

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Nine Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	17,121	$	3,525	$	5,980	$	2,218	$	2,821
Debit and credit card interchange (1)	5,830		1,125		1,200		596		2,878
Success fees (2)	1,125		—		—		—		—
Other income	187		8		8		6		43
Total revenue from contracts with customers	$	24,263	$	4,658	$	7,188	$	2,820	$	5,742
Revenues outside the scope of ASC 606 (3)	24,806		392		738		234		557
Total non-interest income	$	49,069	$	5,050	$	7,926	$	3,054	$	6,299

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Three Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	77	$	—	$	813	$	—	$	1	$	—
Debit and credit card interchange (1)	12		—		—		—		—		—
Success fees (2)	—		—		605		—		—		—
Other income	(3)		—		—		—		35		3
Total revenue from contracts with customers	$	86	$	—	$	1,418	$	—	$	36	$	3
Revenues outside the scope of ASC 606 (3)	(2)		—		4,004		—		1,672		4,730
Total non-interest income	$	84	$	—	$	5,422	$	—	$	1,708	$	4,733

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Nine Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	241	$	—	$	2,333	$	—	$	3	$	—
Debit and credit card interchange (1)	31		—		—		—		—		—
Success fees (2)	—		—		1,125		—		—		—
Other income	2		—		4		—		109		7
Total revenue from contracts with customers	$	274	$	—	$	3,462	$	—	$	112	$	7
Revenues outside the scope of ASC 606 (3)	(6)		—		7,484		—		3,803		11,604
Total non-interest income	$	268	$	—	$	10,946	$	—	$	3,915	$	11,611

(1)Included as part of Card income in the Consolidated Income Statement.

(2)Included as part of Income from equity investments in the Consolidated Income Statement.

(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

Performance Obligations

Many of the services the Company performs for its customers are ongoing, and either party may cancel at any time. The fees for these contracts are dependent upon various underlying factors, such as customer deposit balances, and as such may be considered variable. The Company’s performance obligations for these services are satisfied as the services are rendered and payment is collected on a monthly, quarterly, or semi-annual basis. Other contracts with customers are for services to be provided at a point in time, and fees are recognized at the time such services are rendered. The Company had no material unsatisfied performance obligations as of September 30, 2020. The revenue streams within the scope of ASC 606 are described in further detail below.

Service Charges and Fees

The Company performs deposit account services for its customers, which include analysis and treasury management services, use of safe deposit boxes, check upcharges, and other ancillary services. The depository arrangements the Company holds with its customers are considered day-to-day contracts with ongoing renewals and optional purchases, and as such, the contract duration does not extend beyond the services performed. Due to the short-term nature of such contracts, the Company generally recognizes revenue for deposit related fees as services are rendered. From time to time, the Company may waive certain fees for its customers. The Company considers historical experience when recognizing revenue from contracts with customers, and may reduce the transaction price to account for fee waivers or refunds.

Debit and Credit Card Interchange

When a credit or debit card issued by the Company is used to purchase goods or services from a merchant, the Company earns an interchange fee. The Company considers the merchant its customer in these transactions as the Company provides the merchant with the service of enabling the cardholder to purchase the merchant’s goods or services with increased convenience, and it enables the merchants to transact with a class of customer that may not have access to sufficient funds at the time of purchase. The Company acts as an agent to the payment network by providing nightly settlement services between the network and the merchant. This transmission of data and funds represents the Company’s performance obligation and is performed nightly. As the payment network is in direct control of setting the rates and the Company is acting as an agent, the interchange fee is recorded net of expenses as the services are provided.

Success Fees

Success fees are one-time fees detailed as part of certain loan agreements and are earned immediately upon occurrence of a triggering event. Examples of triggering events include: a borrower obtaining its next round of funding, an acquisition, or completion of a public offering. Success fees are variable consideration as the transaction price can vary and is contingent on the occurrence or non-occurrence of a future event. As the consideration is highly susceptible to factors outside of the Company’s influence and uncertainty about the amount of consideration is not expected to be resolved for an extended period of time, the variable consideration is constrained and is not recognized until the achievement of the triggering event.

Principal versus Agent Considerations

When more than one party is involved in providing goods or services to a customer, ASC 606 requires the Company to determine whether it is the principal or an agent in these transactions by evaluating the nature of its promise to the customer. An entity is a principal and therefore records revenue on a gross basis, if it controls a promised good or service before transferring that good or service to the customer. An entity is an agent and records as revenue the net amount it retains for its agency services if its role is to arrange for another entity to provide the goods or services. The Company most commonly acts as a principal and records revenue on a gross basis, except in certain circumstances. As an example, revenues earned from interchange fees, in which the Company acts as an agent, are recorded as non-interest income, net of the related expenses paid to the principal.

Contract Balances

The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. The Company records contract liabilities, or deferred revenue, when payments from customers are received or due in advance of providing services to customers. The Company generally receives payments for its services during the period or at the time services are provided, therefore, does not have material contract liability balances at period-end. The Company records contract assets or receivables when revenue is recognized prior to receipt of cash from the customer. Accounts receivable totals $1.5 million and $1.6 million at each of the periods ended September 30, 2020 and December 31, 2019, respectively, and are presented in Other assets on the Consolidated Balance Sheets.

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Nature of Operation

Nature of operation

WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.

WAB operates the following full-service banking divisions: ABA, BON, FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services. In addition, the Company has two non-bank subsidiaries: LVSP, which held and managed certain OREO properties, and CSI, a captive insurance company formed and licensed under the laws of the State of Arizona and established as part of the Company's overall enterprise risk management strategy.

Basis of Presentation

Basis of presentation

The accounting and reporting policies of the Company are in accordance with GAAP and conform to practices within the financial services industry. The accounts of the Company and its consolidated subsidiaries are included in the Consolidated Financial Statements.

Recent Accounting Pronouncements

Recent accounting pronouncements

Convertible Debt and Derivatives and Hedging

In August 2020, the FASB issued guidance within ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40). The amendments in this update affect entities that issue convertible instruments and/or contracts indexed to and potentially settled in an entity’s own equity. The new ASU simplifies the convertible accounting framework through elimination of the beneficial conversion and cash conversion accounting models for convertible instruments. It also amends the accounting for certain contracts in an entity’s own equity that are currently accounted for as derivatives because of specific settlement provisions. In addition, the new guidance modifies how particular convertible instruments and certain contracts that may be settled in cash or shares impact the diluted EPS computation. The amendments to Subtopics 470 and 815 are effective for interim and annual reporting periods beginning after December 15, 2021 and are not expected to have a material impact on the Company’s Consolidated Financial Statements.

Income Taxes

In December 2019, the FASB issued guidance within ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in ASU 2019-12 are intended to reduce the cost and complexity of applying ASC 740. The amendments that are applicable to the Company address: 1) franchise and other taxes partially based on income; 2) step-up in basis of goodwill in a business combination; 3) allocation of tax expense in separate entity financial statements; and 4) interim recognition of enactment of tax laws or rate changes. The amendments to Topic 740 are effective for interim and annual reporting periods beginning after December 15, 2020 and are not expected to have a material impact on the Company’s Consolidated Financial Statements.

Recently adopted accounting guidance

Measurement of Credit Losses on Financial Instruments

In June 2016, the FASB issued guidance within ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The new standard significantly changes the impairment model for most financial assets that are measured at amortized cost, including off-balance sheet credit exposures, from an incurred loss model to an expected loss model. The amendments in ASU 2016-13 to Topic 326, Financial Instruments - Credit Losses, require that an organization measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The ASU also requires enhanced disclosures, including qualitative and quantitative disclosures that provide additional information about the amounts recorded in the financial statements. Additionally, the ASU amends the accounting for credit losses on AFS debt securities and purchased financial assets with credit deterioration.

The Company adopted the amendments within ASU 2016-13 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. The Company's financial results for reporting periods

beginning after January 1, 2020 are presented in accordance with ASC 326, while prior-period amounts continue to be reported in accordance with legacy GAAP. The Company recorded a cumulative effect adjustment to retained earnings, which resulted in a total decrease to retained earnings of $24.9 million as of January 1, 2020. This adjustment was due primarily to expected total losses under the new model in the Company's loan portfolio and, to a lesser extent, its off-balance sheet credit exposures.

The Company applied the prospective transition approach for loans purchased with credit deterioration that were previously classified as purchased credit impaired and previously accounted for under ASC 310-30. In accordance with the new standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. As of January 1, 2020, the amortized cost basis of the PCD loans was adjusted to reflect an allowance for credit losses of $3.3 million. The remaining noncredit discount (based on the adjusted amortized cost basis) related to PCD loans of $1.1 million will be accreted into interest income at the loan's effective interest rate as of January 1, 2020. The Company has elected not to maintain its pools of loans accounted for under ASC 310-30.

The Company applied the prospective transition approach for debt securities for which other-than-temporary impairment had been recognized prior to January 1, 2020. As a result, the amortized cost basis remains the same before and after the effective date. The effective interest rate on these debt securities was not changed. Recoveries of amounts previously written off relating to improvements in cash flows after January 1, 2020 will be recorded in earnings when received.

The following table summarizes the estimated allowance for credit losses related to financial assets and off-balance sheet credit exposures and the corresponding impacts on the deferred tax asset and retained earnings upon adoption of ASC 326:

	January 1, 2020
	Pre-ASC 326 Adoption		Post-ASC 326 Adoption		Impact of ASC 326 Adoption
	(in thousands)
Assets:
Allowance for credit losses on HTM securities	$	—	$	2,646	$	2,646
Allowance for credit losses on loans	167,797		186,925		19,128
Deferred tax asset	18,025		26,675		8,650
Liabilities:
Off-balance sheet credit exposures	$	8,955	$	24,044	$	15,089
Equity:
Retained earnings	$	1,680,317	$	1,655,370	$	(24,947)

Management has elected to take advantage of the capital relief option that delays the estimated impact of the adoption of ASC 326 on regulatory capital by up to two years, with a three-year transition period to phase out the cumulative benefit to regulatory capital provided during the two-year delay.

In April 2019, the FASB issued guidance within ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. The amendments in ASU 2019-04 clarify or correct the guidance in these Topics. With respect to Topic 326, ASU 2019-04 addresses a number of issues as it relates to the CECL standard including consideration of accrued interest, recoveries, variable-rate financial instruments, prepayments, and extension and renewal options, among other things, in the measurement of expected credit losses. The amendments to Topic 326 were adopted concurrently with ASU 2016-13 and did not have a significant impact on the Company’s Consolidated Financial Statements. With respect to Topic 815, Derivatives and Hedging, ASU 2019-04 clarifies issues related to partial-term hedges, hedged debt securities, and transitioning from a quantitative method of assessing hedge effectiveness to a more simplified method. The Company does not have partial-term hedges or any hedged debt securities and the transition issues discussed in the ASU 2019-04 are not applicable to the Company. Accordingly, the amendments to Topic 815 did not have an impact on the Company's Consolidated Financial Statements. With respect to Topic 825, Financial Instruments, on recognizing and measuring financial instruments, ASU 2019-04 addresses: 1) the scope of the guidance; 2) the requirement for remeasurement under ASC 820 when using the measurement alternative for equity securities without readily determinable fair values; 3) certain disclosure requirements; and 4) which equity securities have to be remeasured at historical exchange rates. The amendments to Topic 825 were effective January 1, 2020 and did not have a material impact on the Company’s Consolidated Financial Statements.

In May 2019, the FASB issued guidance within ASU 2019-05, Financial Instruments - Credit Losses, to provide entities with an option to irrevocably elect the fair value option for eligible financial assets measured at amortized cost. The election is to be applied on an instrument-by-instrument basis upon adoption of Topic 326 and is not available for either AFS or HTM debt securities. The amendments in ASU 2019-05 should be applied on a modified-retrospective basis through a cumulative-effect

adjustment to the opening balance of retained earnings as of the date that an entity adopts the amendments in ASU 2016-13. The Company did not elect this fair value option as part of its adoption of ASU 2016-13 on January 1, 2020.

In November 2019, the FASB issued guidance within ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments—Credit Losses. The amendments in ASU 2019-11 clarify or address specific issues about certain aspects of the amendments in ASU 2016-13. These issues include measurement and reporting requirements related to: 1) the allowance for credit losses for purchased assets with credit deterioration; 2) prepayment assumptions on existing troubled debt restructurings; 3) extension of disclosure relief for accrued interest receivable balances; and 4) expected credit losses on collateralized financial assets. The adoption of ASU 2019-11 is concurrent with ASU 2016-13 and, adoption of these amendments on January 1, 2020, did not have a significant impact on the Company's Consolidated Financial Statements.

Fair Value Measurements

In August 2018, the FASB issued guidance within ASU 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. The amendments within ASU 2018-13 remove, modify, and supplement the disclosure requirements for fair value measurements. Disclosure requirements that were removed include: 1) the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy; 2) the policy for timing of transfers between levels; and 3) the valuation processes for Level 3 fair value measurements. The amendments clarify that the measurement uncertainty disclosure is intended to communicate information about the uncertainty in measurement as of the reporting date. Additional disclosure requirements include: 1) the changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period; and 2) the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. With the exception of the above additional disclosure requirements, which will be applied prospectively, all other amendments should be applied retrospectively to all periods presented upon their effective date. The amendments in this ASU did not have a significant impact on the Company's Consolidated Financial Statements.

Internal-Use Software

In August 2018, the FASB issued guidance within ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40). The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). Accordingly, the amendments in this Update require an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The amendments in this Update also require that the capitalized implementation costs of a hosting arrangement that is a service contract be expensed over the term of the hosting arrangement. Presentation requirements include: 1) expense related to the capitalized implementation costs should be presented in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement; 2) payments for capitalized implementation costs in the statement of cash flows should be classified in the same manner as payments made for fees associated with the hosting element; and 3) capitalized implementation costs in the statement of financial position should be presented in the same line item that a prepayment for the fees of the associated hosting arrangement would be presented. The adoption of this guidance did not have a significant impact on the Company's Consolidated Financial Statements.

Reference Rate Reform

In March 2020, the FASB issued guidance within ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, in response to the scheduled discontinuation of LIBOR on December 31, 2021. The amendments in this Update provide optional guidance designed to provide relief from the accounting analysis and impacts that may otherwise be required for modifications to agreements (e.g., loans, debt securities, derivatives, borrowings) necessitated by reference rate reform.

The following optional expedients for applying the requirements of certain Topics or Industry Subtopics in the Codification are permitted for contracts that are modified because of reference rate reform and that meet certain scope guidance: 1) modifications of contracts within the scope of Topics 310, Receivables, and 470, Debt, should be accounted for by prospectively adjusting the effective interest rate; 2) modifications of contracts within the scope of Topic 842, Leases, should be accounted for as a continuation of the existing contracts with no reassessments of the lease classification and the discount rate or remeasurements of lease payments that otherwise would be required under this Topic for modifications not accounted for as separate contracts; 3) modifications of contracts do not require an entity to reassess its original conclusion about whether that contract contains an embedded derivative that is clearly and closely related to the economic characteristics and risks of the host contract under Subtopic 815-15, Derivatives and Hedging- Embedded Derivatives; and 4) for other Topics or Industry Subtopics in the Codification, the amendments in this Update also include a general principle that permits an entity to consider

contract modifications due to reference rate reform to be an event that does not require contract remeasurement at the modification date or reassessment of a previous accounting determination. An entity may make a one-time election to sell, transfer, or both sell and transfer debt securities classified as held to maturity that reference a rate affected by reference rate reform and that are classified as held to maturity before January 1, 2020.

The amendments in this Update are effective for all entities as of March 12, 2020 through December 31, 2022.

Use of Estimates

Use of estimatesThe preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management's estimates and judgments are ongoing and are based on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities, as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from those estimates and assumptions used in the Consolidated Financial Statements and related notes. Material estimates that are susceptible to significant changes in the near term, particularly to the extent that economic conditions worsen or persist longer than expected in an adverse state, relate to: the determination of the allowance for credit losses; certain assets and liabilities carried at fair value; and accounting for income taxes.

Principles of Consolidation

Principles of consolidation

As of September 30, 2020, WAL has the following significant wholly-owned subsidiaries: WAB and eight unconsolidated subsidiaries used as business trusts in connection with the issuance of trust-preferred securities.

The Bank has the following significant wholly-owned subsidiaries: WABT, which holds certain investment securities, municipal and nonprofit loans, and leases; WA PWI, which holds interests in certain limited partnerships invested primarily in low income housing tax credits and small business investment corporations; Helios Prime, which holds interests in certain limited partnerships invested in renewable energy projects; and BW Real Estate, Inc., which operates as a real estate investment trust and holds certain of WAB's real estate loans and related securities.

The Company does not have any other significant entities that should be consolidated. All significant intercompany balances and transactions have been eliminated in consolidation.

Reclassifications

Reclassifications

Certain amounts reported in prior periods may have been reclassified in the Consolidated Financial Statements to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.

Investment Securities

Investment securities

Investment securities include debt and equity securities. Debt securities may be classified as HTM, AFS, or trading. The appropriate classification is initially decided at the time of purchase. Securities classified as HTM are those debt securities that the Company has both the intent and ability to hold to maturity regardless of changes in market conditions, liquidity needs, or general economic conditions. The sale of an HTM security within three months of its maturity date or after the majority of the principal outstanding has been collected is considered a maturity for purposes of classification and disclosure. Securities classified as AFS are securities that the Company intends to hold for an indefinite period of time, but not necessarily to

maturity. Any decision to sell a security classified as AFS would be based on various factors, including significant movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, decline in credit quality, and regulatory capital considerations.

HTM securities are carried at amortized cost. AFS securities are carried at their estimated fair value, with unrealized holding gains and losses reported in other comprehensive income, net of tax. When AFS debt securities are sold, the unrealized gains or losses are reclassified from OCI to non-interest income. Trading securities are carried at their estimated fair value, with changes in fair value reported in earnings as part of non-interest income.

Equity securities are carried at their estimated fair value, with changes in fair value reported in earnings as part of non-interest income.

Interest income is recognized based on the coupon rate and includes the amortization of purchase premiums and the accretion of purchase discounts. Premiums and discounts on investment securities are generally amortized or accreted over the contractual life of the security using the interest method. For the Company's mortgage-backed securities, amortization or accretion of premiums or discounts are adjusted for anticipated prepayments. Gains and losses on the sale of investment securities are recorded on the trade date and determined using the specific identification method.

A debt security is placed on nonaccrual status at the time its principal or interest payments become 90 days past due. Interest accrued but not received for a security placed on nonaccrual is reversed against interest income.

Credit Loss, Financial Instrument [Policy Text Block]

Allowance for credit losses on investment securities

On January 1, 2020, the Company adopted the amendments within ASU 2016-13, which replaces the legacy US GAAP OTTI model with a credit loss model. For discussion of the former OTTI methodology, refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2019. The credit loss model under ASC 326-20, applicable to HTM debt securities, requires recognition of lifetime expected credit losses through an allowance account at the time the security is purchased. The Company measures expected credit losses on its HTM debt securities on a collective basis by major security type. The Company's HTM securities portfolio consists of low income housing tax-exempt bonds, which share similar risk characteristics with the Company's CRE, non-owner occupied or construction and land loan pools, given the similarity in underlying assets or collateral. Accordingly, expected credit losses on HTM securities are estimated using the same models and approaches as these loan pools, which utilize risk parameters (probability of default, loss given default, and exposure at default) in the measurement of expected credit losses. The historical data used to estimate probability of default and severity of loss in the event of default is derived or obtained from internal and external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical losses. Accrued interest receivable on the HTM securities, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses.

The credit loss model under ASC 326-30, applicable to AFS debt securities, requires recognition of credit losses through an allowance account, but retains the concept from the OTTI model that credit losses are recognized once securities become impaired. For AFS debt securities, a decline in fair value due to credit loss results in recognition of an allowance for credit losses. Impairment may result from credit deterioration of the issuer or collateral underlying the security. The assessment of determining if a decline in fair value resulted from a credit loss is performed at the individual security level. Among other factors, the Company considers: 1) the extent to which the fair value is less than the amortized cost basis; 2) the financial condition and near term prospects of the issuer, including consideration of relevant financial metrics or ratios of the issuer; 3) any adverse conditions related to an industry or geographic area of an issuer; 4) any changes to the rating of the security by a rating agency; and 5) any past due principal or interest payments from the issuer. If an assessment of the above factors indicates that a credit loss exists, the Company records an allowance for credit losses for the excess of the amortized cost basis over the present value of cash flows expected to be collected, limited to the amount that the security's fair value is less than its amortized cost basis. Subsequent changes in the allowance for credit losses are recorded as a provision for (or reversal of) credit loss expense. Interest accruals and amortization and accretion of premiums and discounts are suspended when the credit loss is recognized in earnings. Any interest received after the security has been placed on nonaccrual status is recognized on a cash basis. Accrued interest receivable on AFS securities, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses.

For each AFS security in an unrealized loss position, the Company also considers: 1) its intent to retain the security until anticipated recovery of the security's fair value; and 2) whether it is more-likely-than not that the Company would be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the debt security is written down to its fair value and the write-down is charged against the allowance for credit losses with any incremental impairment recorded in earnings.

Writeoffs are made through reversal of the allowance for credit losses and direct writeoff of the amortized cost basis of the AFS security. The Company considers the following events to be indicators that a writeoff should be taken: 1) bankruptcy of the issuer; 2) significant adverse event(s) affecting the issuer in which it is improbable for the issuer to make its remaining payments on the security; and 3) significant loss of value of the underlying collateral behind a security. Recoveries on debt securities, if any, are recorded in the period received.

Off-balance sheet credit exposures, including unfunded loan commitments

The Company maintains a separate allowance for credit losses on off-balance-sheet credit exposures, including unfunded loan commitments, financial guarantees, and letters of credit, which is classified in other liabilities on the Consolidated Balance Sheet. The allowance for credit losses on off-balance sheet credit exposures is adjusted through increases or decreases to the provision for credit loss expense. The estimate includes consideration of the likelihood that funding will occur, an estimate of exposure at default that is derived from utilization rate assumptions using a non-modeled approach, and PD and LGD estimates that are derived from the same models and approaches for the Company's other loan portfolio segments described above as these unfunded commitments share similar risk characteristics with these loan portfolio segments. No credit loss estimate is reported for off-balance sheet credit exposures that are unconditionally cancellable by the Company or for undrawn amounts under such arrangements that may be drawn prior to the cancellation of the arrangement.

Restricted Stock

Restricted stockWAB is a member of the Federal Reserve System and, as part of its membership, is required to maintain stock in the FRB in a specified ratio to its capital. In addition, WAB is a member of the FHLB system and, accordingly, maintains an investment in capital stock of the FHLB based on the borrowing capacity used. These investments are considered equity securities with no actively traded market. Therefore, the shares are considered restricted investment securities. These investments are carried at cost, which is equal to the value at which they may be redeemed. The dividend income received from the stock is reported in interest income. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. No impairment has been recorded to date.

Nonmortgage Loan Held-for-sale

Loans held for sale

Loans held for sale consist of loans that the Company originates (or acquires) and intends to sell. These loans are carried at the lower of aggregate cost or fair value. Fair value is determined based on quoted fair market values or, when not available, discounted cash flows or appraisals of underlying collateral or the credit quality of the borrower.

Loans, Interest and Fees from Loans

Loans held for investment

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost. Amortized cost is the amount of unpaid principal, adjusted for unamortized net deferred fees and costs, premiums and discounts, and writeoffs. In addition, the amortized cost of loans subject to a fair value hedge are adjusted for changes in value attributable to the effective portion of the hedged benchmark interest rate risk.

The Company may also purchase loans or acquire loans through a business combination. At the purchase or acquisition date, loans are evaluated to determine if there has been more than insignificant credit deterioration since origination. Loans that have experienced more than insignificant credit deterioration since origination are referred to as PCD loans. In its evaluation of whether a loan has experienced more than insignificant deterioration in credit quality since origination, the Company takes into consideration loan grades, loan-to-values greater than policy limits, past due and nonaccrual status, and TDR loans. The Company may also consider external credit rating agency ratings for borrowers and for non-commercial loans, FICO score or band, probability of default levels, number of times past due, and standard deviations corresponding to FICO score or band. The initial estimate of credit losses on PCD loans is added to the purchase price on the acquisition date to establish the initial amortized cost basis of the loan; accordingly, the initial recognition of expected credit losses has no impact on net income. When the initial measurement of expected credit losses on PCD loans are calculated on a pooled loan basis, the expected credit losses are allocated to each loan within the pool. Any difference between the initial amortized cost basis and the unpaid principal balance of the loan represents a noncredit discount or premium, which is accreted (or amortized) into interest income over the life of the loan. Subsequent changes to the allowance for credit losses on PCD loans are recorded through the provision for credit losses. For purchased loans that are not deemed to have experienced more than insignificant credit deterioration since origination, any discounts or premiums included in the purchase price are accreted (or amortized) over the contractual life of the individual loan. For additional information, see "Note 3. Loans, Leases and Allowance for Credit Losses" of these Notes to Unaudited Consolidated Financial Statements.

In applying the effective yield method to loans, the Company generally applies the contractual method whereby loan fees collected for the origination of loans less direct loan origination costs (net of deferred loan fees), as well as premiums and discounts and certain purchase accounting adjustments, are amortized over the contractual life of the loan through interest income. If a loan has scheduled payments, the amortization of the net deferred loan fee is calculated using the interest method over the contractual life of the loan. If a loan does not have scheduled payments, such as a line of credit, the net deferred loan fee is recognized as interest income on a straight-line basis over the contractual life of the loan commitment. Commitment fees based on a percentage of a customer’s unused line of credit and fees related to standby letters of credit are recognized over the commitment period. When loans are repaid, any remaining unamortized balances of premiums, discounts, or net deferred fees are recognized as interest income.

Conversely, with respect to loans originated under the PPP, the Company incorporates projected prepayments in calculating effective yield. As a result, net deferred fees are accreted into interest income faster than would be the case when applying the contractual method based upon the timing and amount of estimated forgiven loan balances. The Company expects that a

majority of PPP loans will qualify for forgiveness under the SBA program, based on requested loan amounts largely representing qualifying expenses at the time of application.

Nonaccrual loans

When a borrower discontinues making payments as contractually required by the note, the Company must determine whether it is appropriate to continue to accrue interest. The Company ceases accruing interest income when the loan has become delinquent by more than 90 days or when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely. Past due status is based on the contractual terms of the loan. The Company may decide to continue to accrue interest on certain loans more than 90 days delinquent if the loans are well secured by collateral and in the process of collection.

For all loan types, when a loan is placed on nonaccrual status, all interest accrued but uncollected is reversed against interest income in the period in which the status is changed, and the Company makes a loan-level decision to apply either the cash basis or cost recovery method. The Company may recognize income on a cash basis when a payment is received and only for those nonaccrual loans for which the collection of the remaining principal balance is not in doubt. Under the cost recovery method, subsequent payments received from the customer are applied to principal and generally no further interest income is recognized until the principal has been paid in full or until circumstances have changed such that payments are again consistently received as contractually required. Loans are returned to accrual status when all of the principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Troubled Debt Restructured Loans

A TDR loan is a loan on which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. The evaluation is performed under the Company's internal underwriting policy. The loan terms that may be modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the contractual restructured terms for a reasonable period of time (generally six months), and the ultimate collectability of the total contractual restructured principal and interest is no longer in doubt. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.

The CARES Act, signed into law on March 27, 2020, permits financial institutions to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 that would otherwise be characterized as TDRs and suspend any determination related thereto if (i) the loan modification is made between March 1, 2020 and the earlier of December 31, 2020 or 60 days after the end of the coronavirus emergency declaration and (ii) the applicable loan was not more than 30 days past due as of December 31, 2019. In addition, federal bank regulatory authorities have issued guidance to encourage financial institutions to make loan modifications for borrowers affected by COVID-19 and have assured financial institutions that they will neither receive supervisory criticism for such prudent loan modifications, nor be required by examiners to automatically categorize COVID-19-related loan modifications as TDRs. The Company is applying this guidance to qualifying loan modifications.

Credit quality indicators

Loans are regularly reviewed to assess credit quality indicators and to determine appropriate loan classification and grading in accordance with applicable bank regulations. The Company’s risk rating methodology assigns risk ratings ranging from 1 to 9, where a higher rating represents higher risk. The Company differentiates its loan segments based on shared risk characteristics for which expected credit loss is measured on a pool basis.

The nine risk rating categories can be generally described by the following groupings for loans:

"Pass" (grades 1 through 5): The Company has five pass risk ratings, which represent a level of credit quality that ranges from no well-defined deficiency or weakness to some noted weakness; however, the risk of default on any loan classified as pass is expected to be remote. The five pass risk ratings are described below:

Minimal risk. These consist of loans that are fully secured either with cash held in a deposit account at the Bank or by readily marketable securities with an acceptable margin based on the type of security pledged.

Low risk. These consist of loans with a high investment grade rating equivalent.

Modest risk. These consist of loans where the credit facility greatly exceeds all policy requirements or with policy exceptions that are appropriately mitigated. A secondary source of repayment is verified and considered sustainable. Collateral coverage on these loans is sufficient to fully cover the debt as a tertiary source of repayment. Debt of the borrower is low relative to borrower’s financial strength and ability to pay.

Average risk. These consist of loans where the credit facility meets or exceeds all policy requirements or with policy exceptions that are appropriately mitigated. A secondary source of repayment is available to service the debt. Collateral coverage is more than adequate to cover the debt. The borrower exhibits acceptable cash flow and moderate leverage.

Acceptable risk. These consist of loans with an acceptable primary source of repayment, but a less than preferable secondary source of repayment. Cash flow is adequate to service debt, but there is minimal excess cash flow. Leverage is moderate or high.

"Special mention" (grade 6): Generally these are assets that possess potential weaknesses that warrant management's close attention. These loans may involve borrowers with adverse financial trends, higher debt-to-equity ratios, or weaker liquidity positions, but not to the degree of being considered a “problem loan” where risk of loss may be apparent. Loans in this category are usually performing as agreed, although there may be non-compliance with financial covenants.

"Substandard" (grade 7): These assets are characterized by well-defined credit weaknesses and carry the distinct possibility that the Company will sustain some loss if such weakness or deficiency is not corrected. All loans 90 days or more past due and all loans on nonaccrual status are considered at least "Substandard," unless extraordinary circumstances would suggest otherwise.

"Doubtful" (grade 8): These assets have all the weaknesses inherent in those classified as "Substandard" with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable, but because of certain known factors that may work to the advantage and strengthening of the asset (for example, capital injection, perfecting liens on additional collateral and refinancing plans), classification as an estimated loss is deferred until a more precise status may be determined. Due to the high probability of loss, loans classified as "Doubtful" are placed on nonaccrual status.

"Loss" (grade 9): These assets are considered uncollectible and having such little recoverable value that it is not practical to defer writing off the asset. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practicable or desirable to defer writing off the asset, even though partial recovery may be achieved in the future.

Allowance for Credit Losses

Allowance for credit losses on loans

On January 1, 2020, the Company adopted the amendments within ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which changes the impairment model for most financial assets carried at amortized cost from an incurred loss model to an expected loss model. The discussion below reflects the current expected credit loss model methodology. For discussion of the former incurred loss model methodology, refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2019. Credit risk is inherent in the business of extending loans and leases to borrowers and is continuously monitored by management and reflected within the allowance for credit losses for loans. The allowance for credit losses is an estimate of life-of-loan losses for the Company's loans held for investment. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of a loan to present the net amount expected to be collected on the loan. Accrued interest receivable on loans, which is included in other assets on the Consolidated Balance Sheet, is excluded from the estimate of expected credit losses. Expected recoveries of amounts previously written off and expected to be written off are included in the valuation account and may not exceed the aggregate of amounts previously written off and expected to be written off. The Company formally re-evaluates and establishes the appropriate level of the allowance for credit losses on a quarterly basis.

Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. In future periods, evaluations of the overall loan portfolio or particular segments of the loan portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the allowance for credit losses and credit loss expense in those future periods. The allowance level is influenced by loan volumes, mix, loan performance metrics, asset quality characteristics, delinquency status, historical credit loss experience, and the inputs and assumptions in economic forecasts, such as macroeconomic inputs, length of reasonable and supportable forecast periods, and reversion methods. The methodology for estimating the amount of expected credit losses reported in the allowance for credit losses has two basic components: first, an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans and; second, a pooled component for estimated expected credit losses for pools of loans that share similar risk characteristics.

Loans that do not share risk characteristics with other loans

Loans that do not share risk characteristics with other loans are evaluated on an individual basis. Loans evaluated individually are not included in the collective evaluation. These loans consist of loans with unique features or loans that no longer share risk characteristics with other pooled loans. The process for determining whether a loan should be evaluated on an individual basis begins with determination of credit rating. All loans graded substandard or worse and all PCD loans, irrespective of credit rating, are specifically reviewed for loss potential and, when deemed appropriate, are assigned a reserve based on an individual evaluation. For these loans, the allowance is based primarily on the fair value of the underlying collateral, utilizing independent third-party appraisals.

Loans that share similar risk characteristics with other loans

In estimating the component of the allowance for credit losses for loans that share similar risk characteristics with other loans, such loans are segregated into loan segments. The Company's primary portfolio segments have changed due to adoption of the amendments within ASU 2016-13 to align with the methodology applied in estimating the allowance for credit losses under CECL. Loans are designated into loan segments based on loans pooled by product types, business lines, and similar risk characteristics or areas of risk concentration.

In determining the allowance for credit losses, the Company derives an estimate of expected credit losses primarily using an expected loss methodology that incorporates risk parameters (probability of default, loss given default, and exposure at default), which are derived from various vendor models, internally-developed statistical models, or non-statistical estimation approaches. Probability of default is projected in these models or estimation approaches using multiple economic scenarios, whose outcomes are weighted based on the Company's economic outlook and were developed to incorporate relevant information about past events, current conditions, and reasonable and supportable forecasts. With the exception of the Company's residential loan segment, the Company's PD models share a common definition of default, which include loans that are 90 days past due, on nonaccrual status, have a writeoff, or obligor bankruptcy. Input reversion is used for all loan segment models, except for the commercial and industrial and CRE, owner-occupied loan segments. Output reversion is used for the commercial and industrial and CRE, owner-occupied segments by incorporating, after the forecast period, a one-year linear reversion to the long-term reversion rate in year three through the remaining life of the loans within the respective segments. LGDs are typically derived from the Company's historical loss experience. However, for the residential, warehouse lending, and municipal and nonprofit loan segments, where the Company has either zero (or near zero) losses, or has a limited loss history through the last economic downturn, certain non-modeled methodologies are employed. Factors utilized in calculating average LGD vary for each loan segment and are further described below. Exposure at default refers to the Company's exposure to loss at the time of borrower default and is calculated using an amortization schedule based on contractual loan terms, adjusted for a prepayment rate assumption. For most of the Company's loan segments, prepayment rate assumptions are based on a non-modeled approach that calculates the number of loans that were prepaid in full during the period divided by the total number of loans outstanding at the beginning of the period. Prepayment trends are sensitive to interest rates and the macroeconomic environment. Fixed rate loans are more influenced by interest rates, whereas variable rate loans are more influenced by the macroeconomic environment. After the quantitative expected loss estimates are calculated, management then adjusts these estimates to incorporate considerations of current trends and conditions that are not captured in the quantitative loss estimates, through the use of qualitative and/or environmental factors.

The following provides credit quality indicators and risk elements most relevant in monitoring and measuring the allowance for credit losses for each of the loan portfolio segments identified:

Commercial and industrial

The commercial and industrial portfolio segment is comprised of commercial loans that are not collateralized by real estate. The source of repayment of these loans is generally expected to be the income that is generated from the business. The models used to estimate expected credit losses for this loan segment include a combination of a vendor model and an internally-developed model. These models incorporate both market level and company-specific factors such as financial statement variables, adjusted for the current stage of the credit cycle and for the Company's loan performance data such as delinquency, utilization, maturity, and size of the loan commitment under specific macroeconomic scenarios to produce a probability of default. Macroeconomic variables include the Dow Jones Index, credit spread between the BBB Bond Yield and 10-Year Treasury Bond Yield, unemployment rate, and CBOE VIX Index quarterly high. LGD and the prepayment rate assumption for EAD for this loan segment are driven by unemployment levels.

Commercial real estate, owner-occupied

The CRE, owner-occupied portfolio segment is comprised of commercial loans that are collateralized by real estate, where the primary source of repayment is the business that occupies the property. These loans are typically entered into for the purpose of providing real estate finance or improvement. The primary source of repayment of these loans is the income generated by the business and where rental or sale of the property may provide secondary support for the loan. These loans are sensitive to general economic conditions as well as the market valuation of CRE properties. The probability of default estimate for this loan segment is modeled using the same model as the commercial and industrial loan segment. LGD for this loan segment is driven by property appreciation and the prepayment rate assumption for EAD is driven by unemployment levels.

Commercial real estate, non-owner occupied

The CRE, non-owner occupied segment is comprised of loans that are collateralized by real estate, where the owner is not the primary tenant. These loans are typically entered into for the purpose of financing or the improvement of commercial investment properties. The primary source of repayment of these loans are the rents paid by tenants and where the sale of the property may provide secondary support for the loan. These loans are sensitive to the market valuation of CRE properties, rental rates, and general economic conditions. The vendor model used to estimate expected credit losses for this loan segment projects probabilities of default and exposure at default based on multiple macroeconomic scenarios by modeling how macroeconomic conditions affect the commercial real estate market. Real estate market factors utilized in this model include vacancy rate, rental growth rate, net operating income growth rate, and commercial property price changes for each specific property type. The model then incorporates loan and property-level characteristics including debt coverage, leverage, collateral size, seasoning, and property type. LGD for this loan segment is derived from a non-modeled approach that is driven by property appreciation and the prepayment rate assumption for EAD is driven by the property appreciation for fixed rate loans and unemployment levels for variable rate loans.

Residential

The residential loan portfolio segment is comprised of loans collateralized primarily by first liens on 1-4 residential family properties and home equity lines of credit that are collateralized by either first liens or junior liens on residential properties. The primary source of repayment of these loans is the value of the property and the capacity of the owner to make payments on the loan. Unemployment rates and the market valuation of residential properties will impact the ultimate repayment of these loans. The residential mortgage loan model is a vendor model that projects probability of default, loss given default severity, prepayment rate, and exposure at default to calculate expected losses. The model is intended to capture the borrower's payment behavior during the lifetime of the residential loan by incorporating loan level characteristics such as loan type, coupon, age, loan-to-value, and credit score and economic conditions such as Home Price Index, interest rate, and unemployment rate. A default event for residential loans is defined as 60 days or more past due, with property appreciation as the driver for LGD results. The prepayment rate assumption for exposure at default for residential loans is based on industry prepayment history.

Probability of default for HELOCs is derived from an internally-developed model that projects PD by incorporating loan level information such as FICO score, lien position, balloon payments, and macroeconomic conditions such as property appreciation. LGD for this loan segment is driven by property appreciation and lien position. Exposure at default for HELOCs is calculated based on utilization rate assumptions using a non-modeled approach and incorporates management judgment.

Construction and land development

The construction and land portfolio segment is comprised of loans collateralized by land or real estate, which are entered into for the purpose of real estate development. The primary source of repayment of loans is the eventual sale or refinance of the completed project and where claims on the property provide secondary support for the loan. These loans are impacted by the market valuation of CRE and residential properties and general economic conditions that have a higher sensitivity to real estate markets compared to other real estate loans. Default risk of a property is driven by loan-specific drivers, including loan-to-value, maturity, origination date, and the metropolitan statistical area ("MSA") in which the property is located, among other items. The variables used in the internally-developed model include loan level drivers such as origination loan-to-value, loan maturity, and macroeconomic drivers such as property appreciation, MSA level unemployment rate, and national GDP growth. LGD for this loan segment is driven by property appreciation. The prepayment rate assumption for EAD is driven by the property appreciation for fixed rate loans and unemployment levels for variable rate loans.

Warehouse lending

The warehouse lending portfolio segment consists of loans that have a monitored borrowing base to mortgage companies and similar lenders. These loans are collateralized by real estate notes and mortgages or mortgage servicing rights and the borrowing base of these loans is tightly monitored and controlled by the Company. The primary support for the loan takes the

form of pledged collateral, with secondary support provided by the capacity of the financial institution. The collateral-driven nature of these loans distinguish them from traditional commercial and industrial loans. These loans are impacted by interest rate shocks, residential lending rates, prepayment assumptions, and general real estate stress. As a result of the unique loan characteristics, limited historical default and loss experience, and the collateral nature of this loan portfolio segment, the Company uses a non-modeled approach to estimate expected credit losses, leveraging grade information, grade migration history, and management judgment.

Municipal and nonprofit

The municipal and nonprofit portfolio segment consists of loans to local governments, government-operated utilities, special assessment districts, hospitals, schools and other nonprofits. These loans are generally, but not exclusively, entered into for the purpose of financing real estate investment or for refinancing existing debt. Loans are supported by taxes or utility fees, and in some cases tax liens on real estate, operating revenue of the institution, or other collateral support the loans. Unemployment rates and the market valuation of residential properties have an effect on the tax revenues supporting these loans; however, these loans tend to be less cyclical in comparison to similar commercial loans as these loans rely on diversified tax bases. The Company uses a non-modeled approach to estimate expected credit losses, leveraging grade information and historical municipal default rates.

Other

This portfolio consists of those loans not already captured in one of the aforementioned loan portfolio segments, which include, but may not be limited to, overdraft lines for treasury services, credit cards, consumer loans not collateralized by real estate, and small business loans collateralized by residential real estate. The consumer and small business loans are supported by the capacity of the borrower and the valuation of any collateral. General economic factors such as unemployment will have an effect on these loans. The Company uses a non-modeled approach to estimate expected credit losses, leveraging average historical default rates. LGD for this loan segment is driven by unemployment levels and lien position. The prepayment rate assumption for EAD is driven by the BBB corporate spread for fixed rate loans and unemployment levels for variable rate loans.

Lessee, Leases [Policy Text Block]

Leases (lessee)

At inception, contracts are evaluated to determine whether the contract constitutes a lease agreement. For contracts that are determined to be an operating lease, a corresponding ROU asset and operating lease liability are recorded in separate line items on the Consolidated Balance Sheet. A ROU asset represents the Company’s right to use an underlying asset during the lease term and a lease liability represents the Company’s commitment to make contractually obligated lease payments. Operating lease ROU assets and liabilities are recognized at the commencement date of the lease and are based on the present value of lease payments over the lease term. The measurement of the operating lease ROU asset includes any lease payments made and is reduced by lease incentives that are paid or are payable to the Company. Variable lease payments that depend on an index or rate such as the Consumer Price Index are included in lease payments based on the rate in effect at the commencement date of the lease. Lease payments are recognized on a straight-line basis as part of occupancy expense over the lease term.

As the rate implicit in the lease is not readily determinable, the Company's incremental collateralized borrowing rate is used to determine the present value of lease payments. This rate gives consideration to the applicable FHLB collateralized borrowing rates and is based on the information available at the commencement date. The Company has elected to apply the short-term lease measurement and recognition exemption to leases with an initial term of 12 months or less; therefore, these leases are not recorded on the Company’s Consolidated Balance Sheet, but rather, lease expense is recognized over the lease term on a straight-line basis. The Company’s lease agreements may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that the options will be exercised.

In addition to the package of practical expedients, the Company also elected the practical expedient that allows lessees to make an accounting policy election to not separate non-lease components from the associated lease component, and instead account for them all together as part of the applicable lease component. This practical expedient can be elected separately for each underlying class of asset. The majority of the Company’s non-lease components such as common area maintenance, parking, and taxes are variable, and are expensed as incurred. Variable payment amounts are determined in arrears by the landlord depending on actual costs incurred.

Goodwill and Other Intangible Assets

Goodwill and other intangible assets

The Company records as goodwill the excess of the purchase price in a business combination over the fair value of the identifiable net assets acquired in accordance with applicable guidance. The Company performs its annual goodwill and intangibles impairment tests as of October 1 each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. The Company can first elect to assess, through qualitative factors, whether it is more likely than not that goodwill is impaired. If the qualitative assessment indicates potential impairment, a quantitative impairment test is necessary. If, based on the quantitative test, a reporting unit's carrying amount exceeds its fair value, a goodwill impairment charge for this difference is recorded to current period earnings as non-interest expense.

The Company’s intangible assets consist primarily of core deposit intangible assets that are amortized over periods ranging from five to 10 years. The Company considers the remaining useful lives of its core deposit intangible assets each reporting period, as required by ASC 350, Intangibles—Goodwill and Other, to determine whether events and circumstances warrant a revision to the remaining period of amortization. If the estimate of an intangible asset’s remaining useful life has changed, the remaining carrying amount of the intangible asset is amortized prospectively over the revised remaining useful life. The Company did not revise its estimates of the useful lives of its core deposit intangibles during the three and nine months ended September 30, 2020 or 2019.

Stockholders' Equity, Policy

Treasury shares

The Company separately presents treasury shares, which represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. Treasury shares are carried at cost.

Common stock repurchases

On December 11, 2018, the Company adopted its common stock repurchase program, pursuant to which the Company was authorized to repurchase up to $250.0 million of its shares of common stock through December 31, 2019. The program was renewed through December 2020, authorizing the Company to repurchase up to an additional $250.0 million of its outstanding common stock. All shares repurchased under the plan are retired upon settlement. The Company has elected to allocate the excess of the repurchase price over the par value of its common stock between APIC and retained earnings, with the portion allocated to APIC limited to the amount of APIC that was recorded at the time that the shares were initially issued, which is calculated on a last-in, first-out basis.

Derivative Financial Instruments

Derivative financial instruments

The Company uses interest rate swaps to mitigate interest-rate risk associated with changes to the fair value of certain fixed-rate financial instruments (fair value hedges).

The Company recognizes derivatives as assets or liabilities on the Consolidated Balance Sheet at their fair value in accordance with ASC 815, Derivatives and Hedging. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset or liability attributable to a particular risk, such as interest rate risk, are considered fair value hedges.

Changes in the fair value of a derivative that is designated and qualifies as a fair value hedge, along with changes in the fair value of the hedged asset or liability that are attributable to the hedged risk, are recorded in current period earnings. Changes in the fair value of derivatives not considered to be highly effective in hedging the change in fair value of the hedged item are recognized in earnings as non-interest income during the period of the change.

The Company documents its hedge relationships, including identification of the hedging instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transaction after the derivative contract is executed. At inception, the Company performs a quantitative assessment to determine whether the derivatives used in hedging transactions are highly effective (as defined in the guidance) in offsetting changes in the fair value of the hedged item. Retroactive effectiveness is assessed, as well as the continued expectation that the hedge will remain effective prospectively.

After the initial quantitative assessment is performed, on a quarterly basis, the Company performs a qualitative hedge effectiveness assessment. This assessment takes into consideration any adverse developments related to the counterparty's risk of default and any negative events or circumstances that affect the factors that originally enabled the Company to assess that it could reasonably support, qualitatively, an expectation that the hedging relationship was and will continue to be highly effective. The Company discontinues hedge accounting prospectively when it is determined that a hedge is no longer highly effective. When hedge accounting is discontinued on a fair value hedge that no longer qualifies as an effective hedge, the derivative instrument continues to be reported at fair value on the Consolidated Balance Sheet, but the carrying amount of the hedged item is no longer adjusted for future changes in fair value. The adjustment to the carrying amount of the hedged item that existed at the date hedge accounting is discontinued is amortized over the remaining life of the hedged item into earnings.

Derivative instruments that are not designated as hedges, so called free-standing derivatives, are reported on the Consolidated Balance Sheet at fair value and the changes in fair value are recognized in earnings as non-interest income during the period of change.

The Company may in the normal course of business purchase a financial instrument or originate a loan that contains an embedded derivative instrument. Upon purchasing the instrument or originating the loan, the Company assesses whether the economic characteristics of the embedded derivative are clearly and closely related to the economic characteristics of the remaining component of the financial instrument (i.e., the host contract) and whether a separate instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When it is determined that the embedded derivative possesses economic characteristics that are not clearly and closely related to the economic characteristics of the host contract and a separate instrument with the same terms would qualify as a derivative instrument, the embedded derivative is separated from the host contract and carried at fair value. However, in cases where the host contract is measured at fair value, with changes in fair value reported in current earnings, or the Company is unable to reliably identify and measure an embedded derivative for separation from its host contract, the entire contract is carried on the Consolidated Balance Sheet at fair value and is not designated as a hedging instrument.

Off-Balance Sheet Instruments

Off-balance sheet instruments

In the ordinary course of business, the Company has entered into off-balance sheet financial instrument arrangements consisting of commitments to extend credit and standby letters of credit. Such financial instruments are recorded in the Consolidated Financial Statements when they are funded. They involve, to varying degrees, elements of credit risk in excess of amounts recognized on the Consolidated Balance Sheet. Losses could be experienced when the Company is contractually obligated to make a payment under these instruments and must seek repayment from the borrower, which may not be as financially sound in the current period as they were when the commitment was originally made. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract and, in certain instances, may be unconditionally cancelable. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral.

The Company also has off-balance sheet arrangements related to its derivative instruments. Derivative instruments are recognized in the Consolidated Financial Statements at fair value and their notional values are carried off-balance sheet. See "Note 8. Derivatives and Hedging Activities" of these Notes to Unaudited Consolidated Financial Statements for further discussion.

Fair Values of Financial Instruments

Fair values of financial instruments

The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities. ASC 820, Fair Value Measurement, establishes a framework for measuring fair value and a three-level valuation hierarchy for disclosure of fair value measurement, and also sets forth disclosure requirements for fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The Company uses various valuation approaches, including market, income, and/or cost approaches. ASC 820 establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors market participants would consider in pricing the

asset or liability developed based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the reliability of inputs, as follows:

•Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

•Level 2 - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, prepayment speeds, volatilities, etc.) or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market.

•Level 3 - Valuation is generated from model-based techniques where one or more significant inputs are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of matrix pricing, discounted cash flow models, and similar techniques.

The availability of observable inputs varies based on the nature of the specific financial instrument. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

Fair value is a market-based measure considered from the perspective of a market participant who may purchase the asset or assume the liability, rather than an entity-specific measure. When market assumptions are available, ASC 820 requires that the Company make assumptions regarding the assumptions that market participants would use to estimate the fair value of the financial instrument at the measurement date.

ASC 825, Financial Instruments, requires disclosure of fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value.

Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent limitations in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates presented herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction at September 30, 2020 and December 31, 2019. The estimated fair value amounts for September 30, 2020 and December 31, 2019 have been measured as of period-end, and have not been re-evaluated or updated for purposes of these Unaudited Consolidated Financial Statements subsequent to those dates. As such, the estimated fair values of these financial instruments subsequent to the reporting date may be different than the amounts reported at period-end.

The information in "Note 12. Fair Value Accounting" of these Notes to Unaudited Consolidated Financial Statements should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only required for a limited portion of the Company’s assets and liabilities.

Due to the wide range of valuation techniques and the degree of subjectivity used in making the estimate, comparisons between the Company’s disclosures and those of other companies or banks may not be meaningful.

The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments:

Cash, cash equivalents, and restricted cash

The carrying amounts reported on the Consolidated Balance Sheet for cash and due from banks approximate their fair value.

Money market investments

The carrying amounts reported on the Consolidated Balance Sheet for money market investments approximate their fair value.

Investment securities

The fair values of CRA investments, exchange-listed preferred stock, trust preferred securities, and certain corporate debt securities are based on quoted market prices and are categorized as Level 1 in the fair value hierarchy.

The fair values of debt securities are primarily determined based on matrix pricing. Matrix pricing is a mathematical technique that utilizes observable market inputs including, for example, yield curves, credit ratings, and prepayment speeds. Fair values determined using matrix pricing are generally categorized as Level 2 in the fair value hierarchy. For a small subset of securities, other pricing sources are used, including observed prices on publicly traded securities and dealer quotes.

Restricted stock

WAB is a member of the Federal Reserve System and the FHLB and, accordingly, maintains investments in the capital stock of the FRB and the FHLB. These investments are carried at cost since no ready market exists for them, and they have no quoted market value. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. The fair values of these investments have been categorized as Level 2 in the fair value hierarchy.

Loans

The fair value of loans is estimated based on discounted cash flows using interest rates currently being offered for loans with similar terms to borrowers with similar credit quality and adjustments that the Company believes a market participant would consider in determining fair value based on a third-party independent valuation. As a result, the fair value for loans is categorized as Level 2 in the fair value hierarchy, excluding collateral dependent and impaired loans, which are categorized as Level 3.

Accrued interest receivable and payable

The carrying amounts reported on the Consolidated Balance Sheet for accrued interest receivable and payable approximate their fair values.

Derivative financial instruments

All derivatives are recognized on the Consolidated Balance Sheets at their fair value. The fair value for derivatives is determined based on market prices, broker-dealer quotations on similar products, or other related input parameters. As a result, the fair values have been categorized as Level 2 in the fair value hierarchy.

Deposits

The fair value disclosed for demand and savings deposits is by definition equal to the amount payable on demand at their reporting date (that is, their carrying amount) as these deposits do not have a contractual term. The carrying amount for variable rate deposit accounts approximates their fair value. Fair values for fixed rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on these deposits. The fair value measurement of the deposit liabilities is categorized as Level 2 in the fair value hierarchy.

FHLB advances and customer repurchase agreements

The fair values of the Company’s borrowings are estimated using discounted cash flow analyses, based on the market rates for similar types of borrowing arrangements. The FHLB advances and customer repurchase agreements have been categorized as Level 2 in the fair value hierarchy due to their short durations.

Subordinated debt

The fair value of subordinated debt is based on the market rate for the respective subordinated debt security. Subordinated debt has been categorized as Level 2 in the fair value hierarchy.

Junior subordinated debt

Junior subordinated debt is valued based on a discounted cash flow model which uses as inputs Treasury Bond rates and the 'BB' and 'BBB' rated financial indexes. Junior subordinated debt has been categorized as Level 3 in the fair value hierarchy.

Off-balance sheet instruments

The fair value of the Company’s off-balance sheet instruments (lending commitments and letters of credit) is based on quoted fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements, and the counterparties’ credit standing.

Income Taxes

Income taxes

The Company is subject to income taxes in the United States and files a consolidated federal income tax return with all of its subsidiaries, with the exception of BW Real Estate, Inc. Deferred income taxes are recorded to reflect the effects of temporary differences between the financial reporting carrying amounts of assets and liabilities and their income tax bases using enacted tax rates that are expected to be in effect when the taxes are actually paid or recovered. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.

Net deferred tax assets are recorded to the extent that these assets will more-likely-than-not be realized. In making these determinations, all available positive and negative evidence is considered, including scheduled reversals of deferred tax liabilities, tax planning strategies, projected future taxable income, and recent operating results. If it is determined that deferred income tax assets to be realized in the future are in excess of their net recorded amount, an adjustment to the valuation allowance will be recorded, which will reduce the Company's provision for income taxes.

A tax benefit from an unrecognized tax benefit may be recognized when it is more-likely-than-not that the position will be sustained upon examination, including related appeals or litigation, based on technical merits. Income tax benefits must meet a more-likely-than-not recognition threshold at the effective date to be recognized.

Interest and penalties related to unrecognized tax benefits are recognized as part of the provision for income taxes in the Consolidated Income Statement. Accrued interest and penalties are included in the related tax liability line with other liabilities on the Consolidated Balance Sheet.

Revenue from Contract with Customer [Policy Text Block]

Non-interest incomeNon-interest income includes service charges and fees, income from equity investments, card income, foreign currency income, income from bank owned life insurance, lending related income, net gain or loss on sales of investment securities, net fair value gain or loss adjustments on assets measured at fair value, and other income. Service charges and fees consist of fees earned from performance of account analysis, general account services, and other deposit account services. These fees are recognized as the related services are provided in accordance with ASC 606, Revenue from Contracts with Customers. Income from equity investments includes gains on equity warrant assets, SBIC equity income, and success fees. Card income includes fees earned from customer use of debit and credit cards, interchange income from merchants, and international charges. Card income is generally within the scope of ASC 310, Receivables; however, certain processing transactions for merchants, such as interchange fees, are within the scope of ASC 606. Foreign currency income represents fees earned on the differential between purchases and sales of foreign currency on behalf of the Company’s clients. Income from bank owned life insurance is accounted for in accordance with ASC 325, Investments - Other. Lending related income includes fees earned from gains or losses on the sale of loans, SBA income, and letter of credit fees. Gains and losses on the sale of loans and SBA income are recognized pursuant to ASC 860, Transfers and Servicing. Net unrealized gains or losses on assets measured at fair value represent fair value changes in equity securities and are accounted for in accordance with ASC 321, Investments - Equity Securities. Fees related to standby letters of credit are accounted for in accordance with ASC 440, Commitments. Other income includes operating lease income, which is recognized on a straight-line basis over the lease term in accordance with ASC 842, Leases. Net gain or loss on sales/valuations of repossessed and other assets is presented as a component of non-interest expense, but may also be presented as a component of non-interest income in the event that a net gain is recognized. Net gain or loss on sales of repossessed and other assets are accounted for in accordance with ASC 610, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets.

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Investment Securities (Tables)

9 Months Ended

Sep. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Debt Securities, Held-to-maturity, Allowance for Credit Loss [Table Text Block]

	Three Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	June 30, 2020								September 30, 2020
	(in thousands)
Held-to-maturity debt securities
Tax-exempt	$	7,649	$	(1,685)	$	—	$	—	$	5,964

	Nine Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	January 1, 2020								September 30, 2020
	(in thousands)
Held-to-maturity debt securities
Tax-exempt	$	2,646	$	3,318	$	—	$	—	$	5,964

Carrying Amounts and Fair Values of Investment Securities

The carrying amounts and fair values of investment securities at September 30, 2020 and December 31, 2019 are summarized as follows:

	September 30, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	504,477	$	43,663	$	—	$	548,140
Available-for-sale debt securities
CDO	$	50	$	8,126	$	—	$	8,176
Commercial MBS issued by GSEs	91,769		3,888		—		95,657
Corporate debt securities	193,798		1,081		(8,270)		186,609
Municipal securities	22,006		271		(118)		22,159
Private label residential MBS	1,245,217		19,874		(854)		1,264,237
Residential MBS issued by GSEs	1,329,773		32,314		(531)		1,361,556
Tax-exempt	961,373		51,117		(1,467)		1,011,023
Trust preferred securities	32,000		—		(6,792)		25,208
U.S. treasury securities	600		—		—		600
Total AFS debt securities	$	3,876,586	$	116,671	$	(18,032)	$	3,975,225
Equity securities
CRA investments	$	53,190	$	355	$	—	$	53,545
Preferred stock	104,974		3,976		(1,934)		107,016
Total equity securities	$	158,164	$	4,331	$	(1,934)	$	160,561

	December 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	485,107	$	31,303	$	(149)	$	516,261
Available-for-sale debt securities
CDO	$	50	$	10,092	$	—	$	10,142
Commercial MBS issued by GSEs	95,062		366		(1,175)		94,253
Corporate debt securities	105,015		112		(5,166)		99,961
Municipal securities	7,494		279		—		7,773
Private label residential MBS	1,129,985		3,572		(4,330)		1,129,227
Residential MBS issued by GSEs	1,406,594		9,283		(3,817)		1,412,060
Tax-exempt	530,729		24,548		(422)		554,855
Trust preferred securities	32,000		—		(4,960)		27,040
U.S. government sponsored agency securities	10,000		—		—		10,000
U.S. treasury securities	999		—		—		999
Total AFS debt securities	$	3,317,928	$	48,252	$	(19,870)	$	3,346,310
Equity securities
CRA investments	$	52,805	$	—	$	(301)	$	52,504
Preferred stock	82,514		3,881		(198)		86,197
Total equity securities	$	135,319	$	3,881	$	(499)	$	138,701

Securities with carrying amounts of approximately $830.4 million and $962.5 million at September 30, 2020 and December 31, 2019, respectively, were pledged for various purposes as required or permitted by law.

Unrealized Losses and Fair Value of Investment Securities in Continuous Unrealized Loss Position

unrealized loss position at September 30, 2020 and December 31, 2019, aggregated by major security type and length of time in a continuous unrealized loss position: 

	September 30, 2020
	Less Than Twelve Months				More Than Twelve Months				Total
	Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value
	(in thousands)
Available-for-sale debt securities
Corporate debt securities	$	70	$	31,528	$	8,200	$	91,800	$	8,270	$	123,328
Municipal securities	118		9,384		—		—		118		9,384
Private label residential MBS	851		131,620		3		2,435		854		134,055
Residential MBS issued by GSEs	522		134,180		9		1,193		531		135,373
Tax-exempt	1,467		121,031		—		—		1,467		121,031
Trust preferred securities	—		—		6,792		25,208		6,792		25,208
Total AFS securities	$	3,028	$	427,743	$	15,004	$	120,636	$	18,032	$	548,379

	December 31, 2019
	Less Than Twelve Months				More Than Twelve Months				Total
	Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value
	(in thousands)
Held-to-maturity
Tax-exempt	$	149	$	24,325	$	—	$	—	$	149	$	24,325
Available-for-sale debt securities
Commercial MBS issued by GSEs	$	85	$	9,035	$	1,090	$	54,604	$	1,175	$	63,639
Corporate debt securities	—		—		5,166		94,834		5,166		94,834
Private label residential MBS	1,776		337,285		2,554		258,791		4,330		596,076
Residential MBS issued by GSEs	1,740		385,643		2,077		150,419		3,817		536,062
Tax-exempt	422		67,150		—		—		422		67,150
Trust preferred securities	—		—		4,960		27,040		4,960		27,040
Total AFS securities	$	4,023	$	799,113	$	15,847	$	585,688	$	19,870	$	1,384,801

Amortized Cost and Fair Value of Investment Securities by Contractual Maturities

A security is considered to be past due once it is 30 days contractually past due under the terms of the agreement. As of September 30, 2020, there were no investment securities that were past due. In addition, the Company does not have a significant amount of investment securities on nonaccrual status or securities that are considered to be collateral-dependent as of September 30, 2020.

The amortized cost and fair value of the Company's debt securities as of September 30, 2020, by contractual maturities, are shown below. MBS are shown separately as individual MBS are comprised of pools of loans with varying maturities. Therefore, these securities are listed separately in the maturity summary.

	September 30, 2020
	Amortized Cost		Estimated Fair Value
	(in thousands)
Held-to-maturity
Due in one year or less	$	7,330	$	7,336
After one year through five years	17,135		17,628
After ten years	480,012		523,176
Total HTM securities	$	504,477	$	548,140
Available-for-sale
Due in one year or less	$	600	$	600
After one year through five years	9,024		9,047
After five years through ten years	229,899		223,844
After ten years	970,304		1,020,284
Mortgage-backed securities	2,666,759		2,721,450
Total AFS securities	$	3,876,586	$	3,975,225

Investment Securities by Credit Rating Type

The following tables summarize the carrying amount of the Company’s investment ratings position as of September 30, 2020 and December 31, 2019, which are updated quarterly and used to monitor the credit quality of the Company's securities: 

	September 30, 2020
	AAA		Split-rated AAA/AA+		AA+ to AA-		A+ to A-		BBB+ to BBB-		BB+ and below		Unrated		Totals
	(in thousands)
Held-to-maturity
Tax-exempt	$	—	$	—	$	—	$	—	$	—	$	—	$	504,477	$	504,477
Available-for-sale debt securities
CDO	$	—	$	—	$	—	$	—	$	—	$	8,176	$	—	$	8,176
Commercial MBS issued by GSEs	—		95,657		—		—		—		—		—		95,657
Corporate debt securities	—		—		—		45,800		122,579		18,230		—		186,609
Municipal securities	—		—		12,143		—		2,630		—		7,386		22,159
Private label residential MBS	1,235,170		—		27,682		91		347		947		—		1,264,237
Residential MBS issued by GSEs	—		1,361,556		—		—		—		—		—		1,361,556
Tax-exempt	43,328		56,725		447,629		431,459		—		—		31,882		1,011,023
Trust preferred securities	—		—		—		—		25,208		—		—		25,208
U.S. treasury securities	—		600		—		—		—		—		—		600
Total AFS securities (1)	$	1,278,498	$	1,514,538	$	487,454	$	477,350	$	150,764	$	27,353	$	39,268	$	3,975,225
Equity securities
CRA investments	$	—	$	27,795	$	—	$	—	$	—	$	—	$	25,750	$	53,545
Preferred stock	—		—		—		—		68,945		37,135		936		107,016
Total equity securities (1)	$	—	$	27,795	$	—	$	—	$	68,945	$	37,135	$	26,686	$	160,561

(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

	December 31, 2019
	AAA		Split-rated AAA/AA+		AA+ to AA-		A+ to A-		BBB+ to BBB-		BB+ and below		Unrated		Totals
	(in thousands)
Held-to-maturity
Tax-exempt	$	—	$	—	$	—	$	—	$	—	$	—	$	485,107	$	485,107
Available-for-sale debt securities
CDO	$	—	$	—	$	—	$	—	$	—	$	10,142	$	—	$	10,142
Commercial MBS issued by GSEs	—		94,253		—		—		—		—		—		94,253
Corporate debt securities	—		—		—		66,530		33,431		—		—		99,961
Municipal securities	—		—		—		—		—		—		7,773		7,773
Private label residential MBS	1,096,909		—		30,675		181		288		1,174		—		1,129,227
Residential MBS issued by GSEs	—		1,412,060		—		—		—		—		—		1,412,060
Tax-exempt	52,610		2,856		327,657		171,732		—		—		—		554,855
Trust preferred securities	—		—		—		—		27,040		—		—		27,040
U.S. government sponsored agency securities	—		10,000		—		—		—		—		—		10,000
U.S. treasury securities	—		999		—		—		—		—		—		999
Total AFS securities (1)	$	1,149,519	$	1,520,168	$	358,332	$	238,443	$	60,759	$	11,316	$	7,773	$	3,346,310
Equity securities
CRA investments	$	—	$	25,375	$	—	$	—	$	—	$	—	$	27,129	$	52,504
Preferred stock	—		—		—		—		82,851		2,105		1,241		86,197
Total equity securities (1)	$	—	$	25,375	$	—	$	—	$	82,851	$	2,105	$	28,370	$	138,701

(1)Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

Gross Gains and (Losses) on Sales of Investment Securities

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Available-for-sale securities
Gross gains	$	—	$	3,152	$	405	$	3,152
Gross losses	—		—		(175)		—
Net gains (losses) on AFS securities	$	—	$	3,152	$	230	$	3,152

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Loans, Leases and Allowance for Credit Losses (Tables)

9 Months Ended

Sep. 30, 2020

Receivables [Abstract]

Financing Receivable, Troubled Debt Restructuring [Table Text Block]

The following table presents TDR loans for the periods presented:

	September 30, 2020
	Number of Loans	Recorded Investment
	(dollars in thousands)
Commercial and industrial
Tech & Innovation	3	$	12,111
Other commercial and industrial	16	30,270
CRE - owner occupied	3	2,335
CRE - non-owner occupied
Hotel Franchise Finance	2	5,746
Other CRE - non-owned occupied	3	10,295
Total	27	$	60,757

Schedule of Held for Investment Loan Portfolio Composition of Loans, Leases and Allowance for Credit Losses

The Company's primary portfolio segments have changed to align with the methodology applied in estimating the allowance for credit losses under CECL. In addition, as the concept of impaired loans does not exist under CECL, disclosures that related solely to impaired loans have been removed.

The composition of the Company's held for investment loan portfolio is as follows:

	September 30, 2020
	(in thousands)
Commercial and industrial
Tech & Innovation	$	2,277,889
Other commercial and industrial	5,993,712
CRE - owner occupied	1,970,163
CRE - non-owner occupied
Hotel Franchise Finance	1,942,886
Other CRE - non-owned occupied	3,433,932
Residential	2,330,064
Construction and land development	2,267,922
Warehouse lending	3,926,852
Municipal & nonprofit	1,686,690
Other	163,144
Total loans HFI	25,993,254
Allowance for credit losses	(310,560)
Total loans HFI, net of allowance	$	25,682,694

	December 31, 2019
	(in thousands)
Commercial and industrial	$	9,382,043
Commercial real estate - non-owner occupied	5,245,634
Commercial real estate - owner occupied	2,316,913
Construction and land development	1,952,156
Residential real estate	2,147,664
Consumer	57,083
Loans, net of deferred loan fees and costs	21,101,493
Allowance for credit losses	(167,797)
Total loans HFI	$	20,933,696

Contractual Aging of Loan Portfolio by Class of Loans Including Loans Held for Sale and Excluding Deferred Fees/Costs

The following table presents an aging analysis of past due loans by loan portfolio segment:

	September 30, 2020
	Current		30-59 Days Past Due		60-89 Days Past Due		Over 90 days Past Due		Total Past Due		Total
	(in thousands)
Commercial and industrial
Tech & Innovation	$	2,277,889	$	—	$	—	$	—	$	—	$	2,277,889
Other commercial and industrial	5,969,739		4,617		2,490		16,866		23,973		5,993,712
CRE - owner occupied	1,970,163		—		—		—		—		1,970,163
CRE - non-owner occupied
Hotel Franchise Finance	1,931,623		—		—		11,263		11,263		1,942,886
Other CRE - non-owned occupied	3,433,932		—		—		—		—		3,433,932
Residential	2,319,530		10,325		209		—		10,534		2,330,064
Construction and land development	2,261,348		6,574		—		—		6,574		2,267,922
Warehouse lending	3,926,852		—		—		—		—		3,926,852
Municipal & nonprofit	1,686,690		—		—		—		—		1,686,690
Other	163,101		38		5		—		43		163,144
Total loans	$	25,940,867	$	21,554	$	2,704	$	28,129	$	52,387	$	25,993,254

	December 31, 2019
	Current		30-59 Days Past Due		60-89 Days Past Due		Over 90 days Past Due		Total Past Due		Total
	(in thousands)
Commercial and industrial	$	9,376,377	$	2,501	$	637	$	2,528	$	5,666	$	9,382,043
Commercial real estate
Owner occupied	2,316,165		624		—		124		748		2,316,913
Non-owner occupied	5,007,644		4,661		—		11,913		16,574		5,024,218
Multi-family	221,416		—		—		—		—		221,416
Construction and land development
Construction	1,176,908		—		—		—		—		1,176,908
Land	775,248		—		—		—		—		775,248
Residential real estate	2,134,346		7,627		1,721		3,970		13,318		2,147,664
Consumer	57,083		—		—		—		—		57,083
Total loans	$	21,065,187	$	15,413	$	2,358	$	18,535	$	36,306	$	21,101,493

Summary of Recorded Investment in Nonaccrual Loans and Loans Past Due 90 Days Still Accruing Interest by Loan Class

Loans are placed on nonaccrual status when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely, generally when the loan becomes 90 days or more past due.

The following tables present nonperforming loan balances by loan portfolio segment:

	September 30, 2020
	Nonaccrual with No Allowance for Credit Loss		Nonaccrual with an Allowance for Credit Loss		Total Nonaccrual		Loans Past Due 90 Days or More and Still Accruing
	(in thousands)
Commercial and industrial
Tech & Innovation	$	18,725	$	—	$	18,725	$	—
Other commercial and industrial	26,997		4,614		31,611		16,866
CRE - owner occupied	38,567		—		38,567		—
CRE - non-owner occupied
Hotel Franchise Finance	—		—		—		11,263
Other CRE - non-owned occupied	18,404		10,667		29,071		—
Residential	5,388		—		5,388		—
Construction and land development	—		192		192		—
Warehouse lending	—		—		—		—
Municipal & nonprofit	—		1,952		1,952		—
Other	158		45		203		—
Total	$	108,239	$	17,470	$	125,709	$	28,129

In addition, the Company also has HFS loans totaling $20.8 million that are on nonaccrual status as of September 30, 2020.

	December 31, 2019
	Non-accrual loans						Loans past due 90 days or more and still accruing
	Current		Past Due/ Delinquent		Total Non-accrual
	(in thousands)
Commercial and industrial	$	19,080	$	5,421	$	24,501	$	—
Commercial real estate
Owner occupied	4,418		124		4,542		—
Non-owner occupied	7,265		11,913		19,178		—
Multi-family	—		—		—		—
Construction and land development
Construction	2,147		—		2,147		—
Land	—		—		—		—
Residential real estate	1,231		4,369		5,600		—
Consumer	—		—		—		—
Total	$	34,141	$	21,827	$	55,968	$	—

Loans by Risk Rating

Credit Quality Indicators

The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually to classify the loans as to credit risk. This analysis is performed on a quarterly basis. The risk rating categories are described in "Note 1. Summary of Significant Accounting Policies." The following tables present risk ratings as of September 30, 2020 by loan portfolio segment:

	Term Loan Amortized Cost Basis by Origination Year												Revolving Loans Amortized Cost Basis		Total
September 30, 2020	2020		2019		2018		2017		2016		Prior
	(in thousands)
Tech & Innovation
Pass	$	524,508	$	315,900	$	132,566	$	1,459	$	1,898	$	—	$	1,236,377	$	2,212,708
Special mention	3,499		8,957		2,651		—		—		—		—		15,107
Substandard	32,412		2,006		—		—		—		—		15,656		50,074
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	560,419	$	326,863	$	135,217	$	1,459	$	1,898	$	—	$	1,252,033	$	2,277,889
Other commercial and industrial
Pass	$	2,067,599	$	920,820	$	469,602	$	289,894	$	113,199	$	123,061	$	1,735,701	$	5,719,876
Special mention	129		51,516		32,172		36,017		6,130		15,885		43,378		185,227
Substandard	18,169		8,420		3,465		31,349		9,876		1,001		16,102		88,382
Doubtful	—		—		—		177		—		—		—		177
Loss	—		50		—		—		—		—		—		50
Total	$	2,085,897	$	980,806	$	505,239	$	357,437	$	129,205	$	139,947	$	1,795,181	$	5,993,712
CRE - owner occupied
Pass	$	173,784	$	327,618	$	322,396	$	423,987	$	167,304	$	376,175	$	74,887	$	1,866,151
Special mention	877		11,412		4,411		17,306		3,309		10,658		—		47,973
Substandard	2,237		7,573		4,926		10,483		6,311		22,460		2,049		56,039
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	176,898	$	346,603	$	331,733	$	451,776	$	176,924	$	409,293	$	76,936	$	1,970,163
Hotel Franchise Finance
Pass	$	156,816	$	754,537	$	464,842	$	140,424	$	—	$	96,306	$	162,567	$	1,775,492
Special mention	—		32,643		55,798		27,389		—		23,914		—		139,744
Substandard	—		—		—		12,774		2,129		12,747		—		27,650
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	156,816	$	787,180	$	520,640	$	180,587	$	2,129	$	132,967	$	162,567	$	1,942,886
Other CRE - non-owned occupied
Pass	$	648,330	$	961,315	$	663,375	$	431,032	$	182,475	$	232,800	$	211,671	$	3,330,998
Special mention	—		13,217		7,031		5,458		4,257		7,288		—		37,251
Substandard	8,350		26,454		—		12,432		6,652		11,795		—		65,683
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	656,680	$	1,000,986	$	670,406	$	448,922	$	193,384	$	251,883	$	211,671	$	3,433,932

	Term Loan Amortized Cost Basis by Origination Year												Revolving Loans Amortized Cost Basis		Total
September 30, 2020	2020		2019		2018		2017		2016		Prior
	(in thousands)
Residential
Pass	$	524,852	$	1,018,264	$	472,941	$	121,970	$	91,138	$	50,087	$	45,392	$	2,324,644
Special mention	—		—		—		—		—		—		—		—
Substandard	—		2,169		1,327		1,134		15		517		258		5,420
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	524,852	$	1,020,433	$	474,268	$	123,104	$	91,153	$	50,604	$	45,650	$	2,330,064
Construction and land development
Pass	$	492,218	$	777,114	$	422,749	$	21,028	$	1,403	$	14,953	$	496,079	$	2,225,544
Special mention	1,463		—		36,476		—		—		—		4,247		42,186
Substandard	—		—		192		—		—		—		—		192
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	493,681	$	777,114	$	459,417	$	21,028	$	1,403	$	14,953	$	500,326	$	2,267,922
Warehouse lending
Pass	$	155,588	$	48,455	$	990	$	1,640	$	78	$	—	$	3,720,101	$	3,926,852
Special mention	—		—		—		—		—		—		—		—
Substandard	—		—		—		—		—		—		—		—
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	155,588	$	48,455	$	990	$	1,640	$	78	$	—	$	3,720,101	$	3,926,852
Municipal & nonprofit
Pass	$	137,047	$	170,963	$	76,133	$	232,816	$	129,957	$	927,762	$	3,535	$	1,678,213
Special mention	—		4,194		2,331		—		—		—		—		6,525
Substandard	—		—		—		1,952		—		—		—		1,952
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	137,047	$	175,157	$	78,464	$	234,768	$	129,957	$	927,762	$	3,535	$	1,686,690
Other
Pass	$	17,738	$	16,175	$	14,671	$	6,909	$	2,177	$	71,880	$	30,133	$	159,683
Special mention	961		—		97		1,691		—		42		35		2,826
Substandard	—		135		189		—		97		196		18		635
Doubtful	—		—		—		—		—		—		—		—
Loss	—		—		—		—		—		—		—		—
Total	$	18,699	$	16,310	$	14,957	$	8,600	$	2,274	$	72,118	$	30,186	$	163,144
Total by Risk Category
Pass	$	4,898,480	$	5,311,161	$	3,040,265	$	1,671,159	$	689,629	$	1,893,024	$	7,716,443	$	25,220,161
Special mention	6,929		121,939		140,967		87,861		13,696		57,787		47,660		476,839
Substandard	61,168		46,757		10,099		70,124		25,080		48,716		34,083		296,027
Doubtful	—		—		—		177		—		—		—		177
Loss	—		50		—		—		—		—		—		50
Total	$	4,966,577	$	5,479,907	$	3,191,331	$	1,829,321	$	728,405	$	1,999,527	$	7,798,186	$	25,993,254

	December 31, 2019
	Pass		Special Mention		Substandard		Doubtful		Loss		Total
	(in thousands)
Commercial and industrial	$	9,265,823	$	65,893	$	49,878	$	449	$	—	$	9,382,043
Commercial real estate
Owner occupied	2,265,566		9,579		41,768		—		—		2,316,913
Non-owner occupied	4,913,007		64,161		47,050		—		—		5,024,218
Multi-family	221,416		—		—		—		—		221,416
Construction and land development
Construction	1,157,169		17,592		2,147		—		—		1,176,908
Land	773,868		1,380		—		—		—		775,248
Residential real estate	2,141,336		366		5,962		—		—		2,147,664
Consumer	57,073		10		—		—		—		57,083
Total	$	20,795,258	$	158,981	$	146,805	$	449	$	—	$	21,101,493

	December 31, 2019
	Pass		Special Mention		Substandard		Doubtful		Loss		Total
	(in thousands)
Current (up to 29 days past due)	$	20,785,118	$	158,907	$	120,897	$	265	$	—	$	21,065,187
Past due 30 - 59 days	8,263		58		7,092		—		—		15,413
Past due 60 - 89 days	1,481		16		861		—		—		2,358
Past due 90 days or more	396		—		17,955		184		—		18,535
Total	$	20,795,258	$	158,981	$	146,805	$	449	$	—	$	21,101,493

Allowances for Credit Losses

The below tables reflect the activity in the allowance for credit losses for loans held for investment by loan portfolio segment:

	Three Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	June 30, 2020								September 30, 2020
	(1)								(1)
	(in thousands)
Commercial and industrial
Tech & Innovation	$	54,559	$	(9,359)	$	6,364	$	—	$	38,836
Other commercial and industrial	109,930		(621)		748		(192)		108,753
CRE - owner occupied	15,587		3,897		83		(5)		19,406
CRE - non-owner occupied
Hotel Franchise Finance	35,864		2,163		—		—		38,027
Other CRE - non-owned occupied	32,672		9,196		1,246		—		40,622
Residential	1,725		16		307		(355)		1,789
Construction and land development	35,792		2,983		—		(6)		38,781
Warehouse lending	743		95		—		—		838
Municipal & nonprofit	17,128		768		—		—		17,896
Other	6,550		(934)		25		(21)		5,612
Total	$	310,550	$	8,204	$	8,773	$	(579)	$	310,560

(1)Includes an estimate of future recoveries.

	Nine Months Ended September 30, 2020
	Balance,		Provision for (Reversal of) Credit Losses		Writeoffs		Recoveries		Balance,
	January 1, 2020								September 30, 2020
	(1)								(1)
	(in thousands)
Commercial and industrial
Tech & Innovation	$	22,394	$	25,556	$	9,114	$	—	$	38,836
Other commercial and industrial	95,784		13,653		2,684		(2,000)		108,753
CRE - owner occupied	10,420		9,100		126		(12)		19,406
CRE - non-owner occupied
Hotel Franchise Finance	14,104		23,923		—		—		38,027
Other CRE - non-owned occupied	10,503		30,684		2,131		(1,566)		40,622
Residential	3,814		(2,103)		307		(385)		1,789
Construction and land development	6,218		32,540		—		(23)		38,781
Warehouse lending	246		592		—		—		838
Municipal & nonprofit	17,397		499		—		—		17,896
Other	6,045		(314)		231		(112)		5,612
Total	$	186,925	$	134,130	$	14,593	$	(4,098)	$	310,560

(1)Includes an estimate of future recoveries.

Accrued interest receivable on loans totaled $120.1 million at September 30, 2020 and is excluded from the estimate of credit losses.

	Three Months Ended September 30, 2019
	June 30, 2019		Charge-offs		Recoveries		Provision for (Reversal of) Credit Losses		September 30, 2019
	(in thousands)
Construction and land development	$	26,091	$	—	$	(17)	$	1,210	$	27,318
Commercial real estate	41,258		139		(8)		4,817		45,944
Residential real estate	12,606		9		(131)		804		13,532
Commercial and industrial	79,635		1,950		(2,549)		(2,815)		77,419
Consumer	819		1		(6)		(16)		808
Total	$	160,409	$	2,099	$	(2,711)	$	4,000	$	165,021

	Nine Months Ended September 30, 2019
	December 31, 2018		Charge-offs		Recoveries		Provision for (Reversal of) Credit Losses		September 30, 2019
	(in thousands)
Construction and land development	$	22,513	$	141	$	(81)	$	4,865	$	27,318
Commercial real estate	34,829		139		(900)		10,354		45,944
Residential real estate	11,276		594		(251)		2,599		13,532
Commercial and industrial	83,118		6,092		(3,521)		(3,128)		77,419
Consumer	981		2		(19)		(190)		808
Total	$	152,717	$	6,968	$	(4,772)	$	14,500	$	165,021

The following tables disaggregate the Company's allowance for credit losses and loan balance by measurement methodology:

	September 30, 2020
	Loans						Allowance
	Collectively Evaluated for Credit Loss		Individually Evaluated for Credit Loss		Total		Collectively Evaluated for Credit Loss		Individually Evaluated for Credit Loss		Total
	(in thousands)
Commercial and industrial
Tech & Innovation	$	2,227,995	$	49,894	$	2,277,889	$	38,836	$	—	$	38,836
Other commercial and industrial	5,906,731		86,981		5,993,712		102,011		6,742		108,753
CRE - owner occupied	1,912,127		58,036		1,970,163		19,406		—		19,406
CRE - non-owner occupied
Hotel Franchise Finance	1,885,451		57,435		1,942,886		35,312		2,715		38,027
Other CRE - non-owned occupied	3,355,259		78,673		3,433,932		40,518		104		40,622
Residential	2,324,676		5,388		2,330,064		1,789		—		1,789
Construction and land development	2,267,922		—		2,267,922		38,781		—		38,781
Warehouse lending	3,926,852		—		3,926,852		838		—		838
Municipal & nonprofit	1,684,738		1,952		1,686,690		17,454		442		17,896
Other	162,518		626		163,144		5,569		43		5,612
Total	$	25,654,269	$	338,985	$	25,993,254	$	300,514	$	10,046	$	310,560

	Commercial Real Estate-Owner Occupied		Commercial Real Estate-Non-Owner Occupied		Commercial and Industrial		Residential Real Estate		Construction and Land Development		Consumer		Total Loans
	(in thousands)
Loans as of December 31, 2019:
Recorded Investment
Impaired loans with an allowance recorded	$	—	$	11,913	$	6,919	$	—	$	2,147	$	—	$	20,979
Impaired loans with no allowance recorded	17,736		23,625		42,065		5,600		6,274		24		95,324
Total loans individually evaluated for impairment	17,736		35,538		48,984		5,600		8,421		24		116,303
Loans collectively evaluated for impairment	2,296,342		5,159,921		9,333,059		2,142,045		1,943,735		57,059		20,932,161
Loans acquired with deteriorated credit quality	2,835		50,175		—		19		—		—		53,029
Total recorded investment	$	2,316,913	$	5,245,634	$	9,382,043	$	2,147,664	$	1,952,156	$	57,083	$	21,101,493
Unpaid Principal Balance
Impaired loans with an allowance recorded	$	—	$	11,949	$	9,844	$	—	$	2,262	$	—	24,055
Impaired loans with no allowance recorded	18,681		24,738		43,848		5,708		6,413		52		99,440
Total loans individually evaluated for impairment	18,681		36,687		53,692		5,708		8,675		52		123,495
Loans collectively evaluated for impairment	2,297,168		5,177,477		9,312,100		2,113,893		1,963,116		57,383		20,921,137
Loans acquired with deteriorated credit quality	3,577		60,191		—		72		—		—		63,840
Total unpaid principal balance	$	2,319,426	$	5,274,355	$	9,365,792	$	2,119,673	$	1,971,791	$	57,435	$	21,108,472
Related Allowance for Credit Losses
Impaired loans with an allowance recorded	$	—	$	1,219	$	1,050	$	—	$	507	$	—	$	2,776
Impaired loans with no allowance recorded	—		—		—		—		—		—		—
Total loans individually evaluated for impairment	—		1,219		1,050		—		507		—		2,776
Loans collectively evaluated for impairment	13,842		32,114		81,252		13,714		23,387		614		164,923
Loans acquired with deteriorated credit quality	—		98		—		—		—		—		98
Total allowance for credit losses	$	13,842	$	33,431	$	82,302	$	13,714	$	23,894	$	614	$	167,797

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Other Borrowings (Tables)

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Company's Borrowings

The following table summarizes the Company’s borrowings as of September 30, 2020 and December 31, 2019: 

	September 30, 2020		December 31, 2019
	(in thousands)
Short-Term:
Federal funds purchased	$	—	$	—
FHLB advances	10,000		—
Total short-term borrowings	$	10,000	$	—

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Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

Summary of Changes in Accumulated Other Comprehensive Income

The following table summarizes the changes in accumulated other comprehensive income by component, net of tax, for the periods indicated: 

	Three Months Ended September 30,
	Unrealized holding gains (losses) on AFS		Unrealized holding gains (losses) on SERP		Unrealized holding gains (losses) on junior subordinated debt		Impairment loss on securities		Total
	(in thousands)
Balance, June 30, 2020	$	66,809	$	(313)	$	7,181	$	—	$	73,677
Other comprehensive income (loss) before reclassifications	7,592		(3)		(2,681)		—		4,908
Amounts reclassified from AOCI	—		—		—		—		—
Net current-period other comprehensive income (loss)	7,592		(3)		(2,681)		—		4,908
Balance, September 30, 2020	$	74,401	$	(316)	$	4,500	$	—	$	78,585
Balance, June 30, 2019	$	19,709	$	357	$	6,171	$	144	$	26,381
Other comprehensive income (loss) before reclassifications	11,014		(18)		598		—		11,594
Amounts reclassified from AOCI	(2,232)		—		—		(144)		(2,376)
Net current-period other comprehensive income (loss)	8,782		(18)		598		(144)		9,218
Balance, September 30, 2019	$	28,491	$	339	$	6,769	$	—	$	35,599
	Nine Months Ended September 30,
	Unrealized holding gains (losses) on AFS		Unrealized holding gains (losses) on SERP		Unrealized holding gains (losses) on junior subordinated debt		Impairment loss on securities		Total
	(in thousands)
Balance, December 31, 2019	$	21,399	$	(20)	$	3,629	$	—	$	25,008
Other comprehensive income (loss) before reclassifications	53,176		(296)		871		—		53,751
Amounts reclassified from AOCI	(174)		—		—		—		(174)
Net current-period other comprehensive income (loss)	53,002		(296)		871		—		53,577
Balance, September 30, 2020	$	74,401	$	(316)	$	4,500	$	—	$	78,585
Balance, December 31, 2018	$	(47,591)	$	392	$	13,433	$	144	$	(33,622)
Other comprehensive income (loss) before reclassifications	78,314		(53)		(6,664)		—		71,597
Amounts reclassified from AOCI	(2,232)		—		—		(144)		(2,376)
Net current-period other comprehensive income (loss)	76,082		(53)		(6,664)		(144)		69,221
Balance, September 30, 2019	$	28,491	$	339	$	6,769	$	—	$	35,599

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Derivatives and Hedging (Tables)

9 Months Ended

Sep. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position

The fair value of derivative contracts, after taking into account the effects of master netting agreements, is included in other assets or other liabilities on the Consolidated Balance Sheets, as indicated in the following table:

	September 30, 2020						December 31, 2019						September 30, 2019
			Fair Value						Fair Value						Fair Value
	Notional Amount		Derivative Assets		Derivative Liabilities		Notional Amount		Derivative Assets		Derivative Liabilities		Notional Amount		Derivative Assets		Derivative Liabilities
	(in thousands)
Derivatives designated as hedging instruments:
Fair value hedges
Interest rate swaps	$	692,348	$	3,417	$	92,352	$	862,952	$	1,778	$	55,471	$	865,321	$	—	$	63,970
Total	692,348		3,417		92,352		862,952		1,778		55,471		865,321		—		63,970
Netting adjustments (1)	—		—		—		—		21		21		—		—		—
Net	$	692,348	$	3,417	$	92,352	$	862,952	$	1,757	$	55,450	$	865,321	$	—	$	63,970
Derivatives not designated as hedging instruments:
Foreign currency contracts	$	38,922	$	460	$	401	$	6,711	$	44	$	18	$	15,329	$	191	$	127
Interest rate swaps	3,517		242		242		2,932		81		81		2,932		124		124
Total	$	42,439	$	702	$	643	$	9,643	$	125	$	99	$	18,261	$	315	$	251

(1)Netting adjustments represent the amounts recorded to convert the Company's derivative balances from a gross basis to a net basis in accordance with the applicable accounting guidance.

Largest Exposure To Individual Counterparty

The following table summarizes the Company's largest exposure to an individual counterparty at the dates indicated:

	September 30, 2020		December 31, 2019		September 30, 2019
	(in thousands)
Largest gross exposure (derivative asset) to an individual counterparty	$	3,417	$	1,757	$	—
Collateral posted by this counterparty	—		1,610		—
Derivative liability with this counterparty	—		—		—
Collateral pledged to this counterparty	—		—		—
Net exposure after netting adjustments and collateral	$	3,417	$	147	$	—

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Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table presents the calculation of basic and diluted EPS: 

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands, except per share amounts)
Weighted average shares - basic	99,850		102,041		100,322		103,024
Dilutive effect of stock awards	209		410		252		444
Weighted average shares - diluted	100,059		102,451		100,574		103,468
Net income	$	135,769	$	127,375	$	313,005	$	371,107
Earnings per share - basic	1.36		1.25		3.12		3.60
Earnings per share - diluted	1.36		1.24		3.11		3.59

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Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Summary of Contractual Amounts for Unfunded Commitments and Letters of Credit

A summary of the contractual amounts for unfunded commitments and letters of credit are as follows: 

	September 30, 2020		December 31, 2019
	(in thousands)
Commitments to extend credit, including unsecured loan commitments of $1,046,504 at September 30, 2020 and $895,175 at December 31, 2019	$	8,379,196	$	8,348,421
Credit card commitments and financial guarantees	283,703		302,909
Letters of credit, including unsecured letters of credit of $9,513 at September 30, 2020 and $5,850 at December 31, 2019	156,170		175,778
Total	$	8,819,069	$	8,827,108

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Fair Value Accounting (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Gains and Losses from Fair Value Changes Included in Consolidated Statement of Operations

For the three and nine months ended September 30, 2020 and 2019, unrealized gains and losses from fair value changes on junior subordinated debt were as follows:

Fair Value of Assets and Liabilities

The fair value of assets and liabilities measured at fair value on a recurring basis was determined using the following inputs as of the periods presented: 

	Fair Value Measurements at the End of the Reporting Period Using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
	(in thousands)
September 30, 2020
Assets:
Available-for-sale debt securities
CDO	$	—	$	8,176	$	—	$	8,176
Commercial MBS issued by GSEs	—		95,657		—		95,657
Corporate debt securities	—		186,609		—		186,609
Municipal securities	—		22,159		—		22,159
Private label residential MBS	—		1,264,237		—		1,264,237
Residential MBS issued by GSEs	—		1,361,556		—		1,361,556
Tax-exempt	—		1,011,023		—		1,011,023
Trust preferred securities	25,208		—		—		25,208
U.S. treasury securities	—		600		—		600
Total AFS debt securities	$	25,208	$	3,950,017	$	—	$	3,975,225
Equity securities
CRA investments	$	27,795	$	25,750	$	—	$	53,545
Preferred stock	107,016		—		—		107,016
Total equity securities	$	134,811	$	25,750	$	—	$	160,561
Loans - HFS	$	—	$	20,764	$	—	$	20,764
Derivative assets (1)	—		4,119		—		4,119
Liabilities:
Junior subordinated debt (2)	$	—	$	—	$	60,529	$	60,529
Derivative liabilities (1)	—		92,995		—		92,995

(1)Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $92,352 and the net carrying value of subordinated debt is increased by $3,417 as of September 30, 2020 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

	Fair Value Measurements at the End of the Reporting Period Using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair Value
	(in thousands)
December 31, 2019
Assets:
Available-for-sale debt securities
CDO	$	—	$	10,142	$	—	$	10,142
Commercial MBS issued by GSEs	—		94,253		—		94,253
Corporate debt securities	5,127		94,834		—		99,961
Municipal securities	—		7,773		—		7,773
Private label residential MBS	—		1,129,227		—		1,129,227
Residential MBS issued by GSEs	—		1,412,060		—		1,412,060
Tax-exempt	—		554,855		—		554,855
Trust preferred securities	27,040		—		—		27,040
U.S. government sponsored agency securities	—		10,000		—		10,000
U.S. treasury securities	—		999		—		999
Total AFS debt securities	$	32,167	$	3,314,143	$	—	$	3,346,310
Equity securities
CRA investments	$	52,504	$	—	$	—	$	52,504
Preferred stock	86,197		—		—		86,197
Total equity securities	$	138,701	$	—	$	—	$	138,701
Loans - HFS	$	—	$	21,803	$	—	$	21,803
Derivative assets (1)	—		1,903		—		1,903
Liabilities:
Junior subordinated debt (2)	$	—	$	—	$	61,685	$	61,685
Derivative liabilities (1)	—		55,570		—		55,570

(1)Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $53,292 and the net carrying value of subordinated debt is decreased by $401 as of December 31, 2019 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

Change in Level 3 Liabilities Measured at Fair Value on Recurring Basis

For the three and nine months ended September 30, 2020 and 2019, the change in Level 3 liabilities measured at fair value on a recurring basis was as follows:

	Junior Subordinated Debt
	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Beginning balance	$	(56,974)	$	(58,315)	$	(61,685)	$	(48,684)
Change in fair value (1)	(3,555)		794		1,156		(8,837)
Ending balance	$	(60,529)	$	(57,521)	$	(60,529)	$	(57,521)

Assets Measured at Fair Value on Nonrecurring Basis

The following table presents such assets carried on the Consolidated Balance Sheet by caption and by level within the ASC 825 hierarchy:

	Fair Value Measurements at the End of the Reporting Period Using
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Active Markets for Similar Assets (Level 2)		Unobservable Inputs (Level 3)
	(in thousands)
As of September 30, 2020:
Loans	$	245,219	$	—	$	—	$	245,219
Other assets acquired through foreclosure	8,591		—		—		8,591
As of December 31, 2019:
Loans	$	110,272	$	—	$	—	$	110,272
Other assets acquired through foreclosure	13,850		—		—		13,850

Estimated Fair Value of Financial Instruments

The estimated fair value of the Company’s financial instruments is as follows:

	September 30, 2020
	Carrying Amount		Fair Value
			Level 1		Level 2		Level 3		Total
	(in thousands)
Financial assets:
Investment securities:
HTM	$	504,477	$	—	$	548,140	$	—	$	548,140
AFS	3,975,225		25,208		3,950,017		—		3,975,225
Equity	160,561		134,811		25,750		—		160,561
Derivative assets	4,119		—		4,119		—		4,119
Loans, net	25,703,458		—		—		26,107,177		26,107,177
Accrued interest receivable	140,827		—		140,827		—		140,827
Financial liabilities:
Deposits	$	28,843,396	$	—	$	28,850,576	$	—	$	28,850,576
Customer repurchase agreements	19,688		—		19,688		—		19,688
Qualifying debt	618,772		—		566,308		72,628		638,936
Derivative liabilities	92,995		—		92,995		—		92,995
Accrued interest payable	15,666		—		15,666		—		15,666

	December 31, 2019
	Carrying Amount		Fair Value
			Level 1		Level 2		Level 3		Total
	(in thousands)
Financial assets:
Investment securities:
HTM	$	485,107	$	—	$	516,261	$	—	$	516,261
AFS	3,346,310		32,167		3,314,143		—		3,346,310
Equity securities	138,701		138,701		—		—		138,701
Derivative assets	1,903		—		1,903		—		1,903
Loans, net	20,955,499		—		—		21,256,462		21,256,462
Accrued interest receivable	108,694		—		108,694		—		108,694
Financial liabilities:
Deposits	$	22,796,493	$	—	$	22,813,265	$	—	$	22,813,265
Customer repurchase agreements	16,675		—		16,675		—		16,675
Qualifying debt	393,563		—		332,635		74,155		406,790
Derivative liabilities	55,570		—		55,570		—		55,570
Accrued interest payable	24,661		—		24,661		—		24,661

XML

Segments (Tables)

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Operating Segment Information

The following is a summary of operating segment information for the periods indicated:

			Regional Segments
Balance Sheet:	Consolidated Company		Arizona		Nevada		Southern California		Northern California
At September 30, 2020	(in millions)
Assets:
Cash, cash equivalents, and investment securities	$	6,119.8	$	1.5	$	8.8	$	1.8	$	2.3
Loans, net of deferred loan fees and costs	26,014.0		4,388.1		2,612.2		2,376.7		1,785.8
Less: allowance for credit losses	(310.5)		(57.0)		(36.4)		(31.5)		(19.3)
Total loans	25,703.5		4,331.1		2,575.8		2,345.2		1,766.5
Other assets acquired through foreclosure, net	8.6		—		8.5		—		—
Goodwill and other intangible assets, net	299.0		—		23.2		—		153.9
Other assets	1,204.6		47.8		60.1		16.2		20.1
Total assets	$	33,335.5	$	4,380.4	$	2,676.4	$	2,363.2	$	1,942.8
Liabilities:
Deposits	$	28,843.4	$	8,541.5	$	4,733.9	$	3,502.0	$	2,741.1
Borrowings and qualifying debt	628.8		—		—		—		—
Other liabilities	639.3		28.7		18.8		8.6		20.0
Total liabilities	30,111.5		8,570.2		4,752.7		3,510.6		2,761.1
Allocated equity:	3,224.0		576.4		343.7		281.2		361.5
Total liabilities and stockholders' equity	$	33,335.5	$	9,146.6	$	5,096.4	$	3,791.8	$	3,122.6
Excess funds provided (used)	—		4,766.2		2,420.0		1,428.6		1,179.8

Income Statement:
Three Months Ended September 30, 2020	(in thousands)
Net interest income	$	284,738	$	83,492	$	46,625	$	35,656	$	28,353
Provision for (recovery of) credit losses	14,661		9,830		8,548		5,213		1,856
Net interest income after provision for credit losses	270,077		73,662		38,077		30,443		26,497
Non-interest income	20,606		1,771		2,391		1,186		2,381
Non-interest expense	(124,092)		(17,644)		(15,800)		(14,020)		(12,885)
Income (loss) before income taxes	166,591		57,789		24,668		17,609		15,993
Income tax expense (benefit)	30,822		14,447		5,180		4,930		4,478
Net income	$	135,769	$	43,342	$	19,488	$	12,679	$	11,515

Nine Months Ended September 30, 2020	(in thousands)
Net interest income	$	852,158	$	229,701	$	139,328	$	104,348	$	85,345
Provision for (recovery of) credit losses	157,837		46,623		25,015		23,750		12,680
Net interest income after provision for credit losses	694,321		183,078		114,313		80,598		72,665
Non-interest income	46,985		4,943		7,355		3,269		6,450
Non-interest expense	(359,372)		(58,674)		(44,414)		(43,216)		(38,460)
Income (loss) before income taxes	381,934		129,347		77,254		40,651		40,655
Income tax expense (benefit)	68,929		32,207		16,164		11,241		11,340
Net income	$	313,005	$	97,140	$	61,090	$	29,410	$	29,315

	National Business Lines
Balance Sheet:	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
At September 30, 2020
Assets:	(in millions)
Cash, cash equivalents, and investment securities	$	—	$	—	$	—	$	—	$	26.6	$	6,078.8
Loans, net of deferred loan fees and costs	280.0		1,686.7		2,329.3		2,099.3		8,451.8		4.1
Less: allowance for credit losses	(2.3)		(17.9)		(41.5)		(40.7)		(63.9)		—
Total loans	277.7		1,668.8		2,287.8		2,058.6		8,387.9		4.1
Other assets acquired through foreclosure, net	—		—		—		—		0.1		—
Goodwill and other intangible assets, net	—		—		119.3		0.1		2.5		—
Other assets	5.4		11.9		9.2		33.4		110.3		890.2
Total assets	$	283.1	$	1,680.7	$	2,416.3	$	2,092.1	$	8,527.4	$	6,973.1
Liabilities:
Deposits	$	3,697.9	$	—	$	4,646.4	$	—	$	61.4	$	919.2
Borrowings and qualifying debt	—		—		—		—		—		628.8
Other liabilities	(2.7)		91.8		5.4		0.9		56.8		411.0
Total liabilities	3,695.2		91.8		4,651.8		0.9		118.2		1,959.0
Allocated equity:	104.9		130.3		397.5		167.5		673.2		187.8
Total liabilities and stockholders' equity	$	3,800.1	$	222.1	$	5,049.3	$	168.4	$	791.4	$	2,146.8
Excess funds provided (used)	3,517.0		(1,458.6)		2,633.0		(1,923.7)		(7,736.0)		(4,826.3)

Income Statement:
Three Months Ended September 30, 2020	(in thousands)
Net interest income	$	22,184	$	2,800	$	48,013	$	12,536	$	46,582	$	(41,503)
Provision for (recovery of) credit losses	(138)		781		(9,048)		2,200		(2,706)		(1,875)
Net interest income after provision for credit losses	22,322		2,019		57,061		10,336		49,288		(39,628)
Non-interest income	134		—		3,126		—		2,924		6,693
Non-interest expense	(9,896)		(1,724)		(11,530)		(2,596)		(12,335)		(25,662)
Income (loss) before income taxes	12,560		295		48,657		7,740		39,877		(58,597)
Income tax expense (benefit)	2,889		68		11,191		1,780		9,172		(23,313)
Net income	$	9,671	$	227	$	37,466	$	5,960	$	30,705	$	(35,284)

Nine Months Ended September 30, 2020	(in thousands)
Net interest income	$	67,740	$	6,351	$	137,436	$	39,442	$	128,096	$	(85,629)
Provision for (recovery of) credit losses	(2,198)		553		25,471		27,530		(4,737)		3,150
Net interest income after provision for credit losses	69,938		5,798		111,965		11,912		132,833		(88,779)
Non-interest income	350		—		9,247		—		4,108		11,263
Non-interest expense	(29,965)		(5,114)		(36,188)		(7,353)		(35,674)		(60,314)
Income (loss) before income taxes	40,323		684		85,024		4,559		101,267		(137,830)
Income tax expense (benefit)	9,361		380		19,461		893		23,083		(55,201)
Net income	$	30,962	$	304	$	65,563	$	3,666	$	78,184	$	(82,629)

			Regional Segments
Balance Sheet:	Consolidated Company		Arizona		Nevada		Southern California		Northern California
At December 31, 2019	(in millions)
Assets:
Cash, cash equivalents, and investment securities	$	4,471.2	$	1.8	$	9.0	$	2.3	$	2.2
Loans, net of deferred loan fees and costs	21,123.3		3,847.9		2,252.5		2,253.9		1,311.2
Less: allowance for credit losses	(167.8)		(31.6)		(18.0)		(18.3)		(9.7)
Total loans	20,955.5		3,816.3		2,234.5		2,235.6		1,301.5
Other assets acquired through foreclosure, net	13.9		—		13.0		0.9		—
Goodwill and other intangible assets, net	297.6		—		23.2		—		154.6
Other assets	1,083.7		48.6		59.4		15.0		19.8
Total assets	$	26,821.9	$	3,866.7	$	2,339.1	$	2,253.8	$	1,478.1
Liabilities:
Deposits	$	22,796.5	$	5,384.7	$	4,350.1	$	2,585.3	$	2,373.6
Borrowings and qualifying debt	393.6		—		—		—		—
Other liabilities	615.1		17.8		11.9		1.2		15.9
Total liabilities	23,805.2		5,402.5		4,362.0		2,586.5		2,389.5
Allocated equity:	3,016.7		453.6		301.0		253.3		312.5
Total liabilities and stockholders' equity	$	26,821.9	$	5,856.1	$	4,663.0	$	2,839.8	$	2,702.0
Excess funds provided (used)	—		1,989.4		2,323.9		586.0		1,223.9

Income Statement:
Three Months Ended September 30, 2019	(in thousands)
Net interest income	$	266,422	$	68,828	$	40,565	$	33,630	$	23,504
Provision for (recovery of) credit losses	3,803		103		(62)		(189)		218
Net interest income (expense) after provision for credit losses	262,619		68,725		40,627		33,819		23,286
Non-interest income	19,441		1,821		2,677		1,079		1,917
Non-interest expense	(126,152)		(27,241)		(15,211)		(15,185)		(12,379)
Income (loss) before income taxes	155,908		43,305		28,093		19,713		12,824
Income tax expense (benefit)	28,533		10,826		5,899		5,520		3,591
Net income	$	127,375	$	32,479	$	22,194	$	14,193	$	9,233

Nine Months Ended September 30, 2019	(in thousands)
Net interest income	$	768,439	$	183,772	$	119,191	$	95,751	$	70,533
Provision for (recovery of) credit losses	15,303		1,705		166		611		(653)
Net interest income (expense) after provision for credit losses	753,136		182,067		119,025		95,140		71,186
Non-interest income	49,069		5,050		7,926		3,054		6,299
Non-interest expense	(352,279)		(72,183)		(45,099)		(44,890)		(38,419)
Income (loss) before income taxes	449,926		114,934		81,852		53,304		39,066
Income tax expense (benefit)	78,819		28,733		17,189		14,925		10,939
Net income	$	371,107	$	86,201	$	64,663	$	38,379	$	28,127

	National Business Lines
Balance Sheet:	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
At December 31, 2019
Assets:	(in millions)
Cash, cash equivalents, and investment securities	$	—	$	—	$	—	$	—	$	10.1	$	4,445.8
Loans, net of deferred loan fees and costs	237.2		1,635.6		1,552.0		1,930.8		6,098.7		3.5
Less: allowance for credit losses	(2.0)		(13.7)		(12.6)		(12.6)		(49.3)		—
Total loans	235.2		1,621.9		1,539.4		1,918.2		6,049.4		3.5
Other assets acquired through foreclosure, net	—		—		—		—		—		—
Goodwill and other intangible assets, net	—		—		119.7		0.1		—		—
Other assets	1.2		18.3		7.3		8.8		64.3		841.0
Total assets	$	236.4	$	1,640.2	$	1,666.4	$	1,927.1	$	6,123.8	$	5,290.3
Liabilities:
Deposits	$	3,210.1	$	0.1	$	3,771.5	$	—	$	36.9	$	1,084.2
Borrowings and qualifying debt	—		—		—		—		—		393.6
Other liabilities	1.8		52.9		0.1		—		2.8		510.7
Total liabilities	3,211.9		53.0		3,771.6		—		39.7		1,988.5
Allocated equity:	84.5		131.6		317.5		158.5		494.3		509.9
Total liabilities and stockholders' equity	$	3,296.4	$	184.6	$	4,089.1	$	158.5	$	534.0	$	2,498.4
Excess funds provided (used)	3,060.0		(1,455.6)		2,422.7		(1,768.6)		(5,589.8)		(2,791.9)

Income Statement:
Three Months Ended September 30, 2019	(in thousands)
Net interest income (expense)	$	21,974	$	3,394	$	33,932	$	12,845	$	32,935	$	(5,185)
Provision for (recovery of) credit losses	60		(191)		895		1,956		1,210		(197)
Net interest income (expense) after provision for credit losses	21,914		3,585		33,037		10,889		31,725		(4,988)
Non-interest income	84		—		5,422		—		1,708		4,733
Non-interest expense	(9,769)		(1,845)		(12,068)		(2,197)		(11,320)		(18,937)
Income (loss) before income taxes	12,229		1,740		26,391		8,692		22,113		(19,192)
Income tax expense (benefit)	2,813		400		6,070		1,999		5,086		(13,671)
Net income	$	9,416	$	1,340	$	20,321	$	6,693	$	17,027	$	(5,521)

Nine Months Ended September 30, 2019	(in thousands)
Net interest income	$	64,520	$	10,278	$	91,871	$	39,279	$	88,212	$	5,032
Provision for (recovery of) credit losses	27		(136)		2,635		3,587		6,558		803
Net interest income (expense) after provision for credit losses	64,493		10,414		89,236		35,692		81,654		4,229
Non-interest income	268		—		10,946		—		3,915		11,611
Non-interest expense	(27,777)		(5,683)		(33,971)		(6,757)		(31,729)		(45,771)
Income (loss) before income taxes	36,984		4,731		66,211		28,935		53,840		(29,931)
Income tax expense (benefit)	8,506		1,088		15,229		6,655		12,383		(36,828)
Net income	$	28,478	$	3,643	$	50,982	$	22,280	$	41,457	$	6,897

XML

Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contracts with Customers [Abstract]

Disaggregation of Revenue [Table Text Block]

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Three Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	5,913	$	1,188	$	1,826	$	889	$	930
Debit and credit card interchange (1)	1,597		426		306		167		686
Success fees (2)	38		—		—		—		—
Other income	69		8		6		(1)		18
Total revenue from contracts with customers	$	7,617	$	1,622	$	2,138	$	1,055	$	1,634
Revenues outside the scope of ASC 606 (3)	12,989		149		253		131		747
Total non-interest income	$	20,606	$	1,771	$	2,391	$	1,186	$	2,381

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Nine Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	17,447	$	3,525	$	5,572	$	2,466	$	2,863
Debit and credit card interchange (1)	3,942		990		770		401		1,754
Success fees (2)	423		—		—		—		144
Other income	231		20		15		(6)		59
Total revenue from contracts with customers	$	22,043	$	4,535	$	6,357	$	2,861	$	4,820
Revenues outside the scope of ASC 606 (3)	24,942		408		998		408		1,630
Total non-interest income	$	46,985	$	4,943	$	7,355	$	3,269	$	6,450

(1)Included as part of Card income in the Consolidated Income Statement.

(2)Included as part of Income from equity investments in the Consolidated Income Statement.

(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Three Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	114	$	—	$	963	$	—	$	3	$	—
Debit and credit card interchange (1)	12		—		—		—		—		—
Success fees (2)	—		—		38		—		—		—
Other income	2		—		—		—		35		1
Total revenue from contracts with customers	$	128	$	—	$	1,001	$	—	$	38	$	1
Revenues outside the scope of ASC 606 (3)	6		—		2,125		—		2,886		6,692
Total non-interest income	$	134	$	—	$	3,126	$	—	$	2,924	$	6,693

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Nine Months Ended September 30, 2020	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	308	$	—	$	2,707	$	—	$	6	$	—
Debit and credit card interchange (1)	27		—		—		—		—		—
Success fees (2)	—		—		279		—		—		—
Other income	4		—		—		—		125		14
Total revenue from contracts with customers	$	339	$	—	$	2,986	$	—	$	131	$	14
Revenues outside the scope of ASC 606 (3)	11		—		6,261		—		3,977		11,249
Total non-interest income	$	350	$	—	$	9,247	$	—	$	4,108	$	11,263

(1)Included as part of Card income in the Consolidated Income Statement.

(2)Included as part of Income from equity investments in the Consolidated Income Statement.

(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Three Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	5,888	$	1,226	$	2,036	$	770	$	965
Debit and credit card interchange (1)	1,977		451		440		229		845
Success fees (2)	605		—		—		—		—
Other income	80		8		14		4		19
Total revenue from contracts with customers	$	8,550	$	1,685	$	2,490	$	1,003	$	1,829
Revenues outside the scope of ASC 606 (3)	10,891		136		187		76		88
Total non-interest income	$	19,441	$	1,821	$	2,677	$	1,079	$	1,917

			Regional Segments
	Consolidated Company		Arizona		Nevada		Southern California		Northern California
Nine Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	17,121	$	3,525	$	5,980	$	2,218	$	2,821
Debit and credit card interchange (1)	5,830		1,125		1,200		596		2,878
Success fees (2)	1,125		—		—		—		—
Other income	187		8		8		6		43
Total revenue from contracts with customers	$	24,263	$	4,658	$	7,188	$	2,820	$	5,742
Revenues outside the scope of ASC 606 (3)	24,806		392		738		234		557
Total non-interest income	$	49,069	$	5,050	$	7,926	$	3,054	$	6,299

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Three Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	77	$	—	$	813	$	—	$	1	$	—
Debit and credit card interchange (1)	12		—		—		—		—		—
Success fees (2)	—		—		605		—		—		—
Other income	(3)		—		—		—		35		3
Total revenue from contracts with customers	$	86	$	—	$	1,418	$	—	$	36	$	3
Revenues outside the scope of ASC 606 (3)	(2)		—		4,004		—		1,672		4,730
Total non-interest income	$	84	$	—	$	5,422	$	—	$	1,708	$	4,733

	National Business Lines
	HOA Services		Public & Nonprofit Finance		Technology & Innovation		Hotel Franchise Finance		Other NBLs		Corporate & Other
Nine Months Ended September 30, 2019	(in thousands)
Revenue from contracts with customers:
Service charges and fees	$	241	$	—	$	2,333	$	—	$	3	$	—
Debit and credit card interchange (1)	31		—		—		—		—		—
Success fees (2)	—		—		1,125		—		—		—
Other income	2		—		4		—		109		7
Total revenue from contracts with customers	$	274	$	—	$	3,462	$	—	$	112	$	7
Revenues outside the scope of ASC 606 (3)	(6)		—		7,484		—		3,803		11,604
Total non-interest income	$	268	$	—	$	10,946	$	—	$	3,915	$	11,611

XML

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($) Subsidiary	Jun. 30, 2020 USD ($)	Jan. 01, 2020 USD ($)	Dec. 31, 2019 USD ($)
Significant Of Accounting Policies [Line Items]
Number Of Wholly Owned Subsidiaries Non Bank Subsidiaries | Subsidiary	2
Number Of Unconsolidated Subsidiaries | Subsidiary	8
Debt Securities, Held-to-maturity, Allowance for Credit Loss	$ 5,964	$ 7,649	$ 2,646	$ 0
Loans and Leases Receivable, Allowance	310,560			167,797
Deferred Income Tax Assets, Net	46,645			18,025
Off-Balance Sheet, Credit Loss, Liability	44,400			8,955
Retained earnings	$ (1,833,012)			$ (1,680,317)
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Significant Of Accounting Policies [Line Items]
Debt Securities, Held-to-maturity, Allowance for Credit Loss			2,646
Loans and Leases Receivable, Allowance			186,925
Deferred Income Tax Assets, Net			26,675
Off-Balance Sheet, Credit Loss, Liability			24,044
Retained earnings			(1,655,370)
Cumulative Effect, Period of Adoption, Adjustment [Member]
Significant Of Accounting Policies [Line Items]
Debt Securities, Held-to-maturity, Allowance for Credit Loss			2,646
Loans and Leases Receivable, Allowance			19,128
Deferred Income Tax Assets, Net			8,650
Off-Balance Sheet, Credit Loss, Liability			15,089
Retained earnings			$ (24,947)

XML

Investment Securities - Carrying Amounts and Fair Values of Investment Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2020		Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	$ 160,561	[1]	$ 138,701	[2]
Debt Securities, Held-to-maturity	504,477		485,107
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	43,663		31,303
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	0		(149)
Debt Securities, Held-to-maturity, Fair Value	548,140		516,261
Securities available for sale Total, Amortized Cost	3,876,586		3,317,928
Securities available-for-sale, Gross Unrealized Gains	116,671		48,252
Securities available-for-sale, Gross Unrealized (Losses)	(18,032)		(19,870)
Securities available for sale Total, Estimated Fair Value	3,975,225	[1]	3,346,310	[2]
Equity Securities, FV-NI, Cost	158,164		135,319
Equity Securities, FV-NI, Unrealized Gain	4,331		3,881
Equity Securities, FV-NI, Unrealized Loss	1,934		499
Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost	50		50
Securities available-for-sale, Gross Unrealized Gains	8,126		10,092
Securities available-for-sale, Gross Unrealized (Losses)	0		0
Securities available for sale Total, Estimated Fair Value	8,176		10,142
Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost	91,769		95,062
Securities available-for-sale, Gross Unrealized Gains	3,888		366
Securities available-for-sale, Gross Unrealized (Losses)	0		(1,175)
Securities available for sale Total, Estimated Fair Value	95,657		94,253
Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost	193,798		105,015
Securities available-for-sale, Gross Unrealized Gains	1,081		112
Securities available-for-sale, Gross Unrealized (Losses)	(8,270)		(5,166)
Securities available for sale Total, Estimated Fair Value	186,609		99,961
Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost	22,006		7,494
Securities available-for-sale, Gross Unrealized Gains	271		279
Securities available-for-sale, Gross Unrealized (Losses)	(118)		0
Securities available for sale Total, Estimated Fair Value	22,159		7,773
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost	1,245,217		1,129,985
Securities available-for-sale, Gross Unrealized Gains	19,874		3,572
Securities available-for-sale, Gross Unrealized (Losses)	(854)		(4,330)
Securities available for sale Total, Estimated Fair Value	1,264,237		1,129,227
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost	1,329,773		1,406,594
Securities available-for-sale, Gross Unrealized Gains	32,314		9,283
Securities available-for-sale, Gross Unrealized (Losses)	(531)		(3,817)
Securities available for sale Total, Estimated Fair Value	1,361,556		1,412,060
Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	504,477		485,107
Securities available for sale Total, Amortized Cost	961,373		530,729
Securities available-for-sale, Gross Unrealized Gains	51,117		24,548
Securities available-for-sale, Gross Unrealized (Losses)	(1,467)		(422)
Securities available for sale Total, Estimated Fair Value	1,011,023		554,855
Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost	32,000		32,000
Securities available-for-sale, Gross Unrealized Gains	0		0
Securities available-for-sale, Gross Unrealized (Losses)	(6,792)		(4,960)
Securities available for sale Total, Estimated Fair Value	25,208		27,040
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost			10,000
Securities available-for-sale, Gross Unrealized Gains			0
Securities available-for-sale, Gross Unrealized (Losses)			0
Securities available for sale Total, Estimated Fair Value			10,000
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Amortized Cost	600		999
Securities available-for-sale, Gross Unrealized Gains	0		0
Securities available-for-sale, Gross Unrealized (Losses)	0		0
Securities available for sale Total, Estimated Fair Value	600		999
CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	53,545		52,504
Equity Securities, FV-NI, Cost	53,190		52,805
Equity Securities, FV-NI, Unrealized Gain	355		0
Equity Securities, FV-NI, Unrealized Loss	0		301
Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	107,016		86,197
Equity Securities, FV-NI, Cost	104,974		82,514
Equity Securities, FV-NI, Unrealized Gain	3,976		3,881
Equity Securities, FV-NI, Unrealized Loss	1,934		198
AAA [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0	[1]	0	[2]
Securities available for sale Total, Estimated Fair Value	1,278,498	[1]	1,149,519	[2]
AAA [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AAA [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AAA [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AAA [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AAA [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	1,235,170		1,096,909
AAA [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AAA [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Securities available for sale Total, Estimated Fair Value	43,328		52,610
AAA [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AAA [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value			0
AAA [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AAA [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AAA [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
Split-rated AAA/AA Plus [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	27,795	[1]	25,375	[2]
Securities available for sale Total, Estimated Fair Value	1,514,538	[1]	1,520,168	[2]
Split-rated AAA/AA Plus [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Split-rated AAA/AA Plus [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	95,657		94,253
Split-rated AAA/AA Plus [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Split-rated AAA/AA Plus [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Split-rated AAA/AA Plus [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Split-rated AAA/AA Plus [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	1,361,556		1,412,060
Split-rated AAA/AA Plus [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Securities available for sale Total, Estimated Fair Value	56,725		2,856
Split-rated AAA/AA Plus [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Split-rated AAA/AA Plus [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value			10,000
Split-rated AAA/AA Plus [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	600		999
Split-rated AAA/AA Plus [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	27,795		25,375
Split-rated AAA/AA Plus [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AA Plus to AA- [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0	[1]	0	[2]
Securities available for sale Total, Estimated Fair Value	487,454	[1]	358,332	[2]
AA Plus to AA- [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AA Plus to AA- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AA Plus to AA- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AA Plus to AA- [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	12,143		0
AA Plus to AA- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	27,682		30,675
AA Plus to AA- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AA Plus to AA- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Securities available for sale Total, Estimated Fair Value	447,629		327,657
AA Plus to AA- [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AA Plus to AA- [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value			0
AA Plus to AA- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
AA Plus to AA- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AA Plus to AA- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
A Plus to A- [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0	[1]	0	[2]
Securities available for sale Total, Estimated Fair Value	477,350	[1]	238,443	[2]
A Plus to A- [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
A Plus to A- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
A Plus to A- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	45,800		66,530
A Plus to A- [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
A Plus to A- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	91		181
A Plus to A- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
A Plus to A- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Securities available for sale Total, Estimated Fair Value	431,459		171,732
A Plus to A- [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
A Plus to A- [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value			0
A Plus to A- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
A Plus to A- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
A Plus to A- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
BBB Plus to BBB- [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	68,945	[1]	82,851	[2]
Securities available for sale Total, Estimated Fair Value	150,764	[1]	60,759	[2]
BBB Plus to BBB- [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BBB Plus to BBB- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BBB Plus to BBB- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	122,579		33,431
BBB Plus to BBB- [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	2,630		0
BBB Plus to BBB- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	347		288
BBB Plus to BBB- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BBB Plus to BBB- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Securities available for sale Total, Estimated Fair Value	0		0
BBB Plus to BBB- [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	25,208		27,040
BBB Plus to BBB- [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value			0
BBB Plus to BBB- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BBB Plus to BBB- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
BBB Plus to BBB- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	68,945		82,851
BB Plus and below [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	37,135	[1]	2,105	[2]
Securities available for sale Total, Estimated Fair Value	27,353	[1]	11,316	[2]
BB Plus and below [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	8,176		10,142
BB Plus and below [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BB Plus and below [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	18,230		0
BB Plus and below [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BB Plus and below [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	947		1,174
BB Plus and below [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BB Plus and below [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Securities available for sale Total, Estimated Fair Value	0		0
BB Plus and below [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BB Plus and below [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value			0
BB Plus and below [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
BB Plus and below [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
BB Plus and below [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	37,135		2,105
Corporate Credit Quality Indicator Unrated [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	26,686	[1]	28,370	[2]
Securities available for sale Total, Estimated Fair Value	39,268	[1]	7,773	[2]
Corporate Credit Quality Indicator Unrated [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Corporate Credit Quality Indicator Unrated [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Corporate Credit Quality Indicator Unrated [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Corporate Credit Quality Indicator Unrated [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	7,386		7,773
Corporate Credit Quality Indicator Unrated [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Corporate Credit Quality Indicator Unrated [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Corporate Credit Quality Indicator Unrated [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	504,477		485,107
Securities available for sale Total, Estimated Fair Value	31,882		0
Corporate Credit Quality Indicator Unrated [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Corporate Credit Quality Indicator Unrated [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value			0
Corporate Credit Quality Indicator Unrated [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale Total, Estimated Fair Value	0		0
Corporate Credit Quality Indicator Unrated [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	25,750		27,129
Corporate Credit Quality Indicator Unrated [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	$ 936		$ 1,241

[1] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

[2] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

XML

Investment Securities - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Pledged Securities [Abstract]
Accrued Investment Income Receivable	$ 1.8
Pledged Financial Instruments, Not Separately Reported, Other Debt Securities Available-for-sale or Held-for-investment	$ 830.4	$ 962.5

XML

Investment Securities - Unrealized Losses and Fair Value of Investment Securities in Continuous Unrealized Loss Position (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) positions	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) positions	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) positions
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | positions	73		73		158
Available-for-sale securities, Less Than Twelve Months, Aggregate Losses	$ 3,028		$ 3,028		$ 4,023
Available-for-sale securities, Less Than Twelve Months, Fair Value	427,743		427,743		799,113
Available-for-sale securities, Twelve Months or Longer, Aggregate Losses	15,004		15,004		15,847
Available-for-sale securities, Twelve Months or Longer, Fair Value	120,636		120,636		585,688
Available-for-sale securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	18,032		18,032		19,870
Available-for-sale securities, Continuous Unrealized Loss Position, Fair Value, Total	548,379		548,379		1,384,801
Unrealized gains (losses) on assets measured at fair value, net	5,882	$ 222	(986)	$ 4,628
Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, Less Than Twelve Months, Aggregate Losses	70		70		0
Available-for-sale securities, Less Than Twelve Months, Fair Value	31,528		31,528		0
Available-for-sale securities, Twelve Months or Longer, Aggregate Losses	8,200		8,200		5,166
Available-for-sale securities, Twelve Months or Longer, Fair Value	91,800		91,800		94,834
Available-for-sale securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	8,270		8,270		5,166
Available-for-sale securities, Continuous Unrealized Loss Position, Fair Value, Total	123,328		123,328		94,834
Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, Less Than Twelve Months, Aggregate Losses	118		118
Available-for-sale securities, Less Than Twelve Months, Fair Value	9,384		9,384
Available-for-sale securities, Twelve Months or Longer, Aggregate Losses	0		0
Available-for-sale securities, Twelve Months or Longer, Fair Value	0		0
Available-for-sale securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	118		118
Available-for-sale securities, Continuous Unrealized Loss Position, Fair Value, Total	9,384		9,384
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, Less Than Twelve Months, Aggregate Losses	522		522		1,740
Available-for-sale securities, Less Than Twelve Months, Fair Value	134,180		134,180		385,643
Available-for-sale securities, Twelve Months or Longer, Aggregate Losses	9		9		2,077
Available-for-sale securities, Twelve Months or Longer, Fair Value	1,193		1,193		150,419
Available-for-sale securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	531		531		3,817
Available-for-sale securities, Continuous Unrealized Loss Position, Fair Value, Total	135,373		135,373		536,062
Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss					149
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value					24,325
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss					0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value					0
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain					149
Held-to-maturity Securities, Fair Value					24,325
Available-for-sale securities, Less Than Twelve Months, Aggregate Losses	1,467		1,467		422
Available-for-sale securities, Less Than Twelve Months, Fair Value	121,031		121,031		67,150
Available-for-sale securities, Twelve Months or Longer, Aggregate Losses	0		0		0
Available-for-sale securities, Twelve Months or Longer, Fair Value	0		0		0
Available-for-sale securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	1,467		1,467		422
Available-for-sale securities, Continuous Unrealized Loss Position, Fair Value, Total	121,031		121,031		67,150
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, Less Than Twelve Months, Aggregate Losses	851		851		1,776
Available-for-sale securities, Less Than Twelve Months, Fair Value	131,620		131,620		337,285
Available-for-sale securities, Twelve Months or Longer, Aggregate Losses	3		3		2,554
Available-for-sale securities, Twelve Months or Longer, Fair Value	2,435		2,435		258,791
Available-for-sale securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	854		854		4,330
Available-for-sale securities, Continuous Unrealized Loss Position, Fair Value, Total	134,055		134,055		596,076
Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, Less Than Twelve Months, Aggregate Losses	0		0		0
Available-for-sale securities, Less Than Twelve Months, Fair Value	0		0		0
Available-for-sale securities, Twelve Months or Longer, Aggregate Losses	6,792		6,792		4,960
Available-for-sale securities, Twelve Months or Longer, Fair Value	25,208		25,208		27,040
Available-for-sale securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	6,792		6,792		4,960
Available-for-sale securities, Continuous Unrealized Loss Position, Fair Value, Total	$ 25,208		$ 25,208		27,040
Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, Less Than Twelve Months, Aggregate Losses					85
Available-for-sale securities, Less Than Twelve Months, Fair Value					9,035
Available-for-sale securities, Twelve Months or Longer, Aggregate Losses					1,090
Available-for-sale securities, Twelve Months or Longer, Fair Value					54,604
Available-for-sale securities, Continuous Unrealized Loss Position, Aggregate Losses, Total					1,175
Available-for-sale securities, Continuous Unrealized Loss Position, Fair Value, Total					$ 63,639

XML

Investment Securities - Amortized Cost and Fair Value of Investment Securities by Contractual Maturities (Detail) - USD ($) $ in Thousands	Sep. 30, 2020		Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	$ 7,330
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	17,135
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost	480,012
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	7,336
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	17,628
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	523,176
Debt Securities, Held-to-maturity	504,477		$ 485,107
Debt Securities, Held-to-maturity, Fair Value	548,140		516,261
Securities available for sale, Due in one year or less, Amortized Cost	600
Securities available for sale, After one year through five years, Amortized Cost	9,024
Securities available for sale, After five years through ten years, Amortized Cost	229,899
Securities available for sale, After ten years, Amortized Cost	970,304
Securities available for sale, Mortgage backed securities, Amortized Cost	2,666,759
Securities available for sale Total, Amortized Cost	3,876,586		3,317,928
Securities available for sale, Due in one year or less, Estimated Fair Value	600
Securities available for sale, After one year through five years, Estimated Fair Value	9,047
Securities available for sale, After five years through ten years, Estimated Fair Value	223,844
Securities available for sale, After ten years, Estimated Fair Value	1,020,284
Securities available for sale, Mortgage backed securities, Estimated Fair Value	2,721,450
Securities available for sale Total, Estimated Fair Value	$ 3,975,225	[1]	$ 3,346,310	[2]

[1] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

[2] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

XML

Investment Securities - Investment Securities by Credit Rating Type (Detail) - USD ($) $ in Thousands	Sep. 30, 2020		Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	$ 504,477		$ 485,107
Available-for-sale Securities	3,975,225	[1]	3,346,310	[2]
Investment securities - equity	160,561	[1]	138,701	[2]
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	1,361,556		1,412,060
Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	504,477		485,107
Available-for-sale Securities	1,011,023		554,855
Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	95,657		94,253
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	1,264,237		1,129,227
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities			10,000
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	600		999
Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	107,016		86,197
Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	25,208		27,040
Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	8,176		10,142
Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	186,609		99,961
Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	22,159		7,773
CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	53,545		52,504
AAA [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	1,278,498	[1]	1,149,519	[2]
Investment securities - equity	0	[1]	0	[2]
AAA [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AAA [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Available-for-sale Securities	43,328		52,610
AAA [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AAA [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	1,235,170		1,096,909
AAA [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities			0
AAA [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AAA [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AAA [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AAA [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AAA [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AAA [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AAA [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
Split-rated AAA/AA Plus [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	1,514,538	[1]	1,520,168	[2]
Investment securities - equity	27,795	[1]	25,375	[2]
Split-rated AAA/AA Plus [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	1,361,556		1,412,060
Split-rated AAA/AA Plus [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Available-for-sale Securities	56,725		2,856
Split-rated AAA/AA Plus [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	95,657		94,253
Split-rated AAA/AA Plus [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Split-rated AAA/AA Plus [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities			10,000
Split-rated AAA/AA Plus [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	600		999
Split-rated AAA/AA Plus [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
Split-rated AAA/AA Plus [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Split-rated AAA/AA Plus [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Split-rated AAA/AA Plus [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Split-rated AAA/AA Plus [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Split-rated AAA/AA Plus [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	27,795		25,375
AA Plus to AA- [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	487,454	[1]	358,332	[2]
Investment securities - equity	0	[1]	0	[2]
AA Plus to AA- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AA Plus to AA- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Available-for-sale Securities	447,629		327,657
AA Plus to AA- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AA Plus to AA- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	27,682		30,675
AA Plus to AA- [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities			0
AA Plus to AA- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AA Plus to AA- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
AA Plus to AA- [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AA Plus to AA- [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AA Plus to AA- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
AA Plus to AA- [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	12,143		0
AA Plus to AA- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
A Plus to A- [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	477,350	[1]	238,443	[2]
Investment securities - equity	0	[1]	0	[2]
A Plus to A- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
A Plus to A- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Available-for-sale Securities	431,459		171,732
A Plus to A- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
A Plus to A- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	91		181
A Plus to A- [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities			0
A Plus to A- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
A Plus to A- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
A Plus to A- [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
A Plus to A- [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
A Plus to A- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	45,800		66,530
A Plus to A- [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
A Plus to A- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
BBB Plus to BBB- [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	150,764	[1]	60,759	[2]
Investment securities - equity	68,945	[1]	82,851	[2]
BBB Plus to BBB- [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BBB Plus to BBB- [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Available-for-sale Securities	0		0
BBB Plus to BBB- [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BBB Plus to BBB- [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	347		288
BBB Plus to BBB- [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities			0
BBB Plus to BBB- [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BBB Plus to BBB- [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	68,945		82,851
BBB Plus to BBB- [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	25,208		27,040
BBB Plus to BBB- [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BBB Plus to BBB- [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	122,579		33,431
BBB Plus to BBB- [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	2,630		0
BBB Plus to BBB- [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
BB Plus and below [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	27,353	[1]	11,316	[2]
Investment securities - equity	37,135	[1]	2,105	[2]
BB Plus and below [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BB Plus and below [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	0		0
Available-for-sale Securities	0		0
BB Plus and below [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BB Plus and below [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	947		1,174
BB Plus and below [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities			0
BB Plus and below [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BB Plus and below [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	37,135		2,105
BB Plus and below [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BB Plus and below [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	8,176		10,142
BB Plus and below [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	18,230		0
BB Plus and below [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
BB Plus and below [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	0		0
Corporate Credit Quality Indicator Unrated [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	39,268	[1]	7,773	[2]
Investment securities - equity	26,686	[1]	28,370	[2]
Corporate Credit Quality Indicator Unrated [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Corporate Credit Quality Indicator Unrated [Member] | Nontaxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Held-to-maturity	504,477		485,107
Available-for-sale Securities	31,882		0
Corporate Credit Quality Indicator Unrated [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Corporate Credit Quality Indicator Unrated [Member] | Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Corporate Credit Quality Indicator Unrated [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities			0
Corporate Credit Quality Indicator Unrated [Member] | US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Corporate Credit Quality Indicator Unrated [Member] | Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	936		1,241
Corporate Credit Quality Indicator Unrated [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Corporate Credit Quality Indicator Unrated [Member] | Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Corporate Credit Quality Indicator Unrated [Member] | Corporate Bond Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0		0
Corporate Credit Quality Indicator Unrated [Member] | Taxable Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	7,386		7,773
Corporate Credit Quality Indicator Unrated [Member] | CRA investments [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities - equity	$ 25,750		$ 27,129

[1] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

[2] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

XML

Investment Securities - Gross Gains and (Losses) on Sales of Investments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities, Gross Realized Gains	$ 0	$ 3,152	$ 405	$ 3,152
Available-for-sale Securities, Gross Realized Losses	0	0	(175)	0
Debt Securities, Available-for-sale, Realized Gain (Loss)	$ 0	$ 3,152	$ 230	$ 3,152

XML

Investment Securities Investment Securities - Allowance for Credit Losses - HTM (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Debt Securities, Held-to-maturity, Allowance for Credit Loss	$ 5,964	$ 5,964	$ 7,649	$ 2,646	$ 0
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Period Increase (Decrease)	(1,685)	3,318
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Writeoff	0	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Recovery	$ 0	$ 0
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Debt Securities, Held-to-maturity, Allowance for Credit Loss				$ 2,646

XML

Loans, Leases and Allowance for Credit Losses - Schedule of Held for Investment Loan Portfolio Composition of Loans, Leases and Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 25,993,254	$ 21,101,493
Loans and Leases Receivable, Allowance	(310,560)	(167,797)
Loans, net	25,682,694	20,933,696
Net deferred loan fees and costs	(81,400)	(47,700)
Receivable with Imputed Interest, Premium	22,100	19,600
Loans Receivable Held-for-sale, Amount	20,764	21,803
Tech & Innovation [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,277,889
Other commercial and industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,993,712
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,970,163	2,316,913
Loans and Leases Receivable, Allowance		(13,842)
Hotel franchise finance [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,942,886
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,433,932
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,330,064	2,147,664
Loans and Leases Receivable, Allowance		(13,714)
Construction And Land Development Land [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,267,922	775,248
Warehouse lending [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,926,852
Municipal and nonprofit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,686,690
Other, loan segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 163,144
Commercial and industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		9,382,043
Loans and Leases Receivable, Allowance		(82,302)
Commercial Real Estate Non Owner Occupied Multi Family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,245,634
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		57,083
Loans and Leases Receivable, Allowance		$ (614)

XML

Loans, Leases and Allowance for Credit Losses - Summary of Recorded Investment in Nonaccrual Loans and Loans Past Due 90 Days Still Accruing Interest by Loan Class (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	$ 108,239		$ 108,239
Nonaccrual with an Allowance for Credit Loss	17,470		17,470
Total Non-accrual	125,709		125,709		$ 55,968
Financing Receivable, 90 Days or More Past Due, Still Accruing	28,129		28,129		0
Loans Receivable Held-for-sale, Amount	20,764		20,764		21,803
Financing Receivable, Not Past Due	25,940,867		25,940,867		21,065,187
Financing Receivable, Past Due	52,387		52,387		36,306
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	1,700	$ 700	4,100	$ 1,500
Loans and Leases Receivable, Net of Deferred Income	25,993,254		25,993,254		21,101,493
Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	18,725		18,725
Nonaccrual with an Allowance for Credit Loss	0		0
Total Non-accrual	18,725		18,725
Financing Receivable, 90 Days or More Past Due, Still Accruing	0		0
Financing Receivable, Not Past Due	2,277,889		2,277,889
Financing Receivable, Past Due	0		0
Loans and Leases Receivable, Net of Deferred Income	2,277,889		2,277,889
Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	26,997		26,997
Nonaccrual with an Allowance for Credit Loss	4,614		4,614
Total Non-accrual	31,611		31,611
Financing Receivable, 90 Days or More Past Due, Still Accruing	16,866		16,866
Financing Receivable, Not Past Due	5,969,739		5,969,739
Financing Receivable, Past Due	23,973		23,973
Loans and Leases Receivable, Net of Deferred Income	5,993,712		5,993,712
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	38,567		38,567
Nonaccrual with an Allowance for Credit Loss	0		0
Total Non-accrual	38,567		38,567		4,542
Financing Receivable, 90 Days or More Past Due, Still Accruing	0		0		0
Financing Receivable, Not Past Due	1,970,163		1,970,163
Financing Receivable, Past Due	0		0
Loans and Leases Receivable, Net of Deferred Income	1,970,163		1,970,163		2,316,913
Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0		0
Nonaccrual with an Allowance for Credit Loss	0		0
Total Non-accrual	0		0
Financing Receivable, 90 Days or More Past Due, Still Accruing	11,263		11,263
Financing Receivable, Not Past Due	1,931,623		1,931,623
Financing Receivable, Past Due	11,263		11,263
Loans and Leases Receivable, Net of Deferred Income	1,942,886		1,942,886
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	18,404		18,404
Nonaccrual with an Allowance for Credit Loss	10,667		10,667
Total Non-accrual	29,071		29,071
Financing Receivable, 90 Days or More Past Due, Still Accruing	0		0
Financing Receivable, Not Past Due	3,433,932		3,433,932
Financing Receivable, Past Due	0		0
Loans and Leases Receivable, Net of Deferred Income	3,433,932		3,433,932
Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	5,388		5,388
Nonaccrual with an Allowance for Credit Loss	0		0
Total Non-accrual	5,388		5,388		5,600
Financing Receivable, 90 Days or More Past Due, Still Accruing	0		0		0
Financing Receivable, Not Past Due	2,319,530		2,319,530		2,134,346
Financing Receivable, Past Due	10,534		10,534		13,318
Loans and Leases Receivable, Net of Deferred Income	2,330,064		2,330,064		2,147,664
Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0		0
Nonaccrual with an Allowance for Credit Loss	192		192
Total Non-accrual	192		192
Financing Receivable, 90 Days or More Past Due, Still Accruing	0		0
Financing Receivable, Not Past Due	2,261,348		2,261,348
Financing Receivable, Past Due	6,574		6,574
Loans and Leases Receivable, Net of Deferred Income	2,267,922		2,267,922		1,952,156
Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0		0
Nonaccrual with an Allowance for Credit Loss	0		0
Total Non-accrual	0		0
Financing Receivable, 90 Days or More Past Due, Still Accruing	0		0
Financing Receivable, Not Past Due	3,926,852		3,926,852
Financing Receivable, Past Due	0		0
Loans and Leases Receivable, Net of Deferred Income	3,926,852		3,926,852
Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	0		0
Nonaccrual with an Allowance for Credit Loss	1,952		1,952
Total Non-accrual	1,952		1,952
Financing Receivable, 90 Days or More Past Due, Still Accruing	0		0
Financing Receivable, Not Past Due	1,686,690		1,686,690
Financing Receivable, Past Due	0		0
Loans and Leases Receivable, Net of Deferred Income	1,686,690		1,686,690
Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance for Credit Loss	158		158
Nonaccrual with an Allowance for Credit Loss	45		45
Total Non-accrual	203		203
Financing Receivable, 90 Days or More Past Due, Still Accruing	0		0
Financing Receivable, Not Past Due	163,101		163,101
Financing Receivable, Past Due	43		43
Loans and Leases Receivable, Net of Deferred Income	163,144		163,144
Commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					24,501
Financing Receivable, 90 Days or More Past Due, Still Accruing					0
Financing Receivable, Not Past Due					9,376,377
Financing Receivable, Past Due					5,666
Loans and Leases Receivable, Net of Deferred Income					9,382,043
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					19,178
Financing Receivable, 90 Days or More Past Due, Still Accruing					0
Loans and Leases Receivable, Net of Deferred Income					5,245,634
Multi-family [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Financing Receivable, 90 Days or More Past Due, Still Accruing					0
Construction And Land Development Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					2,147
Financing Receivable, 90 Days or More Past Due, Still Accruing					0
Financing Receivable, Not Past Due					1,176,908
Financing Receivable, Past Due					0
Loans and Leases Receivable, Net of Deferred Income					1,176,908
Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Financing Receivable, 90 Days or More Past Due, Still Accruing					0
Financing Receivable, Not Past Due					775,248
Financing Receivable, Past Due					0
Loans and Leases Receivable, Net of Deferred Income	2,267,922		2,267,922		775,248
Consumer Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Financing Receivable, 90 Days or More Past Due, Still Accruing					0
Financing Receivable, Not Past Due					57,083
Financing Receivable, Past Due					0
Loans and Leases Receivable, Net of Deferred Income					57,083
Performing Financial Instruments [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					34,141
Performing Financial Instruments [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					4,418
Performing Financial Instruments [Member] | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					1,231
Performing Financial Instruments [Member] | Commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					19,080
Performing Financial Instruments [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					7,265
Performing Financial Instruments [Member] | Multi-family [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Performing Financial Instruments [Member] | Construction And Land Development Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					2,147
Performing Financial Instruments [Member] | Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Performing Financial Instruments [Member] | Consumer Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Nonperforming Financial Instruments [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					21,827
Nonperforming Financial Instruments [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					124
Nonperforming Financial Instruments [Member] | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					4,369
Nonperforming Financial Instruments [Member] | Commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					5,421
Nonperforming Financial Instruments [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					11,913
Nonperforming Financial Instruments [Member] | Multi-family [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Nonperforming Financial Instruments [Member] | Construction And Land Development Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Nonperforming Financial Instruments [Member] | Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					0
Nonperforming Financial Instruments [Member] | Consumer Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Total Non-accrual					$ 0
Non Accrual Loans [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans Receivable Held-for-sale, Amount	$ 20,800		$ 20,800

XML

Contractual Aging of Loan Portfolio by Segment - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	$ 25,940,867	$ 21,065,187
Financing Receivable, Past Due	52,387	36,306
Loans and Leases Receivable, Net of Deferred Income	25,993,254	21,101,493
Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	2,277,889
Financing Receivable, Past Due	0
Loans and Leases Receivable, Net of Deferred Income	2,277,889
Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	5,969,739
Financing Receivable, Past Due	23,973
Loans and Leases Receivable, Net of Deferred Income	5,993,712
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	1,970,163
Financing Receivable, Past Due	0
Loans and Leases Receivable, Net of Deferred Income	1,970,163	2,316,913
Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	1,931,623
Financing Receivable, Past Due	11,263
Loans and Leases Receivable, Net of Deferred Income	1,942,886
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	3,433,932
Financing Receivable, Past Due	0
Loans and Leases Receivable, Net of Deferred Income	3,433,932
Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	2,319,530	2,134,346
Financing Receivable, Past Due	10,534	13,318
Loans and Leases Receivable, Net of Deferred Income	2,330,064	2,147,664
Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	2,261,348
Financing Receivable, Past Due	6,574
Loans and Leases Receivable, Net of Deferred Income	2,267,922	1,952,156
Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	3,926,852
Financing Receivable, Past Due	0
Loans and Leases Receivable, Net of Deferred Income	3,926,852
Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	1,686,690
Financing Receivable, Past Due	0
Loans and Leases Receivable, Net of Deferred Income	1,686,690
Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due	163,101
Financing Receivable, Past Due	43
Loans and Leases Receivable, Net of Deferred Income	163,144
Commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due		9,376,377
Financing Receivable, Past Due		5,666
Loans and Leases Receivable, Net of Deferred Income		9,382,043
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,245,634
Construction And Land Development Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due		1,176,908
Financing Receivable, Past Due		0
Loans and Leases Receivable, Net of Deferred Income		1,176,908
Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due		775,248
Financing Receivable, Past Due		0
Loans and Leases Receivable, Net of Deferred Income	2,267,922	775,248
Consumer Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due		57,083
Financing Receivable, Past Due		0
Loans and Leases Receivable, Net of Deferred Income		57,083
Commercial Real Estate [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due		2,316,165
Financing Receivable, Past Due		748
Loans and Leases Receivable, Net of Deferred Income		2,316,913
Commercial Real Estate [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due		5,007,644
Financing Receivable, Past Due		16,574
Loans and Leases Receivable, Net of Deferred Income		5,024,218
Commercial Real Estate [Member] | Multi-family [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Not Past Due		221,416
Financing Receivable, Past Due		0
Loans and Leases Receivable, Net of Deferred Income		221,416
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	21,554	15,413
Financial Asset, 30 to 59 Days Past Due [Member] | Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 30 to 59 Days Past Due [Member] | Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	4,617
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 30 to 59 Days Past Due [Member] | Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 30 to 59 Days Past Due [Member] | Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	10,325	7,627
Financial Asset, 30 to 59 Days Past Due [Member] | Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	6,574
Financial Asset, 30 to 59 Days Past Due [Member] | Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 30 to 59 Days Past Due [Member] | Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 30 to 59 Days Past Due [Member] | Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	38
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		2,501
Financial Asset, 30 to 59 Days Past Due [Member] | Construction And Land Development Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 30 to 59 Days Past Due [Member] | Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		624
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		4,661
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Multi-family [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	2,704	2,358
Financial Asset, 60 to 89 Days Past Due [Member] | Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	2,490
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	209	1,721
Financial Asset, 60 to 89 Days Past Due [Member] | Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	5
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		637
Financial Asset, 60 to 89 Days Past Due [Member] | Construction And Land Development Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 60 to 89 Days Past Due [Member] | Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Multi-family [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	28,129	18,535
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Tech & Innovation [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	16,866
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Hotel franchise finance [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	11,263
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0	3,970
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction And Land Development [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Warehouse lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Municipal and nonprofit [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other, loan segment
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due	$ 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial and industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		2,528
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction And Land Development Construction [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction And Land Development Land [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		124
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		11,913
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate [Member] | Multi-family [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Past Due		$ 0

XML

Loans, Leases and Allowance for Credit Losses - Loans by Risk Rating (Detail) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	$ 4,966,577,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,479,907,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,191,331,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,829,321,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	728,405,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,999,527,000
Financing Receivable, Revolving	7,798,186,000
Loans and Leases Receivable, Net of Deferred Income	25,993,254,000	$ 21,101,493,000
Financing Receivable, Not Past Due	25,940,867,000	21,065,187,000
Financing Receivable, Past Due	52,387,000	36,306,000
Loans and Leases Receivable, Collateral for Secured Borrowings	254,780,000
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	21,554,000	15,413,000
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	2,704,000	2,358,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	28,129,000	18,535,000
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	4,898,480,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,311,161,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,040,265,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,671,159,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	689,629,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,893,024,000
Financing Receivable, Revolving	7,716,443,000
Loans and Leases Receivable, Net of Deferred Income	25,220,161,000	20,795,258,000
Financing Receivable, Not Past Due		20,785,118,000
Pass [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		8,263,000
Pass [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		1,481,000
Pass [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		396,000
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	6,929,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	121,939,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	140,967,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	87,861,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,696,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	57,787,000
Financing Receivable, Revolving	47,660,000
Loans and Leases Receivable, Net of Deferred Income	476,839,000	158,981,000
Financing Receivable, Not Past Due		158,907,000
Special Mention [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		58,000
Special Mention [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		16,000
Special Mention [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	61,168,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	46,757,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,099,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	70,124,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	25,080,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	48,716,000
Financing Receivable, Revolving	34,083,000
Loans and Leases Receivable, Net of Deferred Income	296,027,000	146,805,000
Financing Receivable, Not Past Due		120,897,000
Substandard [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		7,092,000
Substandard [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		861,000
Substandard [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		17,955,000
Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	177,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	177,000	449,000
Financing Receivable, Not Past Due		265,000
Doubtful [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Doubtful [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Doubtful [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		184,000
Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	50,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	50,000	0
Financing Receivable, Not Past Due		0
Loss [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Loss [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Loss [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Tech & Innovation [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	560,419,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	326,863,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	135,217,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,459,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,898,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	1,252,033,000
Loans and Leases Receivable, Net of Deferred Income	2,277,889,000
Financing Receivable, Not Past Due	2,277,889,000
Financing Receivable, Past Due	0
Loans and Leases Receivable, Collateral for Secured Borrowings	49,921,000
Tech & Innovation [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Tech & Innovation [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Tech & Innovation [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Tech & Innovation [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	524,508,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	315,900,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	132,566,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,459,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,898,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	1,236,377,000
Loans and Leases Receivable, Net of Deferred Income	2,212,708,000
Tech & Innovation [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	3,499,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,957,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,651,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	15,107,000
Tech & Innovation [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	32,412,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,006,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	15,656,000
Loans and Leases Receivable, Net of Deferred Income	50,074,000
Tech & Innovation [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Tech & Innovation [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Other commercial and industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	2,085,897,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	980,806,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	505,239,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	357,437,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	129,205,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	139,947,000
Financing Receivable, Revolving	1,795,181,000
Loans and Leases Receivable, Net of Deferred Income	5,993,712,000
Financing Receivable, Not Past Due	5,969,739,000
Financing Receivable, Past Due	23,973,000
Loans and Leases Receivable, Collateral for Secured Borrowings	70,407,000
Other commercial and industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	4,617,000
Other commercial and industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	2,490,000
Other commercial and industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	16,866,000
Other commercial and industrial [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	2,067,599,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	920,820,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	469,602,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	289,894,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	113,199,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	123,061,000
Financing Receivable, Revolving	1,735,701,000
Loans and Leases Receivable, Net of Deferred Income	5,719,876,000
Other commercial and industrial [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	129,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	51,516,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	32,172,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	36,017,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,130,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	15,885,000
Financing Receivable, Revolving	43,378,000
Loans and Leases Receivable, Net of Deferred Income	185,227,000
Other commercial and industrial [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	18,169,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,420,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,465,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	31,349,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	9,876,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,001,000
Financing Receivable, Revolving	16,102,000
Loans and Leases Receivable, Net of Deferred Income	88,382,000
Other commercial and industrial [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	177,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	177,000
Other commercial and industrial [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	50,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	50,000
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	176,898,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	346,603,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	331,733,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	451,776,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	176,924,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	409,293,000
Financing Receivable, Revolving	76,936,000
Loans and Leases Receivable, Net of Deferred Income	1,970,163,000	2,316,913,000
Financing Receivable, Not Past Due	1,970,163,000
Financing Receivable, Past Due	0
Loans and Leases Receivable, Collateral for Secured Borrowings	44,213,000
Commercial Real Estate Owner Occupied [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Commercial Real Estate Owner Occupied [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Commercial Real Estate Owner Occupied [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Commercial Real Estate Owner Occupied [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	173,784,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	327,618,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	322,396,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	423,987,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	167,304,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	376,175,000
Financing Receivable, Revolving	74,887,000
Loans and Leases Receivable, Net of Deferred Income	1,866,151,000
Commercial Real Estate Owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	877,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,412,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,411,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	17,306,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,309,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,658,000
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	47,973,000
Commercial Real Estate Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	2,237,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,573,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,926,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	10,483,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,311,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	22,460,000
Financing Receivable, Revolving	2,049,000
Loans and Leases Receivable, Net of Deferred Income	56,039,000
Commercial Real Estate Owner Occupied [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Commercial Real Estate Owner Occupied [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Hotel franchise finance [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	156,816,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	787,180,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	520,640,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	180,587,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,129,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	132,967,000
Financing Receivable, Revolving	162,567,000
Loans and Leases Receivable, Net of Deferred Income	1,942,886,000
Financing Receivable, Not Past Due	1,931,623,000
Financing Receivable, Past Due	11,263,000
Loans and Leases Receivable, Collateral for Secured Borrowings	27,649,000
Hotel franchise finance [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Hotel franchise finance [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Hotel franchise finance [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	11,263,000
Hotel franchise finance [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	156,816,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	754,537,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	464,842,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	140,424,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	96,306,000
Financing Receivable, Revolving	162,567,000
Loans and Leases Receivable, Net of Deferred Income	1,775,492,000
Hotel franchise finance [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	32,643,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	55,798,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	27,389,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23,914,000
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	139,744,000
Hotel franchise finance [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	12,774,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,129,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,747,000
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	27,650,000
Hotel franchise finance [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Hotel franchise finance [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	656,680,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,000,986,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	670,406,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	448,922,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	193,384,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	251,883,000
Financing Receivable, Revolving	211,671,000
Loans and Leases Receivable, Net of Deferred Income	3,433,932,000
Financing Receivable, Not Past Due	3,433,932,000
Financing Receivable, Past Due	0
Loans and Leases Receivable, Collateral for Secured Borrowings	61,403,000
Other Commercial Real Estate Non owner Occupied [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Other Commercial Real Estate Non owner Occupied [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Other Commercial Real Estate Non owner Occupied [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Other Commercial Real Estate Non owner Occupied [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	648,330,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	961,315,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	663,375,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	431,032,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	182,475,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	232,800,000
Financing Receivable, Revolving	211,671,000
Loans and Leases Receivable, Net of Deferred Income	3,330,998,000
Other Commercial Real Estate Non owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	13,217,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,031,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,458,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,257,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,288,000
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	37,251,000
Other Commercial Real Estate Non owner Occupied [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	8,350,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	26,454,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	12,432,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,652,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,795,000
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	65,683,000
Other Commercial Real Estate Non owner Occupied [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Other Commercial Real Estate Non owner Occupied [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	524,852,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,020,433,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	474,268,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	123,104,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	91,153,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	50,604,000
Financing Receivable, Revolving	45,650,000
Loans and Leases Receivable, Net of Deferred Income	2,330,064,000	2,147,664,000
Financing Receivable, Not Past Due	2,319,530,000	2,134,346,000
Financing Receivable, Past Due	10,534,000	13,318,000
Loans and Leases Receivable, Collateral for Secured Borrowings	758,000
Residential Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	10,325,000	7,627,000
Residential Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	209,000	1,721,000
Residential Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0	3,970,000
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	524,852,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,018,264,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	472,941,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	121,970,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	91,138,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	50,087,000
Financing Receivable, Revolving	45,392,000
Loans and Leases Receivable, Net of Deferred Income	2,324,644,000	2,141,336,000
Residential Real Estate [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0	366,000
Residential Real Estate [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,169,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,327,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,134,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	15,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	517,000
Financing Receivable, Revolving	258,000
Loans and Leases Receivable, Net of Deferred Income	5,420,000	5,962,000
Residential Real Estate [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0	0
Residential Real Estate [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0	0
Construction And Land Development Land [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	493,681,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	777,114,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	459,417,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,028,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,403,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	14,953,000
Financing Receivable, Revolving	500,326,000
Loans and Leases Receivable, Net of Deferred Income	2,267,922,000	775,248,000
Financing Receivable, Not Past Due		775,248,000
Financing Receivable, Past Due		0
Construction And Land Development Land [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Construction And Land Development Land [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Construction And Land Development Land [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Construction And Land Development Land [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	492,218,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	777,114,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	422,749,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,028,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,403,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	14,953,000
Financing Receivable, Revolving	496,079,000
Loans and Leases Receivable, Net of Deferred Income	2,225,544,000
Construction And Land Development Land [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	1,463,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	36,476,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	4,247,000
Loans and Leases Receivable, Net of Deferred Income	42,186,000
Construction And Land Development Land [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	192,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	192,000
Construction And Land Development Land [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Construction And Land Development Land [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Warehouse lending [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	155,588,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	48,455,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	990,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,640,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	78,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	3,720,101,000
Loans and Leases Receivable, Net of Deferred Income	3,926,852,000
Financing Receivable, Not Past Due	3,926,852,000
Financing Receivable, Past Due	0
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Warehouse lending [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Warehouse lending [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Warehouse lending [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Warehouse lending [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	155,588,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	48,455,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	990,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,640,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	78,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	3,720,101,000
Loans and Leases Receivable, Net of Deferred Income	3,926,852,000
Warehouse lending [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Warehouse lending [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Warehouse lending [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Warehouse lending [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Municipal and nonprofit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	137,047,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	175,157,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	78,464,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	234,768,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	129,957,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	927,762,000
Financing Receivable, Revolving	3,535,000
Loans and Leases Receivable, Net of Deferred Income	1,686,690,000
Financing Receivable, Not Past Due	1,686,690,000
Financing Receivable, Past Due	0
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Municipal and nonprofit [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Municipal and nonprofit [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Municipal and nonprofit [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Municipal and nonprofit [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	137,047,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	170,963,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	76,133,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	232,816,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	129,957,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	927,762,000
Financing Receivable, Revolving	3,535,000
Loans and Leases Receivable, Net of Deferred Income	1,678,213,000
Municipal and nonprofit [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,194,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,331,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	6,525,000
Municipal and nonprofit [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,952,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	1,952,000
Municipal and nonprofit [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Municipal and nonprofit [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Other, loan segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	18,699,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,310,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	14,957,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,600,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,274,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	72,118,000
Financing Receivable, Revolving	30,186,000
Loans and Leases Receivable, Net of Deferred Income	163,144,000
Financing Receivable, Not Past Due	163,101,000
Financing Receivable, Past Due	43,000
Loans and Leases Receivable, Collateral for Secured Borrowings	429,000
Other, loan segment | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	38,000
Other, loan segment | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	5,000
Other, loan segment | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due	0
Other, loan segment | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	17,738,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,175,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	14,671,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,909,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,177,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	71,880,000
Financing Receivable, Revolving	30,133,000
Loans and Leases Receivable, Net of Deferred Income	159,683,000
Other, loan segment | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	961,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	97,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,691,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	42,000
Financing Receivable, Revolving	35,000
Loans and Leases Receivable, Net of Deferred Income	2,826,000
Other, loan segment | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	135,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	189,000
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	97,000
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	196,000
Financing Receivable, Revolving	18,000
Loans and Leases Receivable, Net of Deferred Income	635,000
Other, loan segment | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	0
Other, loan segment | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans and Leases Receivable, Net of Deferred Income	$ 0
Commercial and industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		9,382,043,000
Financing Receivable, Not Past Due		9,376,377,000
Financing Receivable, Past Due		5,666,000
Commercial and industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		2,501,000
Commercial and industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		637,000
Commercial and industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		2,528,000
Commercial and industrial [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		9,265,823,000
Commercial and industrial [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		65,893,000
Commercial and industrial [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		49,878,000
Commercial and industrial [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		449,000
Commercial and industrial [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,245,634,000
Construction And Land Development Construction [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,176,908,000
Financing Receivable, Not Past Due		1,176,908,000
Financing Receivable, Past Due		0
Construction And Land Development Construction [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Construction And Land Development Construction [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Construction And Land Development Construction [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Construction And Land Development Construction [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,157,169,000
Construction And Land Development Construction [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		17,592,000
Construction And Land Development Construction [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		2,147,000
Construction And Land Development Construction [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Construction And Land Development Construction [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Land [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		775,248,000
Land [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		773,868,000
Land [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,380,000
Land [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Land [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Land [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		57,083,000
Financing Receivable, Not Past Due		57,083,000
Financing Receivable, Past Due		0
Consumer Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Consumer Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Consumer Loan [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		57,073,000
Consumer Loan [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		10,000
Consumer Loan [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Consumer Loan [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Consumer Loan [Member] | Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		2,316,913,000
Financing Receivable, Not Past Due		2,316,165,000
Financing Receivable, Past Due		748,000
Commercial Real Estate [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		5,024,218,000
Financing Receivable, Not Past Due		5,007,644,000
Financing Receivable, Past Due		16,574,000
Commercial Real Estate [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		221,416,000
Financing Receivable, Not Past Due		221,416,000
Financing Receivable, Past Due		0
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		624,000
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		4,661,000
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		124,000
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		11,913,000
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Past Due		0
Commercial Real Estate [Member] | Pass [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		2,265,566,000
Commercial Real Estate [Member] | Pass [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		4,913,007,000
Commercial Real Estate [Member] | Pass [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		221,416,000
Commercial Real Estate [Member] | Special Mention [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		9,579,000
Commercial Real Estate [Member] | Special Mention [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		64,161,000
Commercial Real Estate [Member] | Special Mention [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate [Member] | Substandard [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		41,768,000
Commercial Real Estate [Member] | Substandard [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		47,050,000
Commercial Real Estate [Member] | Substandard [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate [Member] | Doubtful [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate [Member] | Doubtful [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate [Member] | Doubtful [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate [Member] | Loss [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate [Member] | Loss [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		0
Commercial Real Estate [Member] | Loss [Member] | Multi-family [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income		$ 0

XML

Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Troubled Debt Restructurings (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) SecurityLoan	Sep. 30, 2019 USD ($) SecurityLoan	Sep. 30, 2020 USD ($) SecurityLoan	Sep. 30, 2019 USD ($) SecurityLoan	Dec. 31, 2019 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 254,780,000		$ 254,780,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | SecurityLoan	1	0	2	2
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	$ 4,200,000		$ 4,200,000		$ 200,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	800,000		1,500,000	$ 400,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 25,000,000.0		$ 35,700,000
Financing Receivable, Modifications, Number of Contracts | SecurityLoan	20	3	22	7
Financing Receivable, Troubled Debt Restructuring	$ 60,757,000		$ 60,757,000
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 11,800,000		$ 40,700,000
Reserves allocated to customers whose loan terms modified in troubled debt restructurings	$ 2,700,000		$ 2,700,000
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan	27		27
Tech & Innovation [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 49,921,000		$ 49,921,000
Financing Receivable, Troubled Debt Restructuring	$ 12,111,000		$ 12,111,000
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan	3		3
Other commercial and industrial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 70,407,000		$ 70,407,000
Financing Receivable, Troubled Debt Restructuring	$ 30,270,000		$ 30,270,000
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan	16		16
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 44,213,000		$ 44,213,000
Financing Receivable, Troubled Debt Restructuring	$ 2,335,000		$ 2,335,000
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan	3		3
Hotel franchise finance [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 27,649,000		$ 27,649,000
Financing Receivable, Troubled Debt Restructuring	$ 5,746,000		$ 5,746,000
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan	2		2
Other Commercial Real Estate Non owner Occupied [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 61,403,000		$ 61,403,000
Financing Receivable, Troubled Debt Restructuring	$ 10,295,000		$ 10,295,000
Financing Receivable, Troubled Debt Restructured Loans, Number of Outstanding Contracts | SecurityLoan	3		3
Residential Real Estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 758,000		$ 758,000
Construction And Land Development [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0		0
Warehouse lending [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0		0
Municipal and nonprofit [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 0		$ 0

XML

Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Collateral Dependent Loans (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 254,780
Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	134,023
Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	120,757
Tech & Innovation [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	49,921
Tech & Innovation [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Tech & Innovation [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	49,921
Other commercial and industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	70,407
Other commercial and industrial [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Other commercial and industrial [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	70,407
Commercial Real Estate Owner Occupied [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	44,213
Commercial Real Estate Owner Occupied [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	44,213
Commercial Real Estate Owner Occupied [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Hotel franchise finance [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	27,649
Hotel franchise finance [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	27,649
Hotel franchise finance [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Other Commercial Real Estate Non owner Occupied [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	61,403
Other Commercial Real Estate Non owner Occupied [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	61,403
Other Commercial Real Estate Non owner Occupied [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Residential Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	758
Residential Real Estate [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	758
Residential Real Estate [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Construction And Land Development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Construction And Land Development [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Construction And Land Development [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Warehouse lending [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Warehouse lending [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Warehouse lending [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Municipal and nonprofit [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Municipal and nonprofit [Member] | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Municipal and nonprofit [Member] | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Other, loan segment
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	429
Other, loan segment | Real Estate Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Other, loan segment | Other Collateral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 429

XML

Loans, Leases and Allowance for Credit Losses - Allowances for Credit Losses (Detail) Valuation - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 310,560	$ 165,021	$ 310,560	$ 165,021	$ 310,550	$ 186,925		$ 160,409	$ 152,717
Provision for Loan and Lease Losses	(8,204)	(4,000)	(134,130)	(14,500)
Financing Receivable, Allowance for Credit Loss, Writeoff	8,773	2,099	14,593	6,968
Financing Receivable, Allowance for Credit Loss, Recovery	(579)	(2,711)	(4,098)	(4,772)
Financing Receivable, Collectively Evaluated for Impairment	25,654,269		25,654,269				$ 20,932,161
Financing Receivable, Individually Evaluated for Impairment	338,985		338,985				116,303
Loans and Leases Receivable, Net of Deferred Income	25,993,254		25,993,254				21,101,493
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	300,514		300,514				164,923
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	10,046		10,046				2,776
Impaired Financing Receivable, with Related Allowance, Recorded Investment							20,979
Impaired Financing Receivable, with No Related Allowance, Recorded Investment							95,324
Off-Balance Sheet, Credit Loss, Liability	44,400		44,400				8,955
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance							24,055
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance							99,440
Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment							123,495
Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment							20,921,137
Financing Receivable Unpaid Principal Balance							21,108,472
Impaired Financing Receivable, Related Allowance							2,776
Impaired Financing Receivable With No Related Allowance							0
Loans and Leases Receivable, Allowance	310,560		310,560				167,797
Interest Receivable	120,100		120,100
Financial Asset Acquired with Credit Deterioration [Member]
Valuation Allowance [Line Items]
Impaired Financing Receivable, Recorded Investment							53,029
Impaired Financing Receivable, Unpaid Principal Balance							63,840
Impaired Financing Receivable, Related Allowance							98
Commercial and industrial [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss		77,419		77,419				79,635	83,118
Provision for Loan and Lease Losses		(2,815)		(3,128)
Financing Receivable, Allowance for Credit Loss, Writeoff		1,950		6,092
Financing Receivable, Allowance for Credit Loss, Recovery		(2,549)		(3,521)
Financing Receivable, Collectively Evaluated for Impairment							9,333,059
Financing Receivable, Individually Evaluated for Impairment							48,984
Loans and Leases Receivable, Net of Deferred Income							9,382,043
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment							81,252
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment							1,050
Impaired Financing Receivable, with Related Allowance, Recorded Investment							6,919
Impaired Financing Receivable, with No Related Allowance, Recorded Investment							42,065
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance							9,844
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance							43,848
Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment							53,692
Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment							9,312,100
Financing Receivable Unpaid Principal Balance							9,365,792
Impaired Financing Receivable, Related Allowance							1,050
Impaired Financing Receivable With No Related Allowance							0
Loans and Leases Receivable, Allowance							82,302
Commercial and industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Valuation Allowance [Line Items]
Impaired Financing Receivable, Recorded Investment							0
Impaired Financing Receivable, Unpaid Principal Balance							0
Impaired Financing Receivable, Related Allowance							0
Tech & Innovation [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	38,836		38,836		54,559	22,394
Provision for Loan and Lease Losses	(9,359)		(25,556)
Financing Receivable, Allowance for Credit Loss, Writeoff	6,364		9,114
Financing Receivable, Allowance for Credit Loss, Recovery	0		0
Financing Receivable, Collectively Evaluated for Impairment	2,227,995		2,227,995
Financing Receivable, Individually Evaluated for Impairment	49,894		49,894
Loans and Leases Receivable, Net of Deferred Income	2,277,889		2,277,889
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	38,836		38,836
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Other commercial and industrial [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	108,753		108,753		109,930	95,784
Provision for Loan and Lease Losses	(621)		(13,653)
Financing Receivable, Allowance for Credit Loss, Writeoff	748		2,684
Financing Receivable, Allowance for Credit Loss, Recovery	(192)		(2,000)
Financing Receivable, Collectively Evaluated for Impairment	5,906,731		5,906,731
Financing Receivable, Individually Evaluated for Impairment	86,981		86,981
Loans and Leases Receivable, Net of Deferred Income	5,993,712		5,993,712
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	102,011		102,011
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	6,742		6,742
Commercial Real Estate Owner Occupied [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	19,406		19,406		15,587	10,420
Provision for Loan and Lease Losses	(3,897)		(9,100)
Financing Receivable, Allowance for Credit Loss, Writeoff	83		126
Financing Receivable, Allowance for Credit Loss, Recovery	(5)		(12)
Financing Receivable, Collectively Evaluated for Impairment	1,912,127		1,912,127				2,296,342
Financing Receivable, Individually Evaluated for Impairment	58,036		58,036				17,736
Loans and Leases Receivable, Net of Deferred Income	1,970,163		1,970,163				2,316,913
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	19,406		19,406				13,842
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0				0
Impaired Financing Receivable, with Related Allowance, Recorded Investment							0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment							17,736
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance							0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance							18,681
Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment							18,681
Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment							2,297,168
Financing Receivable Unpaid Principal Balance							2,319,426
Impaired Financing Receivable, Related Allowance							0
Impaired Financing Receivable With No Related Allowance							0
Loans and Leases Receivable, Allowance							13,842
Commercial Real Estate Owner Occupied [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Valuation Allowance [Line Items]
Impaired Financing Receivable, Recorded Investment							2,835
Impaired Financing Receivable, Unpaid Principal Balance							3,577
Impaired Financing Receivable, Related Allowance							0
Commercial Real Estate Non Owner Occupied [Member]
Valuation Allowance [Line Items]
Financing Receivable, Collectively Evaluated for Impairment							5,159,921
Financing Receivable, Individually Evaluated for Impairment							35,538
Loans and Leases Receivable, Net of Deferred Income							5,245,634
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment							32,114
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment							1,219
Impaired Financing Receivable, with Related Allowance, Recorded Investment							11,913
Impaired Financing Receivable, with No Related Allowance, Recorded Investment							23,625
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance							11,949
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance							24,738
Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment							36,687
Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment							5,177,477
Financing Receivable Unpaid Principal Balance							5,274,355
Impaired Financing Receivable, Related Allowance							1,219
Impaired Financing Receivable With No Related Allowance							0
Loans and Leases Receivable, Allowance							33,431
Commercial Real Estate Non Owner Occupied [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Valuation Allowance [Line Items]
Impaired Financing Receivable, Recorded Investment							50,175
Impaired Financing Receivable, Unpaid Principal Balance							60,191
Impaired Financing Receivable, Related Allowance							98
Hotel franchise finance [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	38,027		38,027		35,864	14,104
Provision for Loan and Lease Losses	(2,163)		(23,923)
Financing Receivable, Allowance for Credit Loss, Writeoff	0		0
Financing Receivable, Allowance for Credit Loss, Recovery	0		0
Financing Receivable, Collectively Evaluated for Impairment	1,885,451		1,885,451
Financing Receivable, Individually Evaluated for Impairment	57,435		57,435
Loans and Leases Receivable, Net of Deferred Income	1,942,886		1,942,886
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	35,312		35,312
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	2,715		2,715
Other Commercial Real Estate Non owner Occupied [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	40,622		40,622		32,672	10,503
Provision for Loan and Lease Losses	(9,196)		(30,684)
Financing Receivable, Allowance for Credit Loss, Writeoff	1,246		2,131
Financing Receivable, Allowance for Credit Loss, Recovery	0		(1,566)
Financing Receivable, Collectively Evaluated for Impairment	3,355,259		3,355,259
Financing Receivable, Individually Evaluated for Impairment	78,673		78,673
Loans and Leases Receivable, Net of Deferred Income	3,433,932		3,433,932
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	40,518		40,518
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	104		104
Residential Real Estate [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	1,789	13,532	1,789	13,532	1,725	3,814		12,606	11,276
Provision for Loan and Lease Losses	(16)	(804)	(2,103)	(2,599)
Financing Receivable, Allowance for Credit Loss, Writeoff	307	9	307	594
Financing Receivable, Allowance for Credit Loss, Recovery	(355)	(131)	(385)	(251)
Financing Receivable, Collectively Evaluated for Impairment	2,324,676		2,324,676				2,142,045
Financing Receivable, Individually Evaluated for Impairment	5,388		5,388				5,600
Loans and Leases Receivable, Net of Deferred Income	2,330,064		2,330,064				2,147,664
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,789		1,789				13,714
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0				0
Impaired Financing Receivable, with Related Allowance, Recorded Investment							0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment							5,600
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance							0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance							5,708
Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment							5,708
Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment							2,113,893
Financing Receivable Unpaid Principal Balance							2,119,673
Impaired Financing Receivable, Related Allowance							0
Impaired Financing Receivable With No Related Allowance							0
Loans and Leases Receivable, Allowance							13,714
Residential Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Valuation Allowance [Line Items]
Impaired Financing Receivable, Recorded Investment							19
Impaired Financing Receivable, Unpaid Principal Balance							72
Impaired Financing Receivable, Related Allowance							0
Construction And Land Development [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	38,781	27,318	38,781	27,318	35,792	6,218		26,091	22,513
Provision for Loan and Lease Losses	(2,983)	(1,210)	(32,540)	(4,865)
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0	0	141
Financing Receivable, Allowance for Credit Loss, Recovery	(6)	(17)	(23)	(81)
Financing Receivable, Collectively Evaluated for Impairment	2,267,922		2,267,922				1,943,735
Financing Receivable, Individually Evaluated for Impairment	0		0				8,421
Loans and Leases Receivable, Net of Deferred Income	2,267,922		2,267,922				1,952,156
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	38,781		38,781				23,387
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0				507
Impaired Financing Receivable, with Related Allowance, Recorded Investment							2,147
Impaired Financing Receivable, with No Related Allowance, Recorded Investment							6,274
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance							2,262
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance							6,413
Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment							8,675
Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment							1,963,116
Financing Receivable Unpaid Principal Balance							1,971,791
Impaired Financing Receivable, Related Allowance							507
Impaired Financing Receivable With No Related Allowance							0
Loans and Leases Receivable, Allowance							23,894
Construction And Land Development [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Valuation Allowance [Line Items]
Impaired Financing Receivable, Recorded Investment							0
Impaired Financing Receivable, Unpaid Principal Balance							0
Impaired Financing Receivable, Related Allowance							0
Warehouse lending [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	838		838		743	246
Provision for Loan and Lease Losses	(95)		(592)
Financing Receivable, Allowance for Credit Loss, Writeoff	0		0
Financing Receivable, Allowance for Credit Loss, Recovery	0		0
Financing Receivable, Collectively Evaluated for Impairment	3,926,852		3,926,852
Financing Receivable, Individually Evaluated for Impairment	0		0
Loans and Leases Receivable, Net of Deferred Income	3,926,852		3,926,852
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	838		838
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Municipal and nonprofit [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	17,896		17,896		17,128	17,397
Provision for Loan and Lease Losses	(768)		(499)
Financing Receivable, Allowance for Credit Loss, Writeoff	0		0
Financing Receivable, Allowance for Credit Loss, Recovery	0		0
Financing Receivable, Collectively Evaluated for Impairment	1,684,738		1,684,738
Financing Receivable, Individually Evaluated for Impairment	1,952		1,952
Loans and Leases Receivable, Net of Deferred Income	1,686,690		1,686,690
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	17,454		17,454
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	442		442
Other, loan segment
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss	5,612		5,612		$ 6,550	$ 6,045
Provision for Loan and Lease Losses	(934)		(314)
Financing Receivable, Allowance for Credit Loss, Writeoff	25		231
Financing Receivable, Allowance for Credit Loss, Recovery	(21)		(112)
Financing Receivable, Collectively Evaluated for Impairment	162,518		162,518
Financing Receivable, Individually Evaluated for Impairment	626		626
Loans and Leases Receivable, Net of Deferred Income	163,144		163,144
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	5,569		5,569
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 43		$ 43
Commercial Real Estate [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss		45,944		45,944				41,258	34,829
Provision for Loan and Lease Losses		(4,817)		(10,354)
Financing Receivable, Allowance for Credit Loss, Writeoff		139		139
Financing Receivable, Allowance for Credit Loss, Recovery		(8)		(900)
Commercial Real Estate [Member] | Commercial Real Estate Owner Occupied [Member]
Valuation Allowance [Line Items]
Loans and Leases Receivable, Net of Deferred Income							2,316,913
Commercial Real Estate [Member] | Commercial Real Estate Non Owner Occupied [Member]
Valuation Allowance [Line Items]
Loans and Leases Receivable, Net of Deferred Income							5,024,218
Consumer Loan [Member]
Valuation Allowance [Line Items]
Financing Receivable, Allowance for Credit Loss		808		808				$ 819	$ 981
Provision for Loan and Lease Losses		(16)		(190)
Financing Receivable, Allowance for Credit Loss, Writeoff		1		2
Financing Receivable, Allowance for Credit Loss, Recovery		$ (6)		$ (19)
Financing Receivable, Collectively Evaluated for Impairment							57,059
Financing Receivable, Individually Evaluated for Impairment							24
Loans and Leases Receivable, Net of Deferred Income							57,083
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment							614
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment							0
Impaired Financing Receivable, with Related Allowance, Recorded Investment							0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment							24
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance							0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance							52
Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment							52
Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment							57,383
Financing Receivable Unpaid Principal Balance							57,435
Impaired Financing Receivable, Related Allowance							0
Impaired Financing Receivable With No Related Allowance							0
Loans and Leases Receivable, Allowance							614
Consumer Loan [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Valuation Allowance [Line Items]
Impaired Financing Receivable, Recorded Investment							0
Impaired Financing Receivable, Unpaid Principal Balance							0
Impaired Financing Receivable, Related Allowance							$ 0

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Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Loan Purchases and Sales (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Purchase	$ 514,396	$ 709,071	$ 1,683,720	$ 1,830,177
Loans and Leases Receivable, Gain (Loss) on Sales, Net		100		(500)
Loans And Loans Receivable Purchases			0
Financing Receivable, Sale		14,238		49,068
Commercial and industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Purchase	271,085	260,621	663,171	787,286
Financing Receivable, Sale		14,238		49,068
Commercial Real Estate Non Owner Occupied [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Purchase		19,177		49,211
Financing Receivable, Sale		0		0
Residential Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Purchase	243,311	428,665	919,509	959,190
Financing Receivable, Sale		0		0
Construction And Land Development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Purchase		608		34,490
Financing Receivable, Sale		$ 0		$ 0
Warehouse lending [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Purchase	0		99,446
Municipal and nonprofit [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Purchase	$ 0		$ 1,594

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Other Borrowings - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt [Line Items]
FHLB advances	$ 10,000	$ 0
Short-term Debt	10,000	0
Customer repurchase agreements	19,688	16,675
Federal Funds Purchased	0	0
Federal Home Loan Bank Advances [Member]
Debt [Line Items]
Additional available credit with the entity	4,400,000	4,500,000
FRB [Member]
Debt [Line Items]
Additional available credit with the entity	2,400,000	$ 1,100,000
Unsecured Credit Facility [Member]
Debt [Line Items]
Secured borrowing credit line	$ 2,400,000

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Qualifying Debt (Details)		3 Months Ended	9 Months Ended
	Oct. 15, 2020 USD ($)	Sep. 30, 2020 USD ($) $ / shares	Sep. 30, 2020 USD ($) Trust	Dec. 31, 2019 USD ($)	Jun. 16, 2016 USD ($)	Jun. 29, 2015 USD ($)
Debt Instrument [Line Items]
Common Stock, Dividends, Per Share, Cash Paid | $ / shares		$ 0.25
Subordinated Debt		$ 545,300,000	$ 545,300,000	$ 319,200,000
Number of Statutory Business Trusts Formed or Acquired | Trust			8
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust		73,500,000	$ 73,500,000	$ 74,400,000
Subsequent Event [Member]
Debt Instrument [Line Items]
Early Repayment of Subordinated Debt	$ 75,000,000
Subordinated Debt [Member] | Subordinated Debentures Maturing July 2056 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 175,000,000.0	$ 175,000,000.0
Debt Issuance Cost					$ 5,500,000
Debt Instrument, Interest Rate, Stated Percentage		6.25%	6.25%
Subordinated Debt [Member] | Subordinated Debentures Maturing July 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 150,000,000.0	$ 150,000,000.0
Debt Issuance Cost						$ 1,800,000
Debt Instrument, Interest Rate, Stated Percentage		5.00%	5.00%
Subordinated Debt [Member] | Subordinated Debentures Maturing June 2030 [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 225,000,000.0	$ 225,000,000.0
Debt Issuance Cost		$ 3,100,000	$ 3,100,000
Debt Instrument, Interest Rate, Stated Percentage		5.25%	5.25%
Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time		2.57%	2.57%	4.25%

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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchased and Retired During Period, Shares		1,000,000	2,066,479	2,733,603
Weighted Average Selling Price Per Share		$ 43.63	$ 34.65	$ 42.25
Stock Repurchased and Retired During Period, Value		$ 43,658	$ 71,669	$ 115,571
Dividends, Common Stock, Cash	$ 25,208		$ 76,028	$ 25,684
Common Stock, Dividends, Per Share, Cash Paid	$ 0.25
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	14,398	33,031	164,564	209,183
Treasury Stock Acquired, Average Cost Per Share	$ 35.73	$ 46.33	$ 50.86	$ 45.78
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			136,334
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 1,800	$ 1,600	$ 5,300	$ 4,500
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture	0		22,300
Share-based Payment Arrangement, Expense	4,500	4,000	15,300	13,700
Executive Officer [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	300	500	900	1,500
Retained Earnings [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchased and Retired During Period, Value		33,733	59,335	46,200
Dividends, Common Stock, Cash	$ 25,208	$ 25,684	$ 76,028	$ 25,684

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Stockholders' Equity Common Stock Repurchase (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchase Program, Authorized Amount		$ 250,000
Stock Repurchased and Retired During Period, Shares	1,000,000	2,066,479	2,733,603
Weighted Average Selling Price Per Share	$ 43.63	$ 34.65	$ 42.25
Stock Repurchased and Retired During Period, Value	$ (43,658)	$ (71,669)	$ (115,571)
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchased and Retired During Period, Shares	1,000,000	2,066,000	2,734,000

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Accumulated Other Comprehensive Income - Summary of Changes in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 73,677	$ 26,381	$ 25,008	$ 33,622
Other comprehensive income before reclassifications	(4,908)	(11,594)	(53,751)	(71,597)
Amounts reclassified from accumulated other comprehensive income	0	(2,376)	(174)	(2,376)
Net other comprehensive income	(4,908)	(9,218)	(53,577)	(69,221)
Ending balance	78,585	35,599	78,585	35,599
Unrealized holding gains (losses) on AFS
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	66,809	19,709	21,399	47,591
Other comprehensive income before reclassifications	(7,592)	(11,014)	(53,176)	(78,314)
Amounts reclassified from accumulated other comprehensive income	0	(2,232)	(174)	(2,232)
Net other comprehensive income	(7,592)	(8,782)	(53,002)	(76,082)
Ending balance	74,401	28,491	74,401	28,491
Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	7,181	6,171	3,629	13,433
Other comprehensive income before reclassifications	(2,681)	(598)	(871)	(6,664)
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Net other comprehensive income	(2,681)	(598)	(871)	(6,664)
Ending balance	4,500	6,769	4,500	6,769
Impairment loss on securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	0	144	0	144
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	0	(144)	0	(144)
Net other comprehensive income	0	(144)	0	(144)
Ending balance	0	0	0	0
Supplemental Employee Retirement Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	313	357	20	392
Other comprehensive income before reclassifications	(3)	(18)	(296)	(53)
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Net other comprehensive income	(3)	(18)	(296)	(53)
Ending balance	$ 316	$ 339	$ 316	$ 339

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Accumulated Other Comprehensive Income - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Realized gains on sales of investment securities	$ 0	$ 3,152	$ 230	$ 3,152
Amount reclassified from accumulated other comprehensive income	0	(776)	(56)	(776)
Amount reclassified from accumulated other comprehensive income	$ 0	$ 2,376	$ 174	$ 2,376

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Derivatives and Hedging Fair Value of Derivative Contracts (Detail) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value		$ 702	$ 125	$ 315
Derivative Liability, Fair Value		643	99	251
Derivative, Notional Amount		42,439	9,643	18,261
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value		242	81	124
Derivative Liability, Fair Value		242	81	124
Derivative, Notional Amount		3,517	2,932	2,932
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value		460	44	191
Derivative Liability, Fair Value		401	18	127
Derivative, Notional Amount		38,922	6,711	15,329
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value		3,417	1,778	0
Derivative Liability, Fair Value		92,352	55,471	63,970
Notional Amount, Netting Adjustments	[1]	0	0	0
Derivative Netting Adjustments	[1]	0	21	0
Derivative, Notional Amount		692,348	862,952	865,321
Positive NPVs		3,417	1,757	0
Negative NPVs		92,352	55,450	63,970
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value		3,417	1,778	0
Derivative Liability, Fair Value		92,352	55,471	63,970
Derivative, Notional Amount		$ 692,348	$ 862,952	$ 865,321

[1] Netting adjustments represent the amounts recorded to convert the Company's derivative balances from a gross basis to a net basis in accordance with the applicable accounting guidance.

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Derivatives and Hedging Largest Exposure to Individual Counterparty (Detail) - Individual Counterparty - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Largest gross exposure (positive derivative NPV) to an individual counterparty	$ 3,417	$ 1,757	$ 0
Collateral posted by this counterparty	0	1,610	0
Negative derivative NPV with this counterparty	0	0	0
Collateral pledged to this counterparty	0	0	0
Net exposure after netting adjustments and collateral	$ 3,417	$ 147	$ 0

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Derivatives and Hedging Additional Information (Detail) - USD ($)		Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Derivative [Line Items]
Hedged Asset, Fair Value Hedge		$ 596,505,000	$ 578,063,000
Fair Value Hedge Assets, Loans	[1]	92,352,000	53,292,000
Hedged Liability, Fair Value Hedge		(323,386,000)	(319,197,000)
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	[1]	(3,417,000)	401,000
Derivative, Collateral, Right to Reclaim Securities		14,600,000	29,200,000	$ 31,000,000.0
Subordinated Debentures Maturing July 2025 [Member] | Subordinated Debt [Member]
Derivative [Line Items]
Debt Instrument, Face Amount		150,000,000.0
Subordinated Debentures Maturing July 2056 [Member] | Subordinated Debt [Member]
Derivative [Line Items]
Debt Instrument, Face Amount		175,000,000.0
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability, Fair Value		92,352,000	55,471,000	63,970,000
Negative NPVs		$ 92,352,000	$ 55,450,000	$ 63,970,000

[1] Included in the carrying value of the hedged assets/(liabilities).

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Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Basic	99,850	102,041	100,322	103,024
Weighted Average Number Diluted Shares Outstanding Adjustment	209	410	252	444
Diluted	100,059	102,451	100,574	103,468
Net income available to common shareholders	$ 135,769	$ 127,375	$ 313,005	$ 371,107
Earnings (loss) per share - basic	$ 1.36	$ 1.25	$ 3.12	$ 3.60
Earnings (loss) per share - diluted	$ 1.36	$ 1.24	$ 3.11	$ 3.59
Anti-dilutive stock options outstanding that were not included in computation of diluted earnings per common share			0

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Income Taxes Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Percent	18.50%	18.30%	18.05%	17.52%
Deferred Income Tax Assets, Net	$ 46,645		$ 46,645		$ 18,025
Increase (Decrease) in Deferred Income Taxes			28,600
Operating Loss Carryforwards, Valuation Allowance	0		0
Investments in LIHTC and renewable energy	414,305		414,305		409,365
Investment-related Liabilities	161,500		161,500		$ 191,000
Amortization of tax credit investments	14,500	$ 13,000	34,244	$ 33,551
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	44,600		44,600
Deferred Tax Assets, Operating Loss Carryforwards	5,200		5,200
ARIZONA
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	700		700
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 100		$ 100

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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019	Jan. 01, 2020
Loss Contingencies [Line Items]
Letters of credit expiration period	1 year
Off-Balance Sheet, Credit Loss, Liability	$ 44,400	$ 8,955
Percentage of first liens initial loan to value ratio	75.00%
Percentage Of Commercial Real Estate Loans Occupied By Owners	29.00%	31.00%
Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Credit Concentration Risk [Member]
Loss Contingencies [Line Items]
Percent of commercial real estate related loans	38.00%	45.00%
Unfunded Loan Commitment [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 44,400	$ 9,000
Cumulative Effect, Period of Adoption, Adjustment [Member]
Loss Contingencies [Line Items]
Off-Balance Sheet, Credit Loss, Liability			$ 15,089

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Commitments and Contingencies - Summary of Contractual Amounts for Unfunded Commitments and Letters of Credit (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Total amount	$ 8,819,069	$ 8,827,108
Percentage Of Commercial Real Estate Loans Occupied By Owners	29.00%	31.00%
Commitments to extend credit [Member]
Other Commitments [Line Items]
Unsecured Loan Commitments	$ 1,046,504	$ 895,175
Total amount	8,379,196	8,348,421
Credit card guarantees [Member]
Other Commitments [Line Items]
Total amount	283,703	302,909
Standby letters of credit [Member]
Other Commitments [Line Items]
Total amount	156,170	175,778
Unsecured Letters Of Credit	$ 9,513	$ 5,850
Commercial Real Estate Portfolio Segment [Member] | Credit Concentration Risk [Member] | Loans Receivable [Member]
Other Commitments [Line Items]
Concentration Risk, Percentage	38.00%	45.00%

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Commitments and Contingencies Lease Commitments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Lease, Cost	$ 3.9	$ 3.2	$ 10.9	$ 9.5
Lessee, operating lease, other cost	1.0	1.0	2.9	3.0
Other Commitments [Line Items]
Lease, Cost	3.9	3.2	10.9	9.5
Lessee, operating lease, other cost	$ 1.0	$ 1.0	$ 2.9	$ 3.0

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Fair Value Accounting - Gains and Losses from Fair Value Changes Included in Consolidated Statement of Operations (Detail) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2020 USD ($)		Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)		Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Subordinated Debt Obligations, Fair Value Disclosure		$ 60,529	[1]		$ 60,529	[1]		$ 61,685	[2]
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax		$ (2,681)		$ (598)	$ (871)		$ (6,664)
Junior Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Measurement Input		0.0365			0.0365			0.0509
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)		$ (3,555)		794	$ 1,156		(8,837)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	[3]	$ (3,555)		$ 794	$ 1,156		$ (8,837)
Period of basis point spread					3.42%		3.18%
Percentage of LIBOR					0.23%		1.91%

[1] Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

[2] Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

[3] Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded as part of OCI, net of tax, and totaled $(2.7) million and $0.6 million for three months ended September 30, 2020 and 2019, respectively, and $0.9 million and $(6.7) million for the nine months ended September 30, 2020 and 2019, respectively.

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Fair Value Accounting - Fair Value of Assets and Liabilities (Detail) - USD ($)		3 Months Ended			9 Months Ended
		Sep. 30, 2020		Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		$ 3,975,225,000	[1]		$ 3,975,225,000	[1]		$ 3,346,310,000	[2]
Investment securities - equity		160,561,000	[1]		160,561,000	[1]		138,701,000	[2]
Subordinated Debt Obligations, Fair Value Disclosure		60,529,000	[3]		60,529,000	[3]		61,685,000	[4]
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		3,975,225,000			3,975,225,000			3,346,310,000
Investment securities - equity		160,561,000			160,561,000			138,701,000
Derivative Liability		92,995,000	[5]		92,995,000	[5]		55,570,000	[6]
Loans Held-for-sale, Fair Value Disclosure		20,764,000			20,764,000			21,803,000
Fair Value, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		25,208,000			25,208,000			32,167,000
Investment securities - equity		134,811,000			134,811,000			138,701,000
Subordinated Debt Obligations, Fair Value Disclosure		0	[3]		0	[3]		0	[4]
Derivative Liability		0	[5]		0	[5]		0	[6]
Loans Held-for-sale, Fair Value Disclosure		0			0			0
Fair Value, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		3,950,017,000			3,950,017,000			3,314,143,000
Investment securities - equity		25,750,000			25,750,000			0
Subordinated Debt Obligations, Fair Value Disclosure		0	[3]		0	[3]		0	[4]
Derivative Liability		92,995,000	[5]		92,995,000	[5]		55,570,000	[6]
Loans Held-for-sale, Fair Value Disclosure		20,764,000			20,764,000			21,803,000
Fair Value, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Investment securities - equity		0			0			0
Subordinated Debt Obligations, Fair Value Disclosure		60,529,000	[3]		60,529,000	[3]		61,685,000	[4]
Derivative Liability		0	[5]		0	[5]		0	[6]
Loans Held-for-sale, Fair Value Disclosure		0			0			0
Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		1,361,556,000			1,361,556,000			1,412,060,000
Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		1,361,556,000			1,361,556,000			1,412,060,000
Fair Value, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Nontaxable Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		1,011,023,000			1,011,023,000			554,855,000
Fair Value, Recurring [Member] | Nontaxable Municipal Bonds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Nontaxable Municipal Bonds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		1,011,023,000			1,011,023,000			554,855,000
Fair Value, Recurring [Member] | Nontaxable Municipal Bonds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Residential Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		1,264,237,000			1,264,237,000			1,129,227,000
Fair Value, Recurring [Member] | Residential Mortgage Backed Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Residential Mortgage Backed Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		1,264,237,000			1,264,237,000			1,129,227,000
Fair Value, Recurring [Member] | Residential Mortgage Backed Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		95,657,000			95,657,000			94,253,000
Fair Value, Recurring [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		95,657,000			95,657,000			94,253,000
Fair Value, Recurring [Member] | Commercial Mortgage Backed Securities Issued By US Government Sponsored Enterprise [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		186,609,000			186,609,000			99,961,000
Fair Value, Recurring [Member] | Corporate Bond Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			5,127,000
Fair Value, Recurring [Member] | Corporate Bond Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		186,609,000			186,609,000			94,834,000
Fair Value, Recurring [Member] | Corporate Bond Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Taxable Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		22,159,000			22,159,000			7,773,000
Fair Value, Recurring [Member] | Taxable Municipal Bonds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Taxable Municipal Bonds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		22,159,000			22,159,000			7,773,000
Fair Value, Recurring [Member] | Taxable Municipal Bonds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		107,016,000			107,016,000			86,197,000
Fair Value, Recurring [Member] | Preferred Stock [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		107,016,000			107,016,000			86,197,000
Fair Value, Recurring [Member] | Preferred Stock [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		0			0			0
Fair Value, Recurring [Member] | Preferred Stock [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		0			0			0
Fair Value, Recurring [Member] | CRA investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		53,545,000			53,545,000			52,504,000
Fair Value, Recurring [Member] | CRA investments [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		27,795,000			27,795,000			52,504,000
Fair Value, Recurring [Member] | CRA investments [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		25,750,000			25,750,000			0
Fair Value, Recurring [Member] | CRA investments [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - equity		0			0			0
Fair Value, Recurring [Member] | Collateralized Debt Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		8,176,000			8,176,000			10,142,000
Fair Value, Recurring [Member] | Collateralized Debt Obligations [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Collateralized Debt Obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		8,176,000			8,176,000			10,142,000
Fair Value, Recurring [Member] | Collateralized Debt Obligations [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		25,208,000			25,208,000			27,040,000
Fair Value, Recurring [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		25,208,000			25,208,000			27,040,000
Fair Value, Recurring [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale								10,000,000
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale								0
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale								10,000,000
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale								0
Fair Value, Recurring [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		600,000			600,000			999,000
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		600,000			600,000			999,000
Fair Value, Recurring [Member] | US Treasury Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Reported Value Measurement [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		3,975,225,000			3,975,225,000			3,346,310,000
Investment securities - equity		160,561,000			160,561,000			138,701,000
Derivative Liability		92,995,000			92,995,000			55,570,000
Estimate of Fair Value Measurement [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		3,975,225,000			3,975,225,000			3,346,310,000
Investment securities - equity		160,561,000			160,561,000			138,701,000
Derivative Liability		92,995,000			92,995,000			55,570,000
Estimate of Fair Value Measurement [Member] | Fair Value, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		25,208,000			25,208,000			32,167,000
Investment securities - equity		134,811,000			134,811,000			138,701,000
Derivative Liability		0			0			0
Estimate of Fair Value Measurement [Member] | Fair Value, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		3,950,017,000			3,950,017,000			3,314,143,000
Investment securities - equity		25,750,000			25,750,000			0
Derivative Liability		92,995,000			92,995,000			55,570,000
Estimate of Fair Value Measurement [Member] | Fair Value, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale		0			0			0
Investment securities - equity		0			0			0
Derivative Liability		0			0			0
Junior Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)		(3,555,000)		$ 794,000	1,156,000		$ (8,837,000)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	[7]	(3,555,000)		$ 794,000	1,156,000		$ (8,837,000)
Junior Subordinated Debt [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Subordinated Debt Obligations, Fair Value Disclosure		$ 60,529,000			$ 60,529,000			$ 61,685,000

[1] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

[2] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

[3] Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

[4] Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

[5] Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $92,352 and the net carrying value of subordinated debt is increased by $3,417 as of September 30, 2020 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

[6] Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $53,292 and the net carrying value of subordinated debt is decreased by $401 as of December 31, 2019 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

[7] Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded as part of OCI, net of tax, and totaled $(2.7) million and $0.6 million for three months ended September 30, 2020 and 2019, respectively, and $0.9 million and $(6.7) million for the nine months ended September 30, 2020 and 2019, respectively.

XML

Fair Value Accounting - Change in Level 3 Liabilities Measured at Fair Value on Recurring Basis (Detail) $ in Thousands		3 Months Ended			9 Months Ended			12 Months Ended
		Sep. 30, 2020 USD ($)		Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)		Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, after Tax		$ 2,681		$ 598	$ 871		$ 6,664
Junior subordinated debt		60,529	[1]		60,529	[1]		$ 61,685	[2]
Fair Value, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Junior subordinated debt		60,529	[1]		$ 60,529	[1]		$ 61,685	[2]
Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description					Discounted cash flow method			Discounted cash flow method
Other Assets [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description					Collateral method			Collateral method
Junior Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	[3]	$ (3,555)		794	$ 1,156		$ (8,837)
Debt Instrument, Measurement Input		0.0365			0.0365			0.0509
Junior Subordinated Debt [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Junior subordinated debt		$ 60,529			$ 60,529			$ 61,685
Fair Value Measurements, Valuation Processes, Description					Implied credit rating of the Company		Implied credit rating of the Company
Junior Subordinated Debt [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance		(56,974)		58,315	$ (61,685)		$ (48,684)	(48,684)
Closing balance		$ (60,529)		$ (57,521)	$ (60,529)		$ (57,521)	$ (61,685)
Valuation Technique, Discounted Cash Flow [Member] | Junior Subordinated Debt [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description					Discounted cash flow		Discounted cash flow
Collateral Method [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description					Collateral method			Collateral method
Third Party Appraisal [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description					Third party appraisal			Third party appraisal
Third Party Appraisal [Member] | Other Assets [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description					Third party appraisal			Third party appraisal
Discount Rate [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description					Discount rate			Discount rate
Scheduled Cash Collections [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description								Scheduled cash collections
Proceeds from Non-Real Estate Collateral [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description								Proceeds from non-real estate collateral

[1] Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

[2] Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

[3] Unrealized gains/(losses) attributable to changes in the fair value of junior subordinated debt are recorded as part of OCI, net of tax, and totaled $(2.7) million and $0.6 million for three months ended September 30, 2020 and 2019, respectively, and $0.9 million and $(6.7) million for the nine months ended September 30, 2020 and 2019, respectively.

XML

Fair Value Accounting - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans without specific valuation allowance		$ 95,324
Impaired loans with an allowance recorded	$ (9,600)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with an allowance recorded		2,800
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	8,591	13,850
Collateral Dependent Loans, Net of Allowance	245,219	110,272
Fair Value, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	0	0
Collateral Dependent Loans, Net of Allowance	0	0
Fair Value, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	0	0
Collateral Dependent Loans, Net of Allowance	0	0
Fair Value, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets acquired through foreclosure	8,591	13,850
Collateral Dependent Loans, Net of Allowance	$ 245,219	$ 110,272
Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description	Discounted cash flow method	Discounted cash flow method
Other Assets [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description	Collateral method	Collateral method
Collateral Method [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description	Collateral method	Collateral method
Third Party Appraisal [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description	Third party appraisal	Third party appraisal
Level 3 Fair Value Measurement Inputs	Costs to sell	Costs to sell
Third Party Appraisal [Member] | Other Assets [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description	Third party appraisal	Third party appraisal
Level 3 Fair Value Measurement Inputs	Costs to sell	Costs to sell
Discount Rate [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description	Discount rate	Discount rate
Level 3 Fair Value Measurement Inputs	Contractual loan rate	Contractual loan rate
Scheduled Cash Collections [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description		Scheduled cash collections
Level 3 Fair Value Measurement Inputs		Probability of default
Proceeds from Non-Real Estate Collateral [Member] | Loans and Finance Receivables [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Processes, Description		Proceeds from non-real estate collateral
Level 3 Fair Value Measurement Inputs		Loss given default

XML

Fair Value Accounting - Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2020		Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Repossessed Assets	$ 8,600		$ 13,900
Financial assets
Debt Securities, Held-to-maturity	504,477		485,107
Available-for-sale Securities	3,975,225	[1]	3,346,310	[2]
Investment securities - equity	160,561	[1]	138,701	[2]
Loans, net	25,682,694		20,933,696
Accrued Investment Income Receivable	1,800
Financial liabilities
Deposits	28,843,396		22,796,493
Customer repurchase agreements	19,688		16,675
Junior subordinated debt	60,529	[3]	61,685	[4]
Fair Value, Nonrecurring [Member] | Reported Value Measurement [Member]
Financial assets
Debt Securities, Held-to-maturity	504,477		485,107
Loans, net	25,703,458		20,955,499
Financial liabilities
Deposits	28,843,396		22,796,493
Junior subordinated debt	618,772		393,563
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member]
Financial assets
Debt Securities, Held-to-maturity	548,140		516,261
Loans, net	26,107,177		21,256,462
Financial liabilities
Deposits	28,850,576		22,813,265
Junior subordinated debt	638,936		406,790
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Level 1 [Member]
Financial assets
Debt Securities, Held-to-maturity	0		0
Loans, net	0		0
Financial liabilities
Deposits	0		0
Junior subordinated debt	0		0
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Level 2 [Member]
Financial assets
Debt Securities, Held-to-maturity	548,140		516,261
Loans, net	0		0
Financial liabilities
Deposits	28,850,576		22,813,265
Junior subordinated debt	566,308		332,635
Fair Value, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Level 3 [Member]
Financial assets
Debt Securities, Held-to-maturity	0		0
Loans, net	26,107,177		21,256,462
Financial liabilities
Deposits	0		0
Junior subordinated debt	72,628		74,155
Fair Value, Recurring [Member]
Financial assets
Available-for-sale Securities	3,975,225		3,346,310
Investment securities - equity	160,561		138,701
Derivative Asset	4,119	[5]	1,903	[6]
Financial liabilities
Derivative Liability	92,995	[5]	55,570	[6]
Fair Value, Recurring [Member] | Level 1 [Member]
Financial assets
Available-for-sale Securities	25,208		32,167
Investment securities - equity	134,811		138,701
Derivative Asset	0	[5]	0	[6]
Financial liabilities
Junior subordinated debt	0	[3]	0	[4]
Derivative Liability	0	[5]	0	[6]
Fair Value, Recurring [Member] | Level 2 [Member]
Financial assets
Available-for-sale Securities	3,950,017		3,314,143
Investment securities - equity	25,750		0
Derivative Asset	4,119	[5]	1,903	[6]
Financial liabilities
Junior subordinated debt	0	[3]	0	[4]
Derivative Liability	92,995	[5]	55,570	[6]
Fair Value, Recurring [Member] | Level 3 [Member]
Financial assets
Available-for-sale Securities	0		0
Investment securities - equity	0		0
Derivative Asset	0	[5]	0	[6]
Financial liabilities
Junior subordinated debt	60,529	[3]	61,685	[4]
Derivative Liability	0	[5]	0	[6]
Fair Value, Recurring [Member] | Reported Value Measurement [Member]
Financial assets
Available-for-sale Securities	3,975,225		3,346,310
Investment securities - equity	160,561		138,701
Derivative Asset	4,119		1,903
Accrued Investment Income Receivable	140,827		108,694
Financial liabilities
Customer repurchase agreements	19,688		16,675
Derivative Liability	92,995		55,570
Interest Payable, Current	15,666		24,661
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member]
Financial assets
Available-for-sale Securities	3,975,225		3,346,310
Investment securities - equity	160,561		138,701
Derivative Asset	4,119		1,903
Accrued Investment Income Receivable	140,827		108,694
Financial liabilities
Customer repurchase agreements	19,688		16,675
Derivative Liability	92,995		55,570
Interest Payable, Current	15,666		24,661
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Level 1 [Member]
Financial assets
Available-for-sale Securities	25,208		32,167
Investment securities - equity	134,811		138,701
Derivative Asset	0		0
Accrued Investment Income Receivable	0		0
Financial liabilities
Customer repurchase agreements	0		0
Derivative Liability	0		0
Interest Payable, Current	0		0
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Level 2 [Member]
Financial assets
Available-for-sale Securities	3,950,017		3,314,143
Investment securities - equity	25,750		0
Derivative Asset	4,119		1,903
Accrued Investment Income Receivable	140,827		108,694
Financial liabilities
Customer repurchase agreements	19,688		16,675
Derivative Liability	92,995		55,570
Interest Payable, Current	15,666		24,661
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Level 3 [Member]
Financial assets
Available-for-sale Securities	0		0
Investment securities - equity	0		0
Derivative Asset	0		0
Accrued Investment Income Receivable	0		0
Financial liabilities
Customer repurchase agreements	0		0
Derivative Liability	0		0
Interest Payable, Current	$ 0		$ 0

[1] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

[2] Where ratings differ, the Company uses an average of the available ratings by major credit agencies.

[3] Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

[4] Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

[5] Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $92,352 and the net carrying value of subordinated debt is increased by $3,417 as of September 30, 2020 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

[6] Derivative assets and liabilities relate primarily to interest rate swaps, see "Note 8. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $53,292 and the net carrying value of subordinated debt is decreased by $401 as of December 31, 2019 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.

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Fair Value Accounting - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with an allowance recorded			$ 20,979
Impaired loans with an allowance recorded			(2,776)
Other assets acquired through foreclosure	$ 8,600		$ 13,900
Common Stock, Shares, Issued	102,993,777		104,527,544
Junior Subordinated Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Period of basis point spread	3.42%	3.18%
Percentage of LIBOR	0.23%	1.91%
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Loans, Net of Allowance	$ 245,219		$ 110,272
Fair Value, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Loans, Net of Allowance	$ 245,219		$ 110,272

XML

Segments - Operating Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019		Jun. 30, 2020	Jan. 01, 2020	[1]	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Operating Statistics [Line Items]
Service charges and fees	$ 5,913	$ 5,888	$ 17,447		$ 17,121
Cash, Cash Equivalents and Investment Securities	6,119,800		6,119,800							$ 4,471,200
Loans and Leases Receivable, Net of Deferred Income	25,993,254		25,993,254							21,101,493
Less: Allowance for credit losses	(310,560)		(310,560)							(167,797)
Loans and Leases Receivable Including Held for Sale, Net	25,703,500		25,703,500							20,955,500
Other Repossessed Assets	8,600		8,600							13,900
Goodwill and intangible assets, net	298,987		298,987							297,608
Other Assets Segment	1,204,600		1,204,600							1,083,700
Assets	33,335,506		33,335,506							26,821,948
Deposits	28,843,396		28,843,396							22,796,493
Other borrowings	628,800		628,800							393,600
Other Liabilities Segment	639,300		639,300							615,100
Total liabilities	30,111,460		30,111,460							23,805,200
Stockholders' equity	3,224,046	2,923,063	3,224,046		2,923,063		$ 3,102,414	$ 2,991,801		3,016,748	$ 2,851,264	$ 2,613,734
Liabilities and Equity	33,335,506		33,335,506							26,821,948
Excess Funds Provided by (Used in) Segment Basis	0		0							0
Net interest income	284,738	266,422	852,158		768,439
Provision for Loan, Lease, and Other Losses	(14,661)	(3,803)	(157,837)		(15,303)
Net interest income (loss) after provision for credit losses	270,077	262,619	694,321		753,136
Total non-interest income	20,606	19,441	46,985		49,069
Non-interest expense	(124,092)	(126,152)	(359,372)		(352,279)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	166,591	155,908	381,934		449,926
Income tax expense (benefit)	30,822	28,533	68,929		78,819
Net income	135,769	127,375	313,005		371,107
Debit and credit card interchange fees	1,597	1,977	3,942	[2]	5,830
Success fees (2)	38	605	423	[3]	1,125
Other income	69	80	231		187
Total revenue from contracts with customers	7,617	8,550	22,043		24,263
Revenues outside the scope of ASC 606 (3)	12,989	10,891	24,942	[4]	24,806
Operating Segments [Member] | HOA Services [Member]
Operating Statistics [Line Items]
Service charges and fees	114	77	308		241
Cash, Cash Equivalents and Investment Securities	0		0							0
Loans and Leases Receivable, Net of Deferred Income	280,000		280,000							237,200
Less: Allowance for credit losses	(2,300)		(2,300)							(2,000)
Loans and Leases Receivable Including Held for Sale, Net	277,700		277,700							235,200
Other Repossessed Assets	0		0							0
Goodwill and intangible assets, net	0		0							0
Other Assets Segment	5,400		5,400							1,200
Assets	283,100		283,100							236,400
Deposits	3,697,900		3,697,900							3,210,100
Other borrowings	0		0							0
Other Liabilities Segment	(2,700)		(2,700)							1,800
Total liabilities	3,695,200		3,695,200							3,211,900
Stockholders' equity	104,900		104,900							84,500
Liabilities and Equity	3,800,100		3,800,100							3,296,400
Excess Funds Provided by (Used in) Segment Basis	3,517,000		3,517,000							3,060,000
Net interest income	22,184	21,974	67,740		64,520
Provision for Loan, Lease, and Other Losses	(138)	(60)	(2,198)		(27)
Net interest income (loss) after provision for credit losses	22,322	21,914	69,938		64,493
Total non-interest income	134	84	350		268
Non-interest expense	(9,896)	(9,769)	(29,965)		(27,777)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	12,560	12,229	40,323		36,984
Income tax expense (benefit)	2,889	2,813	9,361		8,506
Net income	9,671	9,416	30,962		28,478
Debit and credit card interchange fees	12	12	27	[5]	31	[6]
Success fees (2)	0	0	0	[7]	0	[8]
Other income	2	(3)	4		2
Total revenue from contracts with customers	128	86	339		274
Revenues outside the scope of ASC 606 (3)	6	(2)	11	[9]	(6)	[10]
Operating Segments [Member] | Public and Non-Profit Finance [Member]
Operating Statistics [Line Items]
Service charges and fees	0	0	0		0
Cash, Cash Equivalents and Investment Securities	0		0							0
Loans and Leases Receivable, Net of Deferred Income	1,686,700		1,686,700							1,635,600
Less: Allowance for credit losses	(17,900)		(17,900)							(13,700)
Loans and Leases Receivable Including Held for Sale, Net	1,668,800		1,668,800							1,621,900
Other Repossessed Assets	0		0							0
Goodwill and intangible assets, net	0		0							0
Other Assets Segment	11,900		11,900							18,300
Assets	1,680,700		1,680,700							1,640,200
Deposits	0		0							100
Other borrowings	0		0							0
Other Liabilities Segment	91,800		91,800							52,900
Total liabilities	91,800		91,800							53,000
Stockholders' equity	130,300		130,300							131,600
Liabilities and Equity	222,100		222,100							184,600
Excess Funds Provided by (Used in) Segment Basis	(1,458,600)		(1,458,600)							(1,455,600)
Net interest income	2,800	3,394	6,351		10,278
Provision for Loan, Lease, and Other Losses	(781)	(191)	(553)		(136)
Net interest income (loss) after provision for credit losses	2,019	3,585	5,798		10,414
Total non-interest income	0	0	0		0
Non-interest expense	(1,724)	(1,845)	(5,114)		(5,683)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	295	1,740	684		4,731
Income tax expense (benefit)	68	400	380		1,088
Net income	227	1,340	304		3,643
Debit and credit card interchange fees	0	0	0	[5]	0	[6]
Success fees (2)	0	0	0	[7]	0	[8]
Other income	0	0	0		0
Total revenue from contracts with customers	0	0	0		0
Revenues outside the scope of ASC 606 (3)	0	0	0	[9]	0	[10]
Operating Segments [Member] | Technology and Innovation [Member]
Operating Statistics [Line Items]
Service charges and fees	963	813	2,707		2,333
Cash, Cash Equivalents and Investment Securities	0		0							0
Loans and Leases Receivable, Net of Deferred Income	2,329,300		2,329,300							1,552,000
Less: Allowance for credit losses	(41,500)		(41,500)							(12,600)
Loans and Leases Receivable Including Held for Sale, Net	2,287,800		2,287,800							1,539,400
Other Repossessed Assets	0		0							0
Goodwill and intangible assets, net	119,300		119,300							119,700
Other Assets Segment	9,200		9,200							7,300
Assets	2,416,300		2,416,300							1,666,400
Deposits	4,646,400		4,646,400							3,771,500
Other borrowings	0		0							0
Other Liabilities Segment	5,400		5,400							100
Total liabilities	4,651,800		4,651,800							3,771,600
Stockholders' equity	397,500		397,500							317,500
Liabilities and Equity	5,049,300		5,049,300							4,089,100
Excess Funds Provided by (Used in) Segment Basis	2,633,000		2,633,000							2,422,700
Net interest income	48,013	33,932	137,436		91,871
Provision for Loan, Lease, and Other Losses	(9,048)	(895)	(25,471)		(2,635)
Net interest income (loss) after provision for credit losses	57,061	33,037	111,965		89,236
Total non-interest income	3,126	5,422	9,247		10,946
Non-interest expense	(11,530)	(12,068)	(36,188)		(33,971)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	48,657	26,391	85,024		66,211
Income tax expense (benefit)	11,191	6,070	19,461		15,229
Net income	37,466	20,321	65,563		50,982
Debit and credit card interchange fees	0	0	0	[5]	0	[6]
Success fees (2)	38	605	279	[7]	1,125	[8]
Other income	0	0	0		4
Total revenue from contracts with customers	1,001	1,418	2,986		3,462
Revenues outside the scope of ASC 606 (3)	2,125	4,004	6,261	[9]	7,484	[10]
Operating Segments [Member] | HFF Loan Portfolio [Member]
Operating Statistics [Line Items]
Service charges and fees	0	0	0		0
Cash, Cash Equivalents and Investment Securities	0		0							0
Loans and Leases Receivable, Net of Deferred Income	2,099,300		2,099,300							1,930,800
Less: Allowance for credit losses	(40,700)		(40,700)							(12,600)
Loans and Leases Receivable Including Held for Sale, Net	2,058,600		2,058,600							1,918,200
Other Repossessed Assets	0		0							0
Goodwill and intangible assets, net	100		100							100
Other Assets Segment	33,400		33,400							8,800
Assets	2,092,100		2,092,100							1,927,100
Deposits	0		0							0
Other borrowings	0		0							0
Other Liabilities Segment	900		900							0
Total liabilities	900		900							0
Stockholders' equity	167,500		167,500							158,500
Liabilities and Equity	168,400		168,400							158,500
Excess Funds Provided by (Used in) Segment Basis	(1,923,700)		(1,923,700)							(1,768,600)
Net interest income	12,536	12,845	39,442		39,279
Provision for Loan, Lease, and Other Losses	(2,200)	(1,956)	(27,530)		(3,587)
Net interest income (loss) after provision for credit losses	10,336	10,889	11,912		35,692
Total non-interest income	0	0	0		0
Non-interest expense	(2,596)	(2,197)	(7,353)		(6,757)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	7,740	8,692	4,559		28,935
Income tax expense (benefit)	1,780	1,999	893		6,655
Net income	5,960	6,693	3,666		22,280
Debit and credit card interchange fees	0	0	0	[5]	0	[6]
Success fees (2)	0	0	0	[7]	0	[8]
Other income	0	0	0		0
Total revenue from contracts with customers	0	0	0		0
Revenues outside the scope of ASC 606 (3)	0	0	0	[9]	0	[10]
Operating Segments [Member] | Other National Business Lines [Member]
Operating Statistics [Line Items]
Service charges and fees	3	1	6		3
Cash, Cash Equivalents and Investment Securities	26,600		26,600							10,100
Loans and Leases Receivable, Net of Deferred Income	8,451,800		8,451,800							6,098,700
Less: Allowance for credit losses	(63,900)		(63,900)							(49,300)
Loans and Leases Receivable Including Held for Sale, Net	8,387,900		8,387,900							6,049,400
Other Repossessed Assets	100		100							0
Goodwill and intangible assets, net	2,500		2,500							0
Other Assets Segment	110,300		110,300							64,300
Assets	8,527,400		8,527,400							6,123,800
Deposits	61,400		61,400							36,900
Other borrowings	0		0							0
Other Liabilities Segment	56,800		56,800							2,800
Total liabilities	118,200		118,200							39,700
Stockholders' equity	673,200		673,200							494,300
Liabilities and Equity	791,400		791,400							534,000
Excess Funds Provided by (Used in) Segment Basis	(7,736,000)		(7,736,000)							(5,589,800)
Net interest income	46,582	32,935	128,096		88,212
Provision for Loan, Lease, and Other Losses	(2,706)	(1,210)	(4,737)		(6,558)
Net interest income (loss) after provision for credit losses	49,288	31,725	132,833		81,654
Total non-interest income	2,924	1,708	4,108		3,915
Non-interest expense	(12,335)	(11,320)	(35,674)		(31,729)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	39,877	22,113	101,267		53,840
Income tax expense (benefit)	9,172	5,086	23,083		12,383
Net income	30,705	17,027	78,184		41,457
Debit and credit card interchange fees	0	0	0	[5]	0	[6]
Success fees (2)	0	0	0	[7]	0	[8]
Other income	35	35	125		109
Total revenue from contracts with customers	38	36	131		112
Revenues outside the scope of ASC 606 (3)	2,886	1,672	3,977	[9]	3,803	[10]
Reportable Geographical Components [Member] | ARIZONA
Operating Statistics [Line Items]
Service charges and fees	1,188	1,226	3,525		3,525
Cash, Cash Equivalents and Investment Securities	1,500		1,500							1,800
Loans and Leases Receivable, Net of Deferred Income	4,388,100		4,388,100							3,847,900
Less: Allowance for credit losses	(57,000)		(57,000)							(31,600)
Loans and Leases Receivable Including Held for Sale, Net	4,331,100		4,331,100							3,816,300
Other Repossessed Assets	0		0							0
Goodwill and intangible assets, net	0		0							0
Other Assets Segment	47,800		47,800							48,600
Assets	4,380,400		4,380,400							3,866,700
Deposits	8,541,500		8,541,500							5,384,700
Other borrowings	0		0							0
Other Liabilities Segment	28,700		28,700							17,800
Total liabilities	8,570,200		8,570,200							5,402,500
Stockholders' equity	576,400		576,400							453,600
Liabilities and Equity	9,146,600		9,146,600							5,856,100
Excess Funds Provided by (Used in) Segment Basis	4,766,200		4,766,200							1,989,400
Net interest income	83,492	68,828	229,701		183,772
Provision for Loan, Lease, and Other Losses	(9,830)	(103)	(46,623)		(1,705)
Net interest income (loss) after provision for credit losses	73,662	68,725	183,078		182,067
Total non-interest income	1,771	1,821	4,943		5,050
Non-interest expense	(17,644)	(27,241)	(58,674)		(72,183)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	57,789	43,305	129,347		114,934
Income tax expense (benefit)	14,447	10,826	32,207		28,733
Net income	43,342	32,479	97,140		86,201
Debit and credit card interchange fees	426	451	990	[2]	1,125
Success fees (2)	0	0	0	[3]	0
Other income	8	8	20		8
Total revenue from contracts with customers	1,622	1,685	4,535		4,658
Revenues outside the scope of ASC 606 (3)	149	136	408	[4]	392
Reportable Geographical Components [Member] | NEVADA
Operating Statistics [Line Items]
Service charges and fees	1,826	2,036	5,572		5,980
Cash, Cash Equivalents and Investment Securities	8,800		8,800							9,000
Loans and Leases Receivable, Net of Deferred Income	2,612,200		2,612,200							2,252,500
Less: Allowance for credit losses	(36,400)		(36,400)							(18,000)
Loans and Leases Receivable Including Held for Sale, Net	2,575,800		2,575,800							2,234,500
Other Repossessed Assets	8,500		8,500							13,000
Goodwill and intangible assets, net	23,200		23,200							23,200
Other Assets Segment	60,100		60,100							59,400
Assets	2,676,400		2,676,400							2,339,100
Deposits	4,733,900		4,733,900							4,350,100
Other borrowings	0		0							0
Other Liabilities Segment	18,800		18,800							11,900
Total liabilities	4,752,700		4,752,700							4,362,000
Stockholders' equity	343,700		343,700							301,000
Liabilities and Equity	5,096,400		5,096,400							4,663,000
Excess Funds Provided by (Used in) Segment Basis	2,420,000		2,420,000							2,323,900
Net interest income	46,625	40,565	139,328		119,191
Provision for Loan, Lease, and Other Losses	(8,548)	(62)	(25,015)		(166)
Net interest income (loss) after provision for credit losses	38,077	40,627	114,313		119,025
Total non-interest income	2,391	2,677	7,355		7,926
Non-interest expense	(15,800)	(15,211)	(44,414)		(45,099)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	24,668	28,093	77,254		81,852
Income tax expense (benefit)	5,180	5,899	16,164		17,189
Net income	19,488	22,194	61,090		64,663
Debit and credit card interchange fees	306	440	770	[2]	1,200
Success fees (2)	0	0	0	[3]	0
Other income	6	14	15		8
Total revenue from contracts with customers	2,138	2,490	6,357		7,188
Revenues outside the scope of ASC 606 (3)	253	187	998	[4]	738
Reportable Geographical Components [Member] | Southern California [Member]
Operating Statistics [Line Items]
Service charges and fees	889	770	2,466		2,218
Cash, Cash Equivalents and Investment Securities	1,800		1,800							2,300
Loans and Leases Receivable, Net of Deferred Income	2,376,700		2,376,700							2,253,900
Less: Allowance for credit losses	(31,500)		(31,500)							(18,300)
Loans and Leases Receivable Including Held for Sale, Net	2,345,200		2,345,200							2,235,600
Other Repossessed Assets	0		0							900
Goodwill and intangible assets, net	0		0							0
Other Assets Segment	16,200		16,200							15,000
Assets	2,363,200		2,363,200							2,253,800
Deposits	3,502,000		3,502,000							2,585,300
Other borrowings	0		0							0
Other Liabilities Segment	8,600		8,600							1,200
Total liabilities	3,510,600		3,510,600							2,586,500
Stockholders' equity	281,200		281,200							253,300
Liabilities and Equity	3,791,800		3,791,800							2,839,800
Excess Funds Provided by (Used in) Segment Basis	1,428,600		1,428,600							586,000
Net interest income	35,656	33,630	104,348		95,751
Provision for Loan, Lease, and Other Losses	(5,213)	(189)	(23,750)		(611)
Net interest income (loss) after provision for credit losses	30,443	33,819	80,598		95,140
Total non-interest income	1,186	1,079	3,269		3,054
Non-interest expense	(14,020)	(15,185)	(43,216)		(44,890)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	17,609	19,713	40,651		53,304
Income tax expense (benefit)	4,930	5,520	11,241		14,925
Net income	12,679	14,193	29,410		38,379
Debit and credit card interchange fees	167	229	401	[2]	596
Success fees (2)	0	0	0	[3]	0
Other income	(1)	4	(6)		6
Total revenue from contracts with customers	1,055	1,003	2,861		2,820
Revenues outside the scope of ASC 606 (3)	131	76	408	[4]	234
Reportable Geographical Components [Member] | Northern California [Member]
Operating Statistics [Line Items]
Service charges and fees	930	965	2,863		2,821
Cash, Cash Equivalents and Investment Securities	2,300		2,300							2,200
Loans and Leases Receivable, Net of Deferred Income	1,785,800		1,785,800							1,311,200
Less: Allowance for credit losses	(19,300)		(19,300)							(9,700)
Loans and Leases Receivable Including Held for Sale, Net	1,766,500		1,766,500							1,301,500
Other Repossessed Assets	0		0							0
Goodwill and intangible assets, net	153,900		153,900							154,600
Other Assets Segment	20,100		20,100							19,800
Assets	1,942,800		1,942,800							1,478,100
Deposits	2,741,100		2,741,100							2,373,600
Other borrowings	0		0							0
Other Liabilities Segment	20,000		20,000							15,900
Total liabilities	2,761,100		2,761,100							2,389,500
Stockholders' equity	361,500		361,500							312,500
Liabilities and Equity	3,122,600		3,122,600							2,702,000
Excess Funds Provided by (Used in) Segment Basis	1,179,800		1,179,800							1,223,900
Net interest income	28,353	23,504	85,345		70,533
Provision for Loan, Lease, and Other Losses	(1,856)	(218)	(12,680)		(653)
Net interest income (loss) after provision for credit losses	26,497	23,286	72,665		71,186
Total non-interest income	2,381	1,917	6,450		6,299
Non-interest expense	(12,885)	(12,379)	(38,460)		(38,419)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	15,993	12,824	40,655		39,066
Income tax expense (benefit)	4,478	3,591	11,340		10,939
Net income	11,515	9,233	29,315		28,127
Debit and credit card interchange fees	686	845	1,754	[2]	2,878
Success fees (2)	0	0	144	[3]	0
Other income	18	19	59		43
Total revenue from contracts with customers	1,634	1,829	4,820		5,742
Revenues outside the scope of ASC 606 (3)	747	88	1,630	[4]	557
Corporate & Other
Operating Statistics [Line Items]
Service charges and fees	0	0	0		0
Cash, Cash Equivalents and Investment Securities	6,078,800		6,078,800							4,445,800
Loans and Leases Receivable, Net of Deferred Income	4,100		4,100							3,500
Less: Allowance for credit losses	0		0							0
Loans and Leases Receivable Including Held for Sale, Net	4,100		4,100							3,500
Other Repossessed Assets	0		0							0
Goodwill and intangible assets, net	0		0							0
Other Assets Segment	890,200		890,200							841,000
Assets	6,973,100		6,973,100							5,290,300
Deposits	919,200		919,200							1,084,200
Other borrowings	628,800		628,800							393,600
Other Liabilities Segment	411,000		411,000							510,700
Total liabilities	1,959,000		1,959,000							1,988,500
Stockholders' equity	187,800		187,800							509,900
Liabilities and Equity	2,146,800		2,146,800							2,498,400
Excess Funds Provided by (Used in) Segment Basis	(4,826,300)		(4,826,300)							$ (2,791,900)
Net interest income	(41,503)	(5,185)	(85,629)		5,032
Provision for Loan, Lease, and Other Losses	1,875	197	(3,150)		(803)
Net interest income (loss) after provision for credit losses	(39,628)	(4,988)	(88,779)		4,229
Total non-interest income	6,693	4,733	11,263		11,611
Non-interest expense	(25,662)	(18,937)	(60,314)		(45,771)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(58,597)	(19,192)	(137,830)		(29,931)
Income tax expense (benefit)	(23,313)	(13,671)	(55,201)		(36,828)
Net income	(35,284)	(5,521)	(82,629)		6,897
Debit and credit card interchange fees	0	0	0	[5]	0	[6]
Success fees (2)	0	0	0	[7]	0	[8]
Other income	1	3	14		7
Total revenue from contracts with customers	1	3	14		7
Revenues outside the scope of ASC 606 (3)	$ 6,692	$ 4,730	$ 11,249	[9]	$ 11,604	[10]

[1] As adjusted for adoption of ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The cumulative effect of adoption of this guidance at January 1, 2020 resulted in a decrease to retained earnings of $24.9 million due to an increase in the allowance for credit losses. See "Note 1. Summary of Significant Accounting Policies for further discussion."

[2] Included as part of Card income in the Consolidated Income Statement.

[3] Included as part of Income from equity investments in the Consolidated Income Statement.

[4] Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

[5] Included as part of Card income in the Consolidated Income Statement.

[6] Included as part of Card income in the Consolidated Income Statement.

[7] Included as part of Income from equity investments in the Consolidated Income Statement.

[8] Included as part of Income from equity investments in the Consolidated Income Statement.

[9] Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

[10] Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

XML

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019		Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Service charges and fees	$ 5,913	$ 5,888	$ 17,447		$ 17,121
Accounts Receivable, after Allowance for Credit Loss	1,500		1,500				$ 1,600
Debit and credit card interchange fees	1,597	1,977	3,942	[1]	5,830
Success fees (2)	38	605	423	[2]	1,125
Other income	69	80	231		187
Total revenue from contracts with customers	7,617	8,550	22,043		24,263
Revenues outside the scope of ASC 606 (3)	12,989	10,891	24,942	[3]	24,806
Total non-interest income	20,606	19,441	46,985		49,069
Operating Segments [Member] | HOA Services [Member]
Disaggregation of Revenue [Line Items]
Service charges and fees	114	77	308		241
Debit and credit card interchange fees	12	12	27	[4]	31	[5]
Success fees (2)	0	0	0	[6]	0	[7]
Other income	2	(3)	4		2
Total revenue from contracts with customers	128	86	339		274
Revenues outside the scope of ASC 606 (3)	6	(2)	11	[8]	(6)	[9]
Total non-interest income	134	84	350		268
Operating Segments [Member] | Public and Non-Profit Finance [Member]
Disaggregation of Revenue [Line Items]
Service charges and fees	0	0	0		0
Debit and credit card interchange fees	0	0	0	[4]	0	[5]
Success fees (2)	0	0	0	[6]	0	[7]
Other income	0	0	0		0
Total revenue from contracts with customers	0	0	0		0
Revenues outside the scope of ASC 606 (3)	0	0	0	[8]	0	[9]
Total non-interest income	0	0	0		0
Operating Segments [Member] | Technology and Innovation [Member]
Disaggregation of Revenue [Line Items]
Service charges and fees	963	813	2,707		2,333
Debit and credit card interchange fees	0	0	0	[4]	0	[5]
Success fees (2)	38	605	279	[6]	1,125	[7]
Other income	0	0	0		4
Total revenue from contracts with customers	1,001	1,418	2,986		3,462
Revenues outside the scope of ASC 606 (3)	2,125	4,004	6,261	[8]	7,484	[9]
Total non-interest income	3,126	5,422	9,247		10,946
Operating Segments [Member] | HFF Loan Portfolio [Member]
Disaggregation of Revenue [Line Items]
Service charges and fees	0	0	0		0
Debit and credit card interchange fees	0	0	0	[4]	0	[5]
Success fees (2)	0	0	0	[6]	0	[7]
Other income	0	0	0		0
Total revenue from contracts with customers	0	0	0		0
Revenues outside the scope of ASC 606 (3)	0	0	0	[8]	0	[9]
Total non-interest income	0	0	0		0
Operating Segments [Member] | Other National Business Lines [Member]
Disaggregation of Revenue [Line Items]
Service charges and fees	3	1	6		3
Debit and credit card interchange fees	0	0	0	[4]	0	[5]
Success fees (2)	0	0	0	[6]	0	[7]
Other income	35	35	125		109
Total revenue from contracts with customers	38	36	131		112
Revenues outside the scope of ASC 606 (3)	2,886	1,672	3,977	[8]	3,803	[9]
Total non-interest income	2,924	1,708	4,108		3,915
Reportable Geographical Components [Member] | ARIZONA
Disaggregation of Revenue [Line Items]
Service charges and fees	1,188	1,226	3,525		3,525
Debit and credit card interchange fees	426	451	990	[1]	1,125
Success fees (2)	0	0	0	[2]	0
Other income	8	8	20		8
Total revenue from contracts with customers	1,622	1,685	4,535		4,658
Revenues outside the scope of ASC 606 (3)	149	136	408	[3]	392
Total non-interest income	1,771	1,821	4,943		5,050
Reportable Geographical Components [Member] | NEVADA
Disaggregation of Revenue [Line Items]
Service charges and fees	1,826	2,036	5,572		5,980
Debit and credit card interchange fees	306	440	770	[1]	1,200
Success fees (2)	0	0	0	[2]	0
Other income	6	14	15		8
Total revenue from contracts with customers	2,138	2,490	6,357		7,188
Revenues outside the scope of ASC 606 (3)	253	187	998	[3]	738
Total non-interest income	2,391	2,677	7,355		7,926
Reportable Geographical Components [Member] | Southern California [Member]
Disaggregation of Revenue [Line Items]
Service charges and fees	889	770	2,466		2,218
Debit and credit card interchange fees	167	229	401	[1]	596
Success fees (2)	0	0	0	[2]	0
Other income	(1)	4	(6)		6
Total revenue from contracts with customers	1,055	1,003	2,861		2,820
Revenues outside the scope of ASC 606 (3)	131	76	408	[3]	234
Total non-interest income	1,186	1,079	3,269		3,054
Reportable Geographical Components [Member] | Northern California [Member]
Disaggregation of Revenue [Line Items]
Service charges and fees	930	965	2,863		2,821
Debit and credit card interchange fees	686	845	1,754	[1]	2,878
Success fees (2)	0	0	144	[2]	0
Other income	18	19	59		43
Total revenue from contracts with customers	1,634	1,829	4,820		5,742
Revenues outside the scope of ASC 606 (3)	747	88	1,630	[3]	557
Total non-interest income	2,381	1,917	6,450		6,299
Corporate & Other
Disaggregation of Revenue [Line Items]
Service charges and fees	0	0	0		0
Debit and credit card interchange fees	0	0	0	[4]	0	[5]
Success fees (2)	0	0	0	[6]	0	[7]
Other income	1	3	14		7
Total revenue from contracts with customers	1	3	14		7
Revenues outside the scope of ASC 606 (3)	6,692	4,730	11,249	[8]	11,604	[9]
Total non-interest income	$ 6,693	$ 4,733	$ 11,263		$ 11,611

[1] Included as part of Card income in the Consolidated Income Statement.

[2] Included as part of Income from equity investments in the Consolidated Income Statement.

[3] Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

[4] Included as part of Card income in the Consolidated Income Statement.

[5] Included as part of Card income in the Consolidated Income Statement.

[6] Included as part of Income from equity investments in the Consolidated Income Statement.

[7] Included as part of Income from equity investments in the Consolidated Income Statement.

[8] Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

[9] Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."

XML

Label	Element	Value
Retained Earnings [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 1,655,370,000
Common Stock [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 10,000
Shares, Issued	us-gaap_SharesIssued	102,524,000
AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 25,008,000
Treasury Stock [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	62,728,000
Additional Paid-in Capital [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 1,374,141,000

[1] As adjusted for adoption of ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The cumulative effect of adoption of this guidance at January 1, 2020 resulted in a decrease to retained earnings of $24.9 million due to an increase in the allowance for credit losses. See "Note 1. Summary of Significant Accounting Policies for further discussion."