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 March 31, 2021, 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 No. 0-10587

FULTON FINANCIAL CORPORATION

(Exact name of registrant as specified in its charter) 

Pennsylvania			23-2195389
(State or other jurisdiction of incorporation or organization)			(I.R.S. Employer Identification No.)
One Penn Square	Lancaster,	Pennsylvania	17602
(Address of principal executive offices)			(Zip Code)

(717) 291-2411

(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, par value $2.50	FULT	The Nasdaq Stock Market, LLC
Depositary Shares, Each Representing 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A	FULTP	The Nasdaq Stock Market, LLC

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  ☒    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  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a 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 Act).    Yes  ☐    No  ☒

APPLICABLE ONLY TO CORPORATE ISSUERS: Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date:

Common Stock, $2.50 Par Value –162,606,000 shares outstanding as of April 30, 2021.

1

FULTON FINANCIAL CORPORATION

FORM 10-Q FOR THE THREE MONTHS ENDED MARCH 31, 2021

INDEX

Description		Page
Glossary of Terms		3
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements (Unaudited):
(a)	Consolidated Balance Sheets - March 31, 2021 and December 31, 2020	5
(b)	Consolidated Statements of Income - Three months ended March 31, 2021 and 2020	6
(c)	Consolidated Statements of Comprehensive Income - Three months ended March 31, 2021 and 2020	7
(d)	Consolidated Statements of Shareholders’ Equity - Three months ended March 31, 2021 and 2020	8
(e)	Consolidated Statements of Cash Flows - Three months ended March 31, 2021 and 2020	9
(f)	Notes to Consolidated Financial Statements	10
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations		41
Item 3. Quantitative and Qualitative Disclosures about Market Risk		61
Item 4. Controls and Procedures		64
PART II. OTHER INFORMATION
Item 1. Legal Proceedings		64
Item 1A. Risk Factors		64
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds		64
Item 3. Defaults Upon Senior Securities - (not applicable)
Item 4. Mine Safety Disclosures - (not applicable)
Item 5. Other Information - (none to be reported)
Item 6. Exhibits		65
Signatures		66

2

FULTON FINANCIAL CORPORATION
GLOSSARY OF DEFINED ACRONYMS AND TERMS
ACL	Allowance for Credit Losses
AFS	Available for Sale
ALCO	Asset/Liability Management Committee
AML	Anti-Money Laundering
AOCI	Accumulated other comprehensive income
ARC	Auction Rate Security
ASC	Accounting Standards Codification
ASU	Accounting Standards Update
bp	basis point(s)
BSA	Bank Secrecy Act
CARES Act	Coronavirus Aid, Relief, and Economic Security Act
CECL	Current Expected Credit Losses
Corporation or Company	Fulton Financial Corporation
COVID-19	Coronavirus
ETR	Effective Tax Rate
Exchange Act	Securities Exchange Act of 1934
EAD	Exposure at default
FASB	Financial Accounting Standards Board
FDIC	Federal Deposit Insurance Corporation
Fed Funds Rate	Target Federal Funds Rate
FHLB	Federal Home Loan Bank
FOMC	Federal Open Market Committee
FRB	Federal Reserve Bank
FTE	Fully Taxable-Equivalent
Fulton Bank or the Bank	Fulton Bank, N.A.
GAAP	U.S. Generally Accepted Accounting Principles
HTM	Held to Maturity
LGD	Loss given default
LIBOR	London Interbank Offered Rate
MSRs	Mortgage Servicing Rights
NIM	Net Interest Margin
N/M	Not meaningful
Net Loans	Loans and lease receivables, (net of unearned income)
OBS	Off-Balance-Sheet
OCI	Other comprehensive income
OREO	Other Real Estate Owned
OTTI	Other-than-temporary impairment
PD	Probability of default
PPP	Paycheck Protection Program
PSU	Performance-Based Restricted Stock Unit
RSU	Restricted Stock Unit
SBA	Small Business Administration
SEC	United States Securities and Exchange Commission
TCI	Tax Credit Investment

3

TDR	Troubled Debt Restructuring
TruPS	Trust Preferred Securities
Visa Shares	Visa, Inc. Class B restricted shares

Note: Some numbers contained in the document may not sum due to rounding

4

Item 1. Financial Statements

CONSOLIDATED BALANCE SHEETS 

(in thousands, except per-share data)

	March 31, 2021		December 31, 2020
	(unaudited)
ASSETS
Cash and due from banks	$	102,570	$	120,462
Interest-bearing deposits with other banks	1,559,306		1,727,370
Cash and cash equivalents	1,661,876		1,847,832
FRB and FHLB stock	66,209		92,129
Loans held for sale	34,092		83,886
Investment securities:
AFS, at estimated fair value	2,758,597		3,062,143
HTM, at amortized cost	853,413		278,281
Net Loans	18,990,986		18,900,820
Less: ACL - loans	(265,986)		(277,567)
Loans, net	18,725,000		18,623,253
Net premises and equipment	229,035		231,480
Accrued interest receivable	65,649		72,942
Goodwill and intangible assets	536,544		536,659
Other assets	962,575		1,078,128
Total Assets	$	25,892,990	$	25,906,733
LIABILITIES
Deposits:
Noninterest-bearing	$	7,046,116	$	6,531,002
Interest-bearing	14,587,722		14,308,205
Total Deposits	21,633,838		20,839,207
Short-term borrowings	520,989		630,066
Accrued interest payable	5,618		10,365
Long-term borrowings	626,407		1,296,263
Other liabilities	476,483		514,004
Total Liabilities	23,263,335		23,289,905
SHAREHOLDERS’ EQUITY
Preferred stock, no par value, 10,000,000 shares authorized; Series A, 200,000 shares authorized and issued in 2020, liquidation preference of $1,000 per share	192,878		192,878
Common stock, $2.50 par value, 600.0 million shares authorized, 223.2 million shares issued in 2021 and in 2020	558,116		557,917
Additional paid-in capital	1,511,101		1,508,117
Retained earnings	1,168,491		1,120,781
Accumulated other comprehensive gain	25,838		65,091
Treasury stock, at cost, 60.7 million shares in 2021 and 60.8 million shares in 2020	(826,769)		(827,956)
Total Shareholders’ Equity	2,629,655		2,616,828
Total Liabilities and Shareholders’ Equity	$	25,892,990	$	25,906,733
See Notes to Consolidated Financial Statements

5

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

(in thousands, except per-share data)	Three months ended March 31
	2021		2020
INTEREST INCOME
Loans, including fees	$	163,985	$	175,523
Investment securities:
Taxable	13,691		16,294
Tax-exempt	5,653		4,709
Loans held for sale	471		320
Other interest income	1,136		2,532
Total Interest Income	184,936		199,378
Interest Expense
Deposits	9,602		26,440
Short-term borrowings	188		4,073
Long-term borrowings	10,698		8,119
Total Interest Expense	20,488		38,632
Net Interest Income	164,448		160,746
Provision for credit losses	(5,500)		44,030
Net Interest Income After Provision for Credit Losses	169,948		116,716
Non-Interest Income
Commercial banking	16,342		18,419
Consumer banking	10,754		11,239
Wealth management	17,347		15,055
Mortgage banking	13,960		6,234
Other	3,519		3,651
Non-Interest Income Before Investment Securities Gains	61,922		54,598
Investment securities gains, net	33,475		46
Total Non-Interest Income	95,397		54,644
NON-INTEREST EXPENSE
Salaries and employee benefits	82,586		80,228
Net occupancy	13,982		13,486
Data processing and software	13,561		11,645
Other outside services	8,490		7,881
State taxes	4,505		2,804
Equipment	3,428		3,418
Professional fees	2,779		4,202
FDIC insurance	2,624		2,808
Amortization of TCI	1,531		1,450
Marketing	1,002		1,579
Intangible amortization	115		132
Debt extinguishment	32,163		—
Other	11,618		12,919
Total Non-Interest Expense	178,384		142,552
Income Before Income Taxes	86,961		28,808
Income taxes	13,898		2,761
Net Income	73,063		26,047
Preferred stock dividends	(2,591)		—
Net Income Available to Common Shareholders	$	70,472	$	26,047
PER SHARE:
Net Income (Basic)	$	0.43	$	0.16
Net Income (Diluted)	0.43		0.16
Cash Dividends	0.14		0.13
See Notes to Consolidated Financial Statements

6

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

(in thousands)

	Three months ended March 31
	2021		2020
Net Income	$	73,063	$	26,047
Other Comprehensive (Loss) Income, net of tax:
Unrealized (loss) gain on securities	(39,999)		17,431
Reclassification adjustment for securities gains included in net income	377		(36)
Amortization of net unrealized losses on AFS securities transferred to HTM	1,787		795
Net unrealized loss on interest rate swaps used in cash flow hedges	(1,707)		—
Amortization of net unrecognized pension and postretirement income	289		255
Other Comprehensive (Loss) Income	(39,253)		18,445
Total Comprehensive Income	$	33,810	$	44,492
See Notes to Consolidated Financial Statements

7

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (UNAUDITED)

(in thousands, except per-share data)

	Preferred Stock			Common Stock			Additional		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Treasury Stock		Total
	Shares	Amount		Shares	Amount		Paid-in Capital
Three months ended March 31, 2021
Balance at December 31, 2020	200	$	192,878	162,350	$	557,917	$	1,508,117	$	1,120,781	$	65,091	$	(827,956)	$	2,616,828
Net income									73,063						73,063
Other comprehensive income											(39,253)				(39,253)
Common stock issued				167	199		1,082						1,187		2,468
Stock-based compensation awards							1,902								1,902
Preferred stock dividend									(2,591)						(2,591)
Common stock cash dividends - $0.14 per share									(22,762)						(22,762)
Balance at March 31, 2021	200	$	192,878	162,517	$	558,116	$	1,511,101	$	1,168,491	$	25,838	$	(826,769)	$	2,629,655
Three months ended March 31, 2020
Balance at December 31, 2019	—	$	—	164,218	$	556,110	$	1,499,681	$	1,079,391	$	(137)	$	(792,869)	$	2,342,176
Net income									26,047						26,047
Other comprehensive income											18,445				18,445
Common stock issued				125	133		889						979		2,001
Stock-based compensation awards							1,619								1,619
Adjustment for CECL (1)									(43,807)						(43,807)
Acquisition of treasury stock				(2,908)									(39,748)		(39,748)
Common stock cash dividends - $0.13 per share									(20,985)						(20,985)
Balance at March 31, 2020	—	$	—	161,435	$	556,243	$	1,502,189	$	1,040,646	$	18,308	$	(831,638)	$	2,285,748
See Notes to Consolidated Financial Statements

(1) The Corporation adopted ASU 2016-13 "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses of Financial Instruments on January 1, 2020. See Note 1, "Basis of Presentation" to the Consolidated Financial Statements for further details.

8

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

(in thousands)	Three months ended March 31
	2021		2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$	73,063	$	26,047
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	(5,500)		44,030
Depreciation and amortization of premises and equipment	6,870		7,161
Amortization of TCI	6,935		7,619
Net amortization of investment securities premiums	3,716		2,707
Investment securities gains, net	(33,475)		(46)
Gain on sales of mortgage loans held for sale	(8,656)		(6,181)
Proceeds from sales of mortgage loans held for sale	294,478		195,649
Originations of mortgage loans held for sale	(236,028)		(192,285)
Intangible amortization	115		132
Amortization of issuance costs and discounts on long-term borrowings	1,146		250
Debt extinguishment costs	32,163		—
Stock-based compensation	1,902		1,619
Other changes, net	66,683		(133,579)
Total adjustments	130,349		(72,924)
Net cash provided by (used in) operating activities	203,412		(46,877)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of AFS securities	59,342		59,894
Proceeds from principal repayments and maturities of AFS securities	134,684		61,408
Proceeds from principal repayments and maturities of HTM securities	29,066		19,758
Purchase of AFS securities	(304,493)		(390,936)
Purchase of HTM securities	(227,687)		—
Sale of Visa Shares	33,962		—
Sale (purchase) of FRB and FHLB stock	25,920		(21,567)
Net increase in loans	(96,347)		(250,993)
Net purchases of premises and equipment	(4,425)		(4,023)
Net change in tax credit investments	(977)		(128)
Net cash used in investing activities	(350,955)		(526,587)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand and savings deposits	971,180		(34,866)
Net (decrease) increase in time deposits	(176,549)		5,979
Net (decrease) increase in short-term borrowings	(109,077)		503,567
Proceeds from long-term borrowings	—		496,461
Repayments of long-term borrowings	(703,165)		(13)
Net proceeds from issuance of common stock	2,468		2,001
Dividends paid	(23,270)		(21,348)
Acquisition of treasury stock	—		(39,748)
Net cash (used in) provided by financing activities	(38,413)		912,033
Net (Decrease) Increase in Cash and Cash Equivalents	(185,956)		338,569
Cash and Cash Equivalents at Beginning of Period	1,847,832		517,791
Cash and Cash Equivalents at End of Period	$	1,661,876	$	856,360
Supplemental Disclosures of Cash Flow Information:
Cash paid during the period for:
Interest	$	25,235	$	36,576
Income taxes	477		1,072
Supplemental schedule of certain noncash activities:
Transfer of AFS securities to HTM securities	$	376,165	$	—
See Notes to Consolidated Financial Statements

9

FULTON FINANCIAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 1 – Basis of Presentation

The accompanying unaudited Consolidated Financial Statements of the Corporation have been prepared in conformity with GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities as of the date of the financial statements as well as revenues and expenses during the period. Actual results could differ from those estimates. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. These Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2020. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. The Corporation evaluates subsequent events through the date of filing of this Form 10-Q with the SEC.

CECL Adoption

On January 1, 2020, the Corporation adopted ASU 2016-13, Financial Instruments - Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial Instruments. The Corporation adopted CECL using the modified retrospective method for all financial assets measured at amortized cost, net of investments in leases and OBS credit exposures. The Corporation recorded an increase of $58.3 million to the ACL on January 1, 2020 as a result of the adoption of CECL. Retained earnings decreased $43.8 million and deferred tax assets increased by $12.4 million. Included in the $58.3 million increase to the ACL was $2.1 million for certain OBS credit exposures that was previously recognized in other liabilities before the adoption of CECL.

CARES Act and Consolidated Appropriations Act - 2021

On March 27, 2020 the CARES Act was signed into law. The CARES Act includes an option for financial institutions to suspend the requirements of GAAP for certain loan modifications that would otherwise be categorized as a TDR. Certain conditions must be met with respect to the loan modification including that the modification is related to COVID-19 and the modified loan was not more than 30 days past due on December 31, 2019. On December 27, 2020, the 2021 Consolidated Appropriations Act was signed into law and this Act extended the relief for TDR treatment that was set to expire on December 31, 2020 to the earlier of 60 days after the national emergency termination date or January 1, 2022. The Corporation is applying the option under the CARES act for all loan modifications that qualify.

Recently Adopted Accounting Standards

On January 1, 2021, the Corporation adopted ASC Update 2019-12 Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The Corporation adopted this standards update effective with its March 31, 2021 quarterly report on Form 10-Q and it did not have a material impact on the consolidated financial statements.

On January 1, 2021, the Corporation adopted ASC Update 2021-01 Reference Rate Reform (Topic 848). This update permits entities to apply optional expedients in Topic 848 to derivative instruments modified because of LIBOR transition affected by changes to the interest rates used for discounting, margining or contract price alignment due to reference rate reform. This update was effective upon issuance and entities may elect to apply the guidance to modifications either retrospectively, as of any date from the beginning of any interim period that includes or is subsequent to March 12, 2020, or prospectively to new modifications from any date in an interim period that includes or is subsequent to January 7, 2021. The Corporation adopted this standards update retrospectively effective with its March 31, 2021 quarterly report on Form 10-Q and it did not have a material impact on the consolidated financial statements.

NOTE 2 – Restrictions on Cash and Cash Equivalents

The Bank is required to maintain reserves against its deposit liabilities. Prior to March 2020, reserves were in the form of cash and balances with the FRB. The FRB suspended cash reserve requirements effective March 26, 2020.

10

In addition, cash collateral is posted by the Corporation with counterparties to secure derivative and other contracts. The amounts of such cash collateral as of March 31, 2021 and December 31, 2020 were $243.6 million and $408.1 million, respectively.

NOTE 3 – Investment Securities

The following table presents the amortized cost and estimated fair values of investment securities for the periods presented:

	March 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for Sale	(in thousands)
State and municipal securities	$	953,601	$	42,412	$	(1,253)	$	994,760
Corporate debt securities	348,162		11,970		(761)		359,371
Collateralized mortgage obligations	390,253		10,633		(1,005)		399,881
Residential mortgage-backed securities	257,409		1,941		(3,986)		255,364
Commercial mortgage-backed securities	668,144		12,455		(7,582)		673,017
Auction rate securities	76,350		—		(146)		76,204
Total	$	2,693,919	$	79,411	$	(14,733)	$	2,758,597
Held to Maturity
Residential mortgage-backed securities	$	467,461	$	16,303	$	(8,025)	$	475,739
Commercial mortgage-backed securities	385,952		—		(17,948)		368,004
Total	$	853,413	$	16,303	$	(25,973)	$	843,743

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for Sale	(in thousands)
State and municipal securities	$	891,327	$	61,286	$	—	$	952,613
Corporate debt securities	348,391		19,445		(691)		367,145
Collateralized mortgage obligations	491,321		12,560		(115)		503,766
Residential mortgage-backed securities	373,779		4,246		(27)		377,998
Commercial mortgage-backed securities	741,172		22,384		(1,141)		762,415
Auction rate securities	101,510		—		(3,304)		98,206
Total	$	2,947,500	$	119,921	$	(5,278)	$	3,062,143
Held to Maturity
Residential mortgage-backed securities	$	278,281	$	18,576	$	—	$	296,857

During the first quarter of 2021, the Corporation transferred residential and commercial mortgage backed securities from the AFS classification to the HTM classification. The amortized cost and estimated fair value of the securities transferred were both $376.2 million.

Securities carried at $1.1 billion at March 31, 2021 and $520.5 million at December 31, 2020 were pledged as collateral to secure public and trust deposits and customer repurchase agreements.

11

The amortized cost and estimated fair values of debt securities as of March 31, 2021, by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities as certain investment securities are subject to call or prepayment with or without call or prepayment penalties.

		March 31, 2021
		Available for Sale				Held to Maturity
		Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(in thousands)
Due in one year or less		$	13,107	$	13,171	$	—	$	—
Due from one year to five years		37,176		38,417		—		—
Due from five years to ten years		343,642		355,683		—		—
Due after ten years		984,188		1,023,064		—		—
		1,378,113		1,430,335		—		—
Residential mortgage-backed securities(1)		257,409		255,364		467,461		475,739
Commercial mortgage-backed securities(1)		668,144		673,017		385,952		368,004
Collateralized mortgage obligations(1)		390,253		399,881		—		—
Total		$	2,693,919	$	2,758,597	$	853,413	$	843,743
(1) Mortgage-backed securities and collateralized mortgage obligations do not have stated maturities and are dependent upon the interest rate environment and prepayments on the underlying loans.

The following table presents information related to the gross realized gains and losses on the sales of investment securities for the periods presented:

	Gross Realized Gains		Gross Realized Losses		Net Gains
Three months ended	(in thousands)
March 31, 2021	$	34,016	$	(541)	$	33,475
March 31, 2020	117		(71)		46

During the first quarter of 2021, the Corporation completed a balance sheet restructuring that included a $34.0 million gain on the sale of Visa Shares, offset by net losses on other securities of $400,000, primarily in connection with the sale of $24.6 million of ARCs. In addition, debt extinguishment costs of $32.2 million included in non-interest expense and a write-off of $841,000 in unamortized discounts was recognized in net interest income in connection with the cash tender offer for certain of its outstanding senior and subordinated notes and the prepayment of certain term FHLB advances. See Note 14, "Long-Term Debt" for further details.

12

The following tables present the gross unrealized losses and estimated fair values of investment securities, aggregated by category and length of time that individual securities have been in a continuous unrealized loss position for the periods presented:

	March 31, 2021
	Less than 12 months					12 months or longer					Total
	Number of Securities	Estimated Fair Value		Unrealized Losses		Number of Securities	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Available for Sale		(in thousands)
State and municipal securities	21	$	88,141	$	(1,253)	—	$	—	$	—	$	88,141	$	(1,253)
Corporate debt securities	7	41,956		(582)		2	15,328		(179)		57,284		(761)
Collateralized mortgage obligations	2	55,305		(1,005)		—	—		—		55,305		(1,005)
Residential mortgage-backed securities	8	173,908		(3,986)		—	—		—		173,908		(3,986)
Commercial mortgage-backed securities	10	183,175		(7,582)		—	—		—		183,175		(7,582)
Auction rate securities	—	—		—		118	76,204		(146)		76,204		(146)
Total available for sale	48	$	542,485	$	(14,408)	120	$	91,532	$	(325)	$	634,017	$	(14,733)
Held to Maturity
Residential mortgage-backed securities	12	$	205,072	$	(8,025)	—	$	—	$	—	$	205,072	$	(8,025)
Commercial mortgage-backed securities	21	368,004		(17,948)		—	—		—		368,004		(17,948)
Total	33	$	573,076	$	(25,973)	—	$	—	$	—	$	573,076	$	(25,973)

	December 31, 2020
	Less than 12 months					12 months or longer					Total
	Number of Securities	Estimated Fair Value		Unrealized Losses		Number of Securities	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Available for Sale	(in thousands)
Corporate debt securities	9	$	44,528	$	(377)	1	$	6,871	$	(314)	$	51,399	$	(691)
Collateralized mortgage obligations	3	57,601		(115)		—	—		—		57,601		(115)
Residential mortgage-backed securities	1	20,124		(27)		—	—		—		20,124		(27)
Commercial mortgage-backed securities	9	144,383		(1,141)		—	—		—		144,383		(1,141)
Auction rate securities	—	—		—		162	98,206		(3,304)		98,206		(3,304)
Total available for sale(1)	22	$	266,636	$	(1,660)	163	$	105,077	$	(3,618)	$	371,713	$	(5,278)

(1) No HTM securities were in an unrealized loss position as of December 31, 2020.

The Corporation’s collateralized mortgage obligations and mortgage-backed securities have contractual terms that generally do not permit the issuer to settle the securities at a price less than the amortized cost of the investment. The change in fair value of these securities is attributable to changes in interest rates and not credit quality. The Corporation does not have the intent to sell and does not believe it will more likely than not be required to sell any of these securities prior to a recovery of their fair value to amortized cost. Therefore, the Corporation does not have an ACL for these investments as of March 31, 2021.

Based on management’s evaluations, no ACL was required for municipal securities, corporate debt securities or ARCs as of March 31, 2021. The Corporation does not have the intent to sell and does not believe it will more likely than not be required to sell any of these securities prior to a recovery of their fair value to amortized cost, which may be at maturity.

13

NOTE 4 - Loans and Allowance for Credit Losses

Net Loans are summarized as follows:

	March 31, 2021		December 31, 2020
	(in thousands)
Real estate - commercial mortgage	$	7,142,137	$	7,105,092
Commercial and industrial (1)	5,675,714		5,670,828
Real-estate - residential mortgage	3,254,058		3,141,915
Real-estate - home equity	1,149,958		1,202,913
Real-estate - construction	1,083,494		1,047,218
Consumer	451,857		466,772
Equipment lease financing and other	252,930		284,377
Overdrafts	1,373		4,806
Gross loans	19,011,521		18,923,921
Unearned income	(20,535)		(23,101)
Net Loans	$	18,990,986	$	18,900,820

(1) Includes PPP loans totaling $1.7 billion and $1.6 billion as of March 31, 2021 and December 31, 2020, respectively.

The Corporation segments its loan portfolio by "portfolio segments," as presented in the table above. Certain portfolio segments are further disaggregated by "class segment" for the purpose of estimating credit losses.

Allowance for Credit Losses

The Corporation has elected to exclude accrued interest receivable from the measurement of its ACL. When a loan is placed on non-accrual status, any outstanding accrued interest is reversed against interest income.

Loans: The ACL for loans is an estimate of the expected losses to be realized over the life of the loans in the portfolio. The ACL is determined for two distinct categories of loans: 1) loans evaluated collectively for expected credit losses and 2) loans evaluated individually for expected credit losses.

Loans Evaluated Collectively: Loans evaluated collectively for expected credit losses include loans on accrual status, excluding accruing TDRs, and loans initially evaluated individually, but determined not to have enhanced credit risk characteristics. This category includes loans on non-accrual status and TDRs where the total commitment amount is less than $1 million. The ACL is estimated by applying a PD and LGD to the EAD at the loan level. In order to determine the PD, LGD, and EAD calculation inputs:

•Loans are aggregated into pools based on similar risk characteristics.

•The PD and LGD rates are determined by historical credit loss experience for each pool of loans.

•The loan segment PD rates are estimated using six econometric regression models that use the Corporation’s historical credit loss experience and incorporate reasonable and supportable economic forecasts for various macroeconomic variables that are statistically correlated with expected loss behavior in the loan segment.

•The reasonable and supportable forecast for each macroeconomic variable is sourced from an external third party and is applied over the contractual term of the Corporation’s loan portfolio. The Corporation’s economic forecast considers the general health of the economy, the interest rate environment, real estate pricing and market risk.

•A single baseline forecast scenario is used for each macroeconomic variable.

•The loan segment lifetime LGD rates are estimated using a loss rate approach based on the Corporation’s historical charge-off experience and the balance at the time of loan default.

•The LGD rates are adjusted for the Corporation’s recovery experience.

•To calculate the EAD, the corporation estimates contractual cash flows over the remaining life of each loan. Certain cash flow assumptions are established for each loan using maturity date, amortization schedule and interest rate. In addition, a prepayment rate is used in determining the EAD estimate.

14

Loans Evaluated Individually: Loans evaluated individually for expected credit losses include loans on non-accrual status and TDRs where the commitment amount equals or exceeds $1.0 million. The required ACL for such loans is determined using either the present value of expected future cash flows, observable market price or the fair value of collateral.

Loans evaluated individually may have specific allocations of the ACL assigned if the measured value of the loan using one of the noted techniques is less than its current carrying value. For loans measured using the fair value of collateral, if the analysis determines that sufficient collateral value would be available for repayment of the debt, then no allocations would be assigned to those loans. Collateral could be in the form of real estate or business assets, such as accounts receivable or inventory, in the case of commercial and industrial loans. Commercial and industrial loans may also be secured by real estate.

For loans secured by real estate, estimated fair values are determined primarily through appraisals performed by third-party appraisers, discounted to arrive at expected net sale proceeds. For collateral dependent loans, estimated real estate fair values are also net of estimated selling costs. When a real estate secured loan is impaired, a decision is made regarding whether an updated appraisal of the real estate is necessary. This decision is based on various considerations, including: the age of the most recent appraisal; the loan-to-value ratio based on the original appraisal; the condition of the property; the Corporation’s experience and knowledge of the real estate market; the purpose of the loan; market factors; payment status; the strength of any guarantors; and the existence and age of other indications of value such as broker price opinions, among others. The Corporation generally obtains updated appraisals performed by third-party appraisers for impaired loans secured predominantly by real estate every 12 months.

When updated appraisals are not obtained for loans secured by real estate, fair values are estimated based on the original appraisal values, as long as the original appraisal indicated an acceptable loan-to-value position and there has not been a significant deterioration in the collateral value since the original appraisal was performed.

For loans with principal balances greater than or equal to $1.0 million secured by non-real estate collateral, such as accounts receivable or inventory, estimated fair values are determined based on borrower financial statements, inventory listings, accounts receivable agings or borrowing base certificates. Indications of value from these sources are generally discounted based on the age of the financial information or the quality of the assets. Liquidation or collection discounts are applied to these assets based upon existing loan evaluation policies.

Management regularly reviews loans in the portfolio to assess credit quality indicators and to determine appropriate loan classification. For commercial loans, commercial mortgages and construction loans to commercial borrowers, an internal risk rating process is used. The Corporation believes that internal risk ratings are the most relevant credit quality indicator for these types of loans. The migration of loans through the various internal risk rating categories is a significant component of the ACL methodology for these loans, which bases the PD on this migration. Assigning risk ratings involves judgment. Risk ratings may be changed based on ongoing monitoring procedures, or if specific loan review assessments identify a deterioration or an improvement in the loan.

The ACL is reviewed to evaluate its appropriateness in relation to the overall risk profile of the loan portfolio. The Corporation considers risk factors such as: local and national economic conditions; trends in delinquencies and non-accrual loans; the diversity of borrower industry types; and the composition of the portfolio by loan type.

Qualitative and Other Adjustments to ACL: In addition to the quantitative credit loss estimates for loans evaluated collectively, qualitative factors that may not be fully captured in the quantitative results are also evaluated. These qualitative factors include changes in lending policy, the nature and volume of the portfolio, overall business conditions in the economy, credit concentrations, specific industry risks, competition, model imprecision and legal and regulatory requirements. Qualitative adjustments are judgmental and are based on management’s knowledge of the portfolio and the markets in which the Corporation operates. Qualitative adjustments are evaluated and approved on a quarterly basis. Additionally, the ACL includes other allowance categories that are not directly incorporated in the quantitative results. These categories include but are not limited to loans-in-process, trade acceptances and overdrafts.

OBS Credit Exposures: The ACL for OBS credit exposures is recorded in other liabilities on the consolidated balance sheets. This portion of the ACL represents management’s estimate of expected losses in its unfunded loan commitments and other OBS credit exposures. The ACL specific to unfunded commitments is determined by estimating future draws and applying the expected loss rates on those draws. Future draws are based on historical averages of utilization rates (i.e., the likelihood of draws taken). The ACL for OBS credit exposures is increased or decreased by charges or reductions to expense, through the provision for credit losses.

15

The following table presents the components of the ACL:

	March 31, 2021		December 31, 2020
	(in thousands)
ACL - loans	$	265,986	$	277,567
ACL - OBS credit exposure	14,273		14,373
Total ACL	$	280,259	$	291,940

The following table presents the activity in the ACL:

	Three months ended March 31
	2021		2020
	(in thousands)
Balance at beginning of period	$	291,940	$	166,209
Impact of adopting CECL on January 1, 2020 (1)	—		58,349
Loans charged off	(8,202)		(14,003)
Recoveries of loans previously charged off	2,021		2,887
Net loans charged off	(6,181)		(11,116)
Provision for credit losses (2)	(5,500)		44,029
Balance at end of period	$	280,259	$	257,471

(1) Includes $12.6 million of reserves for OBS credit exposures as of January 1, 2020.

(2) Includes $(100,000) and $3.8 million related to OBS credit exposures for the three months ended March 31, 2021 and 2020, respectively.

The following table presents the activity in the ACL - loans by portfolio segment:

	Real Estate - Commercial Mortgage		Commercial and Industrial		Real Estate - Home Equity		Real Estate - Residential Mortgage		Real Estate  - Construction		Consumer		Equipment lease financing, other and overdrafts		Total
	(in thousands)
Three months ended March 31, 2021
Balance at December 31, 2020	$	103,425	$	74,771	$	14,232	$	51,995	$	15,608	$	10,905	$	6,633	$	277,567
Loans charged off	(1,837)		(4,319)		(212)		(192)		(39)		(635)		(968)		(8,202)
Recoveries of loans previously charged off	174		769		51		95		384		389		159		2,021
Net loans recovered (charged off)	(1,663)		(3,550)		(161)		(97)		345		(246)		(809)		(6,181)
Provision for loan losses (1)	(786)		(27)		(341)		(1,903)		(874)		(1,247)		(222)		(5,400)
Balance at March 31, 2021	$	100,976	$	71,194	$	13,730	$	49,995	$	15,079	$	9,412	$	5,602	$	265,986
Three months ended March 31, 2020
Balance at December 31, 2019	$	45,610	$	68,602	$	17,744	$	19,771	$	4,443	$	3,762	$	3,690	$	163,622
Impact of adopting CECL on January 1, 2020	29,361		(18,576)		(65)		21,235		4,015		5,969		3,784		45,723
Loans charged off	(855)		(10,899)		(316)		(187)		—		(1,213)		(533)		(14,003)
Recoveries of loans previously charged off	244		1,734		646		85		70		—		108		2,887
Net loans (charged off) recovered	(611)		(9,165)		330		(102)		70		(1,213)		(425)		(11,116)
Provision for loan losses (1)	15,959		22,745		(2,756)		1,523		(130)		1,347		1,591		40,279
Balance at March 31, 2020	$	90,319	$	63,606	$	15,253	$	42,427	$	8,398	$	9,865	$	8,640	$	238,508

(1) Provision included in the table only includes the portion related to Net Loans.

Several factors as of the end of the first quarter of 2021 in comparison to the end of the fourth quarter of 2020, including improved economic forecasts and a decrease in specific allocations within the ACL for loans evaluated individually, reduced the level of the ACL determined to be necessary as of March 31, 2021, resulting in the negative provision for credit losses for the three months ended March 31, 2021. The higher provision expense during the first three months of 2020 was largely driven by the overall downturn in economic forecasts due to COVID-19, resulting in higher expected future credit losses under CECL.

16

Qualitative adjustments during the first three months of 2020 increased compared to those at the time of the adoption of CECL on January 1, 2020 primarily as a result of uncertainties related to the economic impact of COVID-19, including consideration for the future performance of loans that received deferrals or forbearances as a result of COVID-19 and the impact COVID-19 had on certain industries where the quantitative models were not fully capturing the appropriate level of risk at that time. PPP loans issued are fully guaranteed by the SBA and, as such, no ACL was recorded against the PPP loan portfolio.

Non-accrual Loans

All loans individually evaluated for impairment are measured for losses on a quarterly basis. As of March 31, 2021 and December 31, 2020, substantially all of the Corporation’s individually evaluated loans with total commitments greater than or equal to $1.0 million were measured based on the estimated fair value of each loan’s collateral, if any. Collateral could be in the form of real estate, in the case of commercial mortgages and construction loans, or business assets, such as accounts receivable or inventory, in the case of commercial and industrial loans. Commercial and industrial loans may also be secured by real estate.

As of March 31, 2021 and December 31, 2020, approximately 97% and 83%, respectively, of loans evaluated individually for impairment with principal balances greater than or equal to $1.0 million, whose primary collateral consisted of real estate, were measured at estimated fair value using appraisals performed by state certified third-party appraisers that had been updated in the preceding 12 months.

The following table presents total non-accrual loans, by class segment:

	March 31, 2021						December 31, 2020
	With a Related Allowance		Without a Related Allowance		Total		With a Related Allowance		Without a Related Allowance		Total
	(in thousands)
Real estate - commercial mortgage	$	21,107	$	30,870	$	51,977	$	19,909	$	31,561	$	51,470
Commercial and industrial	13,012		18,640		31,652		13,937		18,056		31,993
Real estate - residential mortgage	31,203		2,198		33,401		24,590		1,517		26,107
Real estate - home equity	9,368		—		9,368		9,398		190		9,588
Real estate - construction	544		897		1,441		437		958		1,395
Consumer	301		—		301		332		—		332
Equipment lease financing and other	6,462		9,287		15,749		—		16,313		16,313
	$	81,997	$	61,892	$	143,889	$	68,603	$	68,595	$	137,198

As of March 31, 2021 and December 31, 2020, there were $61.9 million and $68.6 million, respectively, of non-accrual loans that did not have a related allowance for credit losses. The estimated fair values of the collateral securing these loans exceeded their carrying amount, or the loans were previously charged down to realizable collateral values. Accordingly, no specific valuation allowance was considered to be necessary.

Asset Quality

Maintaining an appropriate ACL is dependent on various factors, including the ability to identify potential problem loans in a timely manner. For commercial construction, residential construction, commercial and industrial, and commercial real estate, an internal risk rating process is used. The Corporation believes that internal risk ratings are the most relevant credit quality indicator for these types of loans. The migration of loans through the various internal risk rating categories is a significant component of the ACL methodology for these loans, which bases the probability of default on this migration. Assigning risk ratings involves judgment. The Corporation's loan review officers provide a separate assessment of risk rating accuracy. Risk ratings may be changed based on the ongoing monitoring procedures performed by loan officers or credit administration staff or if specific loan review assessments identify a deterioration or an improvement in the loans.

The following is a summary of the Corporation's internal risk rating categories:

•Pass: These loans do not currently pose undue credit risk and can range from the highest to average quality, depending     on the degree of potential risk.

17

•Special Mention: These loans have a heightened credit risk, but not to the point of justifying a classification of Substandard. Loans in this category are currently acceptable but, are nevertheless potentially weak.

•Substandard or Lower: These loans are inadequately protected by current sound worth and paying capacity of the borrower. There exists a well-defined weakness or weaknesses that jeopardize the normal repayment of the debt.

18

The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the current period:

		March 31, 2021
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2021		2020		2019		2018		2017		Prior		Cost Basis		Cost Basis		Total
Real estate - construction(1)
	Pass	$	14,615	$	233,770	$	201,440	$	218,467	$	80,686	$	142,339	$	36,046	$	—	$	927,363
	Special Mention	110		—		—		—		—		13,195		—		—		13,305
	Substandard or Lower	—		—		154		—		1,976		3,520		406		—		6,056
	Total real estate - construction	14,725		233,770		201,594		218,467		82,662		159,054		36,452		—		946,724
Real estate - construction(1)
	Current period gross charge-offs	—		—		(39)		—		—		—		—		—		(39)
	Current period recoveries	—		—		—		—		—		384		—		—		384
	Total net (charge-offs) recoveries	—		—		(39)		—		—		384		—		—		345
Commercial and industrial
	Pass	885,616		1,624,535		481,038		290,788		201,910		726,981		1,205,065		—		5,415,933
	Special Mention	143		9,136		20,949		16,337		10,413		30,861		48,939		—		136,778
	Substandard or Lower	—		2,847		7,167		13,503		10,638		34,805		54,043		—		123,003
	Total commercial and industrial	885,759		1,636,518		509,154		320,628		222,961		792,647		1,308,047		—		5,675,714
Commercial and industrial
	Current period gross charge-offs	—		—		(613)		(2,871)		(60)		(775)		—		—		(4,319)
	Current period recoveries	—		—		37		126		36		570		—		—		769
	Total net (charge-offs) recoveries	—		—		(576)		(2,745)		(24)		(205)		—		—		(3,550)
Real estate - commercial mortgage
	Pass	200,885		993,776		926,352		670,684		767,399		2,800,409		49,207		321		6,409,033
	Special Mention	—		23,282		30,629		92,800		75,417		248,403		2,406		—		472,937
	Substandard or Lower	—		1,028		24,008		10,673		46,460		174,421		3,577		—		260,167
	Total real estate - commercial mortgage	200,885		1,018,086		980,989		774,157		889,276		3,223,233		55,190		321		7,142,137
Real estate - commercial mortgage
	Current period gross charge-offs	—		—		—		—		(1,719)		(118)		—		—		(1,837)
	Current period recoveries	—		—		—		—		—		174		—		—		174
	Total net (charge-offs) recoveries	—		—		—		—		(1,719)		56		—		—		(1,663)
Total
	Pass	$	1,101,116	$	2,852,081	$	1,608,830	$	1,179,939	$	1,049,995	$	3,669,729	$	1,290,318	$	321	$	12,752,329
	Special Mention	253		32,418		51,578		109,137		85,830		292,459		51,345		—		623,020
	Substandard or Lower	—		3,875		31,329		24,176		59,074		212,746		58,026		—		389,226
	Total	$	1,101,369	$	2,888,374	$	1,691,737	$	1,313,252	$	1,194,899	$	4,174,934	$	1,399,689	$	321	$	13,764,575

(1) Excludes real estate - construction - other.

The Corporation does not assign internal risk ratings to smaller balance, homogeneous loans, such as home equity, residential mortgage, construction loans to individuals secured by residential real estate, consumer and equipment lease financing. For these loans, the most relevant credit quality indicator is delinquency status. The migration of loans through the various delinquency status categories is a significant component of the ACL methodology for those loans, which bases the PD on this migration.

19

The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the prior period:

		December 31, 2020
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2020		2019		2018		2017		2016		Prior		Cost Basis		Cost Basis		Total
Real estate - construction(1)
	Pass	$	185,883	$	229,097	$	217,604	$	81,086	$	37,976	$	110,470	$	38,026	$	—	$	900,142
	Special Mention	—		—		—		—		7,047		6,212		—		—		13,259
	Substandard or Lower	—		447		—		2,000		753		1,637		632		—		5,469
	Total real estate - construction	185,883		229,544		217,604		83,086		45,776		118,319		38,658		—		918,870
Real estate - construction(1)
	Current period gross charge-offs	—		—		—		—		—		(17)		—		—		(17)
	Current period recoveries	—		—		—		—		68		5,054		—		—		5,122
	Total net (charge-offs) recoveries	—		—		—		—		68		5,037		—		—		5,105
Commercial and industrial
	Pass	2,283,533		508,541		298,567		214,089		208,549		596,646		1,278,689		—		5,388,614
	Special Mention	6,633		23,834		29,167		10,945		11,506		25,960		45,994		—		154,039
	Substandard or Lower	3,221		5,947		8,434		11,251		11,192		23,852		64,278		—		128,175
	Total commercial and industrial	2,293,387		538,322		336,168		236,285		231,247		646,458		1,388,961		—		5,670,828
Commercial and industrial
	Current period gross charge-offs	—		(114)		(30)		(488)		(393)		(520)		(17,370)		—		(18,915)
	Current period recoveries	—		43		486		216		162		4,531		5,958		—		11,396
	Total net (charge-offs) recoveries	—		(71)		456		(272)		(231)		4,011		(11,412)		—		(7,519)
Real estate - commercial mortgage
	Pass	973,664		917,510		708,946		794,955		783,094		2,213,343		53,041		404		6,444,957
	Special Mention	13,639		40,874		84,047		80,705		89,112		167,424		2,364		—		478,165
	Substandard or Lower	1,238		6,681		6,247		39,027		22,605		103,007		2,225		940		181,970
	Total real estate - commercial mortgage	988,541		965,065		799,240		914,687		894,811		2,483,774		57,630		1,344		7,105,092
Real estate - commercial mortgage
	Current period gross charge-offs	(60)		(21)		(36)		(2,515)		(29)		(1,547)		(17)		—		(4,225)
	Current period recoveries	—		6		—		—		1		1,020		—		—		1,027
	Total net (charge-offs) recoveries	(60)		(15)		(36)		(2,515)		(28)		(527)		(17)		—		(3,198)
Total
	Pass	$	3,443,080	$	1,655,148	$	1,225,117	$	1,090,130	$	1,029,619	$	2,920,459	$	1,369,756	$	404	$	12,733,713
	Special Mention	20,272		64,708		113,214		91,650		107,665		199,596		48,358		—		645,463
	Substandard or Lower	4,459		13,075		14,681		52,278		34,550		128,496		67,135		940		315,614
	Total	$	3,467,811	$	1,732,931	$	1,353,012	$	1,234,058	$	1,171,834	$	3,248,551	$	1,485,249	$	1,344	$	13,694,790

(1) Excludes real estate - construction - other.

20

The Corporation considers the performance of the loan portfolio and its impact on the ACL. For certain loan classes, the Corporation evaluates credit quality based on the aging status of the loan. The following tables present the amortized cost of these loans based on payment activity, by origination year, for the periods shown:

		March 31, 2021
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2021		2020		2019		2018		2017		Prior		Cost Basis		Cost Basis		Total
Real estate - home equity
	Performing	$	4,491	$	29,767	$	8,140	$	12,312	$	9,997	$	119,037	$	948,645	$	4,845	$	1,137,234
	Nonperforming	—		—		88		23		264		2,597		9,545		207		12,724
	Total real estate - home equity	4,491		29,767		8,228		12,335		10,261		121,634		958,190		5,052		1,149,958
Real estate - home equity
	Current period gross charge-offs	—		—		—		—		—		—		(212)		—		(212)
	Current period recoveries	—		—		—		—		—		—		51		—		51
	Total net (charge-offs) recoveries	—		—		—		—		—		—		(161)		—		(161)
Real estate - residential mortgage
	Performing	358,906		1,240,446		513,892		181,509		292,014		630,996		—		—		3,217,763
	Nonperforming	—		3,927		1,654		3,450		2,945		24,319		—		—		36,295
	Total real estate - residential mortgage	358,906		1,244,373		515,546		184,959		294,959		655,315		—		—		3,254,058
Real estate - residential mortgage
	Current period gross charge-offs	—		—		(40)		(47)		—		(105)		—		—		(192)
	Current period recoveries	—		—		—		3		1		—		92		—		96
	Total net (charge-offs) recoveries	—		—		(40)		(44)		1		(105)		92		—		(96)
Consumer
	Performing	27,910		103,924		90,185		85,837		38,190		56,885		48,371		—		451,302
	Nonperforming	—		127		37		63		35		243		50		—		555
	Total consumer	27,910		104,051		90,222		85,900		38,225		57,128		48,421		—		451,857
Consumer
	Current period gross charge-offs	—		(95)		(94)		(111)		(79)		(229)		(27)		—		(635)
	Current period recoveries	—		33		5		11		19		321		—		—		389
	Total net (charge-offs) recoveries	—		(62)		(89)		(100)		(60)		92		(27)		—		(246)
Equipment lease financing and other
	Performing	25,663		68,641		51,804		36,350		22,506		13,054		—		—		218,018
	Nonperforming	—		—		—		—		15,724		26		—		—		15,750
	Total leasing and other	25,663		68,641		51,804		36,350		38,230		13,080		—		—		233,768
Equipment lease financing and other
	Current period gross charge-offs	—		(968)		—		—		—		—		—		—		(968)
	Current period recoveries	—		120		39		—		—		—		—		—		159
	Total net (charge-offs) recoveries	—		(848)		39		—		—		—		—		—		(809)
Construction - other
	Performing	17,458		97,829		16,172		4,755		—		16		—		—		136,230
	Nonperforming	—		—		364		—		176		—		—		—		540
	Total construction - other	17,458		97,829		16,536		4,755		176		16		—		—		136,770
Construction - other
	Current period gross charge-offs	—		—		—		—		—		—		—		—		—
	Current period recoveries	—		—		—		—		—		—		—		—		—
	Total net (charge-offs) recoveries	—		—		—		—		—		—		—		—		—
Total
	Performing	$	434,428	$	1,540,607	$	680,193	$	320,763	$	362,707	$	819,988	$	997,016	$	4,845	$	5,160,547
	Nonperforming	—		4,054		2,143		3,536		19,144		27,185		9,595		207		65,864
	Total	$	434,428	$	1,544,661	$	682,336	$	324,299	$	381,851	$	847,173	$	1,006,611	$	5,052	$	5,226,411

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		December 31, 2020
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2020		2019		2018		2017		2016		Prior		Cost Basis		Cost Basis		Total
Real estate - home equity
	Performing	$	31,445	$	8,176	$	13,906	$	11,024	$	11,667	$	126,749	$	982,285	$	5,321	$	1,190,573
	Nonperforming	—		88		23		233		221		2,290		9,485		—		12,340
	Total real estate - home equity	31,445		8,264		13,929		11,257		11,888		129,039		991,770		5,321		1,202,913
Real estate - home equity
	Current period gross charge-offs	—		—		—		—		—		(34)		(1,159)		—		(1,193)
	Current period recoveries	—		—		—		—		—		138		366		—		504
	Total net (charge-offs) recoveries	—		—		—		—		—		104		(793)		—		(689)
Real estate - residential mortgage
	Performing	1,255,532		585,878		228,398		341,563		264,990		434,889		—		—		3,111,250
	Nonperforming	217		2,483		3,177		2,483		722		21,583		—		—		30,665
	Total real estate - residential mortgage	1,255,749		588,361		231,575		344,046		265,712		456,472		—		—		3,141,915
Real estate - residential mortgage
	Current period gross charge-offs	—		(68)		(101)		(190)		(7)		(254)		—		—		(620)
	Current period recoveries	—		68		16		1		1		405		—		—		491
	Total net (charge-offs) recoveries	—		—		(85)		(189)		(6)		151		—		—		(129)
Consumer
	Performing	114,399		98,587		95,072		43,334		25,804		36,086		52,698		42		466,022
	Nonperforming	168		19		124		141		114		150		34		—		750
	Total consumer	114,567		98,606		95,196		43,475		25,918		36,236		52,732		42		466,772
Consumer
	Current period gross charge-offs	(134)		(542)		(524)		(444)		(489)		(769)		(498)		—		(3,400)
	Current period recoveries	—		64		165		159		94		101		1,292		—		1,875
	Total net (charge-offs) recoveries	(134)		(478)		(359)		(285)		(395)		(668)		794		—		(1,525)
Equipment lease financing and other
	Performing	102,324		65,303		49,453		34,995		15,631		5,040		—		—		272,746
	Nonperforming	—		—		30		15,983		142		282		—		—		16,437
	Total leasing and other	102,324		65,303		49,483		50,978		15,773		5,322		—		—		289,183
Equipment lease financing and other
	Current period gross charge-offs	(606)		(1,581)		—		—		—		—		—		—		(2,187)
	Current period recoveries	185		349		21		18		11		21		—		—		605
	Total net (charge-offs) recoveries	(421)		(1,232)		21		18		11		21		—		—		(1,582)
Construction - other
	Performing	96,444		24,888		6,822		—		16		—		—		—		128,170
	Nonperforming	—		—		—		178		—		—		—		—		178
	Total construction - other	96,444		24,888		6,822		178		16		—		—		—		128,348
Construction - other
	Current period gross charge-offs	—		—		—		—		—		—		—		—		—
	Current period recoveries	—		—		—		—		—		—		—		—		—
	Total net (charge-offs) recoveries	—		—		—		—		—		—		—		—		—
Total
	Performing	$	1,600,144	$	782,832	$	393,651	$	430,916	$	318,108	$	602,764	$	1,034,983	$	5,363	$	5,168,761
	Nonperforming	385		2,590		3,354		19,018		1,199		24,305		9,519		—		60,370
	Total	$	1,600,529	$	785,422	$	397,005	$	449,934	$	319,307	$	627,069	$	1,044,502	$	5,363	$	5,229,131

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The following table presents non-performing assets:

	March 31, 2021		December 31, 2020
	(in thousands)
Non-accrual loans	$	143,889	$	137,198
Loans 90 days or more past due and still accruing	8,559		9,929
Total non-performing loans	152,448		147,127
OREO (1)	3,664		4,178
Total non-performing assets	$	156,112	$	151,305

(1) Excludes $7.6 million and $8.1 million of residential mortgage properties for which formal foreclosure proceedings were in process as of March 31, 2021 and December 31, 2020, respectively.

The following tables present the aging of the amortized cost basis of loans, by class segment:

	30-59		60-89		≥ 90 Days
	Days Past		Days Past		Past Due		Non-
	Due		Due		and Accruing		Accrual		Current		Total
	(in thousands)
March 31, 2021
Real estate – commercial mortgage	$	9,596	$	1,516	$	2,187	$	51,977	$	7,076,861	$	7,142,137
Commercial and industrial	1,718		1,894		219		31,652		5,640,231		5,675,714
Real estate – residential mortgage	8,485		933		2,750		33,401		3,208,489		3,254,058
Real estate – home equity	2,795		1,062		3,148		9,368		1,133,585		1,149,958
Real estate – construction	170		—		—		1,441		1,081,883		1,083,494
Consumer	1,224		491		255		301		449,586		451,857
Equipment lease financing and other	101		142		—		15,749		217,776		233,768
Total	$	24,089	$	6,038	$	8,559	$	143,889	$	18,808,411	$	18,990,986

	30-59 Days Past Due		60-89 Days Past Due		≥ 90 Days Past Due and Accruing		Non- accrual		Current		Total
	(in thousands)
December 31, 2020
Real estate – commercial mortgage	$	14,999	$	9,273	$	1,177	$	51,470	$	7,028,173	$	7,105,092
Commercial and industrial	11,285		1,068		616		31,993		5,625,866		5,670,828
Real estate – residential mortgage	22,281		7,675		4,687		26,107		3,081,165		3,141,915
Real estate – home equity	5,622		1,654		2,753		9,588		1,183,296		1,202,913
Real estate – construction	1,938		—		155		1,395		1,043,730		1,047,218
Consumer	3,036		501		417		332		462,486		466,772
Equipment lease financing and other	838		150		124		16,313		248,657		266,082
Total	$	59,999	$	20,321	$	9,929	$	137,198	$	18,673,373	$	18,900,820

Collateral-Dependent Loans

A financial asset is considered to be collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. For all classes of financial assets deemed collateral-dependent, the Corporation elected the practical expedient to estimate expected credit losses based on the collateral’s fair value less cost to sell. In most cases, the Corporation records a partial charge-off to reduce the loan’s carrying value to the collateral’s fair value less cost to sell. Substantially all of the collateral supporting collateral-dependent financial assets consists

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of various types of real estate, including residential properties, commercial properties, such as retail centers, office buildings, and lodging, agriculture land, and vacant land.

Troubled Debt Restructurings

The following table presents TDRs, by class segment:

	March 31, 2021		December 31, 2020
	(in thousands)
Real estate - commercial mortgage	$	27,961	$	28,451
Commercial and industrial	7,041		6,982
Real estate - residential mortgage	18,214		18,602
Real estate - home equity	13,674		14,391
Real estate - construction	154		—
Consumer	5		—
Total accruing TDRs	67,049		68,426
Non-accrual TDRs (1)	44,986		35,755
Total TDRs	$	112,035	$	104,181

(1)Included in non-accrual loans in the preceding table detailing non-performing assets.

The following table presents TDRs, by class segment, for loans that were modified during the three months ended March 31, 2021 and 2020:

	Three months ended March 31
	2021			2020
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
	(dollars in thousands)
Commercial and industrial	4	$	1,894	1	$	74
Real estate - commercial mortgage	2	4,162		1	392
Real estate - residential mortgage	23	7,626		7	660
Real estate - home equity	5	148		8	577
Real estate - construction	1	154		—	—
Total	35	$	13,984	17	$	1,703

Restructured loan modifications may include payment schedule modifications, interest rate concessions, bankruptcies, principal reduction or some combination of these concessions. The restructured loan modifications primarily included maturity date extensions, rate modifications and payment schedule modifications.

In accordance with regulatory guidance, payment schedule modifications granted after March 13, 2020 to borrowers impacted by the effects of the COVID-19 pandemic and who were not delinquent at the time of the payment schedule modifications have been excluded from TDRs. As of March 31, 2021 and 2020, payment schedule modifications having a recorded investment of $3.6 billion and $1.0 billion, respectively, were excluded from TDRs based on this regulatory guidance.

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NOTE 5 – Mortgage Servicing Rights

The following table summarizes the changes in MSRs, which are included in other assets on the consolidated balance sheets:

	Three months ended March 31
	2021		2020
	(in thousands)
Amortized cost:
Balance at beginning of period	$	38,745	$	39,267
Originations of MSRs	2,811		1,478
Amortization	(3,753)		(1,891)
Balance at end of period	$	37,803	$	38,854
Valuation allowance:
Balance at beginning of period	$	(10,500)	$	—
Reduction (addition) to valuation allowance	6,100		(1,100)
Balance at end of period	$	(4,400)	$	(1,100)
Net MSRs at end of period	$	33,403	$	37,754

MSRs represent the economic value of contractual rights to service mortgage loans that have been sold. The total portfolio of mortgage loans serviced by the Corporation for unrelated third parties was $4.6 billion and $4.7 billion as of March 31, 2021 and December 31, 2020, respectively. Actual and expected prepayments of the underlying mortgage loans can impact the fair values of the MSRs. The Corporation accounts for MSRs at the lower of amortized cost or fair value.

The fair value of MSRs is estimated by discounting the estimated cash flows from servicing income, net of expense, over the expected life of the underlying loans at a discount rate commensurate with the risk associated with these assets. Expected life is based on the contractual terms of the loans, as adjusted for prepayment projections. The fair values of MSRs were $33.4 million and $28.2 million at March 31, 2021 and December 31, 2020, respectively. Based on its fair value analysis as of March 31, 2021, the Corporation determined that a $6.1 million reduction to the valuation allowance was required for the three months ended March 31, 2021, resulting in a total valuation allowance of $4.4 million as of March 31, 2021. The decrease to the valuation allowance was recorded as an increase to mortgage banking income on the consolidated statements of income for the three months ended March 31, 2021.

NOTE 6 – Derivative Financial Instruments

The Corporation manages its exposure to certain interest rate and foreign currency risks through the use of derivatives. Certain of the Corporation's outstanding derivative contracts are designated as hedges, and none are entered into for speculative purposes. The Corporation does enter into derivative contracts that are intended to economically hedge certain of its risks, even if hedge accounting does not apply or the Corporation elects not to apply hedge accounting.

The Corporation records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Corporation has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. For derivatives where hedge accounting is applied, changes in fair value are recognized in other comprehensive income. For derivatives where hedge accounting does not apply, changes in fair value are recognized in earnings as components of interest income, non-interest income or non-interest expense on the consolidated statements of income.

Derivative contracts create counterparty credit risk with both the Corporation's customers and with institutional derivative counterparties. The Corporation manages counterparty credit risk through its credit approval processes, monitoring procedures

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and obtaining adequate collateral, when the Corporation determines it is appropriate to do so and in accordance with counterparty contracts.

For each of the derivatives, gross derivative assets and liabilities are recorded in other assets and other liabilities, respectively, on the consolidated balance sheets. Related gains and losses on these derivative instruments are recorded in other changes, net on the consolidated statement of cash flows.

Mortgage Banking Derivatives

In connection with its mortgage banking activities, the Corporation enters into commitments to originate certain fixed-rate residential mortgage loans for customers, also referred to as interest rate locks. In addition, the Corporation enters into forward commitments for the future sales or purchases of mortgage-backed securities to or from third-party counterparties to hedge the effect of changes in interest rates on the values of both the interest rate locks and mortgage loans held for sale. Forward sales commitments may also be in the form of commitments to sell individual mortgage loans at a fixed price at a future date. The amount necessary to settle each interest rate lock is based on the price that secondary market investors would pay for loans with similar characteristics, including interest rate and term, as of the date fair value is measured.

Interest Rate Swaps - Non-Designated Hedges

The Corporation enters into interest rate swaps with certain qualifying commercial loan customers to meet their interest rate risk management needs. The Corporation simultaneously enters into interest rate swaps with dealer counterparties, with identical notional amounts and terms. The net result of these interest rate swaps is that the customer pays a fixed rate of interest and the Corporation receives a floating rate. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings. The Corporation’s existing credit derivatives result from participations in interest rate swaps provided by external lenders as part of loan participation arrangements, therefore, are not used to manage interest rate risk in the Corporation’s assets or liabilities. Derivatives not designated as hedges are not speculative and result from a service the Corporation provides to certain lenders which participate in loans. The Corporation is required to clear all eligible interest rate swap contracts with a clearing agent and is subject to the regulations of the Commodity Futures Trading Commission.

Cash Flow Hedges of Interest Rate Risk

The Corporation’s objectives in using interest rate derivatives are to reduce volatility in net interest income and to manage its exposure to interest rate movements. To accomplish this objective, the Corporation primarily uses interest rate swaps as part of its interest rate risk management strategy. During the first quarter of 2021, the Corporation entered into interest rate swaps designated as cash flow hedges to hedge the variable cash flows associated with existing floating rate loans. These hedge contracts involve the receipt of fixed-rate amounts from a counterparty in exchange for the Corporation making floating-rate payments over the life of the agreements without exchange of the underlying notional amount.

For derivatives designated and that qualify as cash flow hedges of interest rate risk, the unrealized gain or loss on the derivative is recorded in AOCI and subsequently reclassified into interest income in the same period during which the hedged transaction affects earnings. Amounts reported in AOCI related to derivatives will be reclassified to interest income as interest payments are made on the Corporation’s variable-rate liabilities. During the next twelve months, the Corporation estimates that an additional $3.4 million will be reclassified as an increase to interest income.

Foreign Exchange Contracts

The Corporation enters into foreign exchange contracts to accommodate the needs of its customers. Foreign exchange contracts are commitments to buy or sell foreign currency on a specific date at a contractual price. The Corporation limits its foreign exchange exposure with customers by entering into contracts with institutional counterparties to mitigate its foreign exchange risk. The Corporation also holds certain amounts of foreign currency with international correspondent banks ("Foreign Currency Nostro Accounts"). The Corporation limits the total overnight net foreign currency open positions, which is defined as an aggregate of all outstanding contracts and Foreign Currency Nostro Account balances, to $500,000.

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The following table presents a summary of the notional amounts and fair values of derivative financial instruments:

	March 31, 2021				December 31, 2020
	Notional Amount		Asset (Liability) Fair Value		Notional Amount		Asset (Liability) Fair Value
	(in thousands)
Interest Rate Locks with Customers
Positive fair values	$	274,909	$	2,198	$	382,903	$	8,034
Negative fair values	40,007		(316)		3,154		(35)
Forward Commitments
Positive fair values	91,264		4,650		—		—
Negative fair values	—		—		292,262		(2,263)
Interest Rate Swaps with Customers
Positive fair values	3,169,658		179,934		3,834,062		330,951
Negative fair values	769,300		(9,721)		45,640		(2)
Interest Rate Swaps with Dealer Counterparties
Positive fair values	769,300		9,721		45,640		2
Negative fair values	3,169,658		(98,368)		3,834,062		(165,205)
Interest Rate Swaps used in Cash Flow Hedges
Positive fair values	—		305		—		—
Negative fair values	500,000		(492)		—		—
Foreign Exchange Contracts with Customers
Positive fair values	12,196		280		1,121		5
Negative fair values	552		(14)		5,963		(275)
Foreign Exchange Contracts with Correspondent Banks
Positive fair values	2,821		43		6,372		318
Negative fair values	12,213		(258)		1,422		(5)

The following table presents the effect of fair value and cash flow hedge accounting on accumulated other comprehensive income for the three months ended March 31, 2021:

	Amount of Loss Recognized in OCI on Derivative		Amount of Loss Recognized in OCI Included Component		Amount of Gain or (Loss) Recognized in OCI Excluded Component		Location of Gain or (Loss) Recognized from AOCI into Income	Amount of Gain Reclassified from AOCI into Income		Amount of Gain Reclassified from AOCI into Income Included Component		Amount of Gain or (Loss) Reclassified from AOCI into Income Excluded Component
	(in thousands)
Derivatives in Cash Flow Hedging Relationships:
Interest Rate Products	$	(2,065)	$	(2,065)	$	—	Interest Income	$	144	$	144	$	—

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The following table presents the effect of fair value and cash flow hedge accounting on the consolidated statements of income for the three months ended March 31, 2021:

	Consolidated Statements of Income Classification
	Interest Income
Total amounts of income line items presented in the consolidated statements of income in which the effects of fair value or cash flow hedges are recorded	$	144
The effects of fair value and cash flow hedging:
Gain or (loss) on cash flow hedging relationships	—
Interest contracts:
Amount of gain reclassified from AOCI into income	144
Amount of gain or (loss) reclassified from AOCI into income as a result that a forecasted transaction is no longer probable of occurring	—
Amount of Gain Reclassified from AOCI into Income - Included Component	144
Amount of Gain or (Loss) Reclassified from AOCI into Income - Excluded Component	—

The following table presents a summary of the fair value gains (losses) on derivative financial instruments:

	Consolidated Statements of Income Classification	Three months ended March 31
		2021		2020
		(in thousands)
Mortgage banking derivatives (1)	Mortgage banking income	$	796	$	1,040
Interest rate swaps	Other expense	(104)		72
Foreign exchange contracts	Other income	8		119
Net fair value gains on derivative financial instruments		$	700	$	1,231

(1) Includes interest rate locks with customers and forward commitments.

Fair Value Option

The Corporation has elected to measure mortgage loans held for sale at fair value. The following table presents a summary of mortgage loans held for sale and the impact of the fair value election on the consolidated financial statements as of the periods shown:

	March 31, 2021		December 31, 2020
	(in thousands)
Amortized cost (1)	$	33,801	$	80,662
Fair value	34,092		83,886

(1) Cost basis of mortgage loans held for sale represents the unpaid principal balance.

Losses related to changes in fair values of mortgage loans held for sale were $2.9 million for the three months ended March 31, 2021 compared to gains of $733,000 for the three months ended March 31, 2020.

Balance Sheet Offsetting

Although certain financial assets and liabilities may be eligible for offset on the consolidated balance sheets because they are subject to master netting arrangements or similar agreements, the Corporation elects to not offset such qualifying assets and liabilities.

The Corporation is a party to interest rate swaps with financial institution counterparties and customers. Under these agreements, the Corporation has the right to net-settle multiple contracts with the same counterparty in the event of default on,

28

or termination of, any one contract. Cash collateral is posted by the party with a net liability position in accordance with contract thresholds and can be used to settle the fair value of the interest rate swap agreements in the event of default. A daily settlement occurs through a clearing agent for changes in the fair value of centrally cleared derivatives. Not all of the derivatives are required to be cleared daily through a clearing agent. As a result, the total fair values of interest rate swap derivative assets and liabilities recognized on the consolidated balance sheet are not equal and offsetting.

The Corporation is also a party to foreign currency exchange contracts with financial institution counterparties, under which the Corporation has the right to net-settle multiple contracts with the same counterparty in the event of default on, or termination of, any one contract. As with interest rate swaps, collateral is posted by the party with a net liability position in accordance with contract thresholds and can be used to settle the fair value of the foreign currency exchange contracts in the event of default.

The Corporation also enters into agreements with customers in which it sells securities subject to an obligation to repurchase the same or similar securities, referred to as repurchase agreements. Under these agreements, the Corporation may transfer legal control over the assets but still maintain effective control through agreements that both entitle and obligate the Corporation to repurchase the assets. Therefore, repurchase agreements are reported as secured borrowings, classified in short-term borrowings on the consolidated balance sheets, while the securities underlying the repurchase agreements remain classified with AFS investment securities on the consolidated balance sheets. The Corporation has no intention of setting off these amounts, therefore, these repurchase agreements are not eligible for offset.

As of March 31, 2021, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $492,000. As of March 31, 2021, the Company has minimum collateral posting thresholds with certain of its derivative counterparties and has posted collateral of $143.1 million. If the Company had breached any of these provisions at March 31, 2021, it could have been required to settle its obligations under the agreements at their termination value of $492,000.

The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets:

	Gross Amounts		Gross Amounts Not Offset
	Recognized		on the Consolidated
	on the		Balance Sheets
	Consolidated		Financial		Cash		Net
	Balance Sheets		Instruments(1)		Collateral (2)		Amount
	(in thousands)
March 31, 2021
Interest rate swap derivative assets	$	189,960	$	(11,779)	$	—	$	178,181
Foreign exchange derivative assets with correspondent banks	43		(43)		—		—
Total	$	190,003	$	(11,822)	$	—	$	178,181
Interest rate swap derivative liabilities	$	108,581	$	(11,779)	$	(96,802)	$	—
Foreign exchange derivative liabilities with correspondent banks	258		(43)		—		215
Total	$	108,839	$	(11,822)	$	(96,802)	$	215
December 31, 2020
Interest rate swap derivative assets	$	330,951	$	(2)	$	—	$	330,949
Foreign exchange derivative assets with correspondent banks	318		(5)		—		313
Total	$	331,269	$	(7)	$	—	$	331,262
Interest rate swap derivative liabilities	$	165,205	$	(2)	$	(165,203)	$	—
Foreign exchange derivative liabilities with correspondent banks	5		(5)		—		—
Total	$	165,210	$	(7)	$	(165,203)	$	—

(1)For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default.

(2)Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate swap transactions and foreign exchange contracts with financial institution counterparties. Interest rate swaps with customers are collateralized by the same collateral securing the underlying loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.

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NOTE 7 – Tax Credit Investments

TCIs are primarily for investments promoting qualified affordable housing projects and investments in community development entities. Investments in these projects generate a return primarily through the realization of federal income tax credits and deductions for operating losses over a specified time period.

The TCIs are included in other assets, with any unfunded equity commitments recorded in other liabilities on the consolidated balance sheets. Certain TCIs qualify for the proportional amortization method and are amortized over the period the Corporation expects to receive the tax credits, with the expense included within income taxes on the consolidated statements of income. Other TCIs are accounted for under the equity method of accounting, with amortization included within non-interest expense on the consolidated statements of income. This amortization includes equity in partnership losses and the systematic write-down of investments over the period in which income tax credits are earned. All of the TCIs are evaluated for impairment at the end of each reporting period.

The following table presents the balances of the Corporation's TCIs and related unfunded commitments:

		March 31,		December 31,
		2021		2020
Included in other assets:		(in thousands)
Affordable housing tax credit investment, net		$	145,888	$	152,203
Other tax credit investments, net		58,782		59,224
	Total TCIs, net	$	204,670	$	211,427
Included in other liabilities:
Unfunded affordable housing tax credit commitments		$	30,762	$	31,562
Other tax credit liabilities		49,491		49,491
	Total unfunded tax credit commitments and liabilities	$	80,253	$	81,053

The following table presents other information relating to the Corporation's TCIs:

		Three months ended
		March 31
		2021		2020
Components of income taxes:		(in thousands)
Affordable housing tax credits and other tax benefits		$	(6,488)	$	(7,194)
Other tax credit investment credits and tax benefits		(723)		(941)
Amortization of affordable housing investments, net of tax benefit		4,366		5,024
Deferred tax expense		160		208
	Total net reduction in income tax expense	$	(2,685)	$	(2,903)
Amortization of TCIs:
Affordable housing tax credits investment		$	986	$	1,022
Other tax credit investment amortization		545		428
	Total amortization of TCIs	$	1,531	$	1,450

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NOTE 8 – Accumulated Other Comprehensive Income

The following table presents changes in OCI:

	Before-Tax Amount		Tax Effect		Net of Tax Amount
Three months ended March 31, 2021	(in thousands)
Unrealized loss on securities	$	(51,751)	$	11,753	$	(39,999)
Reclassification adjustment for securities gains included in net income (1)	487		(110)		377
Amortization of net unrealized losses on AFS securities transferred to HTM (2)	2,312		(525)		1,787
Net unrealized loss on interest rate swaps used in cash flow hedges (3)	(2,209)		502		(1,707)
Amortization of net unrecognized pension and postretirement items (4)	370		(81)		289
Total OCI	$	(50,791)	$	11,538	$	(39,253)
Three months ended March 31, 2020
Unrealized gain on securities	$	22,380	$	(4,949)	$	17,431
Reclassification adjustment for securities gains included in net income (1)	(46)		10		(36)
Amortization of net unrealized losses on AFS securities transferred to HTM (2)	1,022		(227)		795
Amortization of net unrecognized pension and postretirement items (4)	328		(73)		255
Total OCI	$	23,684	$	(5,239)	$	18,445

(1)    Amounts reclassified out of AOCI. Before-tax amounts included in "Investment securities gains, net" on the Consolidated Statements of Income. See Note 3, "Investment Securities," for additional details.

(2)    Amounts reclassified out of AOCI. Before-tax amounts included as a reduction to "Interest Income" on the Consolidated Statements of Income.

(3)    Amounts reclassified out of AOCI. Before-tax amounts included in "Interest Income" on the Consolidated Statements of Income.

(4)    Amounts reclassified out of AOCI. Before-tax amounts included in "Salaries and employee benefits" on the Consolidated Statements of Income. See Note 12, "Employee Benefit Plans," for additional details.

The following table presents changes in each component of accumulated other comprehensive income (loss), net of tax:

	Unrealized Gains (Losses) on Investment Securities		Net Unrealized (Loss) on Interest Rate Swaps used in Cash Flow Hedges		Unrecognized Pension and Postretirement Plan Income (Costs)		Total
	(in thousands)
Three months ended March 31, 2021
Balance at December 31, 2020	$	81,604	$	—	$	(16,513)	$	65,091
OCI before reclassifications	(39,999)		—		—		(39,999)
Amounts reclassified from AOCI	377		(1,707)		289		(1,042)
Amortization of net unrealized losses on AFS securities transferred to HTM	1,787		—		—		1,787
Balance at March 31, 2021	$	43,769	$	(1,707)	$	(16,224)	$	25,838
Three months ended March 31, 2020
Balance at December 31, 2019	$	14,864	$	—	$	(15,001)	$	(137)
OCI before reclassifications	17,431		—		—		17,431
Amounts reclassified from AOCI	(36)		—		255		219
Amortization of net unrealized losses on AFS securities transferred to HTM	795		—		—		795
Balance at March 31, 2020	$	33,054	$	—	$	(14,746)	$	18,308

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NOTE 9 – Fair Value Measurements

FASB ASC Topic 820 establishes a fair value hierarchy for the inputs to valuation techniques used to measure assets and liabilities at fair value using the following three categories (from highest to lowest priority):

•Level 1 – Inputs that represent quoted prices for identical instruments in active markets.

•Level 2 – Inputs that represent quoted prices for similar instruments in active markets, or quoted prices for identical instruments in non-active markets. Also includes valuation techniques whose inputs are derived principally from observable market data other than quoted prices, such as interest rates or other market-corroborated means.

•Level 3 – Inputs that are largely unobservable, as little or no market data exists for the instrument being valued.

All assets and liabilities measured at fair value on both a recurring and nonrecurring basis, have been categorized into the above three levels. The following tables present assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets:

	March 31, 2021
	Level 1		Level 2		Level 3		Total
	(in thousands)
Loans held for sale	$	—	$	34,092	$	—	$	34,092
Available for sale investment securities:
State and municipal securities	—		994,760		—		994,760
Corporate debt securities	—		359,371		—		359,371
Collateralized mortgage obligations	—		399,881		—		399,881
Residential mortgage-backed securities	—		255,364		—		255,364
Commercial mortgage-backed securities	—		673,017		—		673,017
Auction rate securities	—		—		76,204		76,204
Total available for sale investment securities	—		2,682,393		76,204		2,758,597
Other assets:
Investments held in Rabbi Trust	25,374		—		—		25,374
Derivative assets	323		196,808		—		197,131
Total assets	$	25,697	$	2,913,293	$	76,204	$	3,015,194
Other liabilities:
Deferred compensation liabilities	$	25,374	$	—	$	—	$	25,374
Derivative liabilities	272		108,897		—		109,169
Total liabilities	$	25,646	$	108,897	$	—	$	134,543

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	December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in thousands)
Loans held for sale	$	—	$	83,886	$	—	$	83,886
Available for sale investment securities:
State and municipal securities	—		952,613		—		952,613
Corporate debt securities	—		367,145		—		367,145
Collateralized mortgage obligations	—		503,766		—		503,766
Residential mortgage-backed securities	—		377,998		—		377,998
Commercial mortgage-backed securities	—		762,415		—		762,415
Auction rate securities	—		—		98,206		98,206
Total available for sale investment securities	—		2,963,937		98,206		3,062,143
Other assets:
Investments held in Rabbi Trust	24,383		—		—		24,383
Derivative assets	323		338,987		—		339,310
Total assets	$	24,706	$	3,386,810	$	98,206	$	3,509,722
Other liabilities:
Deferred compensation liabilities	$	24,383	$	—	$	—	$	24,383
Derivative liabilities	280		167,505		—		167,785
Total liabilities	$	24,663	$	167,505	$	—	$	192,168

The valuation techniques used to measure fair value for the items in the preceding tables are as follows:

Loans held for sale – This category includes mortgage loans held for sale that are measured at fair value. Fair values as of March 31, 2021 and December 31, 2020 were based on the price that secondary market investors were offering for loans with similar characteristics. See "Note 6 - Derivative Financial Instruments" for details related to the Corporation’s election to measure assets and liabilities at fair value.

Available for sale investment securities – Included in this asset category are debt securities. Level 2 investment securities are valued by a third-party pricing service. The pricing service uses pricing models that vary based on asset class and incorporate available market information, including quoted prices of investment securities with similar characteristics. Because many fixed income securities do not trade on a daily basis, pricing models use available information, as applicable, through processes such as benchmark yield curves, benchmarking of like securities, sector groupings and matrix pricing.

Standard market inputs include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data, including market research publications. For certain security types, additional inputs may be used, or some of the standard market inputs may not be applicable.

•State and municipal securities/Collateralized mortgage obligations/Residential mortgage-backed securities/Commercial mortgage-backed securities – These debt securities are classified as Level 2. Fair values are determined by a third-party pricing service, as detailed above.

•Corporate debt securities – This category consists of subordinated debt and senior debt issued by financial institutions ($355.0 million at March 31, 2021 and $362.8 million at December 31, 2020) and other corporate debt issued by non-financial institutions ($4.4 million at both March 31, 2021 and December 31, 2020).

•Auction rate securities – Due to their illiquidity, ARCs are classified as Level 3 investment securities and are valued through the use of an expected cash flows model prepared by a third-party valuation expert. The assumptions used in preparing the expected cash flows model include estimates for coupon rates, time to maturity and market rates of return. The most significant unobservable input to the expected cash flows model is an assumed return to market liquidity sometime in the next five years. If the assumed return to market liquidity was lengthened beyond the next five years, this would result in a decrease in the fair value of these ARCs. The Corporation believes that the trusts underlying the ARCs will self-liquidate as student loans are repaid. All of the loans underlying the ARCs have

33

principal payments which are guaranteed by the federal government. Level 3 fair values are tested by management through the performance of a trend analysis of the market price and discount rate. Changes in the price and discount rates are compared to changes in market data, including bond ratings, parity ratios, balances and delinquency levels.

Investments held in Rabbi Trust – This category consists of mutual funds that are held in trust for employee deferred compensation plans that the Corporation has elected to measure at fair value. Shares of mutual funds are valued based on net asset value, which represent quoted market prices for the underlying shares held in the mutual funds, and as such, are classified as Level 1.

Derivative assets – Fair value of foreign currency exchange contracts classified as Level 1 assets ($323,000 at both March 31, 2021 and December 31, 2020). The mutual funds and foreign exchange prices used to measure these items at fair value are based on quoted prices for identical instruments in active markets.

Level 2 assets, representing the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ($6.8 million at March 31, 2021 and $8.0 million at December 31, 2020) and the fair value of interest rate swaps ($190.0 million at March 31, 2021 and $331.0 million at December 31, 2020). The fair values of the Corporation’s interest rate locks, forward commitments and interest rate swaps represent the amounts that would be required to settle the derivative financial instruments at the balance sheet date. See "Note 6 - Derivative Financial Instruments," for additional information.

Deferred compensation liabilities – Fair value of amounts due to employees under deferred compensation plans, classified as Level 1 liabilities and are included in other liabilities on the consolidated balance sheets. The fair values of these liabilities are determined in the same manner as the related assets, as described under the heading "Investments held in Rabbi Trust" above.

Derivative liabilities – Level 1 liabilities, representing the fair value of foreign currency exchange contracts ($272,000 at March 31, 2021 and $280,000 at December 31, 2020).

Level 2 liabilities, representing the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ($316,000 at March 31, 2021 and $2.3 million at December 31, 2020 and the fair value of interest rate swaps ($108.6 million at March 31, 2021 and $165.2 million at December 31, 2020).

The fair values of these liabilities are determined in the same manner as the related assets, as described under the heading "Derivative assets" above.

The following table presents the changes in the Corporation’s available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3):

		Single-issuer Trust Preferred Securities		ARCs
Three months ended March 31, 2021	(in thousands)
Balance at December 31, 2020		$	—	$	98,206
Sales		—		(24,619)
Unrealized adjustment to fair value (1)		—		2,617
Balance at March 31, 2021		$	—	$	76,204
Three months ended March 31, 2020
Balance at December 31, 2019		$	2,400	$	101,926
Unrealized adjustment to fair value (1)		(242)		(8,260)
Discount accretion		2		—
Balance at March 31, 2020		$	2,160	$	93,666

(1)Pooled trust preferred securities, single-issuer trust preferred securities and ARCs are classified as available for sale investment securities; as such, the unrealized adjustment to fair value was recorded as an unrealized holding gain (loss) and included as a component of "available for sale at estimated fair value" on the consolidated balance sheets.

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Certain assets are not measured at fair value on an ongoing basis, but are subject to fair value measurement in certain circumstances, such as upon their acquisition or when there is evidence of impairment. The following table presents Level 3 financial assets measured at fair value on a nonrecurring basis:

	March 31, 2021		December 31, 2020
	(in thousands)
Loans, net	$	122,962	$	116,584
OREO	3,664		4,178
MSRs (1)	33,403		28,245
Total assets	$	160,029	$	149,007

(1)Amounts shown are estimated fair value. MSRs are recorded on the Corporation's consolidated balance sheets at the lower of amortized cost or fair value. See "Note 5 - Mortgage Servicing Rights" for additional information.

The valuation techniques used to measure fair value for the items in the table above are as follows:

•Net Loans – This category consists of loans that were individually evaluated for impairment and have been classified as Level 3 assets. See "Note 4 - Loans and Allowance for Credit Losses," for additional details.

•OREO – This category consists of OREO classified as Level 3 assets, for which the fair values were based on estimated selling prices less estimated selling costs for similar assets in active markets.

•MSRs - This category consists of MSRs, which were initially recorded at fair value upon the sale of residential mortgage loans to secondary market investors, and subsequently carried at the lower of amortized cost or fair value. MSRs are amortized as a reduction to servicing income over the estimated lives of the underlying loans. MSRs are stratified by product type and evaluated for impairment by comparing each stratum's carrying amount to its estimated fair value. Fair values are determined at the end of each quarter through a discounted cash flows valuation performed by a third-party valuation expert. Significant inputs to the valuation included expected net servicing income, the discount rate and the expected life of the underlying loans. Expected life is based on the contractual terms of the loans, as adjusted for prepayment projections. The weighted average annual constant prepayment rate and the weighted average discount rate used in the March 31, 2021 valuation were 15.3% and 9.5%, respectively. Management reviews the reasonableness of the significant inputs to the third-party valuation in comparison to market data. See "Note 5 - Mortgage Servicing Rights," for additional information.

In 2007, the Corporation received the Visa Shares in connection with a corporate restructuring undertaken by Visa, Inc. in contemplation of its initial public offering. These securities were considered equity securities without readily determinable fair values. As such, the approximately 133,000 Visa Shares owned were carried at a zero cost basis. During the first quarter of 2021, the Corporation sold all of its Visa Shares and recognized a $34.0 million gain.

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The following tables present the carrying amounts and estimated fair values of the Corporation’s financial instruments for the current period. A general description of the methods and assumptions used to estimate such fair values follows:

	March 31, 2021
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents	$	1,661,876	$	1,661,876	$	—	$	—	$	1,661,876
FRB and FHLB stock	66,209		—		66,209		—		66,209
Loans held for sale	34,092		—		34,092		—		34,092
AFS securities	2,758,597		—		2,682,393		76,204		2,758,597
HTM securities	853,413		—		843,743		—		843,743
Net Loans	18,725,000		—		—		18,354,532		18,354,532
Accrued interest receivable	65,649		65,649		—		—		65,649
Other assets	510,534		276,659		196,808		37,067		510,534
FINANCIAL LIABILITIES
Demand and savings deposits	$	19,250,538	$	19,250,538	$	—	$	—	$	19,250,538
Brokered deposits	309,873		289,873		21,001		—		310,874
Time deposits	2,073,427		—		2,087,663		—		2,087,663
Short-term borrowings	520,989		520,989		—		—		520,989
Accrued interest payable	5,618		5,618		—		—		5,618
Long-term borrowings	626,407		—		607,577		—		607,577
Other liabilities	297,069		173,899		108,897		14,273		297,069

	December 31, 2020
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents	$	1,847,832	$	1,847,832	$	—	$	—	$	1,847,832
FRB and FHLB stock	92,129		—		92,129		—		92,129
Loans held for sale	83,886		—		83,886		—		83,886
AFS securities	3,062,143		—		2,963,937		98,206		3,062,143
HTM securities	278,281		—		296,857		—		296,857
Net Loans	18,623,253		—		—		18,354,532		18,354,532
Accrued interest receivable	72,942		72,942		—		—		72,942
Other assets	650,425		279,015		338,987		32,423		650,425
FINANCIAL LIABILITIES
Demand and savings deposits	$	18,279,358	$	18,279,358	$	—	$	—	$	18,279,358
Brokered deposits	335,185		295,185		41,206		—		336,391
Time deposits	2,224,665		—		2,246,457		—		2,246,457
Short-term borrowings	630,066		630,066		—		—		630,066
Accrued interest payable	10,365		10,365		—		—		10,365
Long-term borrowings	1,296,263		—		1,332,041		—		1,332,041
Other liabilities	338,747		156,869		167,505		14,373		338,747

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Fair values of financial instruments are significantly affected by the assumptions used, principally the timing of future cash flows and discount rates. Because assumptions are inherently subjective in nature, the estimated fair values cannot be substantiated by comparison to independent market quotes and, in many cases, the estimated fair values could not necessarily be realized in an immediate sale or settlement of the instrument. The aggregate fair value amounts presented do not necessarily represent management’s estimate of the underlying value of the Corporation.

For short-term financial instruments, defined as those with remaining maturities of 90 days or less, and excluding those recorded at fair value on the Corporation’s consolidated balance sheets, book value was considered to be a reasonable estimate of fair value.

The following instruments are predominantly short-term:

Assets	Liabilities
Cash and cash equivalents	Demand and savings deposits
Accrued interest receivable	Short-term borrowings
	Accrued interest payable

FRB and FHLB stock represent restricted investments and are carried at cost on the consolidated balance sheets, which is a reasonable estimate of fair value.

As of March 31, 2021, fair values for loans and time deposits were estimated by discounting future cash flows using the current rates, as adjusted for liquidity considerations, at which similar loans would be made to borrowers and similar deposits would be issued to customers for the same remaining maturities. Fair values of loans also include estimated credit losses that would be assumed in a market transaction, which represents estimated exit prices.

Brokered deposits consists of demand and saving deposits, which are classified as Level 1, and time deposits, which are classified as Level 2. The fair value of these deposits are determined in a manner consistent with the respective type of deposits discussed above.

NOTE 10 – Net Income Per Share

Basic net income per share is calculated as net income available to common shareholders divided by the weighted average number of shares outstanding.

Diluted net income per share is calculated as net income available to common shareholders divided by the weighted average number of shares outstanding plus the incremental number of shares added as a result of converting common stock equivalents, calculated using the treasury stock method. The Corporation’s common stock equivalents consist of outstanding stock options, restricted stock, RSUs, and PSUs. PSUs are required to be included in weighted average diluted shares outstanding if performance measures, as defined in each PSU award agreement, are met as of the end of the period.

A reconciliation of weighted average shares outstanding used to calculate basic and diluted net income per share follows (in thousands, except per share data):

	Three months ended March 31
	2021		2020
Weighted average shares outstanding (basic)	162,441		163,475
Impact of common stock equivalents	1,296		942
Weighted average shares outstanding (diluted)	163,737		164,417
Per share:
Basic	$	0.43	$	0.16
Diluted	0.43		0.16

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NOTE 11 – Stock-Based Compensation

The Corporation grants equity awards to employees in the form of stock options, restricted stock, RSUs or PSUs under its Amended and Restated Equity and Cash Incentive Compensation Plan ("Employee Equity Plan"). Recent grants of equity awards under the Employee Equity Plan have generally been limited to RSUs and PSUs. In addition, employees may purchase stock under the Corporation’s Employee Stock Purchase Plan. The fair value of equity awards granted to employees is recognized as compensation expense over the period during which employees are required to provide service in exchange for such awards. Compensation expense for PSUs is also recognized over the period during which employees are required to provide service in exchange for such awards, however, compensation expense may vary based on the expectations for actual performance relative to defined performance measures.

The Corporation also grants equity awards to non-employee members of its board of directors and subsidiary bank boards of directors under the 2011 Directors’ Equity Participation Plan, which was amended and approved by shareholders as the Amended and Restated Directors’ Equity Participation Plan in 2019 ("Directors’ Plan"). Under the Directors’ Plan, the Corporation can grant equity awards to non-employee holding company and subsidiary bank directors in the form of stock options, restricted stock, RSUs or common stock. Recent grants of equity awards under the Directors’ Plan have been limited to RSUs.

Equity awards under the Employee Equity Plan are generally granted annually and become fully vested over or after a three-year vesting period. The vesting period for non-performance-based awards represents the period during which employees are required to provide service in exchange for such awards. Equity awards under the Directors' Plan are generally granted annually and become fully vested after a one-year vesting period. Certain events, as defined in the Employee Equity Plan and the Directors' Plan, result in the acceleration of the vesting of equity awards.

Fair values for RSUs and a majority of PSUs are based on the trading price of the Corporation’s stock on the date of grant and earn dividend equivalents during the vesting period, which are forfeitable if the awards do not vest. The fair value of certain PSUs are estimated through the use of the Monte Carlo valuation methodology as of the date of grant.

As of March 31, 2021, the Employee Equity Plan had 9.3 million shares reserved for future grants through 2023, and the Directors’ Plan had approximately 176,000 shares reserved for future grants through 2029.

The following table presents compensation expense and the related tax benefits for equity awards recognized in the consolidated statements of income:

	Three months ended March 31
	2021		2020
	(in thousands)
Compensation expense	$	1,902	$	1,619
Tax benefit	(414)		(344)
Stock-based compensation expense, net of tax benefit	$	1,488	$	1,275

NOTE 12 – Employee Benefit Plans

The net periodic pension cost for the Corporation’s Defined Benefit Pension Plan ("Pension Plan") consisted of the following components:

	Three months ended March 31
	2021		2020
	(in thousands)
Interest cost	$	561	$	681
Expected return on plan assets	(1,011)		(982)
Net amortization and deferral	504		465
Net periodic pension cost	$	54	$	164

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The components of the net benefit for the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components:

	Three months ended March 31
	2021		2020
	(in thousands)
Interest cost	$	8	$	11
Net accretion and deferral	(134)		(137)
Net periodic benefit	$	(126)	$	(126)

The Corporation recognizes the funded status of its Pension Plan and Postretirement Plan on the consolidated balance sheets and recognizes the change in that funded status through other comprehensive income.

NOTE 13 – Commitments and Contingencies

Commitments

The Corporation is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers.

Those financial instruments include commitments to extend credit and letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized on the Corporation’s consolidated balance sheets. Exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and letters of credit is represented by the outstanding amount of those instruments.

The Corporation records a reserve for unfunded lending commitments, included in ACL - OBS credit exposures, which represents management’s estimate of credit losses associated with unused commitments to extend credit and letters of credit. As of March 31, 2021 and December 31, 2020, the ACL - OBS credit exposures for unfunded lending commitments was $9.7 million and $9.1 million, respectively. See "Note 4 - Loans and Allowance for Credit Losses," for additional details.

The following table presents the Corporation's commitments to extend credit and letters of credit:

	March 31, 2021		December 31, 2020
	(in thousands)
Commitments to extend credit	$	9,018,523	$	8,651,055
Standby letters of credit	295,516		298,750
Commercial letters of credit	57,917		56,229

Residential Lending

The Corporation originates and sells residential mortgages to secondary market investors. The Corporation provides customary representations and warranties to secondary market investors that specify, among other things, that the loans have been underwritten to the standards of the secondary market investor. The Corporation may be required to repurchase specific loans, or reimburse the investor for a credit loss incurred on a sold loan if it is determined that the representations and warranties have not been met. Under some agreements with secondary market investors, the Corporation may have additional credit exposure beyond customary representations and warranties, based on the specific terms of those agreements.

The Corporation maintains a reserve for estimated losses related to loans sold to investors. As of both March 31, 2021 and December 31, 2020, the total reserve for losses on residential mortgage loans sold was $1.1 million, including reserves for both representation and warranty and credit loss exposures. With the adoption of CECL on January 1, 2020 the reserve for estimated losses on certain residential mortgage loans sold to investors was reclassified to ACL - OBS credit exposures. This reclassification resulted in a $2.1 million increase to ACL - OBS credit exposures and a corresponding decrease to the reserve for estimated losses related to loans sold to investors in the first quarter of 2020.

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Legal Proceedings

The Corporation is involved in various pending and threatened claims and other legal proceedings in the ordinary course of its business activities. The Corporation evaluates the possible impact of these matters, taking into consideration the most recent information available. A loss reserve is established for those matters for which the Corporation believes a loss is both probable and reasonably estimable. Once established, the reserve is adjusted as appropriate to reflect any subsequent developments. Actual losses with respect to any such matter may be more or less than the amount estimated by the Corporation. For matters where a loss is not probable, or the amount of the loss cannot be reasonably estimated by the Corporation, no loss reserve is established.

In addition, from time to time, the Corporation is involved in investigations or other forms of regulatory or governmental inquiry covering a range of possible issues and, in some cases, these may be part of similar reviews of the specified activities of other companies. These inquiries or investigations could lead to administrative, civil or criminal proceedings involving the Corporation, and could result in fines, penalties, restitution, other types of sanctions or restrictions, or the need for the Corporation to undertake remedial actions, or to alter its business, financial or accounting practices. The Corporation’s practice is to cooperate fully with regulatory and governmental inquiries and investigations.

As of the date of this report, the Corporation believes that any liabilities, individually or in the aggregate, which may result from the final outcomes of pending legal proceedings, or regulatory or governmental inquiries or investigations, will not have a material adverse effect on the financial condition of the Corporation. However, legal proceedings, inquiries and investigations are often unpredictable, and it is possible that the ultimate resolution of any such matters, if unfavorable, may be material to the Corporation’s results of operations in any future period, depending, in part, upon the size of the loss or liability imposed and the operating results for the period, and could have a material adverse effect on the Corporation’s business. In addition, regardless of the ultimate outcome of any such legal proceeding, inquiry or investigation, any such matter could cause the Corporation to incur additional expenses, which could be significant, and possibly material, to the Corporation’s results of operations in any future period.

Kress v. Fulton Bank, N.A.

On October 15, 2019, a former Fulton Bank teller supervisor, D. Kress filed a putative collective and class action lawsuit on behalf of herself and other teller supervisors, tellers, and other similar non-exempt employees in the U.S. District Court for the District of New Jersey, D. Kress v. Fulton Bank, N.A., Case No. 1:19-cv-18985. Fulton Bank accepted summons without a formal service of process on January 20, 2020. The lawsuit alleges that Fulton Bank did not record or otherwise account for the amount of time D. Kress and putative collective and class members spent conducting branch opening security procedures. The allegation is that, as a result, Fulton Bank did not properly compensate those employees for their regular and overtime wages. The lawsuit alleges that by doing so, Fulton violated: (i) the federal Fair Labor Standards Act and seeks back overtime wages for a period of three years, liquidated damages and attorney fees and costs; (ii) the New Jersey State Wage and Hour Law and seeks back overtime wages for a period of six years, treble damages and attorney fees and costs; and (iii) the New Jersey Wage Payment Law and seeks back wages for a period of six years, treble damages and attorney fees and costs. The lawsuit also asserts New Jersey common law claims seeking compensatory damages and interest. The Corporation and counsel representing plaintiffs ("Plaintiffs’ Counsel") have reached and executed a formal Settlement Agreement to resolve this lawsuit. Plaintiffs’ Counsel has filed a Motion for Preliminary Approval of Class and Collective Settlement and Provisional Certification of Settlement Class and Collective ("the Motion") with the U.S. District Court for the District of New Jersey ("the Court"). The Corporation is not able to provide any assurance that the Court will grant the Motion. If the Court does grant the Motion, the Settlement Agreement will be administered according to its terms and thereafter subject to final approval by the Court. The financial terms of the Settlement Agreement are not expected to be material to the Corporation. The Corporation established an accrued liability during the third quarter of 2020 for the costs expected to be incurred in connection with the Settlement Agreement.

NOTE 14 – Long-Term Borrowings

Pursuant to a cash tender offer, the Corporation purchased $75.0 million and $60.0 million of its subordinated notes which mature on November 15, 2024 and its senior notes which mature on March 16, 2022, respectively. The subordinated notes carry a fixed rate of 4.50% and an effective rate of 4.87% and the senior notes carry a fixed rate of 3.60% and an effective rate of 3.95%. The Corporation incurred $11.3 million in debt extinguishment costs and expensed $841,000 of unamortized discount costs. In addition, the Corporation prepaid $536.0 million of long-term FHLB advances and incurred $20.9 million in prepayment penalties.

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

This Management’s Discussion and Analysis of Financial Condition and Results of Operations ("Management’s Discussion") relates to Fulton Financial Corporation, a financial holding company registered under the Bank Holding Company Act and incorporated under the laws of the Commonwealth of Pennsylvania in 1982, and its wholly owned subsidiaries. Management’s Discussion should be read in conjunction with the consolidated financial statements and other financial information presented in this report.

FORWARD-LOOKING STATEMENTS

The Corporation has made, and may continue to make, certain forward-looking statements with respect to its financial condition, results of operations and business. Do not unduly rely on forward-looking statements. Forward-looking statements can be identified by the use of words such as "may," "should," "will," "could," "estimates," "predicts," "potential," "continue," "anticipates," "believes," "plans," "expects," "future," "intends," "projects," the negative of these terms and other comparable terminology. These forward-looking statements may include projections of, or guidance on, the Corporation's future financial performance, expected levels of future expenses, including future credit losses, anticipated growth strategies, descriptions of new business initiatives and anticipated trends in the Corporation's business or financial results.

Forward-looking statements are neither historical facts, nor assurance of future performance. Instead, they are based on current beliefs, expectations and assumptions regarding the future of the Corporation's business, future plans and strategies, projections, anticipated events and trends, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict and many of which are outside of the Corporation's control, and actual results and financial condition may differ materially from those indicated in the forward-looking statements. Therefore, you should not unduly rely on any of these forward-looking statements. Any forward-looking statement is based only on information currently available and speaks only as of the date when made. The Corporation undertakes no obligation, other than as required by law, to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. Many factors could affect future financial results including, without limitation:

•the impact of adverse conditions in the economy and financial markets on the performance of the Corporation’s loan portfolio and demand for the Corporation’s products and services;

•the scope and duration of the COVID-19 pandemic, actions taken by governmental authorities in response to the pandemic, the Corporation’s participation in the PPP and other COVID-19 relief programs, and the direct and indirect impacts of the pandemic on the Corporation, its customers and third parties;

•the determination of the ACL, which depends significantly upon assumptions and judgments with respect to a variety of factors, including the performance of the loan portfolio, the weighted-average remaining lives of different classifications of loans within the loan portfolio and current and forecasted economic conditions, among other factors;

•increases in non-performing assets, which may require the Corporation to increase the allowance for credit losses, charge off loans and incur elevated collection and carrying costs related to such non-performing assets;

•investment securities gains and losses, including other-than-temporary declines in the value of securities which may result in charges to earnings;

•the effects of market interest rates, and the relative balances of interest rate-sensitive assets to interest rate-sensitive liabilities, on net interest margin and net interest income;

•the planned phasing out of LIBOR as a benchmark reference rate;

•the effects of changes in interest rates on demand for the Corporation’s products and services;

•the effects of changes in interest rates or disruptions in liquidity markets on the Corporation’s sources of funding;

•the effects of the extensive level of regulation and supervision to which the Corporation and Fulton Bank are subject;

•the effects of the significant amounts of time and expense associated with regulatory compliance and risk management;

•the potential for negative consequences resulting from regulatory violations, investigations and examinations, or failure to comply with the BSA, the Patriot Act and related AML requirements, including potential supervisory actions, the assessment of fines and penalties, the imposition of sanctions or restrictions, the need to undertake remedial actions and possible damage to the Corporation’s reputation;

•the continuing impact of the Dodd-Frank Act on the Corporation’s business and results of operations;

•the effects of, and uncertainty surrounding, new legislation, changes in regulation and government policy, which could result in significant changes in banking and financial services regulation;

•the effects of actions by the federal government, including those of the Federal Reserve Board and other government agencies, that impact money supply and market interest rates;

•the effects of changes in U.S. federal, state or local tax laws;

•the effects of negative publicity on the Corporation’s reputation;

•the effects of adverse outcomes in litigation and governmental or administrative proceedings;

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•the potential to incur losses in connection with repurchase and indemnification payments related to sold loans;

•the Corporation’s ability to achieve its growth plans;

•completed and potential acquisitions may affect costs and the Corporation may not be able to successfully integrate the acquired business or realize the anticipated benefits from such acquisitions;

•the potential effects of climate change and related government policies on the Corporation’s business and results of operations;

•the Corporation’s ability to implement, from time to time, measures intended to manage growth in non-interest expenses and improve the efficiency of its operations and realize the intended effects of those initiatives;

•the effects of competition on deposit rates and growth, loan rates and growth and net interest margin;

•the Corporation’s ability to manage the level of non-interest expenses, including salaries and employee benefits expenses, operating risk losses and goodwill impairment;

•the effects of changes in accounting policies, standards, and interpretations on the Corporation’s reporting of its financial condition and results of operations;

•the impact of operational risks, including the risk of human error, inadequate or failed internal processes and systems, computer and telecommunications systems failures, faulty or incomplete data and an inadequate risk management framework;

•the impact of failures of third parties upon which the Corporation relies to perform in accordance with contractual arrangements;

•the failure or circumvention of the Corporation’s system of internal controls;

•the loss of, or failure to safeguard, confidential or proprietary information;

•the Corporation’s failure to identify and to address cyber-security risks, including data breaches and cyber-attacks;

•the Corporation’s ability to keep pace with technological changes;

•the Corporation’s ability to attract and retain talented personnel;

•capital and liquidity strategies, including the Corporation’s ability to comply with applicable capital and liquidity requirements, and the Corporation’s ability to generate capital internally or raise capital on favorable terms;

•the Corporation’s reliance on its subsidiaries for substantially all of its revenues and its ability to pay dividends or other distributions; and

•the effects of any downgrade in the Corporation’s or Fulton Bank’s credit ratings on their borrowing costs or access to capital markets.

Additional information regarding these as well as other factors that could affect future financial results can be found in the sections entitled "Risk Factors" and "Management’s Discussion and Analysis of Financial Condition and Results of Operations" in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2020 and elsewhere in this Report, including in Note 13 "Commitments and Contingencies" of the Notes to Consolidated Financial Statements and in Item 1A. "Risk Factors".

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RESULTS OF OPERATIONS

Overview

The Corporation generates the majority of its revenue through net interest income, or the difference between interest earned on loans, investments and other interest-earning assets, and interest paid on deposits and borrowings. Growth in net interest income is dependent upon balance sheet growth and maintaining or increasing the net interest margin, which is FTE net interest income as a percentage of average interest-earning assets. The Corporation also generates revenue through fees earned on the various services and products offered to its customers and through gains on sales of assets, such as loans, investments, or properties. Offsetting these revenue sources are provisions for credit losses on loans and OBS credit risks, non-interest expenses and income taxes.

The following table presents a summary of the Corporation’s earnings and selected performance ratios:

	Three months ended March 31
	2021	2020
Net income (in thousands)	$73,063	$26,047
Net income available to common shareholders (in thousands)	$70,472	$26,047
Diluted net income per share	$0.43	$0.16
Return on average assets, annualized	1.14%	0.47%
Return on average shareholders' equity, annualized	11.24%	4.48%
Return on average common shareholders' equity (tangible), annualized (1)	15.00%	5.84%
Net interest margin (2)	2.79%	3.21%
Efficiency ratio (1)	63.0%	64.5%
Non-performing assets to total assets	0.60%	0.64%
Annualized net charge-offs to average loans	0.13%	0.26%

(1)Ratio represents a financial measure derived by methods other than GAAP. See reconciliation of this non-GAAP financial measure to the most directly comparable GAAP measure under the heading, "Supplemental Reporting of Non-GAAP Based Financial Measures" at the end of this "Overview" section of Management’s Discussion.

(2)Presented on an FTE basis, using a 21% federal tax rate and statutory interest expense disallowances. See also the “Net Interest Income” section of Management’s Discussion.

COVID-19 Pandemic

The COVID-19 pandemic has caused substantial disruptions in economic and social activity, both globally and in the United States. The spread of COVID-19, and related governmental actions to mandate or encourage temporary closures of businesses, quarantines, social distancing, "stay at home" orders and other restrictions on in-person operations and activities, have caused severe disruptions in the U.S. economy, which has, in turn, disrupted, and will likely continue to disrupt, the business, activities, and operations of the Corporation’s customers, as well as the Corporation’s own business and operations. The resulting impacts of the pandemic on consumers, including elevated levels of unemployment, have continued to cause changes in consumer and business spending, borrowing needs and saving habits, which have and will likely continue to affect the demand for loans and other products and services the Corporation offers, as well as the creditworthiness of its borrowers. The significant decrease in commercial activity, disruptions in supply chains and other effects associated with the pandemic, both nationally and in the Corporation’s markets, may cause customers, vendors and counterparties to be unable to meet existing payment or other obligations to the Corporation.

While portions of the national economy have reopened, there is still significant uncertainty concerning the breadth and duration of business disruptions related to the COVID-19 pandemic, as well as their impact on the U.S. economy. The extent to which the pandemic impacts the Corporation’s results will depend on future developments, which are highly uncertain and cannot be predicted, including new information which may emerge concerning the continuing severity of the COVID-19 pandemic, whether there are additional outbreaks of COVID-19, and the actions taken to contain it or treat its impact. Moreover, although multiple COVID-19 vaccines have received regulatory approval and are currently being distributed, it is too early to know how quickly these vaccines can be distributed and how effective they will be in mitigating the adverse social and economic effects of the COVID-19 pandemic.

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The Corporation’s business is dependent upon the willingness and ability of its customers to conduct banking and other financial transactions. In an effort to mitigate the spread of COVID-19, the Corporation adjusted service models at certain of its financial center locations, including limiting some locations to drive-up and ATM services only, offering lobby access by appointment only, and encouraging the Corporation’s customers to use electronic banking platforms. Approximately 25% of the Corporation’s locations are expected to provide lobby access by appointment only on a long-term basis.

A significant portion of the Corporation’s employees transitioned to working remotely as a result of the COVID-19 pandemic, which, in addition to requiring added support from the Corporation’s information technology infrastructure, increases cybersecurity risks. The continued spread of COVID-19 (or an outbreak of a similar highly contagious disease) could also negatively impact the business and operations of third-party service providers who perform critical services for the Corporation’s business.

COVID-19 has significantly affected the financial markets and has resulted in a number of responses by the U.S. government, including reductions in interest rates by the FOMC. These reductions in interest rates, especially if prolonged, could adversely affect the Corporation’s net interest income and margins and the Corporation’s profitability.

The CARES Act was enacted in March 2020 and, among other provisions, authorized the SBA to guarantee loans under the PPP for small businesses that meet eligibility requirements in order to keep their workers on the payroll and fund specified operating expenses. Subsequent legislation extended the authority of the SBA to guaranty loans under the PPP through August 8, 2020. In December 2020, the Economic Aid to Hard-Hit Small Businesses, Nonprofits, and Venues Act reauthorized the SBA to guarantee loans under the PPP through March 31, 2021, and the PPP Extension Act of 2021 extended that authorization through June 30, 2021 for applications received by the SBA prior to June 1, 2021. From the inception of the PPP through March 31, 2021, the Corporation funded a total of approximately $2.6 billion of loans under the PPP. Through March 31, 2021, a total of $958.6 million of those PPP loans have qualified for loan forgiveness and have been repaid by the SBA.

A series of stimulus payments to eligible consumers, enhanced unemployment benefits provided by the federal government and traditional, state-provided unemployment compensation, as well as other forms of relief provided to consumers and businesses, have helped to limit some of the adverse impacts of COVID-19 and, together with other factors, have contributed to significant growth in the Corporation’s customer deposit balances since the pandemic began. The reduction, expiration or discontinuation of these measures may adversely impact the recovery of economic activity and the ability of borrowers to meet their payment and other obligations to the Corporation, either of which could require the Corporation to increase the ACL through provisions for credit losses. Further, if economic activity continues to recover, and consumer spending and business investment increase, customers may be less likely to maintain deposit balances with the Corporation at recent levels, which might require the Corporation to increase its reliance on alternative or higher-cost sources of funding.

The impact of COVID-19 on the Corporation’s financial results is evolving and uncertain. The Corporation has limited exposure to some of the industries that were initially most significantly impacted by COVID-19, such as hospitality and food services, energy and entertainment, and most of these loans are secured by real estate and other forms of collateral. While many areas of the economy exhibited signs of recovery beginning in the second half of 2020, the lingering effects of the pandemic, particularly in certain sectors of the economy, or a resurgence in COVID-19 infections that prompts the continuation or imposition of governmental restrictions on activities, may result in decreased demand for the Corporation’s loan products. In addition, the decline in economic activity occurring due to COVID-19 and the actions by the FOMC with respect to interest rates are likely to affect the Corporation’s net interest income, non-interest income and credit-related losses for an uncertain period of time. See additional discussion in "Results of Operations" and "Financial Condition" of Management's Discussion.

Financial Highlights

Following is a summary of the financial highlights for the three months ended March 31, 2021:

•Net Income Available to Common Shareholders and Net Income Per Share - Net income available to common shareholders was $70.5 million for the three months ended March 31, 2021, a $44.5 million increase compared to $26.0 million for the same period of 2020. Diluted net income per share was $0.43, a $0.27 increase compared to the same period in 2020. The increase in net income during the first three months of 2021 was primarily a result of a lower provision for credit losses, an increase in net interest income, higher non-interest income and net investment securities gains, partially offset by higher non-interest expense, as detailed below.

•Net Interest Income - Net interest income increased $3.7 million, or 2.3%, for the three months ended March 31, 2021 compared to the same period in 2020. The increase resulted from lower rates on interest-bearing liabilities and a higher volume of interest-earning assets, primarily loans, partially offset by lower yields on interest-earning assets. Overall,

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the net interest margin decreased 42 bp for the three months ended March 31, 2021 compared to the same period in 2020.

◦Net Interest Margin - For the three months ended March 31, 2021, the decrease in the net interest margin reflected the net impact of an 84 bp decrease in yields on interest-earning assets, partially offset by a 44 bp decrease in the cost of funds.

◦Loan Growth - Average Net Loans grew by $2.1 billion, or 12.6%, for the three months ended March 31, 2021 compared to the same period in 2020. The increase was driven largely by the issuance of PPP loans and growth in the real estate commercial and residential mortgage portfolios.

◦Deposit Growth - Average deposits grew $4.0 billion, or 23.3%, for the three months ended March 31, 2021 compared to the same period in 2020. The increase was driven by growth in all deposit categories except time deposits. The increases in average total demand and savings accounts were driven by strong customer liquidity.

•Provision for Credit Losses - The provision for credit losses was a negative $5.5 million for the first quarter of 2021, a decrease of $49.5 million from the same period of 2020. Improved economic forecasts and a decrease in specific allocations within the ACL for loans evaluated individually, reduced the level of the ACL determined to be necessary at the end of the first quarter of 2021 in comparison to the end of the fourth quarter of 2020. The $44.0 million provision for credit losses in the first quarter of 2020 was primarily driven by the assessment of the initial estimated impacts of COVID-19, as reflected in economic forecasts as of the end of the first quarter of 2020, on the level of expected credit losses.

•Asset Quality - Non-performing assets increased $4.8 million, or 3.2%, as of March 31, 2021 compared to December 31, 2020, and were 0.60% and 0.58% of total assets, respectively, as of those dates. Annualized net charge-offs to average loans outstanding were 0.13% for the three months ended March 31, 2021 compared to 0.26% for the same period in 2020.

•Balance Sheet Restructuring - During the first quarter of 2021, the Corporation completed a balance sheet restructuring that included a $34.0 million gain on sale of Visa Shares, offset by other securities losses of $400,000, debt extinguishment costs of $32.2 million and a write-off of $841,000 recognized in net interest income in connection with the cash tender offer for certain of its outstanding senior and subordinated notes and the prepayment of certain term FHLB advances. See Note 14, "Long-Term Debt," in the Notes to Consolidated Financial Statements for further details on the tender of certain outstanding senior and subordinated notes.

The Corporation executed $500 million of receive-fixed, pay-variable interest rate swaps, during the first quarter of 2021, to reduce exposure to interest rate risk and potentially increase net interest income.

•Non-interest Income - For the three months ended March 31, 2021, non-interest income, excluding net investment securities gains, increased $7.3 million, or 13.4%, as compared to the same period in 2020. The increase was primarily the result of mortgage banking income, which increased $7.7 million, driven by a $6.1 million decrease to the valuation allowance for MSRs. In addition, wealth management fees increased $2.3 million, or 15.2%, resulting from an increase in client asset levels and overall market performance. Partially offsetting these increases were decreases in commercial and consumer banking revenues, primarily driven by lower capital markets revenue and overdraft fees, respectively.

•Non-interest Expense - Non-interest expense increased $35.8 million, or 25.1%, for the three months ended March 31, 2021 compared to the same period in 2020. The increase during the quarter was largely driven by debt extinguishment costs which associated with the balance sheet restructuring. Increases were also recognized in salaries and employee benefits, data processing and software expenses and state taxes.

•Income Taxes - Income tax expense for the three months ended March 31, 2021 was $13.9 million, an $11.1 million increase from $2.8 million for the same period in 2020. The Corporation’s ETR was 16.0% for the three months ended March 31, 2021, compared to 9.6% in the same period of 2020. The increase in income tax expense primarily resulted from an increase in income before taxes. The ETR is generally lower than the federal statutory rate of 21% due to tax-exempt interest income earned on loans, investments in tax-free municipal securities and investments in community development projects that generate tax credits under various federal programs.

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Supplemental Reporting of Non-GAAP Based Financial Measures

This Quarterly Report on Form 10-Q contains supplemental financial information, as detailed below, which has been derived by methods other than GAAP. The Corporation has presented these non-GAAP financial measures because it believes that these measures provide useful and comparative information to assess trends in the Corporation's results of operations and financial condition. Presentation of these non-GAAP financial measures is consistent with how the Corporation evaluates its performance internally, and these non-GAAP financial measures are frequently used by securities analysts, investors and other interested parties in the evaluation of the Corporation and companies in the Corporation's industry. Management believes that these non-GAAP financial measures, in addition to GAAP measures, are also useful to investors to evaluate the Corporation's results. Investors should recognize that the Corporation's presentation of these non-GAAP financial measures might not be comparable to similarly-titled measures at other companies. These non-GAAP financial measures should not be considered a substitute for GAAP basis measures, and the Corporation strongly encourages a review of its consolidated financial statements in their entirety. Following are reconciliations of these non-GAAP financial measures to the most directly comparable GAAP measure:

	Three months ended March 31
	2021			2020
	(dollars in thousands)
Return on average common shareholders' equity (tangible)
Net income available to common shareholders	$	70,472		$	26,047
Plus: Intangible amortization, net of tax	90			104
Numerator	$	70,562		$	26,151
Average common shareholders' equity	$	2,637,098		$	2,337,016
Less: Average goodwill and intangible assets	(536,601)			(535,235)
Less: Average preferred stock	(192,878)			—
Denominator	$	1,907,619		$	1,801,781
Return on average common shareholders' equity (tangible), annualized	15.00		%	5.84		%
Efficiency ratio
Non-interest expense	$	178,384		$	142,552
Less: Debt extinguishment cost	(32,163)			—
Less: Amortization of tax credit investments	(1,531)			(1,450)
Less: Intangible amortization	(115)			(132)
Numerator	$	144,575		$	140,970
Net interest income (FTE) (1)	$	167,428		$	163,970
Plus: Total non-interest income	95,397			54,644
Less: Investment securities gains, net	(33,475)			(46)
Denominator	$	229,350		$	218,568
Efficiency ratio	63.0		%	64.5		%

(1)    Presented on a FTE basis, using a 21% federal tax rate and statutory interest expense disallowances. See also the “Net Interest Income” section of Management’s Discussion and Analysis.

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Three months ended March 31, 2021 compared to the three months ended March 31, 2020

Net Interest Income

FTE net interest income increased $3.5 million, to $167.4 million, for the three months ended March 31, 2021, from $164.0 million in the same period in 2020. The NIM decreased 42 bp, or 13.1%, to 2.79%, compared to 3.21% for the same period in 2020. The following table provides a comparative average balance sheet and net interest income analysis for those periods. Interest income and yields are presented on an FTE basis, using a 21% federal tax rate and statutory interest expense disallowances. The discussion following this table is based on these FTE amounts.

	Three months ended March 31
	2021						2020
	Average Balance		Interest		Yield/ Rate		Average Balance		Interest		Yield/ Rate
ASSETS	(dollars in thousands)
Interest-earning assets:
Net Loans (1)	$	18,980,586	$	165,462	3.53	%	$	16,860,067	$	177,496	4.23	%
Taxable investment securities (2)	2,438,496		13,691		2.08		2,284,457		16,294		2.85
Tax-exempt investment securities (2)	911,648		7,156		3.13		720,223		5,960		3.29
Total investment securities	3,350,144		20,847		2.49		3,004,680		22,254		2.96
Loans held for sale	53,465		471		3.53		27,178		320		4.71
Other interest-earning assets	1,900,199		1,136		0.24		602,270		2,532		1.69
Total interest-earning assets	24,284,394		187,916		3.13		20,494,195		202,602		3.97
Noninterest-earning assets:
Cash and due from banks	120,181						138,248
Premises and equipment	230,649						239,619
Other assets	1,728,473						1,590,666
Less: ACL - loans (3)	(280,881)						(210,629)
Total Assets	$	26,082,816					$	22,252,099
LIABILITIES AND SHAREHOLDERS' EQUITY
Interest-bearing liabilities:
Demand deposits	$	5,832,174	$	1,160	0.08	%	$	4,649,905	$	5,643	0.49	%
Savings deposits	6,137,084		1,526		0.10		5,127,662		7,110		0.56
Brokered deposits	324,364		395		0.49		275,359		1,073		1.57
Time deposits	2,150,570		6,521		1.23		2,761,474		12,614		1.84
Total interest-bearing deposits	14,444,192		9,602		0.27		12,814,400		26,440		0.83
Short-term borrowings	570,775		188		0.13		1,303,047		4,073		1.25
Long-term borrowings	1,271,170		10,698		3.38		1,063,214		8,119		3.06
Total interest-bearing liabilities	16,286,137		20,488		0.51		15,180,661		38,632		1.02
Noninterest-bearing liabilities:
Demand deposits	6,672,832						4,307,027
Total Deposits/Cost of deposits	21,117,024				0.18		17,121,427				0.62
Other liabilities	486,749						427,395
Total Liabilities	23,445,718						19,915,083
Total Interest-bearing liabilities and non-interest bearing deposits/Cost of funds	22,958,969				0.36		19,487,688				0.80
Shareholders’ equity	2,637,098						2,337,016
Total Liabilities and Shareholders’ Equity	$	26,082,816					$	22,252,099
Net interest income/FTE NIM			167,428		2.79	%			163,970		3.21	%
Tax equivalent adjustment			(2,979)						(3,224)
Net interest income			$	164,449					$	160,746

(1)Average balance includes non-performing loans.

(2)Balances include amortized historical cost for AFS. The related unrealized holding gains (losses) are included in other assets.

(3)ACL - loans relates to the ACL specifically for Net Loans and does not include the ACL for OBS credit exposures, which is included in other liabilities.

47

The following table summarizes the changes in FTE interest income and interest expense resulting from changes in average balances (volume) and changes in rates for the three months ended March 31, 2021 in comparison to the same period in 2020:

	2021 vs. 2020 Increase (Decrease) due to change in
	Volume		Rate		Net
	(in thousands)
FTE Interest income on:
Net Loans (1)	$	20,027	$	(32,061)	$	(12,034)
Taxable investment securities	1,217		(3,820)		(2,603)
Tax-exempt investment securities	1,494		(298)		1,196
Loans held for sale	246		(95)		151
Other interest-earning assets	2,073		(3,469)		(1,396)
Total interest income	$	25,057	$	(39,743)	$	(14,686)
Interest expense on:
Demand deposits	$	1,110	$	(5,750)	$	(4,640)
Savings deposits	1,156		(6,740)		(5,584)
Brokered deposits	146		(824)		(678)
Time deposits	(2,376)		(3,560)		(5,936)
Short-term borrowings	(1,500)		(2,385)		(3,885)
Long-term borrowings	1,688		891		2,579
Total interest expense	$	224	$	(18,368)	$	(18,144)

(1)Average balance includes non-performing loans.

Note: Changes which are partially attributable to both volume and rate are allocated to the volume and rate components presented above based on the percentage of direct changes that are attributable to each component.

The general level of interest rates has remained at or near historic lows since March 2020 as a result of the FOMC reducing the Fed Funds Rate to near zero and taking other monetary policy actions in response to COVID-19. As summarized in the preceding table, the 84 bp decrease in the yield on average interest-earning assets drove a $39.7 million decrease in FTE interest income that was partially offset by the impact of a $3.8 billion, or 18.5%, increase in average interest-earning assets, primarily PPP loans, which contributed $25.1 million to FTE interest income. The yield on the loan portfolio decreased 70 bp, or 16.5%, from the first quarter of 2020, as variable and certain adjustable rate loans repriced to lower rates, and yields on new loan originations generally were lower than the average yield on the loan portfolio. Adjustable rate loans reprice on dates specified in the loan agreements, which may be later than the date the Fed Funds Rate and related loan index rates increase or decrease. As a result, the impact of changes in index rates, primarily the prime rate and LIBOR, on adjustable rate loans may not be fully realized until future periods.

Interest expense decreased $18.1 million primarily due to the 51 bp decrease in the rate on average interest-bearing liabilities. The rates on average interest-bearing demand deposits and savings deposits decreased 41 bp and 46 bp, respectively, which contributed $5.8 million and $6.7 million to the decrease in interest expense, respectively. The cost of average time deposits decreased 61 bp and the average balance of time deposits decreased, which contributed $3.6 million and $2.4 million to the decrease in interest expense, respectively. In addition, the 112 bp decrease in the rates on short-term borrowings and the $732.3 million decrease in average short-term borrowings contributed $2.4 million and $1.5 million to the decrease in interest expense, respectively. The $208.0 million increase in average long-term borrowings and the 32 bp increase in the average rate on long-term borrowings resulted in an $1.7 million and $900,000 of additional interest expense, respectively. As discussed in the "Overview" section of Management's Discussion, the Corporation completed a balance sheet restructuring in March of 2021, which included the prepayment of $535.0 million of FHLB advances and the cash tender offer for $75.0 million and $60.0 million of subordinated debt and senior notes, respectively. This reduction in long-term borrowings had a limited impact on the average balances during the first quarter of 2021.

48

Average loans and average FTE yields, by type, are summarized in the following table:

	Three months ended March 31								Increase (Decrease)
	2021				2020				in Balance
	Balance		Yield		Balance		Yield		$		%
	(dollars in thousands)
Real estate – commercial mortgage	$	7,128,997	3.15	%	$	6,746,766	4.20	%	$	382,231	5.7	%
Commercial and industrial (1)	5,722,080		2.57		4,446,750		4.21		1,275,330		28.7
Real estate – residential mortgage	3,183,585		3.52		2,670,019		3.97		513,566		19.2
Real estate – home equity	1,175,218		3.75		1,300,132		4.73		(124,914)		(9.6)
Real estate – construction	1,054,718		3.09		929,529		4.13		125,189		13.5
Consumer	459,038		4.13		466,415		4.34		(7,377)		(1.6)
Equipment lease financing	266,405		4.11		284,566		4.32		(18,161)		(6.4)
Other (2)	(9,455)		—		15,890		—		(25,345)		N/M
Total loans	$	18,980,586	3.53	%	$	16,860,067	4.23	%	$	2,120,519	12.6	%

(1) Includes average PPP loans of $1.7 billion and $0 for the three months ended March 31, 2021 and 2020, respectively.

(2) Consists of overdrafts and net origination fees and costs.

Average loans increased $2.1 billion, or 12.6%, compared to the same period of 2020. The increase was driven largely by growth in the commercial and industrial portfolio as a result of loans originated under the PPP. Excluding loans originated under the PPP, commercial and industrial loan balances declined. Commercial and residential mortgage loan portfolios, as well as the construction, consumer and equipment lease financing portfolios, experienced growth, partially offset by decreases in the home equity loan portfolio.

Average deposits and average interest rates, by type, are summarized in the following table:

	Three months ended March 31								Increase (Decrease)  in Balance
	2021				2020
	Balance		Rate		Balance		Rate		$		%
	(dollars in thousands)
Noninterest-bearing demand	$	6,672,832	—	%	$	4,307,027	—	%	$	2,365,805	54.9	%
Interest-bearing demand	5,832,174		0.08		4,649,905		0.49		1,182,269		25.4
Savings	6,137,084		0.10		5,127,662		0.56		1,009,422		19.7
Total demand and savings	18,642,090		0.06		14,084,594		0.36		4,557,496		32.4
Brokered deposits	324,364		0.49		275,359		1.57		49,005		17.8
Time deposits	2,150,570		1.23		2,761,474		1.84		(610,904)		(22.1)
Total deposits	$	21,117,024	0.18	%	$	17,121,427	0.62	%	$	3,995,597	23.3	%

The average cost of total deposits decreased 44 bp, to 0.18%, for the first quarter of 2021, compared to 0.62% for the same period of 2020, mainly as a result of reductions in deposit rates due to the continued low interest rate environment. This decrease in the average cost of deposits contributed $16.9 million to the reduction of interest expense. Average total deposits increased $4.0 billion, or 23.3%, primarily driven by increases in noninterest-bearing demand deposits, interest-bearing demand and saving accounts, partially offset by a decrease in time deposits.

49

Average borrowings and interest rates, by type, are summarized in the following table:

	Three months ended March 31								Increase (Decrease)
	2021				2020				in Balance
	Balance		Rate		Balance		Rate		$		%
Short-term borrowings:	(dollars in thousands)
Customer funding(1)	$	570,775	0.13	%	$	428,242	0.58	%	$	142,533	33.3	%
Federal funds purchased	—		—		186,868		1.12		(186,868)		(100.0)
FHLB advances and other borrowings (2)	—		—		687,937		1.70		(687,937)		(100.0)
Total short-term borrowings	570,775		0.13		1,303,047		1.25		(732,272)		(56.2)
Long-term borrowings:
FHLB advances	513,744		1.80		556,951		1.93		(43,207)		(7.8)
Other long-term debt	757,426		4.44		506,263		4.30		251,163		49.6
Total long-term borrowings	1,271,170		3.38		1,063,214		3.06		207,956		19.6
Total borrowings	$	1,841,945	2.37	%	$	2,366,261	2.06	%	$	(524,316)	(22.2)	%

(1) Includes repurchase agreements and short-term promissory notes.

(2) Consists of FHLB advances and other borrowings with original terms of less than one year.

Average total short-term borrowings decreased $732.3 million, or 56.2%, primarily as a result of a $687.9 million decrease in FHLB advances and other borrowings and a $186.9 million decrease in federal funds purchased, partially offset by a $142.5 million increase in customer funding. These decreases resulted from excess funding provided by higher deposit balances. The decrease in short-term borrowings and the lower rates contributed $3.9 million to the decrease in interest expense.

Average total long-term borrowings increased $208.0 million, or 19.6%, in the first quarter of 2021, compared to the same period of 2020, primarily as a result of the issuances of $375.0 million of subordinated notes in March of 2020. As noted above, the Corporation completed a balance sheet restructuring in March of 2021, which included the prepayment of $536.0 million of long-term FHLB advances and the cash tender offer for $75.0 million and $60.0 million of the Corporation's outstanding subordinated and senior notes, respectively. This reduction in long-term borrowings had a limited impact on average balances for the first quarter of 2021.

Provision for Credit Losses

The provision for credit losses was a negative $5.5 million for the first quarter of 2021, a decrease of $49.5 million from the same period of 2020. Several factors as of the end of the first quarter of 2021 in comparison to the end of the fourth quarter of 2020, including improved economic forecasts and a decrease in specific allocations within the ACL for loans evaluated individually, reduced the level of the ACL determined to be necessary at the end of the first quarter of 2021, resulting in the negative provision for credit losses for the first quarter of 2021. The $44.0 million provision expense for credit losses in the first quarter of 2020 was primarily driven by the assessment of the initial estimated impacts of COVID-19, as reflected in economic forecasts as of the end of the first quarter of 2020, on the level of expected credit losses.

50

Non-Interest Income

The following table presents the components of non-interest income:

	Three months ended March 31				Increase (Decrease)
	2021		2020		$		%
	(dollars in thousands)
Commercial banking:
Merchant and card	$	5,768	$	5,624	$	144	2.6	%
Cash management	4,921		4,742		179		3.8
Capital markets	2,800		5,075		(2,275)		(44.8)
Other commercial banking	2,853		2,978		(125)		(4.2)
Total commercial banking	16,342		18,419		(2,077)		(11.3)
Consumer banking:
Card	5,878		4,685		1,193		25.5
Overdraft	2,724		4,058		(1,334)		(32.9)
Other consumer banking	2,152		2,496		(344)		(13.8)
Total consumer banking	10,754		11,239		(485)		(4.3)
Wealth management fees	17,347		15,055		2,292		15.2
Mortgage banking:
Gains on sales of mortgage loans	8,656		6,181		2,475		40.0
Mortgage servicing income	5,304		53		5,251		N/M
Total mortgage banking	13,960		6,234		7,726		123.9
Other	3,519		3,651		(132)		(3.6)
Non-interest income before investment securities gains	61,922		54,598		7,324		13.4
Investment securities gains, net	33,475		46		33,429		N/M
Total Non-Interest Income	$	95,397	$	54,644	$	40,753	74.6	%

Non-interest income, before net investment securities gains, increased $7.3 million, or 13.4%, in the first quarter of 2021 as compared to the same period in 2020. The increase was the net result of the following items:

•Total commercial banking income decreased $2.1 million, or 11.3%, compared to the same period in 2020, driven by decreases in capital markets revenue, which consists primarily of commercial loan interest rate swaps;

•Total consumer banking income decreased $485,000, or 4.3%, compared to the same period in 2020, primarily driven by lower overdraft fees, which was partially offset by increased card income;

•Wealth management revenues increased $2.3 million, or 15.2%, primarily resulting from growth in brokerage income due to an increase in client asset levels and improved overall market performance; and,

•Mortgage banking income increased $7.7 million, or 123.9%, driven by an increase in mortgage servicing income and gains on sales of mortgage loans. The increase in mortgage servicing income was driven by a $6.1 million decrease to the valuation allowance for MSRs compared to a $1.1 million increase to the valuation allowance for the same period in 2020.

Investment securities gains, net, were $33.5 million in the first quarter of 2021 as a result of a $34.0 million gain on the sale of Visa Shares, partially offset by losses on other securities sold. The sale of the Visa Shares was part of the balance sheet restructuring as discussed in the "Overview" section of Management's Discussion.

51

Non-Interest Expense

The following table presents the components of non-interest expense:

	Three months ended March 31				Increase (Decrease)
	2021		2020		$		%
	(dollars in thousands)
Salaries and employee benefits	$	82,586	$	80,228	$	2,358	2.9	%
Net occupancy	13,982		13,486		496		3.7
Data processing and software	13,561		11,645		1,916		16.5
Other outside services	8,490		7,881		609		7.7
Professional fees	2,779		4,202		(1,423)		(33.9)
Equipment	3,428		3,418		10		0.3
State taxes	4,505		2,804		1,701		60.7
FDIC insurance	2,624		2,808		(184)		(6.6)
Marketing	1,002		1,579		(577)		(36.5)
Amortization of TCI	1,531		1,450		81		5.6
Intangible amortization	115		132		(17)		(12.9)
Debt extinguishment	32,163		—		32,163		N/M
Other	11,618		12,919		(1,301)		(10.1)
Total non-interest expense	$	178,384	$	142,552	$	35,832	25.1	%

Salaries and employee benefits increased $2.4 million, or 2.9%, primarily due to recognition of higher variable compensation plan expense in 2021 as a result of the Corporation's improved financial performance.

Data processing and software increased $1.9 million, or 16.5%, reflecting costs related to technology initiatives.

Professional fees decreased $1.4 million, or 33.9%, primarily due to a decrease in legal fees. The Corporation incurs fees related to various legal matters in the normal course of business. These fees can fluctuate based on timing and the extent of these matters.

State taxes increased $1.7 million, or 60.7%, primarily as a result of an increase in the accrual for PA shares tax expense.

Marketing expense decreased $577,000, or 36.5%, as a result of reduced marketing campaigns during the quarter.

Debt extinguishment costs totaled $32.2 million as a result of $20.9 million in prepayment penalties incurred upon the prepayment of long-term FHLB advances and $11.3 million of expenses associated with the cash tender offer to purchase subordinated and senior notes as part of the balance sheet restructuring discussed in the "Overview" section of Management's Discussion.

Income Taxes

Income tax expense for the three months ended March 31, 2021 was $13.9 million, an $11.1 million increase from $2.8 million for the same period in 2020. The Corporation’s ETR was 16.0% for the three months ended March 31, 2021, compared to 9.6% in the same period of 2020. The increase in income tax expense primarily resulted from an increase in income before taxes. The ETR is generally lower than the federal statutory rate of 21% due to tax-exempt interest income earned on loans, investments in tax-free municipal securities and investments in community development projects that generate tax credits under various federal programs.

.

52

FINANCIAL CONDITION

The table below presents condensed consolidated ending balance sheets.

	March 31, 2021		December 31, 2020		Increase (Decrease)
					$		%
Assets	(dollars in thousands)
Cash and cash equivalents	$	1,661,876	$	1,847,832	$	(185,956)	(10.1)	%
FRB and FHLB Stock	66,209		92,129		(25,920)		(28.1)
Loans held for sale	34,092		83,886		(49,794)		(59.4)
Investment securities	3,612,010		3,340,424		271,586		8.1
Net Loans	18,725,000		18,623,253		101,747		0.5
Premises and equipment	229,035		231,480		(2,445)		(1.1)
Goodwill and intangibles	536,544		536,659		(115)		—
Other assets	1,028,224		1,151,070		(122,846)		(10.7)
Total Assets	$	25,892,990	$	25,906,733	$	(13,743)	(0.1)	%
Liabilities and Shareholders’ Equity
Deposits	$	21,633,838	$	20,839,207	$	794,631	3.8	%
Short-term borrowings	520,989		630,066		(109,077)		(17.3)
Long-term borrowings	626,407		1,296,263		(669,856)		(51.7)
Other liabilities	482,101		524,369		(42,268)		(8.1)
Total Liabilities	23,263,335		23,289,905		(26,570)		(0.1)
Total Shareholders’ Equity	2,629,655		2,616,828		12,827		0.5
Total Liabilities and Shareholders’ Equity	$	25,892,990	$	25,906,733	$	(13,743)	(0.1)	%

Cash and Cash Equivalents

The $186.0 million, or 10.1%, decrease in cash and cash equivalents mainly resulted from cash used in the balance sheet restructuring which included the cash tender offer for certain of the Corporation's outstanding senior and subordinated notes and the prepayment of certain term FHLB advances as discussed in the "Overview" section of Management's Discussion.

FRB and FHLB Stock

The $25.9 million, or 28.1%, decrease in FRB and FHLB stock was the result of a decrease in FHLB stock required due to the prepayment of the long-term FHLB advances as mentioned above and in the "Overview" section of Management's Discussion.

Loans Held for Sale

Loans held for sale decreased $49.8 million, or 59.4%, primarily as the result of the Corporation's decision to hold, rather than sell in the secondary market, a greater proportion of the residential mortgage loans it originated in the loan portfolio on its balance sheet.

53

Investment Securities

The following table presents the carrying amount of investment securities:

	March 31, 2021		December 31, 2020		Increase (Decrease)
					$		%
Available for Sale	(dollars in thousands)
State and municipal securities	$	994,760	$	952,613	$	42,147	4.4	%
Corporate debt securities	359,371		367,145		(7,774)		(2.1)
Collateralized mortgage obligations	399,881		503,766		(103,885)		(20.6)
Residential mortgage-backed securities	255,364		377,998		(122,634)		(32.4)
Commercial mortgage-backed securities	673,017		762,415		(89,398)		(11.7)
Auction rate securities	76,204		98,206		(22,002)		(22.4)
Total available for sale securities	$	2,758,597	$	3,062,143	$	(303,546)	(9.9)	%
Held to Maturity
Residential mortgage-backed securities	$	467,461	$	278,281	$	189,180	68.0	%
Commercial mortgage-backed securities	385,952		—		385,952		N/M
Total held to maturity securities	$	853,413	$	278,281	$	575,132	N/M
Total Investment Securities	$	3,612,010	$	3,340,424	$	271,586	8.1	%

Total AFS securities decreased $303.5 million, or 9.9%, primarily as the result of $376.2 million of residential and commercial mortgage backed securities transferred from the AFS classification to the HTM classification. In addition, the Corporation sold ARCs with an estimated fair value of $24.6 million during the first quarter of 2021.

Total HTM securities increased $575.1 million, primarily as a result of the above mentioned transfer of AFS securities as well as purchases of additional mortgage-backed securities.

Loans

The following table presents ending balances of Net Loans:

	March 31, 2021		December 31, 2020		2021 vs. 2020 Increase (Decrease)
					$		%
	(dollars in thousands)
Real estate – commercial mortgage	$	7,142,137	$	7,105,092	$	37,045	0.5	%
Commercial and industrial (1)	5,675,714		5,670,828		4,886		0.1
Real estate – residential mortgage	3,254,058		3,141,915		112,143		3.6
Real estate – home equity	1,149,958		1,202,913		(52,955)		(4.4)
Real estate – construction	1,083,494		1,047,218		36,276		3.5
Consumer	451,857		466,772		(14,915)		(3.2)
Equipment lease financing and other	252,930		284,377		(31,447)		(11.1)
Overdrafts	1,373		4,806		(3,433)		(71.4)
Gross loans	19,011,521		18,923,921		87,600		0.5
Unearned income	(20,535)		(23,101)		2,566		(11.1)
Net Loans	$	18,990,986	$	18,900,820	$	90,166	0.5	%

(1) Includes PPP loans totaling $1.7 billion and $1.6 billion as of March 31, 2021 and December 31, 2020, respectively.

Net Loans increased $90.2 million, or 0.5%, in comparison to December 31, 2020, primarily due to growth in commercial and residential mortgage loans, construction loans and commercial and industrial loans, partially offset by decreases in home equity and consumer loans and equipment lease financing. The increase in the residential mortgage portfolio was the result of continued growth in originations and the strategic decision by the Corporation to hold a greater proportion of the originations on its balance sheet.

54

The increase in commercial and industrial loans was primarily driven by the net effect of approximately $579 million of PPP loans forgiven and approximately $685 million on new PPP loans originated during the first quarter of 2021.

Construction loans include loans to commercial borrowers secured by commercial real estate, loans to commercial borrowers secured by residential real estate, and other construction loans, which are loans to individuals secured by residential real estate. Approximately $8.2 billion, or 43.3%, of the loan portfolio was in commercial mortgage and construction loans as of March 31, 2021. The Corporation's internal policy limited its maximum total lending commitment to an individual borrowing relationship to $55 million as of March 31, 2021. In addition, the Corporation has established lower total lending limits for certain types of lending commitments, and lower total lending limits based on the Corporation's internal risk rating of an individual borrowing relationship at the time the lending commitment is approved.

The Corporation has limited exposure to some of the industries that were initially most significantly impacted by COVID-19, such as hospitality, energy and entertainment, and most of these loans are secured by real estate and other forms of collateral. The following table summarizes the industry concentrations within the commercial mortgage and the commercial and industrial loan portfolios:

	March 31, 2021		December 31, 2020
Real estate (1)	41.7	%	41.4	%
Health care	8.3		8.7
Agriculture	6.2		6.4
Manufacturing	5.8		6.3
Construction (2)	5.4		6.4
Other services (3)	5.1		5.1
Hospitality and food services	4.0		4.2
Retail	3.3		3.8
Educational services	3.2		3.3
Wholesale trade	3.1		3.3
Professional, scientific and technical services	2.9		3.6
Arts, entertainment and recreation	2.6		2.4
Transportation and warehousing	1.6		1.7
Public administration	1.5		1.7
Other (4) (5)	5.3		1.7
Total	100.0	%	100.0	%

(1)     Includes commercial loans to borrowers engaged in the business of: renting, leasing or managing real estate for others; selling and/or buying real estate for others; and appraising real estate.

(2)     Includes commercial loans to borrowers engaged in the construction industry.

(3)    Excludes public administration.

(4)    Includes the energy sector.

(5)    Includes $774.7 million of PPP loans, primarily those originated during the first quarter of 2021, as of March 31, 2021 and $136.7 million of PPP loans as of December 31, 2020. The remaining PPP loans were include within their respective industry classification above as of both March 31, 2021 and December 31, 2020.

55

The following table presents the changes in non-accrual loans for the three months ended March 31, 2021:

	Commercial  and Industrial		Real Estate - Commercial Mortgage		Real Estate - Construction		Real Estate - Residential Mortgage		Real Estate - Home Equity		Consumer		Equipment Lease Financing		Total
	(in thousands)
Three months ended March 31, 2021
Balance at December 31, 2020	$	31,993	$	51,470	$	1,395	$	26,107	$	9,588	$	332	$	16,312	$	137,197
Additions	9,910		6,062		404		7,644		621		625		173		25,439
Payments	(5,870)		(3,249)		(319)		(158)		(355)		(21)		(52)		(10,024)
Charge-offs	(4,319)		(1,837)		(39)		(192)		(212)		(635)		(684)		(7,918)
Transfers to accrual status	—		—		—		—		(274)		—		—		(274)
Transfers to OREO	(62)		(469)		—		—		—		—		—		(531)
Balance at March 31, 2021	$	31,652	$	51,977	$	1,441	$	33,401	$	9,368	$	301	$	15,749	$	143,889

Non-accrual loans increased approximately $6.7 million, or 4.9%, in comparison to December 31, 2020, primarily as a result of additions to non-accrual loans during the period, partially offset by payments and charge-offs.

The following table summarizes non-performing assets as of the indicated dates:

	March 31, 2021			December 31, 2020
	(dollars in thousands)
Non-accrual loans	$	143,889		$	137,198
Loans 90 days or more past due and still accruing	8,559			9,929
Total non-performing loans	152,448			147,127
OREO (1)	3,664			4,178
Total non-performing assets	$	156,112		$	151,305
Non-performing loans to total loans	0.80		%	0.78		%
Non-performing assets to total assets	0.60		%	0.58		%
ACL - loans to non-performing loans	174		%	189		%

(1) Excludes $7.6 million and $8.1 million of residential mortgage properties for which formal foreclosure proceedings were in process as of March 31, 2021 and December 31, 2020, respectively

Non-performing loans increased $5.3 million, or 3.6%, in comparison to December 31, 2020. Non-performing loans as a percentage of total loans were 0.80% at March 31, 2021 in comparison to 0.78% at December 31, 2020. See Note 4, "Loans and Allowance for Credit Losses," in the Notes to Consolidated Financial Statements for further details on non-performing loans.

The following table presents loans whose terms have been modified under TDRs, by type, as of the indicated dates:

	March 31, 2021		December 31, 2020
	(in thousands)
Real estate - commercial mortgage	$	27,961	$	28,451
Commercial and industrial	7,041		6,982
Real estate - residential mortgage	18,214		18,602
Real estate - home equity	13,674		14,391
Real estate - construction	154		—
Consumer	5		—
Total accruing TDRs	67,049		68,426
Non-accrual TDRs (1)	44,986		35,755
Total TDRs	$	112,035	$	104,181

(1) Included with non-accrual loans in the preceding table.

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The ability to identify potential problem loans in a timely manner is important to maintaining an adequate ACL. For commercial loans, commercial mortgages and construction loans to commercial borrowers, an internal risk rating process is used to monitor credit quality. The evaluation of credit risk for residential mortgages, home equity loans, construction loans to individuals and consumer loans is based on payment history, through the monitoring of delinquency levels and trends. For a description of the Corporation's risk ratings, see Note 4, "Loans and Allowance for Credit Losses," in the Notes to Consolidated Financial Statements.

Total internally risk-rated loans were $13.8 billion, of which $1.0 billion were criticized and classified, as of March 31, 2021, and $13.7 billion, of which $961.1 million were criticized and classified, as of December 31, 2020. The following table presents internal risk ratings for commercial and industrial loans, real estate - commercial mortgages and real estate - construction loans to commercial borrowers with internal risk ratings of Special Mention (1) or Substandard or lower (2):

	Special Mention (1)						Increase (Decrease)				Substandard or Lower (2)						Increase (Decrease)				Total Criticized and Classified Loans
	March 31, 2021			December 31, 2020			$		%		March 31, 2021			December 31, 2020			$		%		March 31, 2021			December 31, 2020
	(dollars in thousands)
Real estate - commercial mortgage	$	472,937		$	478,165		$	(5,228)	(1.1)	%	$	260,167		$	181,970		$	78,197	43.0	%	$	733,104		$	660,135
Commercial and industrial	136,778			154,039			(17,261)		(11.2)		123,003			128,175			(5,172)		(4.0)		259,781			282,214
Real estate - construction (3)	13,305			13,259			46		0.3		6,056			5,469			587		10.7		19,361			18,728
Total	$	623,020		$	645,463		$	(22,443)	(3.5)	%	$	389,226		$	315,614		$	73,612	23.3	%	$	1,012,246		$	961,077
% of total risk rated loans	4.5		%	4.7		%					2.8		%	2.3		%					7.4		%	7.0		%

(1) Considered "criticized" loans by banking regulators

(2) Considered "classified" loans by banking regulators

(3) Excludes construction - other

The increase in loans with internal risk ratings of substandard or lower that occurred during the three months ended March 31, 2021 was attributed to risk rating downgrades due to COVID-19 related shutdowns and restrictions on operations, mostly impacting the hospitality and food services and arts, entertainment and recreation sectors.

Provision and Allowance for Credit Losses

The following table presents the components of the ACL:

	March 31, 2021			December 31, 2020
	(dollars in thousands)
ACL - loans	$	265,986		$	277,567
ACL - OBS credit exposure (1)	14,273			14,373
Total ACL	$	280,259		$	291,940
Total ACL to Net Loans	1.48		%	1.54		%

(1) Included in "other liabilities" on the consolidated balance sheet.

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The following table presents the activity in the ACL related to loans:

	Three months ended March 31
	2021			2020
	(dollars in thousands)
Average balance of Net Loans	$	18,980,586		$	16,860,067
Balance of ACL at beginning of period	$	277,567		$	163,622
Impact of adopting CECL on January 1, 2020	—			45,723
Loans charged off:
Real estate – commercial mortgage	1,837			855
Commercial and industrial	4,319			10,899
Real estate – residential mortgage	192			187
Real estate – home equity	212			316
Real estate – construction	39			—
Consumer	635			1,213
Equipment lease financing and other	968			533
Total loans charged off	8,202			14,003
Recoveries of loans previously charged off:
Real estate – commercial mortgage	174			244
Commercial and industrial	769			1,734
Real estate – residential mortgage	95			85
Real estate – home equity	51			646
Real estate – construction	384			70
Consumer	389			—
Equipment lease financing and other	159			108
Total recoveries	2,021			2,887
Net loan charged off	6,181			11,116
Provision for credit losses (1)	(5,400)			40,279
Balance of ACL at end of period	$	265,986		$	238,508
Net charge-offs to average loans (annualized)	0.13		%	0.26		%

(1) Provision for credit losses included in the table only includes the portion related to loans.

The provision for credit losses, specific to loans, for the three months ended March 31, 2021 was a negative of $5.4 million compared to a provision expense of $40.3 million recorded in the same period of 2020. Several factors as of the end of the first quarter of 2021 in comparison to the end of the fourth quarter of 2020, including improved economic forecasts and a decrease in specific allocations within the ACL for loans evaluated individually, reduced the level of the ACL determined to be necessary at the end of the first quarter of 2021, resulting in the negative provision for credit losses for the first quarter of 2021. The higher provision during the first three months of 2020 was largely driven by the overall downturn in economic forecasts due to COVID-19, resulting in higher expected future credit losses under CECL. The ACL includes qualitative adjustments, as appropriate, intended to capture the impact of uncertainties not reflected in the quantitative models. See Note 4, "Loans and Allowance for Credit Losses," in the Notes to Consolidated Financial Statements for further details on the provision for credit losses.

In addition, net loan charge offs in the three months ended March 31, 2021 were an improvement of $4.9 million compared to the same period of 2020.

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The following table summarizes the allocation of the ACL - loans:

	March 31, 2021				December 31, 2020
	ACL - loans		% In Each Loan Category (1)		ACL - loans		% In Each Loan Category (1)
	(dollars in thousands)
Real estate - commercial mortgage	$	100,976	37.5	%	$	103,425	37.6	%
Commercial and industrial	71,194		29.9		74,771		30.0
Real estate - residential mortgage	49,995		17.1		51,995		16.6
Consumer, home equity, equipment lease financing	28,744		9.8		31,770		10.3
Real estate - construction	15,079		5.7		15,608		5.5
Total ACL - loans	$	265,986	100.0	%	$	277,567	100.0	%

(1) Ending loan balances as a % of total loans for the periods presented.

Other Assets

Other assets decreased $122.8 million, or 10.7%, primarily due to a decrease in fair values of derivative contracts for commercial loan interest rate swaps.

Deposits and Borrowings

The following table presents ending deposits, by type:

	March 31, 2021		December 31, 2020		Increase (Decrease)
					$		%
	(dollars in thousands)
Noninterest-bearing demand	$	7,046,116	$	6,531,002	$	515,114	7.9	%
Interest-bearing demand	5,959,909		5,818,564		141,345		2.4
Savings	6,244,513		5,929,792		314,721		5.3
Total demand and savings	19,250,538		18,279,358		971,180		5.3
Brokered deposits	309,873		335,185		(25,312)		(7.6)
Time deposits	2,073,427		2,224,664		(151,237)		(6.8)
Total deposits	$	21,633,838	$	20,839,207	$	794,631	3.8	%

Total demand and savings accounts increased $1.0 billion, or 5.3%, driven by increases in all categories, primarily as the result of strong customer liquidity. These increases were partially offset by decreases in brokered and time deposits.

The following table presents ending borrowings, by type:

	March 31, 2021		December 31, 2020		Increase (Decrease)
					$		%
	(dollars in thousands)
Short-term borrowings:
Customer funding (1)	$	520,989	$	630,066	$	(109,077)	(17.3)	%
Total short-term borrowings	520,989		630,066		(109,077)		(17.3)
Long-term borrowings:
FHLB advances	—		535,973		(535,973)		(100.0)
Other long-term borrowings	626,407		760,290		(133,883)		(17.6)
Total long-term borrowings	626,407		1,296,263		(669,856)		(51.7)
Total borrowings	$	1,147,396	$	1,926,329	$	(778,933)	(40.4)	%

(1) Includes repurchase agreements and short-term promissory notes.

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Total short-term borrowings decreased $109.1 million, or 17.3%. The decrease in short-term borrowings was a result of higher balances of deposits, reducing the need for short-term borrowings. As discussed in the "Overview" section of Management's Discussion, as part of a balance sheet restructuring, the Corporation prepaid $536.0 million of long-term FHLB advances and completed a cash tender offer for $75.0 million of 4.50% subordinated debt due in 2024 and $60.0 million of 3.60% senior notes due in 2022. Also, See Note 14, "Long-Term Debt," in the Notes to Consolidated Financial Statements for further details.

Other Liabilities

Other liabilities decreased $42.3 million, or 8.1%, primarily as the result of a decrease in the fair values of derivative contracts related to commercial loan interest rate swaps.

Shareholders' Equity

Total shareholders’ equity increased $12.8 million during the first three months of 2021. The increase was due primarily to $73.1 million of net income, partially offset by a $39.3 million decrease in accumulated other comprehensive income, mainly due to declines in fair values of AFS securities, $22.8 million of common stock cash dividends and $2.6 million of preferred stock dividends.

In February 2021, the Corporation's board of directors approved a share repurchase program pursuant to which the Corporation is authorized to repurchase up to $75.0 million of its outstanding shares of common stock, or approximately 3.2% of its outstanding shares, through December 31, 2021. Under the repurchase program, repurchased shares are added to treasury stock, at cost. As permitted by securities laws and other legal requirements, and subject to market conditions and other factors, purchases may be made from time to time in open market or privately negotiated transactions, including, without limitation, through accelerated share repurchase transactions. The repurchase program may be discontinued at any time. No repurchases of common stock were made under this program during the three months ended March 31, 2021.

Regulatory Capital

The Corporation and its subsidiary bank, Fulton Bank, are subject to regulatory capital requirements ("Capital Rules") administered by banking regulators. Failure to meet minimum capital requirements could result in certain actions by regulators that could have a material effect on the Corporation’s financial statements.

The Capital Rules require the Corporation and Fulton Bank to:

•Meet a minimum Common Equity Tier 1 capital ratio of 4.50% of risk-weighted assets;

•Meet a minimum Tier 1 Leverage capital ratio of 4.00% of average assets;

•Meet a minimum Total capital ratio of 8.00% of risk-weighted assets and a minimum Tier 1 capital ratio of 6.00% of risk-weighted assets;

•Maintain a "capital conservation buffer" of 2.50% above the minimum risk-based capital requirements, which must be maintained to avoid restrictions on capital distributions and certain discretionary bonus payments; and

•Comply with a revised definition of capital to improve the ability of regulatory capital instruments to absorb losses. Certain non-qualifying capital instruments, including cumulative preferred stock and TruPS, are excluded as a component of Tier 1 capital for institutions of the Corporation's size.

The Capital Rules use a standardized approach for risk weightings that expands the risk-weightings for assets and off-balance sheet exposures from the previous 0%, 20%, 50% and 100% categories to a much larger and more risk-sensitive number of categories, depending on the nature of the assets and off-balance sheet exposures and resulting in higher risk weightings for a variety of asset categories.

As of March 31, 2021, the Corporation's capital levels met the fully phased-in minimum capital requirements, including the capital conservation buffers, as prescribed in the Capital Rules.

In March 2020, the banking regulators amended the optional CECL Transition Rule to allow banks to add back to regulatory capital the decrease recorded to retained earnings at the CECL adoption date, or January 1, 2020 for the Corporation, plus 25% of additions to the ACL over the next two years. These amounts will then be phased in as reductions to regulatory capital over

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the following three years, or 2022 - 2024. Prior to this amendment, the regulatory capital impact of adopting CECL was to be phased in over a 3-year period beginning in 2020. The Corporation elected to apply the amended rule to the regulatory capital treatment for the adoption of CECL.

As of March 31, 2021, Fulton Bank met the well capitalized requirements under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Bank must maintain minimum total risk-based, Tier I risk-based, Common Equity Tier I risk-based and Tier I leverage ratios as set forth in the regulation. There were no other conditions or events since March 31, 2021 that management believes have changed the Corporation's capital categories.

The following table summarizes the Corporation’s capital ratios in comparison to regulatory requirements:

	March 31, 2021		December 31, 2020		Regulatory Minimum for Capital Adequacy		Fully Phased-in, with Capital Conservation Buffers
Total Capital (to Risk-Weighted Assets)	14.3	%	14.4	%	8.0	%	10.5	%
Tier I Capital (to Risk-Weighted Assets)	10.7	%	10.5	%	6.0	%	8.5	%
Common Equity Tier I (to Risk-Weighted Assets)	9.7	%	9.5	%	4.5	%	7.0	%
Tier I Leverage Capital (to Average Assets)	8.2	%	8.2	%	4.0	%	4.0	%

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Market risk is the exposure to economic loss that arises from changes in the values of certain financial instruments. The types of market risk exposures generally faced by financial institutions include interest rate risk, equity market price risk, debt security market price risk, foreign currency price risk and commodity price risk. Due to the nature of its operations, foreign currency price risk and commodity price risk are not significant to the Corporation.

Interest Rate Risk, Asset/Liability Management and Liquidity

Interest rate risk creates exposure in two primary areas. First, changes in rates have an impact on the Corporation’s liquidity position and could affect its ability to meet obligations and continue to grow. Second, movements in interest rates can create fluctuations in the Corporation’s net interest income and changes in the economic value of its equity.

The Corporation employs various management techniques to minimize its exposure to interest rate risk. An ALCO is responsible for reviewing the interest rate sensitivity and liquidity positions of the Corporation, approving asset and liability management policies, and overseeing the formulation and implementation of strategies regarding balance sheet positions.

Simulation of net interest income is performed for the next 12-month period. A variety of interest rate scenarios are used to measure the effects of sudden and gradual movements upward and downward in the yield curve. These results are compared to the results obtained in a flat or unchanged interest rate scenario. Simulation of net interest income is used primarily to measure the Corporation’s short-term earnings exposure to rate movements. The Corporation’s policy limits the potential exposure of net interest income, in a non-parallel instantaneous shock, to 10% of the base case net interest income for a 100 bp shock in interest rates, 15% for a 200 bp shock, 20% for a 300 bp shock and 25% for a 400 bp shock. A "shock" is an immediate upward or downward movement of interest rates. The shocks do not take into account changes in customer behavior that could result in changes to mix and/or volumes in the balance sheet, nor does it take into account the potential effects of competition on the pricing of deposits and loans over the forward 12-month period.

Contractual maturities and repricing opportunities of loans are incorporated in the simulation model as are prepayment assumptions, maturity data and call options within the investment portfolio. Assumptions based on past experience are incorporated into the model for non-maturity deposit accounts. The assumptions used are inherently uncertain and, as a result, the model cannot precisely measure future net interest income or precisely predict the impact of fluctuations in market interest rates on net interest income. Actual results will differ from the model's simulated results due to timing, amount and frequency of interest rate changes as well as changes in market conditions and the application and timing of various management strategies.

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The following table summarizes the expected impact of abrupt interest rate changes, that is, a non-parallel instantaneous shock, on net interest income as of March 31, 2021 (due to the current level of interest rates, the downward shock scenarios are not shown):

Rate Shock(1)	Annual change in net interest income	% change in net interest income
+400 bp	+ $171.7 million	24.1%
+300 bp	+ $128.9 million	18.1%
+200 bp	+ $85.7 million	12.1%
+100 bp	+ $41.5 million	5.8%

(1)These results include the effect of implicit and explicit interest rate floors that limit further reduction in interest rates.

Interest Rate Swaps

The Corporation enters into interest rate swaps with certain qualifying commercial loan customers to meet their interest rate risk management needs. The Corporation simultaneously enters into interest rate swaps with dealer counterparties, with identical notional amounts and terms. The net result of these interest rate swaps is that the customer pays a fixed rate of interest and the Corporation receives a floating rate. These interest rate swaps are derivative financial instruments and the gross fair values are recorded in other assets and liabilities on the consolidated balance sheets, with changes in fair value during the period recorded in other non-interest expense on the consolidated statements of income.

Cash Flow Hedges of Interest Rate Risk

The Corporation’s objectives in using interest rate derivatives are to reduce volatility in net interest income and to manage its exposure to interest rate movements. To accomplish this objective, the Corporation primarily uses interest rate swaps as part of its interest rate risk management strategy. During the first quarter of 2021, the Corporation entered into interest rate swaps designated as cash flow hedges to hedge the variable cash flows associated with existing floating rate loans. These hedge contracts involve the receipt of fixed-rate amounts from a counterparty in exchange for the Corporation making floating-rate payments over the life of the agreements without exchange of the underlying notional amount.

Liquidity

The Corporation must maintain a sufficient level of liquid assets to meet the cash needs of its customers, who, as depositors, may want to withdraw funds or who, as borrowers, need credit availability. Liquidity is provided on a continuous basis through scheduled and unscheduled principal and interest payments on investments and outstanding loans and through the availability of deposits and borrowings. The Corporation also maintains secondary sources that provide liquidity on a secured and unsecured basis to meet short-term and long-term needs.

The Corporation maintains liquidity sources in the form of interest-bearing deposits and customer funding (repurchase agreements and short-term promissory notes). The Corporation can access additional liquidity from these sources, if necessary, by increasing the rates of interest paid on those instruments. The positive impact to liquidity resulting from paying higher interest rates could have a detrimental impact on the net interest margin and net interest income if rates on interest-earning assets do not experience a proportionate increase. Borrowing availability with the FHLB and the FRB, along with federal funds lines at various correspondent banks, provides the Corporation with additional liquidity.

Fulton Bank is a member of the FHLB and has access to FHLB overnight and term credit facilities. As of March 31, 2021, the Corporation had $3.0 million of borrowings outstanding from the FHLB with an additional borrowing capacity of approximately $5.2 billion under these facilities. Advances from the FHLB are secured by qualifying commercial real estate and residential mortgage loans, investments and other assets.

As of March 31, 2021, the Corporation had aggregate federal funds lines of $2.1 billion, with no outstanding borrowings. A combination of commercial real estate loans, commercial loans and securities are pledged to the FRB of Philadelphia to provide access to FRB Discount Window borrowings. As of March 31, 2021, the Corporation had $351.9 million of collateralized borrowing availability at the Discount Window, and no outstanding borrowings.

Liquidity must also be managed at the Corporation parent company level. For safety and soundness reasons, banking regulations limit the amount of cash that can be transferred from a subsidiary bank to the parent company in the form of loans

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and dividends. Generally, these limitations are based on the subsidiary bank's regulatory capital levels and its net income. Management continues to monitor the liquidity and capital needs of the parent company and will implement appropriate strategies, as necessary, to remain sufficiently capitalized and to meet its cash needs.

The Corporation’s sources and uses of funds were discussed in general terms in the "Net Interest Income" section of Management’s Discussion and Analysis. The consolidated statements of cash flows provide additional information. The Corporation’s operating activities during the first three months of 2021 provided $203.4 million of cash, mainly due to net income of $73.1 million, partially offset by the net impact of other operating activities. Cash used in investing activities was $351.0 million, mainly due to net increases in investments and loans. Cash used in financing activities was $38.4 million due mainly to the repayments of long-term borrowings and decreases in time deposits, partially offset by increases in demand and savings deposits.

Debt Security Market Price Risk

Debt security market price risk is the risk that changes in the values of debt securities, unrelated to interest rate changes, could have a material impact on the financial position or results of operations of the Corporation. The Corporation’s debt security investments consist primarily of U.S. government sponsored agency issued residential mortgage-backed and commercial mortgage-backed securities and collateralized mortgage obligations, state and municipal securities, auction rate securities and corporate debt securities. All of the Corporation's investments in residential mortgage-backed and commercial mortgage-backed and collateralized mortgage obligations have principal payments that are guaranteed by U.S. government sponsored agencies.

State and Municipal Securities

As of March 31, 2021, the Corporation owned securities issued by various states and municipalities with a total a fair value of $994.8 million. Uncertainty with respect to the financial strength of state and municipal bond insurers places emphasis on the underlying strength of issuers. Pressure on local tax revenues of issuers due to adverse economic conditions could have an adverse impact on the underlying credit quality of issuers. The Corporation evaluates existing and potential holdings primarily based on the underlying creditworthiness of the issuing state or municipality and then, to a lesser extent, on any credit enhancement. State and municipal securities can be supported by the general obligation of the issuing state or municipality, allowing the securities to be repaid by any means available to the issuing state or municipality. As of March 31, 2021, approximately all of state and municipal securities were supported by the general obligation of corresponding states or municipalities. Approximately 64% of these securities were school district issuances, which are also supported by the states of the issuing municipalities.

Auction Rate Securities

As of March 31, 2021, the Corporation’s investments in ARCs had a cost basis of $76.4 million and an estimated fair value of $76.2 million. The fair values of the ARCs currently in the portfolio were derived using significant unobservable inputs based on an expected cash flows model which produced fair values that may not represent those that could be expected from settlement of these investments in the current market. The expected cash flows model produced fair values which assumed a return to market liquidity sometime within the next five years. The Corporation believes that the trusts underlying the ARCs will self-liquidate as student loans are repaid.

The credit quality of the underlying debt associated with the ARCs is also a factor in the determination of their estimated fair value. As of March 31, 2021, all of the ARCs were rated above investment grade. All of the loans underlying the ARCs have principal payments which are guaranteed by the federal government. At March 31, 2021, all of the Corporation's ARCs were current and making scheduled interest payments.

Item 4. Controls and Procedures

The Corporation carried out an evaluation, under the supervision and with the participation of the Corporation’s management, including the Corporation’s Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Corporation’s disclosure controls and procedures pursuant to Rule 13a-15, promulgated under the Securities Exchange Act of 1934 (the "Exchange Act"). Based upon that evaluation, the Corporation’s Chief Executive Officer and Chief Financial Officer concluded that, as of the end of the period covered by this quarterly report, the Corporation’s disclosure controls and procedures are effective. Disclosure controls and procedures are controls and procedures that are designed to ensure that information required to be disclosed in Corporation reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the U.S. Securities and Exchange Commission’s rules and forms.

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There have been no changes in the Corporation’s internal control over financial reporting during the fiscal quarter covered by this quarterly report that have materially affected, or are reasonably likely to materially affect, the Corporation’s internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1. Legal Proceedings

The information presented in the "Legal Proceedings" section of Note 13 "Commitments and Contingencies" of the Notes to Consolidated Financial Statements is incorporated herein by reference.

Item 1A. Risk Factors

There have been no material changes to the risk factors previously disclosed in Part I, Item 1A of the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2020.

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

(a)  None.

(b)  None.

(c) On February 9, 2021, the Corporation announced that its board of directors approved a share repurchase program pursuant to which the Corporation is authorized to repurchase up to $75.0 million of its outstanding shares of common stock, or approximately 3.2% of its outstanding shares, through December 31, 2021. Under the repurchase program, repurchased shares are added to treasury stock, at cost. As permitted by securities laws and other legal requirements, and subject to market conditions and other factors, purchases may be made from time to time in open market or privately negotiated transactions, including, without limitation, through accelerated share repurchase transactions. The repurchase program may be discontinued at any time. No repurchases of common stock were made under this program during the three months ended March 31, 2021.

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Item 6. Exhibits

3.1	Articles of Incorporation, as amended and restated, of Fulton Financial Corporation– Incorporated by reference to Exhibit 3.1 of the Fulton Financial Corporation Current Report on Form 8-K filed on June 24, 2011. (File No. 0-10587)
3.2	Statement with Respect to Shares of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A of Fulton Financial Corporation, dated October 23, 2020, filed with the Pennsylvania Department of State - Incorporated by reference to Exhibit 3.1 of the Fulton Financial Corporation Current Report on Form 8-K filed on October 29, 2020.
3.3	Bylaws of Fulton Financial Corporation as amended – Incorporated by reference to Exhibit 3.1 of the Fulton Financial Corporation Current Report on a Form 8-K filed on May 21, 2020.
4.1	Statement with Respect to Shares of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A of Fulton Financial Corporation, dated October 23, 2020, filed with the Pennsylvania Department of State - Incorporated by reference to Exhibit 3.1 of the Fulton Financial Corporation Current Report on Form 8-K filed on October 29, 2020.
4.2	Deposit Agreement, dated October 29, 2020, among Fulton Financial Corporation, Equiniti Trust Company, as depositary, and the holders from time to time of the depositary receipts described therein - Incorporated by reference to Exhibit 4.1 of the Fulton Financial Corporation Current Report on Form 8-K filed on October 29, 2020.
4.3	Form of depositary receipt representing the Depositary Shares (included as Exhibit A to Exhibit 4.2 of this report).
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	Interactive data files pursuant to Rule 405 of Regulation S-T: (i) Unaudited Consolidated Balance Sheets, (ii) Unaudited Consolidated Statements of Income, (iii) Unaudited Consolidated Statements of Comprehensive Income, (iv) Unaudited Consolidated Statements of Shareholders' Equity, (v) Consolidated Statements of Cash Flows, and (vi) Notes to Consolidated Financial Statements.
104	Cover page interactive data file (formatted as inline XBRL and contained in Exhibit 101)

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FULTON FINANCIAL CORPORATION AND SUBSIDIARIES

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.

FULTON FINANCIAL CORPORATION
Date:	May 7, 2021	/s/ E. Philip Wenger
		E. Philip Wenger
		Chairman and Chief Executive Officer
Date:	May 7, 2021	/s/ Mark R. McCollom
		Mark R. McCollom
		Senior Executive Vice President and Chief Financial Officer

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EX-31.1

Exhibit 31.1 – Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, E. Philip Wenger, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Fulton Financial Corporation;

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 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 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.

Date:	May 7, 2021
	/s/ E. Philip Wenger
	E. Philip Wenger
	Chairman and Chief Executive Officer

EX-31.2

Exhibit 31.2 – Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Mark R. McCollom, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Fulton Financial Corporation;

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 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 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.

Date:	May 7, 2021
	/s/ Mark R. McCollom
	Mark R. McCollom
	Senior Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1 - Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, E. Philip Wenger, Chief Executive Officer of Fulton Financial Corporation, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, certify that:

The Form 10-Q of Fulton Financial Corporation, containing the consolidated financial statements for the quarter ended March 31, 2021, fully complies with the requirements of Sections 13(a) or 15(d) of the Securities Exchange Act of 1934. The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Fulton Financial Corporation.

Date:	May 7, 2021
	/s/ E. Philip Wenger
	E. Philip Wenger
	Chairman and Chief Executive Officer

EX-32.2

Exhibit 32.2 - Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, Mark R. McCollom, Chief Financial Officer of Fulton Financial Corporation, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, certify that:

The Form 10-Q of Fulton Financial Corporation, containing the consolidated financial statements for the quarter ended March 31, 2021, fully complies with the requirements of Sections 13(a) or 15(d) of the Securities Exchange Act of 1934. The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Fulton Financial Corporation.

Date:	May 7, 2021
	/s/ Mark R. McCollom
	Mark R. McCollom
	Senior Executive Vice President and Chief Financial Officer

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2021	Apr. 30, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	0-10587
Entity Registrant Name	FULTON FINANCIAL CORP
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-2195389
Entity Address, Address Line One	One Penn Square
Entity Address, City or Town	Lancaster,
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	17602
City Area Code	717
Local Phone Number	291-2411
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		162,606,000
Entity Central Index Key	0000700564
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Stock, par value $2.50
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $2.50
Trading Symbol	FULT
Security Exchange Name	NASDAQ
Depositary Shares, Each Representing 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol	FULTP
Security Exchange Name	NASDAQ

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 102,570	$ 120,462
Interest-bearing deposits with other banks	1,559,306	1,727,370
Cash and cash equivalents	1,661,876	1,847,832
FRB and FHLB stock	66,209	92,129
Loans held for sale	34,092	83,886
AFS, at estimated fair value	2,758,597	3,062,143
HTM, at amortized cost	853,413	278,281
Net Loans	18,990,986	18,900,820
Less: ACL - loans	(265,986)	(277,567)
Loans, net	18,725,000	18,623,253
Net premises and equipment	229,035	231,480
Accrued interest receivable	65,649	72,942
Goodwill and intangible assets	536,544	536,659
Other assets	962,575	1,078,128
Total Assets	25,892,990	25,906,733
LIABILITIES
Noninterest-bearing	7,046,116	6,531,002
Interest-bearing	14,587,722	14,308,205
Total Deposits	21,633,838	20,839,207
Short-term borrowings	520,989	630,066
Accrued interest payable	5,618	10,365
Other liabilities	476,483	514,004
Federal Home Loan Bank advances and long-term debt	626,407	1,296,263
Total Liabilities	23,263,335	23,289,905
SHAREHOLDERS’ EQUITY
Preferred stock, no par value, 10,000,000 shares authorized; Series A, 200,000 shares authorized and issued in 2020, liquidation preference of $1,000 per share	192,878	192,878
Common stock, $2.50 par value, 600.0 million shares authorized, 223.2 million shares issued in 2021 and in 2020	558,116	557,917
Additional paid-in capital	1,511,101	1,508,117
Retained earnings	1,168,491	1,120,781
Accumulated other comprehensive gain	25,838	65,091
Treasury stock, at cost, 60.7 million shares in 2021 and 60.8 million shares in 2020	(826,769)	(827,956)
Total Shareholders’ Equity	2,629,655	2,616,828
Total Liabilities and Shareholders’ Equity	$ 25,892,990	$ 25,906,733

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Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	200,000	200,000
Liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50
Common stock, shares authorized (in shares)	600,000,000	600,000,000
Common stock, shares issued (in shares)	223,200,000	223,200,000
Treasury stock, shares (in shares)	60,700,000	60,800,000

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Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
INTEREST INCOME
Loans, including fees	$ 163,985	$ 175,523
Investment securities:
Taxable	13,691	16,294
Tax-exempt	5,653	4,709
Loans held for sale	471	320
Other interest income	1,136	2,532
Total Interest Income	184,936	199,378
Interest Expense
Deposits	9,602	26,440
Short-term borrowings	188	4,073
Long-term borrowings	10,698	8,119
Total Interest Expense	20,488	38,632
Net Interest Income	164,448	160,746
Provision for credit losses	(5,500)	44,030
Net Interest Income After Provision for Credit Losses	169,948	116,716
Non-Interest Income
Non-interest income before investment securities gains	61,922	54,598
Investment securities gains, net	33,475	46
Total Non-Interest Income	95,397	54,644
NON-INTEREST EXPENSE
Salaries and employee benefits	82,586	80,228
Net occupancy	13,982	13,486
Data processing and software	13,561	11,645
Other outside services	8,490	7,881
State taxes	4,505	2,804
Equipment	3,428	3,418
Professional fees	2,779	4,202
FDIC insurance	2,624	2,808
Amortization of TCI	1,531	1,450
Marketing	1,002	1,579
Intangible amortization	115	132
Debt extinguishment	32,163	0
Other	11,618	12,919
Total Non-Interest Expense	178,384	142,552
Income Before Income Taxes	86,961	28,808
Income taxes	13,898	2,761
Net Income	73,063	26,047
Preferred stock dividends	(2,591)	0
Net Income Available to Common Shareholders	$ 70,472	$ 26,047
PER SHARE:
Net Income (Basic) (in dollars per share)	$ 0.43	$ 0.16
Net Income (Diluted) (in dollars per share)	0.43	0.16
Cash Dividends (in dollars per share)	$ 0.14	$ 0.13
Investment management and trust services
Non-Interest Income
Non-interest income before investment securities gains	$ 17,347	$ 15,055
Other service charges and fees
Non-Interest Income
Non-interest income before investment securities gains	16,342	18,419
Service charges on deposit accounts
Non-Interest Income
Non-interest income before investment securities gains	10,754	11,239
Mortgage banking income
Non-Interest Income
Non-interest income before investment securities gains	13,960	6,234
Other
Non-Interest Income
Non-interest income before investment securities gains	$ 3,519	$ 3,651

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 73,063	$ 26,047
Other Comprehensive (Loss) Income, net of tax:
Unrealized (loss) gain on securities	(39,999)	17,431
Reclassification adjustment for securities gains included in net income	377	(36)
Amortization of net unrealized losses on AFS securities transferred to HTM	1,787	795
Net unrealized loss on interest rate swaps used in cash flow hedges	(1,707)	0
Amortization of net unrecognized pension and postretirement income	289	255
Other Comprehensive (Loss) Income	(39,253)	18,445
Total Comprehensive Income	$ 33,810	$ 44,492

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Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	[1]	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	[1]	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance at Dec. 31, 2019	$ 2,342,176	$ (43,807)		$ 0	$ 556,110	$ 1,499,681	$ 1,079,391	$ (43,807)		$ (137)	$ (792,869)
Beginning Balance (in shares) at Dec. 31, 2019				0	164,218
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	26,047						26,047
Other comprehensive income	18,445									18,445
Stock issued (in shares)					125
Common stock issued	2,001				$ 133	889					979
Stock-based compensation awards	1,619					1,619
Acquisition of treasury stock (in shares)					(2,908)
Acquisition of treasury stock (in shares)	(39,748)										(39,748)
Common stock cash dividends	(20,985)						(20,985)
Ending Balance at Mar. 31, 2020	2,285,748			$ 0	$ 556,243	1,502,189	1,040,646			18,308	(831,638)
Ending Balance (in shares) at Mar. 31, 2020				0	161,435
Beginning Balance at Dec. 31, 2020	2,616,828			$ 192,878	$ 557,917	1,508,117	1,120,781			65,091	(827,956)
Beginning Balance (in shares) at Dec. 31, 2020				200	162,350
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	73,063						73,063
Other comprehensive income	(39,253)									(39,253)
Stock issued (in shares)					167
Common stock issued	2,468				$ 199	1,082					1,187
Stock-based compensation awards	1,902					1,902
Preferred stock dividend	(2,591)						(2,591)
Common stock cash dividends	(22,762)						(22,762)
Ending Balance at Mar. 31, 2021	$ 2,629,655			$ 192,878	$ 558,116	$ 1,511,101	$ 1,168,491			$ 25,838	$ (826,769)
Ending Balance (in shares) at Mar. 31, 2021				200	162,517

[1] The Corporation adopted ASU 2016-13 "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses of Financial Instruments on January 1, 2020. See Note 1, "Basis of Presentation" to the Consolidated Financial Statements for further details.

XML

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Cash dividends per share	$ 0.14	$ 0.13

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 73,063	$ 26,047
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	(5,500)	44,030
Depreciation and amortization of premises and equipment	6,870	7,161
Amortization of TCI	6,935	7,619
Net amortization of investment securities premiums	3,716	2,707
Investment securities gains, net	(33,475)	(46)
Gain on sales of mortgage loans held for sale	(8,656)	(6,181)
Proceeds from sales of mortgage loans held for sale	294,478	195,649
Originations of mortgage loans held for sale	(236,028)	(192,285)
Amortization of intangible assets	115	132
Amortization of issuance costs and discounts on long-term borrowings	1,146	250
Debt extinguishment costs	32,163	0
Stock-based compensation	1,902	1,619
Other changes, net	66,683	(133,579)
Total adjustments	130,349	(72,924)
Net cash provided by (used in) operating activities	203,412	(46,877)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of AFS securities	59,342	59,894
Proceeds from principal repayments and maturities of AFS securities	134,684	61,408
Proceeds from principal repayments and maturities of HTM securities	29,066	19,758
Purchase of AFS securities	(304,493)	(390,936)
Purchase of HTM securities	(227,687)	0
Sale of Visa Shares	33,962	0
Sale (purchase) of FRB and FHLB stock	25,920	(21,567)
Net increase in loans	(96,347)	(250,993)
Net change in tax credit investments	(4,425)	(4,023)
Net change in tax credit investments	(977)	(128)
Net cash used in investing activities	(350,955)	(526,587)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand and savings deposits	971,180	(34,866)
Net (decrease) increase in time deposits	(176,549)	5,979
Net (decrease) increase in short-term borrowings	(109,077)	503,567
Proceeds from long-term borrowings	0	496,461
Repayments of long-term borrowings	(703,165)	(13)
Net proceeds from issuance of common stock	2,468	2,001
Dividends paid	(23,270)	(21,348)
Acquisition of treasury stock	0	(39,748)
Net cash (used in) provided by financing activities	(38,413)	912,033
Net (Decrease) Increase in Cash and Cash Equivalents	(185,956)	338,569
Cash and Cash Equivalents at Beginning of Period	1,847,832	517,791
Cash and Cash Equivalents at End of Period	1,661,876	856,360
Cash paid during the period for:
Interest	25,235	36,576
Income taxes	477	1,072
Supplemental schedule of certain noncash activities:
Transfer of AFS securities to HTM securities	$ 376,165	$ 0

XML

Basis of Presentation

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited Consolidated Financial Statements of the Corporation have been prepared in conformity with GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities as of the date of the financial statements as well as revenues and expenses during the period. Actual results could differ from those estimates. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. These Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2020. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. The Corporation evaluates subsequent events through the date of filing of this Form 10-Q with the SEC.

CECL Adoption

On January 1, 2020, the Corporation adopted ASU 2016-13, Financial Instruments - Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial Instruments. The Corporation adopted CECL using the modified retrospective method for all financial assets measured at amortized cost, net of investments in leases and OBS credit exposures. The Corporation recorded an increase of $58.3 million to the ACL on January 1, 2020 as a result of the adoption of CECL. Retained earnings decreased $43.8 million and deferred tax assets increased by $12.4 million. Included in the $58.3 million increase to the ACL was $2.1 million for certain OBS credit exposures that was previously recognized in other liabilities before the adoption of CECL.

CARES Act and Consolidated Appropriations Act - 2021

On March 27, 2020 the CARES Act was signed into law. The CARES Act includes an option for financial institutions to suspend the requirements of GAAP for certain loan modifications that would otherwise be categorized as a TDR. Certain conditions must be met with respect to the loan modification including that the modification is related to COVID-19 and the modified loan was not more than 30 days past due on December 31, 2019. On December 27, 2020, the 2021 Consolidated Appropriations Act was signed into law and this Act extended the relief for TDR treatment that was set to expire on December 31, 2020 to the earlier of 60 days after the national emergency termination date or January 1, 2022. The Corporation is applying the option under the CARES act for all loan modifications that qualify.

Recently Adopted Accounting Standards

On January 1, 2021, the Corporation adopted ASC Update 2019-12 Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The Corporation adopted this standards update effective with its March 31, 2021 quarterly report on Form 10-Q and it did not have a material impact on the consolidated financial statements.

On January 1, 2021, the Corporation adopted ASC Update 2021-01 Reference Rate Reform (Topic 848). This update permits entities to apply optional expedients in Topic 848 to derivative instruments modified because of LIBOR transition affected by changes to the interest rates used for discounting, margining or contract price alignment due to reference rate reform. This update was effective upon issuance and entities may elect to apply the guidance to modifications either retrospectively, as of any date from the beginning of any interim period that includes or is subsequent to March 12, 2020, or prospectively to new modifications from any date in an interim period that includes or is subsequent to January 7, 2021. The Corporation adopted this standards update retrospectively effective with its March 31, 2021 quarterly report on Form 10-Q and it did not have a material impact on the consolidated financial statements.

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Restrictions on Cash and Cash Equivalents	3 Months Ended
	Mar. 31, 2021
Cash and Cash Equivalents [Abstract]
Restrictions on Cash and Cash Equivalents	Restrictions on Cash and Cash EquivalentsThe Bank is required to maintain reserves against its deposit liabilities. Prior to March 2020, reserves were in the form of cash and balances with the FRB. The FRB suspended cash reserve requirements effective March 26, 2020. In addition, cash collateral is posted by the Corporation with counterparties to secure derivative and other contracts. The amounts of such cash collateral as of March 31, 2021 and December 31, 2020 were $243.6 million and $408.1 million, respectively.

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Investment Securities

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities

The following table presents the amortized cost and estimated fair values of investment securities for the periods presented:

	March 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for Sale	(in thousands)
State and municipal securities	$	953,601	$	42,412	$	(1,253)	$	994,760
Corporate debt securities	348,162		11,970		(761)		359,371
Collateralized mortgage obligations	390,253		10,633		(1,005)		399,881
Residential mortgage-backed securities	257,409		1,941		(3,986)		255,364
Commercial mortgage-backed securities	668,144		12,455		(7,582)		673,017
Auction rate securities	76,350		—		(146)		76,204
Total	$	2,693,919	$	79,411	$	(14,733)	$	2,758,597
Held to Maturity
Residential mortgage-backed securities	$	467,461	$	16,303	$	(8,025)	$	475,739
Commercial mortgage-backed securities	385,952		—		(17,948)		368,004
Total	$	853,413	$	16,303	$	(25,973)	$	843,743

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for Sale	(in thousands)
State and municipal securities	$	891,327	$	61,286	$	—	$	952,613
Corporate debt securities	348,391		19,445		(691)		367,145
Collateralized mortgage obligations	491,321		12,560		(115)		503,766
Residential mortgage-backed securities	373,779		4,246		(27)		377,998
Commercial mortgage-backed securities	741,172		22,384		(1,141)		762,415
Auction rate securities	101,510		—		(3,304)		98,206
Total	$	2,947,500	$	119,921	$	(5,278)	$	3,062,143
Held to Maturity
Residential mortgage-backed securities	$	278,281	$	18,576	$	—	$	296,857

During the first quarter of 2021, the Corporation transferred residential and commercial mortgage backed securities from the AFS classification to the HTM classification. The amortized cost and estimated fair value of the securities transferred were both $376.2 million.

Securities carried at $1.1 billion at March 31, 2021 and $520.5 million at December 31, 2020 were pledged as collateral to secure public and trust deposits and customer repurchase agreements.

The amortized cost and estimated fair values of debt securities as of March 31, 2021, by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities as certain investment securities are subject to call or prepayment with or without call or prepayment penalties.

		March 31, 2021
		Available for Sale				Held to Maturity
		Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(in thousands)
Due in one year or less		$	13,107	$	13,171	$	—	$	—
Due from one year to five years		37,176		38,417		—		—
Due from five years to ten years		343,642		355,683		—		—
Due after ten years		984,188		1,023,064		—		—
		1,378,113		1,430,335		—		—
Residential mortgage-backed securities(1)		257,409		255,364		467,461		475,739
Commercial mortgage-backed securities(1)		668,144		673,017		385,952		368,004
Collateralized mortgage obligations(1)		390,253		399,881		—		—
Total		$	2,693,919	$	2,758,597	$	853,413	$	843,743
(1) Mortgage-backed securities and collateralized mortgage obligations do not have stated maturities and are dependent upon the interest rate environment and prepayments on the underlying loans.

The following table presents information related to the gross realized gains and losses on the sales of investment securities for the periods presented:

	Gross Realized Gains		Gross Realized Losses		Net Gains
Three months ended	(in thousands)
March 31, 2021	$	34,016	$	(541)	$	33,475
March 31, 2020	117		(71)		46

During the first quarter of 2021, the Corporation completed a balance sheet restructuring that included a $34.0 million gain on the sale of Visa Shares, offset by net losses on other securities of $400,000, primarily in connection with the sale of $24.6 million of ARCs. In addition, debt extinguishment costs of $32.2 million included in non-interest expense and a write-off of $841,000 in unamortized discounts was recognized in net interest income in connection with the cash tender offer for certain of its outstanding senior and subordinated notes and the prepayment of certain term FHLB advances. See Note 14, "Long-Term Debt" for further details.

The following tables present the gross unrealized losses and estimated fair values of investment securities, aggregated by category and length of time that individual securities have been in a continuous unrealized loss position for the periods presented:

	March 31, 2021
	Less than 12 months					12 months or longer					Total
	Number of Securities	Estimated Fair Value		Unrealized Losses		Number of Securities	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Available for Sale		(in thousands)
State and municipal securities	21	$	88,141	$	(1,253)	—	$	—	$	—	$	88,141	$	(1,253)
Corporate debt securities	7	41,956		(582)		2	15,328		(179)		57,284		(761)
Collateralized mortgage obligations	2	55,305		(1,005)		—	—		—		55,305		(1,005)
Residential mortgage-backed securities	8	173,908		(3,986)		—	—		—		173,908		(3,986)
Commercial mortgage-backed securities	10	183,175		(7,582)		—	—		—		183,175		(7,582)
Auction rate securities	—	—		—		118	76,204		(146)		76,204		(146)
Total available for sale	48	$	542,485	$	(14,408)	120	$	91,532	$	(325)	$	634,017	$	(14,733)
Held to Maturity
Residential mortgage-backed securities	12	$	205,072	$	(8,025)	—	$	—	$	—	$	205,072	$	(8,025)
Commercial mortgage-backed securities	21	368,004		(17,948)		—	—		—		368,004		(17,948)
Total	33	$	573,076	$	(25,973)	—	$	—	$	—	$	573,076	$	(25,973)

	December 31, 2020
	Less than 12 months					12 months or longer					Total
	Number of Securities	Estimated Fair Value		Unrealized Losses		Number of Securities	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Available for Sale	(in thousands)
Corporate debt securities	9	$	44,528	$	(377)	1	$	6,871	$	(314)	$	51,399	$	(691)
Collateralized mortgage obligations	3	57,601		(115)		—	—		—		57,601		(115)
Residential mortgage-backed securities	1	20,124		(27)		—	—		—		20,124		(27)
Commercial mortgage-backed securities	9	144,383		(1,141)		—	—		—		144,383		(1,141)
Auction rate securities	—	—		—		162	98,206		(3,304)		98,206		(3,304)
Total available for sale(1)	22	$	266,636	$	(1,660)	163	$	105,077	$	(3,618)	$	371,713	$	(5,278)

(1) No HTM securities were in an unrealized loss position as of December 31, 2020.

The Corporation’s collateralized mortgage obligations and mortgage-backed securities have contractual terms that generally do not permit the issuer to settle the securities at a price less than the amortized cost of the investment. The change in fair value of these securities is attributable to changes in interest rates and not credit quality. The Corporation does not have the intent to sell and does not believe it will more likely than not be required to sell any of these securities prior to a recovery of their fair value to amortized cost. Therefore, the Corporation does not have an ACL for these investments as of March 31, 2021.

Based on management’s evaluations, no ACL was required for municipal securities, corporate debt securities or ARCs as of March 31, 2021. The Corporation does not have the intent to sell and does not believe it will more likely than not be required to sell any of these securities prior to a recovery of their fair value to amortized cost, which may be at maturity.

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Loans and Allowance for Credit Losses

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Loans and Allowance for Credit Losses

Loans and Allowance for Credit Losses

Net Loans are summarized as follows:

	March 31, 2021		December 31, 2020
	(in thousands)
Real estate - commercial mortgage	$	7,142,137	$	7,105,092
Commercial and industrial (1)	5,675,714		5,670,828
Real-estate - residential mortgage	3,254,058		3,141,915
Real-estate - home equity	1,149,958		1,202,913
Real-estate - construction	1,083,494		1,047,218
Consumer	451,857		466,772
Equipment lease financing and other	252,930		284,377
Overdrafts	1,373		4,806
Gross loans	19,011,521		18,923,921
Unearned income	(20,535)		(23,101)
Net Loans	$	18,990,986	$	18,900,820

(1) Includes PPP loans totaling $1.7 billion and $1.6 billion as of March 31, 2021 and December 31, 2020, respectively.

The Corporation segments its loan portfolio by "portfolio segments," as presented in the table above. Certain portfolio segments are further disaggregated by "class segment" for the purpose of estimating credit losses.

Allowance for Credit Losses

The Corporation has elected to exclude accrued interest receivable from the measurement of its ACL. When a loan is placed on non-accrual status, any outstanding accrued interest is reversed against interest income.

Loans: The ACL for loans is an estimate of the expected losses to be realized over the life of the loans in the portfolio. The ACL is determined for two distinct categories of loans: 1) loans evaluated collectively for expected credit losses and 2) loans evaluated individually for expected credit losses.

Loans Evaluated Collectively: Loans evaluated collectively for expected credit losses include loans on accrual status, excluding accruing TDRs, and loans initially evaluated individually, but determined not to have enhanced credit risk characteristics. This category includes loans on non-accrual status and TDRs where the total commitment amount is less than $1 million. The ACL is estimated by applying a PD and LGD to the EAD at the loan level. In order to determine the PD, LGD, and EAD calculation inputs:

•Loans are aggregated into pools based on similar risk characteristics.

•The PD and LGD rates are determined by historical credit loss experience for each pool of loans.

•The loan segment PD rates are estimated using six econometric regression models that use the Corporation’s historical credit loss experience and incorporate reasonable and supportable economic forecasts for various macroeconomic variables that are statistically correlated with expected loss behavior in the loan segment.

•The reasonable and supportable forecast for each macroeconomic variable is sourced from an external third party and is applied over the contractual term of the Corporation’s loan portfolio. The Corporation’s economic forecast considers the general health of the economy, the interest rate environment, real estate pricing and market risk.

•A single baseline forecast scenario is used for each macroeconomic variable.

•The loan segment lifetime LGD rates are estimated using a loss rate approach based on the Corporation’s historical charge-off experience and the balance at the time of loan default.

•The LGD rates are adjusted for the Corporation’s recovery experience.

•To calculate the EAD, the corporation estimates contractual cash flows over the remaining life of each loan. Certain cash flow assumptions are established for each loan using maturity date, amortization schedule and interest rate. In addition, a prepayment rate is used in determining the EAD estimate.

Loans Evaluated Individually: Loans evaluated individually for expected credit losses include loans on non-accrual status and TDRs where the commitment amount equals or exceeds $1.0 million. The required ACL for such loans is determined using either the present value of expected future cash flows, observable market price or the fair value of collateral.

Loans evaluated individually may have specific allocations of the ACL assigned if the measured value of the loan using one of the noted techniques is less than its current carrying value. For loans measured using the fair value of collateral, if the analysis determines that sufficient collateral value would be available for repayment of the debt, then no allocations would be assigned to those loans. Collateral could be in the form of real estate or business assets, such as accounts receivable or inventory, in the case of commercial and industrial loans. Commercial and industrial loans may also be secured by real estate.

For loans secured by real estate, estimated fair values are determined primarily through appraisals performed by third-party appraisers, discounted to arrive at expected net sale proceeds. For collateral dependent loans, estimated real estate fair values are also net of estimated selling costs. When a real estate secured loan is impaired, a decision is made regarding whether an updated appraisal of the real estate is necessary. This decision is based on various considerations, including: the age of the most recent appraisal; the loan-to-value ratio based on the original appraisal; the condition of the property; the Corporation’s experience and knowledge of the real estate market; the purpose of the loan; market factors; payment status; the strength of any guarantors; and the existence and age of other indications of value such as broker price opinions, among others. The Corporation generally obtains updated appraisals performed by third-party appraisers for impaired loans secured predominantly by real estate every 12 months.

When updated appraisals are not obtained for loans secured by real estate, fair values are estimated based on the original appraisal values, as long as the original appraisal indicated an acceptable loan-to-value position and there has not been a significant deterioration in the collateral value since the original appraisal was performed.

For loans with principal balances greater than or equal to $1.0 million secured by non-real estate collateral, such as accounts receivable or inventory, estimated fair values are determined based on borrower financial statements, inventory listings, accounts receivable agings or borrowing base certificates. Indications of value from these sources are generally discounted based on the age of the financial information or the quality of the assets. Liquidation or collection discounts are applied to these assets based upon existing loan evaluation policies.

Management regularly reviews loans in the portfolio to assess credit quality indicators and to determine appropriate loan classification. For commercial loans, commercial mortgages and construction loans to commercial borrowers, an internal risk rating process is used. The Corporation believes that internal risk ratings are the most relevant credit quality indicator for these types of loans. The migration of loans through the various internal risk rating categories is a significant component of the ACL methodology for these loans, which bases the PD on this migration. Assigning risk ratings involves judgment. Risk ratings may be changed based on ongoing monitoring procedures, or if specific loan review assessments identify a deterioration or an improvement in the loan.

The ACL is reviewed to evaluate its appropriateness in relation to the overall risk profile of the loan portfolio. The Corporation considers risk factors such as: local and national economic conditions; trends in delinquencies and non-accrual loans; the diversity of borrower industry types; and the composition of the portfolio by loan type.

Qualitative and Other Adjustments to ACL: In addition to the quantitative credit loss estimates for loans evaluated collectively, qualitative factors that may not be fully captured in the quantitative results are also evaluated. These qualitative factors include changes in lending policy, the nature and volume of the portfolio, overall business conditions in the economy, credit concentrations, specific industry risks, competition, model imprecision and legal and regulatory requirements. Qualitative adjustments are judgmental and are based on management’s knowledge of the portfolio and the markets in which the Corporation operates. Qualitative adjustments are evaluated and approved on a quarterly basis. Additionally, the ACL includes other allowance categories that are not directly incorporated in the quantitative results. These categories include but are not limited to loans-in-process, trade acceptances and overdrafts.

OBS Credit Exposures: The ACL for OBS credit exposures is recorded in other liabilities on the consolidated balance sheets. This portion of the ACL represents management’s estimate of expected losses in its unfunded loan commitments and other OBS credit exposures. The ACL specific to unfunded commitments is determined by estimating future draws and applying the expected loss rates on those draws. Future draws are based on historical averages of utilization rates (i.e., the likelihood of draws taken). The ACL for OBS credit exposures is increased or decreased by charges or reductions to expense, through the provision for credit losses.

The following table presents the components of the ACL:

	March 31, 2021		December 31, 2020
	(in thousands)
ACL - loans	$	265,986	$	277,567
ACL - OBS credit exposure	14,273		14,373
Total ACL	$	280,259	$	291,940

The following table presents the activity in the ACL:

	Three months ended March 31
	2021		2020
	(in thousands)
Balance at beginning of period	$	291,940	$	166,209
Impact of adopting CECL on January 1, 2020 (1)	—		58,349
Loans charged off	(8,202)		(14,003)
Recoveries of loans previously charged off	2,021		2,887
Net loans charged off	(6,181)		(11,116)
Provision for credit losses (2)	(5,500)		44,029
Balance at end of period	$	280,259	$	257,471

(1) Includes $12.6 million of reserves for OBS credit exposures as of January 1, 2020.

(2) Includes $(100,000) and $3.8 million related to OBS credit exposures for the three months ended March 31, 2021 and 2020, respectively.

The following table presents the activity in the ACL - loans by portfolio segment:

	Real Estate - Commercial Mortgage		Commercial and Industrial		Real Estate - Home Equity		Real Estate - Residential Mortgage		Real Estate  - Construction		Consumer		Equipment lease financing, other and overdrafts		Total
	(in thousands)
Three months ended March 31, 2021
Balance at December 31, 2020	$	103,425	$	74,771	$	14,232	$	51,995	$	15,608	$	10,905	$	6,633	$	277,567
Loans charged off	(1,837)		(4,319)		(212)		(192)		(39)		(635)		(968)		(8,202)
Recoveries of loans previously charged off	174		769		51		95		384		389		159		2,021
Net loans recovered (charged off)	(1,663)		(3,550)		(161)		(97)		345		(246)		(809)		(6,181)
Provision for loan losses (1)	(786)		(27)		(341)		(1,903)		(874)		(1,247)		(222)		(5,400)
Balance at March 31, 2021	$	100,976	$	71,194	$	13,730	$	49,995	$	15,079	$	9,412	$	5,602	$	265,986
Three months ended March 31, 2020
Balance at December 31, 2019	$	45,610	$	68,602	$	17,744	$	19,771	$	4,443	$	3,762	$	3,690	$	163,622
Impact of adopting CECL on January 1, 2020	29,361		(18,576)		(65)		21,235		4,015		5,969		3,784		45,723
Loans charged off	(855)		(10,899)		(316)		(187)		—		(1,213)		(533)		(14,003)
Recoveries of loans previously charged off	244		1,734		646		85		70		—		108		2,887
Net loans (charged off) recovered	(611)		(9,165)		330		(102)		70		(1,213)		(425)		(11,116)
Provision for loan losses (1)	15,959		22,745		(2,756)		1,523		(130)		1,347		1,591		40,279
Balance at March 31, 2020	$	90,319	$	63,606	$	15,253	$	42,427	$	8,398	$	9,865	$	8,640	$	238,508

(1) Provision included in the table only includes the portion related to Net Loans.

Several factors as of the end of the first quarter of 2021 in comparison to the end of the fourth quarter of 2020, including improved economic forecasts and a decrease in specific allocations within the ACL for loans evaluated individually, reduced the level of the ACL determined to be necessary as of March 31, 2021, resulting in the negative provision for credit losses for the three months ended March 31, 2021. The higher provision expense during the first three months of 2020 was largely driven by the overall downturn in economic forecasts due to COVID-19, resulting in higher expected future credit losses under CECL.

Qualitative adjustments during the first three months of 2020 increased compared to those at the time of the adoption of CECL on January 1, 2020 primarily as a result of uncertainties related to the economic impact of COVID-19, including consideration for the future performance of loans that received deferrals or forbearances as a result of COVID-19 and the impact COVID-19 had on certain industries where the quantitative models were not fully capturing the appropriate level of risk at that time. PPP loans issued are fully guaranteed by the SBA and, as such, no ACL was recorded against the PPP loan portfolio.

Non-accrual Loans

All loans individually evaluated for impairment are measured for losses on a quarterly basis. As of March 31, 2021 and December 31, 2020, substantially all of the Corporation’s individually evaluated loans with total commitments greater than or equal to $1.0 million were measured based on the estimated fair value of each loan’s collateral, if any. Collateral could be in the form of real estate, in the case of commercial mortgages and construction loans, or business assets, such as accounts receivable or inventory, in the case of commercial and industrial loans. Commercial and industrial loans may also be secured by real estate.

As of March 31, 2021 and December 31, 2020, approximately 97% and 83%, respectively, of loans evaluated individually for impairment with principal balances greater than or equal to $1.0 million, whose primary collateral consisted of real estate, were measured at estimated fair value using appraisals performed by state certified third-party appraisers that had been updated in the preceding 12 months.

The following table presents total non-accrual loans, by class segment:

	March 31, 2021						December 31, 2020
	With a Related Allowance		Without a Related Allowance		Total		With a Related Allowance		Without a Related Allowance		Total
	(in thousands)
Real estate - commercial mortgage	$	21,107	$	30,870	$	51,977	$	19,909	$	31,561	$	51,470
Commercial and industrial	13,012		18,640		31,652		13,937		18,056		31,993
Real estate - residential mortgage	31,203		2,198		33,401		24,590		1,517		26,107
Real estate - home equity	9,368		—		9,368		9,398		190		9,588
Real estate - construction	544		897		1,441		437		958		1,395
Consumer	301		—		301		332		—		332
Equipment lease financing and other	6,462		9,287		15,749		—		16,313		16,313
	$	81,997	$	61,892	$	143,889	$	68,603	$	68,595	$	137,198

As of March 31, 2021 and December 31, 2020, there were $61.9 million and $68.6 million, respectively, of non-accrual loans that did not have a related allowance for credit losses. The estimated fair values of the collateral securing these loans exceeded their carrying amount, or the loans were previously charged down to realizable collateral values. Accordingly, no specific valuation allowance was considered to be necessary.

Asset Quality

Maintaining an appropriate ACL is dependent on various factors, including the ability to identify potential problem loans in a timely manner. For commercial construction, residential construction, commercial and industrial, and commercial real estate, an internal risk rating process is used. The Corporation believes that internal risk ratings are the most relevant credit quality indicator for these types of loans. The migration of loans through the various internal risk rating categories is a significant component of the ACL methodology for these loans, which bases the probability of default on this migration. Assigning risk ratings involves judgment. The Corporation's loan review officers provide a separate assessment of risk rating accuracy. Risk ratings may be changed based on the ongoing monitoring procedures performed by loan officers or credit administration staff or if specific loan review assessments identify a deterioration or an improvement in the loans.

The following is a summary of the Corporation's internal risk rating categories:

•Pass: These loans do not currently pose undue credit risk and can range from the highest to average quality, depending     on the degree of potential risk.

•Special Mention: These loans have a heightened credit risk, but not to the point of justifying a classification of Substandard. Loans in this category are currently acceptable but, are nevertheless potentially weak.

•Substandard or Lower: These loans are inadequately protected by current sound worth and paying capacity of the borrower. There exists a well-defined weakness or weaknesses that jeopardize the normal repayment of the debt.

The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the current period:

		March 31, 2021
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2021		2020		2019		2018		2017		Prior		Cost Basis		Cost Basis		Total
Real estate - construction(1)
	Pass	$	14,615	$	233,770	$	201,440	$	218,467	$	80,686	$	142,339	$	36,046	$	—	$	927,363
	Special Mention	110		—		—		—		—		13,195		—		—		13,305
	Substandard or Lower	—		—		154		—		1,976		3,520		406		—		6,056
	Total real estate - construction	14,725		233,770		201,594		218,467		82,662		159,054		36,452		—		946,724
Real estate - construction(1)
	Current period gross charge-offs	—		—		(39)		—		—		—		—		—		(39)
	Current period recoveries	—		—		—		—		—		384		—		—		384
	Total net (charge-offs) recoveries	—		—		(39)		—		—		384		—		—		345
Commercial and industrial
	Pass	885,616		1,624,535		481,038		290,788		201,910		726,981		1,205,065		—		5,415,933
	Special Mention	143		9,136		20,949		16,337		10,413		30,861		48,939		—		136,778
	Substandard or Lower	—		2,847		7,167		13,503		10,638		34,805		54,043		—		123,003
	Total commercial and industrial	885,759		1,636,518		509,154		320,628		222,961		792,647		1,308,047		—		5,675,714
Commercial and industrial
	Current period gross charge-offs	—		—		(613)		(2,871)		(60)		(775)		—		—		(4,319)
	Current period recoveries	—		—		37		126		36		570		—		—		769
	Total net (charge-offs) recoveries	—		—		(576)		(2,745)		(24)		(205)		—		—		(3,550)
Real estate - commercial mortgage
	Pass	200,885		993,776		926,352		670,684		767,399		2,800,409		49,207		321		6,409,033
	Special Mention	—		23,282		30,629		92,800		75,417		248,403		2,406		—		472,937
	Substandard or Lower	—		1,028		24,008		10,673		46,460		174,421		3,577		—		260,167
	Total real estate - commercial mortgage	200,885		1,018,086		980,989		774,157		889,276		3,223,233		55,190		321		7,142,137
Real estate - commercial mortgage
	Current period gross charge-offs	—		—		—		—		(1,719)		(118)		—		—		(1,837)
	Current period recoveries	—		—		—		—		—		174		—		—		174
	Total net (charge-offs) recoveries	—		—		—		—		(1,719)		56		—		—		(1,663)
Total
	Pass	$	1,101,116	$	2,852,081	$	1,608,830	$	1,179,939	$	1,049,995	$	3,669,729	$	1,290,318	$	321	$	12,752,329
	Special Mention	253		32,418		51,578		109,137		85,830		292,459		51,345		—		623,020
	Substandard or Lower	—		3,875		31,329		24,176		59,074		212,746		58,026		—		389,226
	Total	$	1,101,369	$	2,888,374	$	1,691,737	$	1,313,252	$	1,194,899	$	4,174,934	$	1,399,689	$	321	$	13,764,575

(1) Excludes real estate - construction - other.

The Corporation does not assign internal risk ratings to smaller balance, homogeneous loans, such as home equity, residential mortgage, construction loans to individuals secured by residential real estate, consumer and equipment lease financing. For these loans, the most relevant credit quality indicator is delinquency status. The migration of loans through the various delinquency status categories is a significant component of the ACL methodology for those loans, which bases the PD on this migration.

The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the prior period:

		December 31, 2020
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2020		2019		2018		2017		2016		Prior		Cost Basis		Cost Basis		Total
Real estate - construction(1)
	Pass	$	185,883	$	229,097	$	217,604	$	81,086	$	37,976	$	110,470	$	38,026	$	—	$	900,142
	Special Mention	—		—		—		—		7,047		6,212		—		—		13,259
	Substandard or Lower	—		447		—		2,000		753		1,637		632		—		5,469
	Total real estate - construction	185,883		229,544		217,604		83,086		45,776		118,319		38,658		—		918,870
Real estate - construction(1)
	Current period gross charge-offs	—		—		—		—		—		(17)		—		—		(17)
	Current period recoveries	—		—		—		—		68		5,054		—		—		5,122
	Total net (charge-offs) recoveries	—		—		—		—		68		5,037		—		—		5,105
Commercial and industrial
	Pass	2,283,533		508,541		298,567		214,089		208,549		596,646		1,278,689		—		5,388,614
	Special Mention	6,633		23,834		29,167		10,945		11,506		25,960		45,994		—		154,039
	Substandard or Lower	3,221		5,947		8,434		11,251		11,192		23,852		64,278		—		128,175
	Total commercial and industrial	2,293,387		538,322		336,168		236,285		231,247		646,458		1,388,961		—		5,670,828
Commercial and industrial
	Current period gross charge-offs	—		(114)		(30)		(488)		(393)		(520)		(17,370)		—		(18,915)
	Current period recoveries	—		43		486		216		162		4,531		5,958		—		11,396
	Total net (charge-offs) recoveries	—		(71)		456		(272)		(231)		4,011		(11,412)		—		(7,519)
Real estate - commercial mortgage
	Pass	973,664		917,510		708,946		794,955		783,094		2,213,343		53,041		404		6,444,957
	Special Mention	13,639		40,874		84,047		80,705		89,112		167,424		2,364		—		478,165
	Substandard or Lower	1,238		6,681		6,247		39,027		22,605		103,007		2,225		940		181,970
	Total real estate - commercial mortgage	988,541		965,065		799,240		914,687		894,811		2,483,774		57,630		1,344		7,105,092
Real estate - commercial mortgage
	Current period gross charge-offs	(60)		(21)		(36)		(2,515)		(29)		(1,547)		(17)		—		(4,225)
	Current period recoveries	—		6		—		—		1		1,020		—		—		1,027
	Total net (charge-offs) recoveries	(60)		(15)		(36)		(2,515)		(28)		(527)		(17)		—		(3,198)
Total
	Pass	$	3,443,080	$	1,655,148	$	1,225,117	$	1,090,130	$	1,029,619	$	2,920,459	$	1,369,756	$	404	$	12,733,713
	Special Mention	20,272		64,708		113,214		91,650		107,665		199,596		48,358		—		645,463
	Substandard or Lower	4,459		13,075		14,681		52,278		34,550		128,496		67,135		940		315,614
	Total	$	3,467,811	$	1,732,931	$	1,353,012	$	1,234,058	$	1,171,834	$	3,248,551	$	1,485,249	$	1,344	$	13,694,790

(1) Excludes real estate - construction - other.

The Corporation considers the performance of the loan portfolio and its impact on the ACL. For certain loan classes, the Corporation evaluates credit quality based on the aging status of the loan. The following tables present the amortized cost of these loans based on payment activity, by origination year, for the periods shown:

		March 31, 2021
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2021		2020		2019		2018		2017		Prior		Cost Basis		Cost Basis		Total
Real estate - home equity
	Performing	$	4,491	$	29,767	$	8,140	$	12,312	$	9,997	$	119,037	$	948,645	$	4,845	$	1,137,234
	Nonperforming	—		—		88		23		264		2,597		9,545		207		12,724
	Total real estate - home equity	4,491		29,767		8,228		12,335		10,261		121,634		958,190		5,052		1,149,958
Real estate - home equity
	Current period gross charge-offs	—		—		—		—		—		—		(212)		—		(212)
	Current period recoveries	—		—		—		—		—		—		51		—		51
	Total net (charge-offs) recoveries	—		—		—		—		—		—		(161)		—		(161)
Real estate - residential mortgage
	Performing	358,906		1,240,446		513,892		181,509		292,014		630,996		—		—		3,217,763
	Nonperforming	—		3,927		1,654		3,450		2,945		24,319		—		—		36,295
	Total real estate - residential mortgage	358,906		1,244,373		515,546		184,959		294,959		655,315		—		—		3,254,058
Real estate - residential mortgage
	Current period gross charge-offs	—		—		(40)		(47)		—		(105)		—		—		(192)
	Current period recoveries	—		—		—		3		1		—		92		—		96
	Total net (charge-offs) recoveries	—		—		(40)		(44)		1		(105)		92		—		(96)
Consumer
	Performing	27,910		103,924		90,185		85,837		38,190		56,885		48,371		—		451,302
	Nonperforming	—		127		37		63		35		243		50		—		555
	Total consumer	27,910		104,051		90,222		85,900		38,225		57,128		48,421		—		451,857
Consumer
	Current period gross charge-offs	—		(95)		(94)		(111)		(79)		(229)		(27)		—		(635)
	Current period recoveries	—		33		5		11		19		321		—		—		389
	Total net (charge-offs) recoveries	—		(62)		(89)		(100)		(60)		92		(27)		—		(246)
Equipment lease financing and other
	Performing	25,663		68,641		51,804		36,350		22,506		13,054		—		—		218,018
	Nonperforming	—		—		—		—		15,724		26		—		—		15,750
	Total leasing and other	25,663		68,641		51,804		36,350		38,230		13,080		—		—		233,768
Equipment lease financing and other
	Current period gross charge-offs	—		(968)		—		—		—		—		—		—		(968)
	Current period recoveries	—		120		39		—		—		—		—		—		159
	Total net (charge-offs) recoveries	—		(848)		39		—		—		—		—		—		(809)
Construction - other
	Performing	17,458		97,829		16,172		4,755		—		16		—		—		136,230
	Nonperforming	—		—		364		—		176		—		—		—		540
	Total construction - other	17,458		97,829		16,536		4,755		176		16		—		—		136,770
Construction - other
	Current period gross charge-offs	—		—		—		—		—		—		—		—		—
	Current period recoveries	—		—		—		—		—		—		—		—		—
	Total net (charge-offs) recoveries	—		—		—		—		—		—		—		—		—
Total
	Performing	$	434,428	$	1,540,607	$	680,193	$	320,763	$	362,707	$	819,988	$	997,016	$	4,845	$	5,160,547
	Nonperforming	—		4,054		2,143		3,536		19,144		27,185		9,595		207		65,864
	Total	$	434,428	$	1,544,661	$	682,336	$	324,299	$	381,851	$	847,173	$	1,006,611	$	5,052	$	5,226,411

		December 31, 2020
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2020		2019		2018		2017		2016		Prior		Cost Basis		Cost Basis		Total
Real estate - home equity
	Performing	$	31,445	$	8,176	$	13,906	$	11,024	$	11,667	$	126,749	$	982,285	$	5,321	$	1,190,573
	Nonperforming	—		88		23		233		221		2,290		9,485		—		12,340
	Total real estate - home equity	31,445		8,264		13,929		11,257		11,888		129,039		991,770		5,321		1,202,913
Real estate - home equity
	Current period gross charge-offs	—		—		—		—		—		(34)		(1,159)		—		(1,193)
	Current period recoveries	—		—		—		—		—		138		366		—		504
	Total net (charge-offs) recoveries	—		—		—		—		—		104		(793)		—		(689)
Real estate - residential mortgage
	Performing	1,255,532		585,878		228,398		341,563		264,990		434,889		—		—		3,111,250
	Nonperforming	217		2,483		3,177		2,483		722		21,583		—		—		30,665
	Total real estate - residential mortgage	1,255,749		588,361		231,575		344,046		265,712		456,472		—		—		3,141,915
Real estate - residential mortgage
	Current period gross charge-offs	—		(68)		(101)		(190)		(7)		(254)		—		—		(620)
	Current period recoveries	—		68		16		1		1		405		—		—		491
	Total net (charge-offs) recoveries	—		—		(85)		(189)		(6)		151		—		—		(129)
Consumer
	Performing	114,399		98,587		95,072		43,334		25,804		36,086		52,698		42		466,022
	Nonperforming	168		19		124		141		114		150		34		—		750
	Total consumer	114,567		98,606		95,196		43,475		25,918		36,236		52,732		42		466,772
Consumer
	Current period gross charge-offs	(134)		(542)		(524)		(444)		(489)		(769)		(498)		—		(3,400)
	Current period recoveries	—		64		165		159		94		101		1,292		—		1,875
	Total net (charge-offs) recoveries	(134)		(478)		(359)		(285)		(395)		(668)		794		—		(1,525)
Equipment lease financing and other
	Performing	102,324		65,303		49,453		34,995		15,631		5,040		—		—		272,746
	Nonperforming	—		—		30		15,983		142		282		—		—		16,437
	Total leasing and other	102,324		65,303		49,483		50,978		15,773		5,322		—		—		289,183
Equipment lease financing and other
	Current period gross charge-offs	(606)		(1,581)		—		—		—		—		—		—		(2,187)
	Current period recoveries	185		349		21		18		11		21		—		—		605
	Total net (charge-offs) recoveries	(421)		(1,232)		21		18		11		21		—		—		(1,582)
Construction - other
	Performing	96,444		24,888		6,822		—		16		—		—		—		128,170
	Nonperforming	—		—		—		178		—		—		—		—		178
	Total construction - other	96,444		24,888		6,822		178		16		—		—		—		128,348
Construction - other
	Current period gross charge-offs	—		—		—		—		—		—		—		—		—
	Current period recoveries	—		—		—		—		—		—		—		—		—
	Total net (charge-offs) recoveries	—		—		—		—		—		—		—		—		—
Total
	Performing	$	1,600,144	$	782,832	$	393,651	$	430,916	$	318,108	$	602,764	$	1,034,983	$	5,363	$	5,168,761
	Nonperforming	385		2,590		3,354		19,018		1,199		24,305		9,519		—		60,370
	Total	$	1,600,529	$	785,422	$	397,005	$	449,934	$	319,307	$	627,069	$	1,044,502	$	5,363	$	5,229,131

The following table presents non-performing assets:

	March 31, 2021		December 31, 2020
	(in thousands)
Non-accrual loans	$	143,889	$	137,198
Loans 90 days or more past due and still accruing	8,559		9,929
Total non-performing loans	152,448		147,127
OREO (1)	3,664		4,178
Total non-performing assets	$	156,112	$	151,305

(1) Excludes $7.6 million and $8.1 million of residential mortgage properties for which formal foreclosure proceedings were in process as of March 31, 2021 and December 31, 2020, respectively.

The following tables present the aging of the amortized cost basis of loans, by class segment:

	30-59		60-89		≥ 90 Days
	Days Past		Days Past		Past Due		Non-
	Due		Due		and Accruing		Accrual		Current		Total
	(in thousands)
March 31, 2021
Real estate – commercial mortgage	$	9,596	$	1,516	$	2,187	$	51,977	$	7,076,861	$	7,142,137
Commercial and industrial	1,718		1,894		219		31,652		5,640,231		5,675,714
Real estate – residential mortgage	8,485		933		2,750		33,401		3,208,489		3,254,058
Real estate – home equity	2,795		1,062		3,148		9,368		1,133,585		1,149,958
Real estate – construction	170		—		—		1,441		1,081,883		1,083,494
Consumer	1,224		491		255		301		449,586		451,857
Equipment lease financing and other	101		142		—		15,749		217,776		233,768
Total	$	24,089	$	6,038	$	8,559	$	143,889	$	18,808,411	$	18,990,986

	30-59 Days Past Due		60-89 Days Past Due		≥ 90 Days Past Due and Accruing		Non- accrual		Current		Total
	(in thousands)
December 31, 2020
Real estate – commercial mortgage	$	14,999	$	9,273	$	1,177	$	51,470	$	7,028,173	$	7,105,092
Commercial and industrial	11,285		1,068		616		31,993		5,625,866		5,670,828
Real estate – residential mortgage	22,281		7,675		4,687		26,107		3,081,165		3,141,915
Real estate – home equity	5,622		1,654		2,753		9,588		1,183,296		1,202,913
Real estate – construction	1,938		—		155		1,395		1,043,730		1,047,218
Consumer	3,036		501		417		332		462,486		466,772
Equipment lease financing and other	838		150		124		16,313		248,657		266,082
Total	$	59,999	$	20,321	$	9,929	$	137,198	$	18,673,373	$	18,900,820

Collateral-Dependent Loans

A financial asset is considered to be collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. For all classes of financial assets deemed collateral-dependent, the Corporation elected the practical expedient to estimate expected credit losses based on the collateral’s fair value less cost to sell. In most cases, the Corporation records a partial charge-off to reduce the loan’s carrying value to the collateral’s fair value less cost to sell. Substantially all of the collateral supporting collateral-dependent financial assets consists

of various types of real estate, including residential properties, commercial properties, such as retail centers, office buildings, and lodging, agriculture land, and vacant land.

Troubled Debt Restructurings

The following table presents TDRs, by class segment:

	March 31, 2021		December 31, 2020
	(in thousands)
Real estate - commercial mortgage	$	27,961	$	28,451
Commercial and industrial	7,041		6,982
Real estate - residential mortgage	18,214		18,602
Real estate - home equity	13,674		14,391
Real estate - construction	154		—
Consumer	5		—
Total accruing TDRs	67,049		68,426
Non-accrual TDRs (1)	44,986		35,755
Total TDRs	$	112,035	$	104,181

(1)Included in non-accrual loans in the preceding table detailing non-performing assets.

The following table presents TDRs, by class segment, for loans that were modified during the three months ended March 31, 2021 and 2020:

	Three months ended March 31
	2021			2020
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
	(dollars in thousands)
Commercial and industrial	4	$	1,894	1	$	74
Real estate - commercial mortgage	2	4,162		1	392
Real estate - residential mortgage	23	7,626		7	660
Real estate - home equity	5	148		8	577
Real estate - construction	1	154		—	—
Total	35	$	13,984	17	$	1,703

Restructured loan modifications may include payment schedule modifications, interest rate concessions, bankruptcies, principal reduction or some combination of these concessions. The restructured loan modifications primarily included maturity date extensions, rate modifications and payment schedule modifications.

In accordance with regulatory guidance, payment schedule modifications granted after March 13, 2020 to borrowers impacted by the effects of the COVID-19 pandemic and who were not delinquent at the time of the payment schedule modifications have been excluded from TDRs. As of March 31, 2021 and 2020, payment schedule modifications having a recorded investment of $3.6 billion and $1.0 billion, respectively, were excluded from TDRs based on this regulatory guidance.

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Mortgage Servicing Rights

3 Months Ended

Mar. 31, 2021

Transfers and Servicing [Abstract]

Mortgage Servicing Rights

Mortgage Servicing Rights

The following table summarizes the changes in MSRs, which are included in other assets on the consolidated balance sheets:

	Three months ended March 31
	2021		2020
	(in thousands)
Amortized cost:
Balance at beginning of period	$	38,745	$	39,267
Originations of MSRs	2,811		1,478
Amortization	(3,753)		(1,891)
Balance at end of period	$	37,803	$	38,854
Valuation allowance:
Balance at beginning of period	$	(10,500)	$	—
Reduction (addition) to valuation allowance	6,100		(1,100)
Balance at end of period	$	(4,400)	$	(1,100)
Net MSRs at end of period	$	33,403	$	37,754

MSRs represent the economic value of contractual rights to service mortgage loans that have been sold. The total portfolio of mortgage loans serviced by the Corporation for unrelated third parties was $4.6 billion and $4.7 billion as of March 31, 2021 and December 31, 2020, respectively. Actual and expected prepayments of the underlying mortgage loans can impact the fair values of the MSRs. The Corporation accounts for MSRs at the lower of amortized cost or fair value.

The fair value of MSRs is estimated by discounting the estimated cash flows from servicing income, net of expense, over the expected life of the underlying loans at a discount rate commensurate with the risk associated with these assets. Expected life is based on the contractual terms of the loans, as adjusted for prepayment projections. The fair values of MSRs were $33.4 million and $28.2 million at March 31, 2021 and December 31, 2020, respectively. Based on its fair value analysis as of March 31, 2021, the Corporation determined that a $6.1 million reduction to the valuation allowance was required for the three months ended March 31, 2021, resulting in a total valuation allowance of $4.4 million as of March 31, 2021. The decrease to the valuation allowance was recorded as an increase to mortgage banking income on the consolidated statements of income for the three months ended March 31, 2021.

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Derivative Financial Instruments

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Derivative Financial Instruments

The Corporation manages its exposure to certain interest rate and foreign currency risks through the use of derivatives. Certain of the Corporation's outstanding derivative contracts are designated as hedges, and none are entered into for speculative purposes. The Corporation does enter into derivative contracts that are intended to economically hedge certain of its risks, even if hedge accounting does not apply or the Corporation elects not to apply hedge accounting.

The Corporation records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Corporation has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. For derivatives where hedge accounting is applied, changes in fair value are recognized in other comprehensive income. For derivatives where hedge accounting does not apply, changes in fair value are recognized in earnings as components of interest income, non-interest income or non-interest expense on the consolidated statements of income.

Derivative contracts create counterparty credit risk with both the Corporation's customers and with institutional derivative counterparties. The Corporation manages counterparty credit risk through its credit approval processes, monitoring procedures

and obtaining adequate collateral, when the Corporation determines it is appropriate to do so and in accordance with counterparty contracts.

For each of the derivatives, gross derivative assets and liabilities are recorded in other assets and other liabilities, respectively, on the consolidated balance sheets. Related gains and losses on these derivative instruments are recorded in other changes, net on the consolidated statement of cash flows.

Mortgage Banking Derivatives

In connection with its mortgage banking activities, the Corporation enters into commitments to originate certain fixed-rate residential mortgage loans for customers, also referred to as interest rate locks. In addition, the Corporation enters into forward commitments for the future sales or purchases of mortgage-backed securities to or from third-party counterparties to hedge the effect of changes in interest rates on the values of both the interest rate locks and mortgage loans held for sale. Forward sales commitments may also be in the form of commitments to sell individual mortgage loans at a fixed price at a future date. The amount necessary to settle each interest rate lock is based on the price that secondary market investors would pay for loans with similar characteristics, including interest rate and term, as of the date fair value is measured.

Interest Rate Swaps - Non-Designated Hedges

The Corporation enters into interest rate swaps with certain qualifying commercial loan customers to meet their interest rate risk management needs. The Corporation simultaneously enters into interest rate swaps with dealer counterparties, with identical notional amounts and terms. The net result of these interest rate swaps is that the customer pays a fixed rate of interest and the Corporation receives a floating rate. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings. The Corporation’s existing credit derivatives result from participations in interest rate swaps provided by external lenders as part of loan participation arrangements, therefore, are not used to manage interest rate risk in the Corporation’s assets or liabilities. Derivatives not designated as hedges are not speculative and result from a service the Corporation provides to certain lenders which participate in loans. The Corporation is required to clear all eligible interest rate swap contracts with a clearing agent and is subject to the regulations of the Commodity Futures Trading Commission.

Cash Flow Hedges of Interest Rate Risk

The Corporation’s objectives in using interest rate derivatives are to reduce volatility in net interest income and to manage its exposure to interest rate movements. To accomplish this objective, the Corporation primarily uses interest rate swaps as part of its interest rate risk management strategy. During the first quarter of 2021, the Corporation entered into interest rate swaps designated as cash flow hedges to hedge the variable cash flows associated with existing floating rate loans. These hedge contracts involve the receipt of fixed-rate amounts from a counterparty in exchange for the Corporation making floating-rate payments over the life of the agreements without exchange of the underlying notional amount.

For derivatives designated and that qualify as cash flow hedges of interest rate risk, the unrealized gain or loss on the derivative is recorded in AOCI and subsequently reclassified into interest income in the same period during which the hedged transaction affects earnings. Amounts reported in AOCI related to derivatives will be reclassified to interest income as interest payments are made on the Corporation’s variable-rate liabilities. During the next twelve months, the Corporation estimates that an additional $3.4 million will be reclassified as an increase to interest income.

Foreign Exchange Contracts

The Corporation enters into foreign exchange contracts to accommodate the needs of its customers. Foreign exchange contracts are commitments to buy or sell foreign currency on a specific date at a contractual price. The Corporation limits its foreign exchange exposure with customers by entering into contracts with institutional counterparties to mitigate its foreign exchange risk. The Corporation also holds certain amounts of foreign currency with international correspondent banks ("Foreign Currency Nostro Accounts"). The Corporation limits the total overnight net foreign currency open positions, which is defined as an aggregate of all outstanding contracts and Foreign Currency Nostro Account balances, to $500,000.

The following table presents a summary of the notional amounts and fair values of derivative financial instruments:

	March 31, 2021				December 31, 2020
	Notional Amount		Asset (Liability) Fair Value		Notional Amount		Asset (Liability) Fair Value
	(in thousands)
Interest Rate Locks with Customers
Positive fair values	$	274,909	$	2,198	$	382,903	$	8,034
Negative fair values	40,007		(316)		3,154		(35)
Forward Commitments
Positive fair values	91,264		4,650		—		—
Negative fair values	—		—		292,262		(2,263)
Interest Rate Swaps with Customers
Positive fair values	3,169,658		179,934		3,834,062		330,951
Negative fair values	769,300		(9,721)		45,640		(2)
Interest Rate Swaps with Dealer Counterparties
Positive fair values	769,300		9,721		45,640		2
Negative fair values	3,169,658		(98,368)		3,834,062		(165,205)
Interest Rate Swaps used in Cash Flow Hedges
Positive fair values	—		305		—		—
Negative fair values	500,000		(492)		—		—
Foreign Exchange Contracts with Customers
Positive fair values	12,196		280		1,121		5
Negative fair values	552		(14)		5,963		(275)
Foreign Exchange Contracts with Correspondent Banks
Positive fair values	2,821		43		6,372		318
Negative fair values	12,213		(258)		1,422		(5)

The following table presents the effect of fair value and cash flow hedge accounting on accumulated other comprehensive income for the three months ended March 31, 2021:

	Amount of Loss Recognized in OCI on Derivative		Amount of Loss Recognized in OCI Included Component		Amount of Gain or (Loss) Recognized in OCI Excluded Component		Location of Gain or (Loss) Recognized from AOCI into Income	Amount of Gain Reclassified from AOCI into Income		Amount of Gain Reclassified from AOCI into Income Included Component		Amount of Gain or (Loss) Reclassified from AOCI into Income Excluded Component
	(in thousands)
Derivatives in Cash Flow Hedging Relationships:
Interest Rate Products	$	(2,065)	$	(2,065)	$	—	Interest Income	$	144	$	144	$	—

The following table presents the effect of fair value and cash flow hedge accounting on the consolidated statements of income for the three months ended March 31, 2021:

	Consolidated Statements of Income Classification
	Interest Income
Total amounts of income line items presented in the consolidated statements of income in which the effects of fair value or cash flow hedges are recorded	$	144
The effects of fair value and cash flow hedging:
Gain or (loss) on cash flow hedging relationships	—
Interest contracts:
Amount of gain reclassified from AOCI into income	144
Amount of gain or (loss) reclassified from AOCI into income as a result that a forecasted transaction is no longer probable of occurring	—
Amount of Gain Reclassified from AOCI into Income - Included Component	144
Amount of Gain or (Loss) Reclassified from AOCI into Income - Excluded Component	—

The following table presents a summary of the fair value gains (losses) on derivative financial instruments:

	Consolidated Statements of Income Classification	Three months ended March 31
		2021		2020
		(in thousands)
Mortgage banking derivatives (1)	Mortgage banking income	$	796	$	1,040
Interest rate swaps	Other expense	(104)		72
Foreign exchange contracts	Other income	8		119
Net fair value gains on derivative financial instruments		$	700	$	1,231

(1) Includes interest rate locks with customers and forward commitments.

Fair Value Option

The Corporation has elected to measure mortgage loans held for sale at fair value. The following table presents a summary of mortgage loans held for sale and the impact of the fair value election on the consolidated financial statements as of the periods shown:

	March 31, 2021		December 31, 2020
	(in thousands)
Amortized cost (1)	$	33,801	$	80,662
Fair value	34,092		83,886

(1) Cost basis of mortgage loans held for sale represents the unpaid principal balance.

Losses related to changes in fair values of mortgage loans held for sale were $2.9 million for the three months ended March 31, 2021 compared to gains of $733,000 for the three months ended March 31, 2020.

Balance Sheet Offsetting

Although certain financial assets and liabilities may be eligible for offset on the consolidated balance sheets because they are subject to master netting arrangements or similar agreements, the Corporation elects to not offset such qualifying assets and liabilities.

The Corporation is a party to interest rate swaps with financial institution counterparties and customers. Under these agreements, the Corporation has the right to net-settle multiple contracts with the same counterparty in the event of default on,

or termination of, any one contract. Cash collateral is posted by the party with a net liability position in accordance with contract thresholds and can be used to settle the fair value of the interest rate swap agreements in the event of default. A daily settlement occurs through a clearing agent for changes in the fair value of centrally cleared derivatives. Not all of the derivatives are required to be cleared daily through a clearing agent. As a result, the total fair values of interest rate swap derivative assets and liabilities recognized on the consolidated balance sheet are not equal and offsetting.

The Corporation is also a party to foreign currency exchange contracts with financial institution counterparties, under which the Corporation has the right to net-settle multiple contracts with the same counterparty in the event of default on, or termination of, any one contract. As with interest rate swaps, collateral is posted by the party with a net liability position in accordance with contract thresholds and can be used to settle the fair value of the foreign currency exchange contracts in the event of default.

The Corporation also enters into agreements with customers in which it sells securities subject to an obligation to repurchase the same or similar securities, referred to as repurchase agreements. Under these agreements, the Corporation may transfer legal control over the assets but still maintain effective control through agreements that both entitle and obligate the Corporation to repurchase the assets. Therefore, repurchase agreements are reported as secured borrowings, classified in short-term borrowings on the consolidated balance sheets, while the securities underlying the repurchase agreements remain classified with AFS investment securities on the consolidated balance sheets. The Corporation has no intention of setting off these amounts, therefore, these repurchase agreements are not eligible for offset.

As of March 31, 2021, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $492,000. As of March 31, 2021, the Company has minimum collateral posting thresholds with certain of its derivative counterparties and has posted collateral of $143.1 million. If the Company had breached any of these provisions at March 31, 2021, it could have been required to settle its obligations under the agreements at their termination value of $492,000.

The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets:

	Gross Amounts		Gross Amounts Not Offset
	Recognized		on the Consolidated
	on the		Balance Sheets
	Consolidated		Financial		Cash		Net
	Balance Sheets		Instruments(1)		Collateral (2)		Amount
	(in thousands)
March 31, 2021
Interest rate swap derivative assets	$	189,960	$	(11,779)	$	—	$	178,181
Foreign exchange derivative assets with correspondent banks	43		(43)		—		—
Total	$	190,003	$	(11,822)	$	—	$	178,181
Interest rate swap derivative liabilities	$	108,581	$	(11,779)	$	(96,802)	$	—
Foreign exchange derivative liabilities with correspondent banks	258		(43)		—		215
Total	$	108,839	$	(11,822)	$	(96,802)	$	215
December 31, 2020
Interest rate swap derivative assets	$	330,951	$	(2)	$	—	$	330,949
Foreign exchange derivative assets with correspondent banks	318		(5)		—		313
Total	$	331,269	$	(7)	$	—	$	331,262
Interest rate swap derivative liabilities	$	165,205	$	(2)	$	(165,203)	$	—
Foreign exchange derivative liabilities with correspondent banks	5		(5)		—		—
Total	$	165,210	$	(7)	$	(165,203)	$	—

(1)For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default.

(2)Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate swap transactions and foreign exchange contracts with financial institution counterparties. Interest rate swaps with customers are collateralized by the same collateral securing the underlying loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.

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Tax Credit Investments

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Tax Credit Investments

Tax Credit Investments

TCIs are primarily for investments promoting qualified affordable housing projects and investments in community development entities. Investments in these projects generate a return primarily through the realization of federal income tax credits and deductions for operating losses over a specified time period.

The TCIs are included in other assets, with any unfunded equity commitments recorded in other liabilities on the consolidated balance sheets. Certain TCIs qualify for the proportional amortization method and are amortized over the period the Corporation expects to receive the tax credits, with the expense included within income taxes on the consolidated statements of income. Other TCIs are accounted for under the equity method of accounting, with amortization included within non-interest expense on the consolidated statements of income. This amortization includes equity in partnership losses and the systematic write-down of investments over the period in which income tax credits are earned. All of the TCIs are evaluated for impairment at the end of each reporting period.

The following table presents the balances of the Corporation's TCIs and related unfunded commitments:

		March 31,		December 31,
		2021		2020
Included in other assets:		(in thousands)
Affordable housing tax credit investment, net		$	145,888	$	152,203
Other tax credit investments, net		58,782		59,224
	Total TCIs, net	$	204,670	$	211,427
Included in other liabilities:
Unfunded affordable housing tax credit commitments		$	30,762	$	31,562
Other tax credit liabilities		49,491		49,491
	Total unfunded tax credit commitments and liabilities	$	80,253	$	81,053

The following table presents other information relating to the Corporation's TCIs:

		Three months ended
		March 31
		2021		2020
Components of income taxes:		(in thousands)
Affordable housing tax credits and other tax benefits		$	(6,488)	$	(7,194)
Other tax credit investment credits and tax benefits		(723)		(941)
Amortization of affordable housing investments, net of tax benefit		4,366		5,024
Deferred tax expense		160		208
	Total net reduction in income tax expense	$	(2,685)	$	(2,903)
Amortization of TCIs:
Affordable housing tax credits investment		$	986	$	1,022
Other tax credit investment amortization		545		428
	Total amortization of TCIs	$	1,531	$	1,450

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Accumulated Other Comprehensive Income

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Income

The following table presents changes in OCI:

	Before-Tax Amount		Tax Effect		Net of Tax Amount
Three months ended March 31, 2021	(in thousands)
Unrealized loss on securities	$	(51,751)	$	11,753	$	(39,999)
Reclassification adjustment for securities gains included in net income (1)	487		(110)		377
Amortization of net unrealized losses on AFS securities transferred to HTM (2)	2,312		(525)		1,787
Net unrealized loss on interest rate swaps used in cash flow hedges (3)	(2,209)		502		(1,707)
Amortization of net unrecognized pension and postretirement items (4)	370		(81)		289
Total OCI	$	(50,791)	$	11,538	$	(39,253)
Three months ended March 31, 2020
Unrealized gain on securities	$	22,380	$	(4,949)	$	17,431
Reclassification adjustment for securities gains included in net income (1)	(46)		10		(36)
Amortization of net unrealized losses on AFS securities transferred to HTM (2)	1,022		(227)		795
Amortization of net unrecognized pension and postretirement items (4)	328		(73)		255
Total OCI	$	23,684	$	(5,239)	$	18,445

(1)    Amounts reclassified out of AOCI. Before-tax amounts included in "Investment securities gains, net" on the Consolidated Statements of Income. See Note 3, "Investment Securities," for additional details.

(2)    Amounts reclassified out of AOCI. Before-tax amounts included as a reduction to "Interest Income" on the Consolidated Statements of Income.

(3)    Amounts reclassified out of AOCI. Before-tax amounts included in "Interest Income" on the Consolidated Statements of Income.

(4)    Amounts reclassified out of AOCI. Before-tax amounts included in "Salaries and employee benefits" on the Consolidated Statements of Income. See Note 12, "Employee Benefit Plans," for additional details.

The following table presents changes in each component of accumulated other comprehensive income (loss), net of tax:

	Unrealized Gains (Losses) on Investment Securities		Net Unrealized (Loss) on Interest Rate Swaps used in Cash Flow Hedges		Unrecognized Pension and Postretirement Plan Income (Costs)		Total
	(in thousands)
Three months ended March 31, 2021
Balance at December 31, 2020	$	81,604	$	—	$	(16,513)	$	65,091
OCI before reclassifications	(39,999)		—		—		(39,999)
Amounts reclassified from AOCI	377		(1,707)		289		(1,042)
Amortization of net unrealized losses on AFS securities transferred to HTM	1,787		—		—		1,787
Balance at March 31, 2021	$	43,769	$	(1,707)	$	(16,224)	$	25,838
Three months ended March 31, 2020
Balance at December 31, 2019	$	14,864	$	—	$	(15,001)	$	(137)
OCI before reclassifications	17,431		—		—		17,431
Amounts reclassified from AOCI	(36)		—		255		219
Amortization of net unrealized losses on AFS securities transferred to HTM	795		—		—		795
Balance at March 31, 2020	$	33,054	$	—	$	(14,746)	$	18,308

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Fair Value Measurements

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

FASB ASC Topic 820 establishes a fair value hierarchy for the inputs to valuation techniques used to measure assets and liabilities at fair value using the following three categories (from highest to lowest priority):

•Level 1 – Inputs that represent quoted prices for identical instruments in active markets.

•Level 2 – Inputs that represent quoted prices for similar instruments in active markets, or quoted prices for identical instruments in non-active markets. Also includes valuation techniques whose inputs are derived principally from observable market data other than quoted prices, such as interest rates or other market-corroborated means.

•Level 3 – Inputs that are largely unobservable, as little or no market data exists for the instrument being valued.

All assets and liabilities measured at fair value on both a recurring and nonrecurring basis, have been categorized into the above three levels. The following tables present assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets:

	March 31, 2021
	Level 1		Level 2		Level 3		Total
	(in thousands)
Loans held for sale	$	—	$	34,092	$	—	$	34,092
Available for sale investment securities:
State and municipal securities	—		994,760		—		994,760
Corporate debt securities	—		359,371		—		359,371
Collateralized mortgage obligations	—		399,881		—		399,881
Residential mortgage-backed securities	—		255,364		—		255,364
Commercial mortgage-backed securities	—		673,017		—		673,017
Auction rate securities	—		—		76,204		76,204
Total available for sale investment securities	—		2,682,393		76,204		2,758,597
Other assets:
Investments held in Rabbi Trust	25,374		—		—		25,374
Derivative assets	323		196,808		—		197,131
Total assets	$	25,697	$	2,913,293	$	76,204	$	3,015,194
Other liabilities:
Deferred compensation liabilities	$	25,374	$	—	$	—	$	25,374
Derivative liabilities	272		108,897		—		109,169
Total liabilities	$	25,646	$	108,897	$	—	$	134,543

	December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in thousands)
Loans held for sale	$	—	$	83,886	$	—	$	83,886
Available for sale investment securities:
State and municipal securities	—		952,613		—		952,613
Corporate debt securities	—		367,145		—		367,145
Collateralized mortgage obligations	—		503,766		—		503,766
Residential mortgage-backed securities	—		377,998		—		377,998
Commercial mortgage-backed securities	—		762,415		—		762,415
Auction rate securities	—		—		98,206		98,206
Total available for sale investment securities	—		2,963,937		98,206		3,062,143
Other assets:
Investments held in Rabbi Trust	24,383		—		—		24,383
Derivative assets	323		338,987		—		339,310
Total assets	$	24,706	$	3,386,810	$	98,206	$	3,509,722
Other liabilities:
Deferred compensation liabilities	$	24,383	$	—	$	—	$	24,383
Derivative liabilities	280		167,505		—		167,785
Total liabilities	$	24,663	$	167,505	$	—	$	192,168

The valuation techniques used to measure fair value for the items in the preceding tables are as follows:

Loans held for sale – This category includes mortgage loans held for sale that are measured at fair value. Fair values as of March 31, 2021 and December 31, 2020 were based on the price that secondary market investors were offering for loans with similar characteristics. See "Note 6 - Derivative Financial Instruments" for details related to the Corporation’s election to measure assets and liabilities at fair value.

Available for sale investment securities – Included in this asset category are debt securities. Level 2 investment securities are valued by a third-party pricing service. The pricing service uses pricing models that vary based on asset class and incorporate available market information, including quoted prices of investment securities with similar characteristics. Because many fixed income securities do not trade on a daily basis, pricing models use available information, as applicable, through processes such as benchmark yield curves, benchmarking of like securities, sector groupings and matrix pricing.

Standard market inputs include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data, including market research publications. For certain security types, additional inputs may be used, or some of the standard market inputs may not be applicable.

•State and municipal securities/Collateralized mortgage obligations/Residential mortgage-backed securities/Commercial mortgage-backed securities – These debt securities are classified as Level 2. Fair values are determined by a third-party pricing service, as detailed above.

•Corporate debt securities – This category consists of subordinated debt and senior debt issued by financial institutions ($355.0 million at March 31, 2021 and $362.8 million at December 31, 2020) and other corporate debt issued by non-financial institutions ($4.4 million at both March 31, 2021 and December 31, 2020).

•Auction rate securities – Due to their illiquidity, ARCs are classified as Level 3 investment securities and are valued through the use of an expected cash flows model prepared by a third-party valuation expert. The assumptions used in preparing the expected cash flows model include estimates for coupon rates, time to maturity and market rates of return. The most significant unobservable input to the expected cash flows model is an assumed return to market liquidity sometime in the next five years. If the assumed return to market liquidity was lengthened beyond the next five years, this would result in a decrease in the fair value of these ARCs. The Corporation believes that the trusts underlying the ARCs will self-liquidate as student loans are repaid. All of the loans underlying the ARCs have

principal payments which are guaranteed by the federal government. Level 3 fair values are tested by management through the performance of a trend analysis of the market price and discount rate. Changes in the price and discount rates are compared to changes in market data, including bond ratings, parity ratios, balances and delinquency levels.

Investments held in Rabbi Trust – This category consists of mutual funds that are held in trust for employee deferred compensation plans that the Corporation has elected to measure at fair value. Shares of mutual funds are valued based on net asset value, which represent quoted market prices for the underlying shares held in the mutual funds, and as such, are classified as Level 1.

Derivative assets – Fair value of foreign currency exchange contracts classified as Level 1 assets ($323,000 at both March 31, 2021 and December 31, 2020). The mutual funds and foreign exchange prices used to measure these items at fair value are based on quoted prices for identical instruments in active markets.

Level 2 assets, representing the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ($6.8 million at March 31, 2021 and $8.0 million at December 31, 2020) and the fair value of interest rate swaps ($190.0 million at March 31, 2021 and $331.0 million at December 31, 2020). The fair values of the Corporation’s interest rate locks, forward commitments and interest rate swaps represent the amounts that would be required to settle the derivative financial instruments at the balance sheet date. See "Note 6 - Derivative Financial Instruments," for additional information.

Deferred compensation liabilities – Fair value of amounts due to employees under deferred compensation plans, classified as Level 1 liabilities and are included in other liabilities on the consolidated balance sheets. The fair values of these liabilities are determined in the same manner as the related assets, as described under the heading "Investments held in Rabbi Trust" above.

Derivative liabilities – Level 1 liabilities, representing the fair value of foreign currency exchange contracts ($272,000 at March 31, 2021 and $280,000 at December 31, 2020).

Level 2 liabilities, representing the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors ($316,000 at March 31, 2021 and $2.3 million at December 31, 2020 and the fair value of interest rate swaps ($108.6 million at March 31, 2021 and $165.2 million at December 31, 2020).

The fair values of these liabilities are determined in the same manner as the related assets, as described under the heading "Derivative assets" above.

The following table presents the changes in the Corporation’s available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3):

		Single-issuer Trust Preferred Securities		ARCs
Three months ended March 31, 2021	(in thousands)
Balance at December 31, 2020		$	—	$	98,206
Sales		—		(24,619)
Unrealized adjustment to fair value (1)		—		2,617
Balance at March 31, 2021		$	—	$	76,204
Three months ended March 31, 2020
Balance at December 31, 2019		$	2,400	$	101,926
Unrealized adjustment to fair value (1)		(242)		(8,260)
Discount accretion		2		—
Balance at March 31, 2020		$	2,160	$	93,666

(1)Pooled trust preferred securities, single-issuer trust preferred securities and ARCs are classified as available for sale investment securities; as such, the unrealized adjustment to fair value was recorded as an unrealized holding gain (loss) and included as a component of "available for sale at estimated fair value" on the consolidated balance sheets.

Certain assets are not measured at fair value on an ongoing basis, but are subject to fair value measurement in certain circumstances, such as upon their acquisition or when there is evidence of impairment. The following table presents Level 3 financial assets measured at fair value on a nonrecurring basis:

	March 31, 2021		December 31, 2020
	(in thousands)
Loans, net	$	122,962	$	116,584
OREO	3,664		4,178
MSRs (1)	33,403		28,245
Total assets	$	160,029	$	149,007

(1)Amounts shown are estimated fair value. MSRs are recorded on the Corporation's consolidated balance sheets at the lower of amortized cost or fair value. See "Note 5 - Mortgage Servicing Rights" for additional information.

The valuation techniques used to measure fair value for the items in the table above are as follows:

•Net Loans – This category consists of loans that were individually evaluated for impairment and have been classified as Level 3 assets. See "Note 4 - Loans and Allowance for Credit Losses," for additional details.

•OREO – This category consists of OREO classified as Level 3 assets, for which the fair values were based on estimated selling prices less estimated selling costs for similar assets in active markets.

•MSRs - This category consists of MSRs, which were initially recorded at fair value upon the sale of residential mortgage loans to secondary market investors, and subsequently carried at the lower of amortized cost or fair value. MSRs are amortized as a reduction to servicing income over the estimated lives of the underlying loans. MSRs are stratified by product type and evaluated for impairment by comparing each stratum's carrying amount to its estimated fair value. Fair values are determined at the end of each quarter through a discounted cash flows valuation performed by a third-party valuation expert. Significant inputs to the valuation included expected net servicing income, the discount rate and the expected life of the underlying loans. Expected life is based on the contractual terms of the loans, as adjusted for prepayment projections. The weighted average annual constant prepayment rate and the weighted average discount rate used in the March 31, 2021 valuation were 15.3% and 9.5%, respectively. Management reviews the reasonableness of the significant inputs to the third-party valuation in comparison to market data. See "Note 5 - Mortgage Servicing Rights," for additional information.

In 2007, the Corporation received the Visa Shares in connection with a corporate restructuring undertaken by Visa, Inc. in contemplation of its initial public offering. These securities were considered equity securities without readily determinable fair values. As such, the approximately 133,000 Visa Shares owned were carried at a zero cost basis. During the first quarter of 2021, the Corporation sold all of its Visa Shares and recognized a $34.0 million gain.

The following tables present the carrying amounts and estimated fair values of the Corporation’s financial instruments for the current period. A general description of the methods and assumptions used to estimate such fair values follows:

	March 31, 2021
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents	$	1,661,876	$	1,661,876	$	—	$	—	$	1,661,876
FRB and FHLB stock	66,209		—		66,209		—		66,209
Loans held for sale	34,092		—		34,092		—		34,092
AFS securities	2,758,597		—		2,682,393		76,204		2,758,597
HTM securities	853,413		—		843,743		—		843,743
Net Loans	18,725,000		—		—		18,354,532		18,354,532
Accrued interest receivable	65,649		65,649		—		—		65,649
Other assets	510,534		276,659		196,808		37,067		510,534
FINANCIAL LIABILITIES
Demand and savings deposits	$	19,250,538	$	19,250,538	$	—	$	—	$	19,250,538
Brokered deposits	309,873		289,873		21,001		—		310,874
Time deposits	2,073,427		—		2,087,663		—		2,087,663
Short-term borrowings	520,989		520,989		—		—		520,989
Accrued interest payable	5,618		5,618		—		—		5,618
Long-term borrowings	626,407		—		607,577		—		607,577
Other liabilities	297,069		173,899		108,897		14,273		297,069

	December 31, 2020
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents	$	1,847,832	$	1,847,832	$	—	$	—	$	1,847,832
FRB and FHLB stock	92,129		—		92,129		—		92,129
Loans held for sale	83,886		—		83,886		—		83,886
AFS securities	3,062,143		—		2,963,937		98,206		3,062,143
HTM securities	278,281		—		296,857		—		296,857
Net Loans	18,623,253		—		—		18,354,532		18,354,532
Accrued interest receivable	72,942		72,942		—		—		72,942
Other assets	650,425		279,015		338,987		32,423		650,425
FINANCIAL LIABILITIES
Demand and savings deposits	$	18,279,358	$	18,279,358	$	—	$	—	$	18,279,358
Brokered deposits	335,185		295,185		41,206		—		336,391
Time deposits	2,224,665		—		2,246,457		—		2,246,457
Short-term borrowings	630,066		630,066		—		—		630,066
Accrued interest payable	10,365		10,365		—		—		10,365
Long-term borrowings	1,296,263		—		1,332,041		—		1,332,041
Other liabilities	338,747		156,869		167,505		14,373		338,747

Fair values of financial instruments are significantly affected by the assumptions used, principally the timing of future cash flows and discount rates. Because assumptions are inherently subjective in nature, the estimated fair values cannot be substantiated by comparison to independent market quotes and, in many cases, the estimated fair values could not necessarily be realized in an immediate sale or settlement of the instrument. The aggregate fair value amounts presented do not necessarily represent management’s estimate of the underlying value of the Corporation.

For short-term financial instruments, defined as those with remaining maturities of 90 days or less, and excluding those recorded at fair value on the Corporation’s consolidated balance sheets, book value was considered to be a reasonable estimate of fair value.

The following instruments are predominantly short-term:

Assets	Liabilities
Cash and cash equivalents	Demand and savings deposits
Accrued interest receivable	Short-term borrowings
	Accrued interest payable

FRB and FHLB stock represent restricted investments and are carried at cost on the consolidated balance sheets, which is a reasonable estimate of fair value.

As of March 31, 2021, fair values for loans and time deposits were estimated by discounting future cash flows using the current rates, as adjusted for liquidity considerations, at which similar loans would be made to borrowers and similar deposits would be issued to customers for the same remaining maturities. Fair values of loans also include estimated credit losses that would be assumed in a market transaction, which represents estimated exit prices.

Brokered deposits consists of demand and saving deposits, which are classified as Level 1, and time deposits, which are classified as Level 2. The fair value of these deposits are determined in a manner consistent with the respective type of deposits discussed above.

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Net Income Per Share

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Net Income Per Share

Net Income Per Share

Basic net income per share is calculated as net income available to common shareholders divided by the weighted average number of shares outstanding.

Diluted net income per share is calculated as net income available to common shareholders divided by the weighted average number of shares outstanding plus the incremental number of shares added as a result of converting common stock equivalents, calculated using the treasury stock method. The Corporation’s common stock equivalents consist of outstanding stock options, restricted stock, RSUs, and PSUs. PSUs are required to be included in weighted average diluted shares outstanding if performance measures, as defined in each PSU award agreement, are met as of the end of the period.

A reconciliation of weighted average shares outstanding used to calculate basic and diluted net income per share follows (in thousands, except per share data):

	Three months ended March 31
	2021		2020
Weighted average shares outstanding (basic)	162,441		163,475
Impact of common stock equivalents	1,296		942
Weighted average shares outstanding (diluted)	163,737		164,417
Per share:
Basic	$	0.43	$	0.16
Diluted	0.43		0.16

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

The Corporation grants equity awards to employees in the form of stock options, restricted stock, RSUs or PSUs under its Amended and Restated Equity and Cash Incentive Compensation Plan ("Employee Equity Plan"). Recent grants of equity awards under the Employee Equity Plan have generally been limited to RSUs and PSUs. In addition, employees may purchase stock under the Corporation’s Employee Stock Purchase Plan. The fair value of equity awards granted to employees is recognized as compensation expense over the period during which employees are required to provide service in exchange for such awards. Compensation expense for PSUs is also recognized over the period during which employees are required to provide service in exchange for such awards, however, compensation expense may vary based on the expectations for actual performance relative to defined performance measures.

The Corporation also grants equity awards to non-employee members of its board of directors and subsidiary bank boards of directors under the 2011 Directors’ Equity Participation Plan, which was amended and approved by shareholders as the Amended and Restated Directors’ Equity Participation Plan in 2019 ("Directors’ Plan"). Under the Directors’ Plan, the Corporation can grant equity awards to non-employee holding company and subsidiary bank directors in the form of stock options, restricted stock, RSUs or common stock. Recent grants of equity awards under the Directors’ Plan have been limited to RSUs.

Equity awards under the Employee Equity Plan are generally granted annually and become fully vested over or after a three-year vesting period. The vesting period for non-performance-based awards represents the period during which employees are required to provide service in exchange for such awards. Equity awards under the Directors' Plan are generally granted annually and become fully vested after a one-year vesting period. Certain events, as defined in the Employee Equity Plan and the Directors' Plan, result in the acceleration of the vesting of equity awards.

Fair values for RSUs and a majority of PSUs are based on the trading price of the Corporation’s stock on the date of grant and earn dividend equivalents during the vesting period, which are forfeitable if the awards do not vest. The fair value of certain PSUs are estimated through the use of the Monte Carlo valuation methodology as of the date of grant.

As of March 31, 2021, the Employee Equity Plan had 9.3 million shares reserved for future grants through 2023, and the Directors’ Plan had approximately 176,000 shares reserved for future grants through 2029.

The following table presents compensation expense and the related tax benefits for equity awards recognized in the consolidated statements of income:

	Three months ended March 31
	2021		2020
	(in thousands)
Compensation expense	$	1,902	$	1,619
Tax benefit	(414)		(344)
Stock-based compensation expense, net of tax benefit	$	1,488	$	1,275

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Employee Benefit Plans

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Employee Benefit Plans

Employee Benefit Plans

The net periodic pension cost for the Corporation’s Defined Benefit Pension Plan ("Pension Plan") consisted of the following components:

	Three months ended March 31
	2021		2020
	(in thousands)
Interest cost	$	561	$	681
Expected return on plan assets	(1,011)		(982)
Net amortization and deferral	504		465
Net periodic pension cost	$	54	$	164

The components of the net benefit for the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components:

	Three months ended March 31
	2021		2020
	(in thousands)
Interest cost	$	8	$	11
Net accretion and deferral	(134)		(137)
Net periodic benefit	$	(126)	$	(126)

The Corporation recognizes the funded status of its Pension Plan and Postretirement Plan on the consolidated balance sheets and recognizes the change in that funded status through other comprehensive income.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Commitments

The Corporation is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers.

Those financial instruments include commitments to extend credit and letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized on the Corporation’s consolidated balance sheets. Exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and letters of credit is represented by the outstanding amount of those instruments.

The Corporation records a reserve for unfunded lending commitments, included in ACL - OBS credit exposures, which represents management’s estimate of credit losses associated with unused commitments to extend credit and letters of credit. As of March 31, 2021 and December 31, 2020, the ACL - OBS credit exposures for unfunded lending commitments was $9.7 million and $9.1 million, respectively. See "Note 4 - Loans and Allowance for Credit Losses," for additional details.

The following table presents the Corporation's commitments to extend credit and letters of credit:

	March 31, 2021		December 31, 2020
	(in thousands)
Commitments to extend credit	$	9,018,523	$	8,651,055
Standby letters of credit	295,516		298,750
Commercial letters of credit	57,917		56,229

Residential Lending

The Corporation originates and sells residential mortgages to secondary market investors. The Corporation provides customary representations and warranties to secondary market investors that specify, among other things, that the loans have been underwritten to the standards of the secondary market investor. The Corporation may be required to repurchase specific loans, or reimburse the investor for a credit loss incurred on a sold loan if it is determined that the representations and warranties have not been met. Under some agreements with secondary market investors, the Corporation may have additional credit exposure beyond customary representations and warranties, based on the specific terms of those agreements.

The Corporation maintains a reserve for estimated losses related to loans sold to investors. As of both March 31, 2021 and December 31, 2020, the total reserve for losses on residential mortgage loans sold was $1.1 million, including reserves for both representation and warranty and credit loss exposures. With the adoption of CECL on January 1, 2020 the reserve for estimated losses on certain residential mortgage loans sold to investors was reclassified to ACL - OBS credit exposures. This reclassification resulted in a $2.1 million increase to ACL - OBS credit exposures and a corresponding decrease to the reserve for estimated losses related to loans sold to investors in the first quarter of 2020.

Legal Proceedings

The Corporation is involved in various pending and threatened claims and other legal proceedings in the ordinary course of its business activities. The Corporation evaluates the possible impact of these matters, taking into consideration the most recent information available. A loss reserve is established for those matters for which the Corporation believes a loss is both probable and reasonably estimable. Once established, the reserve is adjusted as appropriate to reflect any subsequent developments. Actual losses with respect to any such matter may be more or less than the amount estimated by the Corporation. For matters where a loss is not probable, or the amount of the loss cannot be reasonably estimated by the Corporation, no loss reserve is established.

In addition, from time to time, the Corporation is involved in investigations or other forms of regulatory or governmental inquiry covering a range of possible issues and, in some cases, these may be part of similar reviews of the specified activities of other companies. These inquiries or investigations could lead to administrative, civil or criminal proceedings involving the Corporation, and could result in fines, penalties, restitution, other types of sanctions or restrictions, or the need for the Corporation to undertake remedial actions, or to alter its business, financial or accounting practices. The Corporation’s practice is to cooperate fully with regulatory and governmental inquiries and investigations.

As of the date of this report, the Corporation believes that any liabilities, individually or in the aggregate, which may result from the final outcomes of pending legal proceedings, or regulatory or governmental inquiries or investigations, will not have a material adverse effect on the financial condition of the Corporation. However, legal proceedings, inquiries and investigations are often unpredictable, and it is possible that the ultimate resolution of any such matters, if unfavorable, may be material to the Corporation’s results of operations in any future period, depending, in part, upon the size of the loss or liability imposed and the operating results for the period, and could have a material adverse effect on the Corporation’s business. In addition, regardless of the ultimate outcome of any such legal proceeding, inquiry or investigation, any such matter could cause the Corporation to incur additional expenses, which could be significant, and possibly material, to the Corporation’s results of operations in any future period.

Kress v. Fulton Bank, N.A.

On October 15, 2019, a former Fulton Bank teller supervisor, D. Kress filed a putative collective and class action lawsuit on behalf of herself and other teller supervisors, tellers, and other similar non-exempt employees in the U.S. District Court for the District of New Jersey, D. Kress v. Fulton Bank, N.A., Case No. 1:19-cv-18985. Fulton Bank accepted summons without a formal service of process on January 20, 2020. The lawsuit alleges that Fulton Bank did not record or otherwise account for the amount of time D. Kress and putative collective and class members spent conducting branch opening security procedures. The allegation is that, as a result, Fulton Bank did not properly compensate those employees for their regular and overtime wages. The lawsuit alleges that by doing so, Fulton violated: (i) the federal Fair Labor Standards Act and seeks back overtime wages for a period of three years, liquidated damages and attorney fees and costs; (ii) the New Jersey State Wage and Hour Law and seeks back overtime wages for a period of six years, treble damages and attorney fees and costs; and (iii) the New Jersey Wage Payment Law and seeks back wages for a period of six years, treble damages and attorney fees and costs. The lawsuit also asserts New Jersey common law claims seeking compensatory damages and interest. The Corporation and counsel representing plaintiffs ("Plaintiffs’ Counsel") have reached and executed a formal Settlement Agreement to resolve this lawsuit. Plaintiffs’ Counsel has filed a Motion for Preliminary Approval of Class and Collective Settlement and Provisional Certification of Settlement Class and Collective ("the Motion") with the U.S. District Court for the District of New Jersey ("the Court"). The Corporation is not able to provide any assurance that the Court will grant the Motion. If the Court does grant the Motion, the Settlement Agreement will be administered according to its terms and thereafter subject to final approval by the Court. The financial terms of the Settlement Agreement are not expected to be material to the Corporation. The Corporation established an accrued liability during the third quarter of 2020 for the costs expected to be incurred in connection with the Settlement Agreement.

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Long-Term Borrowings	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Long-Term Borrowings	Long-Term BorrowingsPursuant to a cash tender offer, the Corporation purchased $75.0 million and $60.0 million of its subordinated notes which mature on November 15, 2024 and its senior notes which mature on March 16, 2022, respectively. The subordinated notes carry a fixed rate of 4.50% and an effective rate of 4.87% and the senior notes carry a fixed rate of 3.60% and an effective rate of 3.95%. The Corporation incurred $11.3 million in debt extinguishment costs and expensed $841,000 of unamortized discount costs. In addition, the Corporation prepaid $536.0 million of long-term FHLB advances and incurred $20.9 million in prepayment penalties.

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of PresentationThe accompanying unaudited Consolidated Financial Statements of the Corporation have been prepared in conformity with GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities as of the date of the financial statements as well as revenues and expenses during the period. Actual results could differ from those estimates. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. These Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2020. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. The Corporation evaluates subsequent events through the date of filing of this Form 10-Q with the SEC.

Recently Issued Accounting Standards

CECL Adoption

On January 1, 2020, the Corporation adopted ASU 2016-13, Financial Instruments - Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial Instruments. The Corporation adopted CECL using the modified retrospective method for all financial assets measured at amortized cost, net of investments in leases and OBS credit exposures. The Corporation recorded an increase of $58.3 million to the ACL on January 1, 2020 as a result of the adoption of CECL. Retained earnings decreased $43.8 million and deferred tax assets increased by $12.4 million. Included in the $58.3 million increase to the ACL was $2.1 million for certain OBS credit exposures that was previously recognized in other liabilities before the adoption of CECL.

CARES Act and Consolidated Appropriations Act - 2021

On March 27, 2020 the CARES Act was signed into law. The CARES Act includes an option for financial institutions to suspend the requirements of GAAP for certain loan modifications that would otherwise be categorized as a TDR. Certain conditions must be met with respect to the loan modification including that the modification is related to COVID-19 and the modified loan was not more than 30 days past due on December 31, 2019. On December 27, 2020, the 2021 Consolidated Appropriations Act was signed into law and this Act extended the relief for TDR treatment that was set to expire on December 31, 2020 to the earlier of 60 days after the national emergency termination date or January 1, 2022. The Corporation is applying the option under the CARES act for all loan modifications that qualify.

Recently Adopted Accounting Standards

On January 1, 2021, the Corporation adopted ASC Update 2019-12 Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The Corporation adopted this standards update effective with its March 31, 2021 quarterly report on Form 10-Q and it did not have a material impact on the consolidated financial statements.

On January 1, 2021, the Corporation adopted ASC Update 2021-01 Reference Rate Reform (Topic 848). This update permits entities to apply optional expedients in Topic 848 to derivative instruments modified because of LIBOR transition affected by changes to the interest rates used for discounting, margining or contract price alignment due to reference rate reform. This update was effective upon issuance and entities may elect to apply the guidance to modifications either retrospectively, as of any date from the beginning of any interim period that includes or is subsequent to March 12, 2020, or prospectively to new modifications from any date in an interim period that includes or is subsequent to January 7, 2021. The Corporation adopted this standards update retrospectively effective with its March 31, 2021 quarterly report on Form 10-Q and it did not have a material impact on the consolidated financial statements.

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Investment Securities (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Amortized Cost and Fair Values of Investment Securities

The following table presents the amortized cost and estimated fair values of investment securities for the periods presented:

	March 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for Sale	(in thousands)
State and municipal securities	$	953,601	$	42,412	$	(1,253)	$	994,760
Corporate debt securities	348,162		11,970		(761)		359,371
Collateralized mortgage obligations	390,253		10,633		(1,005)		399,881
Residential mortgage-backed securities	257,409		1,941		(3,986)		255,364
Commercial mortgage-backed securities	668,144		12,455		(7,582)		673,017
Auction rate securities	76,350		—		(146)		76,204
Total	$	2,693,919	$	79,411	$	(14,733)	$	2,758,597
Held to Maturity
Residential mortgage-backed securities	$	467,461	$	16,303	$	(8,025)	$	475,739
Commercial mortgage-backed securities	385,952		—		(17,948)		368,004
Total	$	853,413	$	16,303	$	(25,973)	$	843,743

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available for Sale	(in thousands)
State and municipal securities	$	891,327	$	61,286	$	—	$	952,613
Corporate debt securities	348,391		19,445		(691)		367,145
Collateralized mortgage obligations	491,321		12,560		(115)		503,766
Residential mortgage-backed securities	373,779		4,246		(27)		377,998
Commercial mortgage-backed securities	741,172		22,384		(1,141)		762,415
Auction rate securities	101,510		—		(3,304)		98,206
Total	$	2,947,500	$	119,921	$	(5,278)	$	3,062,143
Held to Maturity
Residential mortgage-backed securities	$	278,281	$	18,576	$	—	$	296,857

Schedule of Amortized Cost and Fair Values of Debt Securities by Contractual Maturities

The amortized cost and estimated fair values of debt securities as of March 31, 2021, by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities as certain investment securities are subject to call or prepayment with or without call or prepayment penalties.

		March 31, 2021
		Available for Sale				Held to Maturity
		Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(in thousands)
Due in one year or less		$	13,107	$	13,171	$	—	$	—
Due from one year to five years		37,176		38,417		—		—
Due from five years to ten years		343,642		355,683		—		—
Due after ten years		984,188		1,023,064		—		—
		1,378,113		1,430,335		—		—
Residential mortgage-backed securities(1)		257,409		255,364		467,461		475,739
Commercial mortgage-backed securities(1)		668,144		673,017		385,952		368,004
Collateralized mortgage obligations(1)		390,253		399,881		—		—
Total		$	2,693,919	$	2,758,597	$	853,413	$	843,743
(1) Mortgage-backed securities and collateralized mortgage obligations do not have stated maturities and are dependent upon the interest rate environment and prepayments on the underlying loans.

Summary of Gains and Losses from Equity and Debt Securities, and Losses Recognized from Other-than-Temporary Impairment

The following table presents information related to the gross realized gains and losses on the sales of investment securities for the periods presented:

	Gross Realized Gains		Gross Realized Losses		Net Gains
Three months ended	(in thousands)
March 31, 2021	$	34,016	$	(541)	$	33,475
March 31, 2020	117		(71)		46

Gross Unrealized Losses and Fair Values of Investments by Category and Length of Time in Continuous Unrealized Loss Position

The following tables present the gross unrealized losses and estimated fair values of investment securities, aggregated by category and length of time that individual securities have been in a continuous unrealized loss position for the periods presented:

	March 31, 2021
	Less than 12 months					12 months or longer					Total
	Number of Securities	Estimated Fair Value		Unrealized Losses		Number of Securities	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Available for Sale		(in thousands)
State and municipal securities	21	$	88,141	$	(1,253)	—	$	—	$	—	$	88,141	$	(1,253)
Corporate debt securities	7	41,956		(582)		2	15,328		(179)		57,284		(761)
Collateralized mortgage obligations	2	55,305		(1,005)		—	—		—		55,305		(1,005)
Residential mortgage-backed securities	8	173,908		(3,986)		—	—		—		173,908		(3,986)
Commercial mortgage-backed securities	10	183,175		(7,582)		—	—		—		183,175		(7,582)
Auction rate securities	—	—		—		118	76,204		(146)		76,204		(146)
Total available for sale	48	$	542,485	$	(14,408)	120	$	91,532	$	(325)	$	634,017	$	(14,733)
Held to Maturity
Residential mortgage-backed securities	12	$	205,072	$	(8,025)	—	$	—	$	—	$	205,072	$	(8,025)
Commercial mortgage-backed securities	21	368,004		(17,948)		—	—		—		368,004		(17,948)
Total	33	$	573,076	$	(25,973)	—	$	—	$	—	$	573,076	$	(25,973)

	December 31, 2020
	Less than 12 months					12 months or longer					Total
	Number of Securities	Estimated Fair Value		Unrealized Losses		Number of Securities	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
Available for Sale	(in thousands)
Corporate debt securities	9	$	44,528	$	(377)	1	$	6,871	$	(314)	$	51,399	$	(691)
Collateralized mortgage obligations	3	57,601		(115)		—	—		—		57,601		(115)
Residential mortgage-backed securities	1	20,124		(27)		—	—		—		20,124		(27)
Commercial mortgage-backed securities	9	144,383		(1,141)		—	—		—		144,383		(1,141)
Auction rate securities	—	—		—		162	98,206		(3,304)		98,206		(3,304)
Total available for sale(1)	22	$	266,636	$	(1,660)	163	$	105,077	$	(3,618)	$	371,713	$	(5,278)

(1) No HTM securities were in an unrealized loss position as of December 31, 2020.

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Loans and Allowance for Credit Losses (Tables)

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Summary of Gross Loans by Type

Net Loans are summarized as follows:

	March 31, 2021		December 31, 2020
	(in thousands)
Real estate - commercial mortgage	$	7,142,137	$	7,105,092
Commercial and industrial (1)	5,675,714		5,670,828
Real-estate - residential mortgage	3,254,058		3,141,915
Real-estate - home equity	1,149,958		1,202,913
Real-estate - construction	1,083,494		1,047,218
Consumer	451,857		466,772
Equipment lease financing and other	252,930		284,377
Overdrafts	1,373		4,806
Gross loans	19,011,521		18,923,921
Unearned income	(20,535)		(23,101)
Net Loans	$	18,990,986	$	18,900,820

(1) Includes PPP loans totaling $1.7 billion and $1.6 billion as of March 31, 2021 and December 31, 2020, respectively.

Schedule of Allowance for Credit Losses

The following table presents the components of the ACL:

	March 31, 2021		December 31, 2020
	(in thousands)
ACL - loans	$	265,986	$	277,567
ACL - OBS credit exposure	14,273		14,373
Total ACL	$	280,259	$	291,940

Activity in the Allowance for Credit Losses

The following table presents the activity in the ACL:

	Three months ended March 31
	2021		2020
	(in thousands)
Balance at beginning of period	$	291,940	$	166,209
Impact of adopting CECL on January 1, 2020 (1)	—		58,349
Loans charged off	(8,202)		(14,003)
Recoveries of loans previously charged off	2,021		2,887
Net loans charged off	(6,181)		(11,116)
Provision for credit losses (2)	(5,500)		44,029
Balance at end of period	$	280,259	$	257,471

(1) Includes $12.6 million of reserves for OBS credit exposures as of January 1, 2020.

(2) Includes $(100,000) and $3.8 million related to OBS credit exposures for the three months ended March 31, 2021 and 2020, respectively.

The following table presents the activity in the ACL - loans by portfolio segment:

	Real Estate - Commercial Mortgage		Commercial and Industrial		Real Estate - Home Equity		Real Estate - Residential Mortgage		Real Estate  - Construction		Consumer		Equipment lease financing, other and overdrafts		Total
	(in thousands)
Three months ended March 31, 2021
Balance at December 31, 2020	$	103,425	$	74,771	$	14,232	$	51,995	$	15,608	$	10,905	$	6,633	$	277,567
Loans charged off	(1,837)		(4,319)		(212)		(192)		(39)		(635)		(968)		(8,202)
Recoveries of loans previously charged off	174		769		51		95		384		389		159		2,021
Net loans recovered (charged off)	(1,663)		(3,550)		(161)		(97)		345		(246)		(809)		(6,181)
Provision for loan losses (1)	(786)		(27)		(341)		(1,903)		(874)		(1,247)		(222)		(5,400)
Balance at March 31, 2021	$	100,976	$	71,194	$	13,730	$	49,995	$	15,079	$	9,412	$	5,602	$	265,986
Three months ended March 31, 2020
Balance at December 31, 2019	$	45,610	$	68,602	$	17,744	$	19,771	$	4,443	$	3,762	$	3,690	$	163,622
Impact of adopting CECL on January 1, 2020	29,361		(18,576)		(65)		21,235		4,015		5,969		3,784		45,723
Loans charged off	(855)		(10,899)		(316)		(187)		—		(1,213)		(533)		(14,003)
Recoveries of loans previously charged off	244		1,734		646		85		70		—		108		2,887
Net loans (charged off) recovered	(611)		(9,165)		330		(102)		70		(1,213)		(425)		(11,116)
Provision for loan losses (1)	15,959		22,745		(2,756)		1,523		(130)		1,347		1,591		40,279
Balance at March 31, 2020	$	90,319	$	63,606	$	15,253	$	42,427	$	8,398	$	9,865	$	8,640	$	238,508

(1) Provision included in the table only includes the portion related to Net Loans.

Total Impaired Loans by Class Segment

The following table presents total non-accrual loans, by class segment:

	March 31, 2021						December 31, 2020
	With a Related Allowance		Without a Related Allowance		Total		With a Related Allowance		Without a Related Allowance		Total
	(in thousands)
Real estate - commercial mortgage	$	21,107	$	30,870	$	51,977	$	19,909	$	31,561	$	51,470
Commercial and industrial	13,012		18,640		31,652		13,937		18,056		31,993
Real estate - residential mortgage	31,203		2,198		33,401		24,590		1,517		26,107
Real estate - home equity	9,368		—		9,368		9,398		190		9,588
Real estate - construction	544		897		1,441		437		958		1,395
Consumer	301		—		301		332		—		332
Equipment lease financing and other	6,462		9,287		15,749		—		16,313		16,313
	$	81,997	$	61,892	$	143,889	$	68,603	$	68,595	$	137,198

Financing Receivable Credit Quality Indicators

The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the current period:

		March 31, 2021
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2021		2020		2019		2018		2017		Prior		Cost Basis		Cost Basis		Total
Real estate - construction(1)
	Pass	$	14,615	$	233,770	$	201,440	$	218,467	$	80,686	$	142,339	$	36,046	$	—	$	927,363
	Special Mention	110		—		—		—		—		13,195		—		—		13,305
	Substandard or Lower	—		—		154		—		1,976		3,520		406		—		6,056
	Total real estate - construction	14,725		233,770		201,594		218,467		82,662		159,054		36,452		—		946,724
Real estate - construction(1)
	Current period gross charge-offs	—		—		(39)		—		—		—		—		—		(39)
	Current period recoveries	—		—		—		—		—		384		—		—		384
	Total net (charge-offs) recoveries	—		—		(39)		—		—		384		—		—		345
Commercial and industrial
	Pass	885,616		1,624,535		481,038		290,788		201,910		726,981		1,205,065		—		5,415,933
	Special Mention	143		9,136		20,949		16,337		10,413		30,861		48,939		—		136,778
	Substandard or Lower	—		2,847		7,167		13,503		10,638		34,805		54,043		—		123,003
	Total commercial and industrial	885,759		1,636,518		509,154		320,628		222,961		792,647		1,308,047		—		5,675,714
Commercial and industrial
	Current period gross charge-offs	—		—		(613)		(2,871)		(60)		(775)		—		—		(4,319)
	Current period recoveries	—		—		37		126		36		570		—		—		769
	Total net (charge-offs) recoveries	—		—		(576)		(2,745)		(24)		(205)		—		—		(3,550)
Real estate - commercial mortgage
	Pass	200,885		993,776		926,352		670,684		767,399		2,800,409		49,207		321		6,409,033
	Special Mention	—		23,282		30,629		92,800		75,417		248,403		2,406		—		472,937
	Substandard or Lower	—		1,028		24,008		10,673		46,460		174,421		3,577		—		260,167
	Total real estate - commercial mortgage	200,885		1,018,086		980,989		774,157		889,276		3,223,233		55,190		321		7,142,137
Real estate - commercial mortgage
	Current period gross charge-offs	—		—		—		—		(1,719)		(118)		—		—		(1,837)
	Current period recoveries	—		—		—		—		—		174		—		—		174
	Total net (charge-offs) recoveries	—		—		—		—		(1,719)		56		—		—		(1,663)
Total
	Pass	$	1,101,116	$	2,852,081	$	1,608,830	$	1,179,939	$	1,049,995	$	3,669,729	$	1,290,318	$	321	$	12,752,329
	Special Mention	253		32,418		51,578		109,137		85,830		292,459		51,345		—		623,020
	Substandard or Lower	—		3,875		31,329		24,176		59,074		212,746		58,026		—		389,226
	Total	$	1,101,369	$	2,888,374	$	1,691,737	$	1,313,252	$	1,194,899	$	4,174,934	$	1,399,689	$	321	$	13,764,575

(1) Excludes real estate - construction - other.

The Corporation does not assign internal risk ratings to smaller balance, homogeneous loans, such as home equity, residential mortgage, construction loans to individuals secured by residential real estate, consumer and equipment lease financing. For these loans, the most relevant credit quality indicator is delinquency status. The migration of loans through the various delinquency status categories is a significant component of the ACL methodology for those loans, which bases the PD on this migration.

The following table summarizes designated internal risk rating categories by portfolio segment and loan class, by origination year, in the prior period:

		December 31, 2020
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2020		2019		2018		2017		2016		Prior		Cost Basis		Cost Basis		Total
Real estate - construction(1)
	Pass	$	185,883	$	229,097	$	217,604	$	81,086	$	37,976	$	110,470	$	38,026	$	—	$	900,142
	Special Mention	—		—		—		—		7,047		6,212		—		—		13,259
	Substandard or Lower	—		447		—		2,000		753		1,637		632		—		5,469
	Total real estate - construction	185,883		229,544		217,604		83,086		45,776		118,319		38,658		—		918,870
Real estate - construction(1)
	Current period gross charge-offs	—		—		—		—		—		(17)		—		—		(17)
	Current period recoveries	—		—		—		—		68		5,054		—		—		5,122
	Total net (charge-offs) recoveries	—		—		—		—		68		5,037		—		—		5,105
Commercial and industrial
	Pass	2,283,533		508,541		298,567		214,089		208,549		596,646		1,278,689		—		5,388,614
	Special Mention	6,633		23,834		29,167		10,945		11,506		25,960		45,994		—		154,039
	Substandard or Lower	3,221		5,947		8,434		11,251		11,192		23,852		64,278		—		128,175
	Total commercial and industrial	2,293,387		538,322		336,168		236,285		231,247		646,458		1,388,961		—		5,670,828
Commercial and industrial
	Current period gross charge-offs	—		(114)		(30)		(488)		(393)		(520)		(17,370)		—		(18,915)
	Current period recoveries	—		43		486		216		162		4,531		5,958		—		11,396
	Total net (charge-offs) recoveries	—		(71)		456		(272)		(231)		4,011		(11,412)		—		(7,519)
Real estate - commercial mortgage
	Pass	973,664		917,510		708,946		794,955		783,094		2,213,343		53,041		404		6,444,957
	Special Mention	13,639		40,874		84,047		80,705		89,112		167,424		2,364		—		478,165
	Substandard or Lower	1,238		6,681		6,247		39,027		22,605		103,007		2,225		940		181,970
	Total real estate - commercial mortgage	988,541		965,065		799,240		914,687		894,811		2,483,774		57,630		1,344		7,105,092
Real estate - commercial mortgage
	Current period gross charge-offs	(60)		(21)		(36)		(2,515)		(29)		(1,547)		(17)		—		(4,225)
	Current period recoveries	—		6		—		—		1		1,020		—		—		1,027
	Total net (charge-offs) recoveries	(60)		(15)		(36)		(2,515)		(28)		(527)		(17)		—		(3,198)
Total
	Pass	$	3,443,080	$	1,655,148	$	1,225,117	$	1,090,130	$	1,029,619	$	2,920,459	$	1,369,756	$	404	$	12,733,713
	Special Mention	20,272		64,708		113,214		91,650		107,665		199,596		48,358		—		645,463
	Substandard or Lower	4,459		13,075		14,681		52,278		34,550		128,496		67,135		940		315,614
	Total	$	3,467,811	$	1,732,931	$	1,353,012	$	1,234,058	$	1,171,834	$	3,248,551	$	1,485,249	$	1,344	$	13,694,790

(1) Excludes real estate - construction - other.

The following tables present the amortized cost of these loans based on payment activity, by origination year, for the periods shown:

		March 31, 2021
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2021		2020		2019		2018		2017		Prior		Cost Basis		Cost Basis		Total
Real estate - home equity
	Performing	$	4,491	$	29,767	$	8,140	$	12,312	$	9,997	$	119,037	$	948,645	$	4,845	$	1,137,234
	Nonperforming	—		—		88		23		264		2,597		9,545		207		12,724
	Total real estate - home equity	4,491		29,767		8,228		12,335		10,261		121,634		958,190		5,052		1,149,958
Real estate - home equity
	Current period gross charge-offs	—		—		—		—		—		—		(212)		—		(212)
	Current period recoveries	—		—		—		—		—		—		51		—		51
	Total net (charge-offs) recoveries	—		—		—		—		—		—		(161)		—		(161)
Real estate - residential mortgage
	Performing	358,906		1,240,446		513,892		181,509		292,014		630,996		—		—		3,217,763
	Nonperforming	—		3,927		1,654		3,450		2,945		24,319		—		—		36,295
	Total real estate - residential mortgage	358,906		1,244,373		515,546		184,959		294,959		655,315		—		—		3,254,058
Real estate - residential mortgage
	Current period gross charge-offs	—		—		(40)		(47)		—		(105)		—		—		(192)
	Current period recoveries	—		—		—		3		1		—		92		—		96
	Total net (charge-offs) recoveries	—		—		(40)		(44)		1		(105)		92		—		(96)
Consumer
	Performing	27,910		103,924		90,185		85,837		38,190		56,885		48,371		—		451,302
	Nonperforming	—		127		37		63		35		243		50		—		555
	Total consumer	27,910		104,051		90,222		85,900		38,225		57,128		48,421		—		451,857
Consumer
	Current period gross charge-offs	—		(95)		(94)		(111)		(79)		(229)		(27)		—		(635)
	Current period recoveries	—		33		5		11		19		321		—		—		389
	Total net (charge-offs) recoveries	—		(62)		(89)		(100)		(60)		92		(27)		—		(246)
Equipment lease financing and other
	Performing	25,663		68,641		51,804		36,350		22,506		13,054		—		—		218,018
	Nonperforming	—		—		—		—		15,724		26		—		—		15,750
	Total leasing and other	25,663		68,641		51,804		36,350		38,230		13,080		—		—		233,768
Equipment lease financing and other
	Current period gross charge-offs	—		(968)		—		—		—		—		—		—		(968)
	Current period recoveries	—		120		39		—		—		—		—		—		159
	Total net (charge-offs) recoveries	—		(848)		39		—		—		—		—		—		(809)
Construction - other
	Performing	17,458		97,829		16,172		4,755		—		16		—		—		136,230
	Nonperforming	—		—		364		—		176		—		—		—		540
	Total construction - other	17,458		97,829		16,536		4,755		176		16		—		—		136,770
Construction - other
	Current period gross charge-offs	—		—		—		—		—		—		—		—		—
	Current period recoveries	—		—		—		—		—		—		—		—		—
	Total net (charge-offs) recoveries	—		—		—		—		—		—		—		—		—
Total
	Performing	$	434,428	$	1,540,607	$	680,193	$	320,763	$	362,707	$	819,988	$	997,016	$	4,845	$	5,160,547
	Nonperforming	—		4,054		2,143		3,536		19,144		27,185		9,595		207		65,864
	Total	$	434,428	$	1,544,661	$	682,336	$	324,299	$	381,851	$	847,173	$	1,006,611	$	5,052	$	5,226,411

		December 31, 2020
		Term Loans Amortized Cost Basis by Origination Year												Revolving Loans		Revolving Loans converted to Term Loans
		(dollars in thousands)												Amortized		Amortized
		2020		2019		2018		2017		2016		Prior		Cost Basis		Cost Basis		Total
Real estate - home equity
	Performing	$	31,445	$	8,176	$	13,906	$	11,024	$	11,667	$	126,749	$	982,285	$	5,321	$	1,190,573
	Nonperforming	—		88		23		233		221		2,290		9,485		—		12,340
	Total real estate - home equity	31,445		8,264		13,929		11,257		11,888		129,039		991,770		5,321		1,202,913
Real estate - home equity
	Current period gross charge-offs	—		—		—		—		—		(34)		(1,159)		—		(1,193)
	Current period recoveries	—		—		—		—		—		138		366		—		504
	Total net (charge-offs) recoveries	—		—		—		—		—		104		(793)		—		(689)
Real estate - residential mortgage
	Performing	1,255,532		585,878		228,398		341,563		264,990		434,889		—		—		3,111,250
	Nonperforming	217		2,483		3,177		2,483		722		21,583		—		—		30,665
	Total real estate - residential mortgage	1,255,749		588,361		231,575		344,046		265,712		456,472		—		—		3,141,915
Real estate - residential mortgage
	Current period gross charge-offs	—		(68)		(101)		(190)		(7)		(254)		—		—		(620)
	Current period recoveries	—		68		16		1		1		405		—		—		491
	Total net (charge-offs) recoveries	—		—		(85)		(189)		(6)		151		—		—		(129)
Consumer
	Performing	114,399		98,587		95,072		43,334		25,804		36,086		52,698		42		466,022
	Nonperforming	168		19		124		141		114		150		34		—		750
	Total consumer	114,567		98,606		95,196		43,475		25,918		36,236		52,732		42		466,772
Consumer
	Current period gross charge-offs	(134)		(542)		(524)		(444)		(489)		(769)		(498)		—		(3,400)
	Current period recoveries	—		64		165		159		94		101		1,292		—		1,875
	Total net (charge-offs) recoveries	(134)		(478)		(359)		(285)		(395)		(668)		794		—		(1,525)
Equipment lease financing and other
	Performing	102,324		65,303		49,453		34,995		15,631		5,040		—		—		272,746
	Nonperforming	—		—		30		15,983		142		282		—		—		16,437
	Total leasing and other	102,324		65,303		49,483		50,978		15,773		5,322		—		—		289,183
Equipment lease financing and other
	Current period gross charge-offs	(606)		(1,581)		—		—		—		—		—		—		(2,187)
	Current period recoveries	185		349		21		18		11		21		—		—		605
	Total net (charge-offs) recoveries	(421)		(1,232)		21		18		11		21		—		—		(1,582)
Construction - other
	Performing	96,444		24,888		6,822		—		16		—		—		—		128,170
	Nonperforming	—		—		—		178		—		—		—		—		178
	Total construction - other	96,444		24,888		6,822		178		16		—		—		—		128,348
Construction - other
	Current period gross charge-offs	—		—		—		—		—		—		—		—		—
	Current period recoveries	—		—		—		—		—		—		—		—		—
	Total net (charge-offs) recoveries	—		—		—		—		—		—		—		—		—
Total
	Performing	$	1,600,144	$	782,832	$	393,651	$	430,916	$	318,108	$	602,764	$	1,034,983	$	5,363	$	5,168,761
	Nonperforming	385		2,590		3,354		19,018		1,199		24,305		9,519		—		60,370
	Total	$	1,600,529	$	785,422	$	397,005	$	449,934	$	319,307	$	627,069	$	1,044,502	$	5,363	$	5,229,131

Non-Performing Assets

The following table presents non-performing assets:

	March 31, 2021		December 31, 2020
	(in thousands)
Non-accrual loans	$	143,889	$	137,198
Loans 90 days or more past due and still accruing	8,559		9,929
Total non-performing loans	152,448		147,127
OREO (1)	3,664		4,178
Total non-performing assets	$	156,112	$	151,305

(1) Excludes $7.6 million and $8.1 million of residential mortgage properties for which formal foreclosure proceedings were in process as of March 31, 2021 and December 31, 2020, respectively.

Past due Loan Status and Non-Accrual Loans by Portfolio Segment

The following tables present the aging of the amortized cost basis of loans, by class segment:

	30-59		60-89		≥ 90 Days
	Days Past		Days Past		Past Due		Non-
	Due		Due		and Accruing		Accrual		Current		Total
	(in thousands)
March 31, 2021
Real estate – commercial mortgage	$	9,596	$	1,516	$	2,187	$	51,977	$	7,076,861	$	7,142,137
Commercial and industrial	1,718		1,894		219		31,652		5,640,231		5,675,714
Real estate – residential mortgage	8,485		933		2,750		33,401		3,208,489		3,254,058
Real estate – home equity	2,795		1,062		3,148		9,368		1,133,585		1,149,958
Real estate – construction	170		—		—		1,441		1,081,883		1,083,494
Consumer	1,224		491		255		301		449,586		451,857
Equipment lease financing and other	101		142		—		15,749		217,776		233,768
Total	$	24,089	$	6,038	$	8,559	$	143,889	$	18,808,411	$	18,990,986

	30-59 Days Past Due		60-89 Days Past Due		≥ 90 Days Past Due and Accruing		Non- accrual		Current		Total
	(in thousands)
December 31, 2020
Real estate – commercial mortgage	$	14,999	$	9,273	$	1,177	$	51,470	$	7,028,173	$	7,105,092
Commercial and industrial	11,285		1,068		616		31,993		5,625,866		5,670,828
Real estate – residential mortgage	22,281		7,675		4,687		26,107		3,081,165		3,141,915
Real estate – home equity	5,622		1,654		2,753		9,588		1,183,296		1,202,913
Real estate – construction	1,938		—		155		1,395		1,043,730		1,047,218
Consumer	3,036		501		417		332		462,486		466,772
Equipment lease financing and other	838		150		124		16,313		248,657		266,082
Total	$	59,999	$	20,321	$	9,929	$	137,198	$	18,673,373	$	18,900,820

Troubled Debt Restructurings on Financing Receivables

The following table presents TDRs, by class segment:

	March 31, 2021		December 31, 2020
	(in thousands)
Real estate - commercial mortgage	$	27,961	$	28,451
Commercial and industrial	7,041		6,982
Real estate - residential mortgage	18,214		18,602
Real estate - home equity	13,674		14,391
Real estate - construction	154		—
Consumer	5		—
Total accruing TDRs	67,049		68,426
Non-accrual TDRs (1)	44,986		35,755
Total TDRs	$	112,035	$	104,181

(1)Included in non-accrual loans in the preceding table detailing non-performing assets.

Loan Terms Modified Under Troubled Debt Restructurings

The following table presents TDRs, by class segment, for loans that were modified during the three months ended March 31, 2021 and 2020:

	Three months ended March 31
	2021			2020
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
	(dollars in thousands)
Commercial and industrial	4	$	1,894	1	$	74
Real estate - commercial mortgage	2	4,162		1	392
Real estate - residential mortgage	23	7,626		7	660
Real estate - home equity	5	148		8	577
Real estate - construction	1	154		—	—
Total	35	$	13,984	17	$	1,703

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Mortgage Servicing Rights (Tables)

3 Months Ended

Mar. 31, 2021

Transfers and Servicing [Abstract]

Summary of Changes in Mortgage Servicing Rights

The following table summarizes the changes in MSRs, which are included in other assets on the consolidated balance sheets:

	Three months ended March 31
	2021		2020
	(in thousands)
Amortized cost:
Balance at beginning of period	$	38,745	$	39,267
Originations of MSRs	2,811		1,478
Amortization	(3,753)		(1,891)
Balance at end of period	$	37,803	$	38,854
Valuation allowance:
Balance at beginning of period	$	(10,500)	$	—
Reduction (addition) to valuation allowance	6,100		(1,100)
Balance at end of period	$	(4,400)	$	(1,100)
Net MSRs at end of period	$	33,403	$	37,754

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Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Notional Amounts and Fair Values of Derivative Financial Instruments

The following table presents a summary of the notional amounts and fair values of derivative financial instruments:

	March 31, 2021				December 31, 2020
	Notional Amount		Asset (Liability) Fair Value		Notional Amount		Asset (Liability) Fair Value
	(in thousands)
Interest Rate Locks with Customers
Positive fair values	$	274,909	$	2,198	$	382,903	$	8,034
Negative fair values	40,007		(316)		3,154		(35)
Forward Commitments
Positive fair values	91,264		4,650		—		—
Negative fair values	—		—		292,262		(2,263)
Interest Rate Swaps with Customers
Positive fair values	3,169,658		179,934		3,834,062		330,951
Negative fair values	769,300		(9,721)		45,640		(2)
Interest Rate Swaps with Dealer Counterparties
Positive fair values	769,300		9,721		45,640		2
Negative fair values	3,169,658		(98,368)		3,834,062		(165,205)
Interest Rate Swaps used in Cash Flow Hedges
Positive fair values	—		305		—		—
Negative fair values	500,000		(492)		—		—
Foreign Exchange Contracts with Customers
Positive fair values	12,196		280		1,121		5
Negative fair values	552		(14)		5,963		(275)
Foreign Exchange Contracts with Correspondent Banks
Positive fair values	2,821		43		6,372		318
Negative fair values	12,213		(258)		1,422		(5)

Summary of Effect of Fair Value and Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income

The following table presents the effect of fair value and cash flow hedge accounting on accumulated other comprehensive income for the three months ended March 31, 2021:

	Amount of Loss Recognized in OCI on Derivative		Amount of Loss Recognized in OCI Included Component		Amount of Gain or (Loss) Recognized in OCI Excluded Component		Location of Gain or (Loss) Recognized from AOCI into Income	Amount of Gain Reclassified from AOCI into Income		Amount of Gain Reclassified from AOCI into Income Included Component		Amount of Gain or (Loss) Reclassified from AOCI into Income Excluded Component
	(in thousands)
Derivatives in Cash Flow Hedging Relationships:
Interest Rate Products	$	(2,065)	$	(2,065)	$	—	Interest Income	$	144	$	144	$	—

The following table presents the effect of fair value and cash flow hedge accounting on the consolidated statements of income for the three months ended March 31, 2021:

	Consolidated Statements of Income Classification
	Interest Income
Total amounts of income line items presented in the consolidated statements of income in which the effects of fair value or cash flow hedges are recorded	$	144
The effects of fair value and cash flow hedging:
Gain or (loss) on cash flow hedging relationships	—
Interest contracts:
Amount of gain reclassified from AOCI into income	144
Amount of gain or (loss) reclassified from AOCI into income as a result that a forecasted transaction is no longer probable of occurring	—
Amount of Gain Reclassified from AOCI into Income - Included Component	144
Amount of Gain or (Loss) Reclassified from AOCI into Income - Excluded Component	—

Summary of Fair Value Gains and Losses on Derivative Financial Instruments

The following table presents a summary of the fair value gains (losses) on derivative financial instruments:

	Consolidated Statements of Income Classification	Three months ended March 31
		2021		2020
		(in thousands)
Mortgage banking derivatives (1)	Mortgage banking income	$	796	$	1,040
Interest rate swaps	Other expense	(104)		72
Foreign exchange contracts	Other income	8		119
Net fair value gains on derivative financial instruments		$	700	$	1,231

(1) Includes interest rate locks with customers and forward commitments.

Summary of Corporation's Mortgage Loans Held for Sale

The following table presents a summary of mortgage loans held for sale and the impact of the fair value election on the consolidated financial statements as of the periods shown:

	March 31, 2021		December 31, 2020
	(in thousands)
Amortized cost (1)	$	33,801	$	80,662
Fair value	34,092		83,886

(1) Cost basis of mortgage loans held for sale represents the unpaid principal balance.

Summary of Offsetting Derivative Assets

The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets:

	Gross Amounts		Gross Amounts Not Offset
	Recognized		on the Consolidated
	on the		Balance Sheets
	Consolidated		Financial		Cash		Net
	Balance Sheets		Instruments(1)		Collateral (2)		Amount
	(in thousands)
March 31, 2021
Interest rate swap derivative assets	$	189,960	$	(11,779)	$	—	$	178,181
Foreign exchange derivative assets with correspondent banks	43		(43)		—		—
Total	$	190,003	$	(11,822)	$	—	$	178,181
Interest rate swap derivative liabilities	$	108,581	$	(11,779)	$	(96,802)	$	—
Foreign exchange derivative liabilities with correspondent banks	258		(43)		—		215
Total	$	108,839	$	(11,822)	$	(96,802)	$	215
December 31, 2020
Interest rate swap derivative assets	$	330,951	$	(2)	$	—	$	330,949
Foreign exchange derivative assets with correspondent banks	318		(5)		—		313
Total	$	331,269	$	(7)	$	—	$	331,262
Interest rate swap derivative liabilities	$	165,205	$	(2)	$	(165,203)	$	—
Foreign exchange derivative liabilities with correspondent banks	5		(5)		—		—
Total	$	165,210	$	(7)	$	(165,203)	$	—

(1)For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default.

(2)Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate swap transactions and foreign exchange contracts with financial institution counterparties. Interest rate swaps with customers are collateralized by the same collateral securing the underlying loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.

Summary of Offsetting Derivative Liabilities

The following table presents the Corporation's financial instruments that are eligible for offset, and the effects of offsetting, on the consolidated balance sheets:

	Gross Amounts		Gross Amounts Not Offset
	Recognized		on the Consolidated
	on the		Balance Sheets
	Consolidated		Financial		Cash		Net
	Balance Sheets		Instruments(1)		Collateral (2)		Amount
	(in thousands)
March 31, 2021
Interest rate swap derivative assets	$	189,960	$	(11,779)	$	—	$	178,181
Foreign exchange derivative assets with correspondent banks	43		(43)		—		—
Total	$	190,003	$	(11,822)	$	—	$	178,181
Interest rate swap derivative liabilities	$	108,581	$	(11,779)	$	(96,802)	$	—
Foreign exchange derivative liabilities with correspondent banks	258		(43)		—		215
Total	$	108,839	$	(11,822)	$	(96,802)	$	215
December 31, 2020
Interest rate swap derivative assets	$	330,951	$	(2)	$	—	$	330,949
Foreign exchange derivative assets with correspondent banks	318		(5)		—		313
Total	$	331,269	$	(7)	$	—	$	331,262
Interest rate swap derivative liabilities	$	165,205	$	(2)	$	(165,203)	$	—
Foreign exchange derivative liabilities with correspondent banks	5		(5)		—		—
Total	$	165,210	$	(7)	$	(165,203)	$	—

(1)For interest rate swap assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default.

(2)Amounts represent cash collateral received from the counterparty or posted by the Corporation on interest rate swap transactions and foreign exchange contracts with financial institution counterparties. Interest rate swaps with customers are collateralized by the same collateral securing the underlying loans to those borrowers. Cash and securities collateral amounts are included in the table only to the extent of the net derivative fair values.

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Tax Credit Investments (Tables)

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Summary Of Affordable Housing Tax Credit Investments And Other Credit Investments

The following table presents the balances of the Corporation's TCIs and related unfunded commitments:

		March 31,		December 31,
		2021		2020
Included in other assets:		(in thousands)
Affordable housing tax credit investment, net		$	145,888	$	152,203
Other tax credit investments, net		58,782		59,224
	Total TCIs, net	$	204,670	$	211,427
Included in other liabilities:
Unfunded affordable housing tax credit commitments		$	30,762	$	31,562
Other tax credit liabilities		49,491		49,491
	Total unfunded tax credit commitments and liabilities	$	80,253	$	81,053

The following table presents other information relating to the Corporation's TCIs:

		Three months ended
		March 31
		2021		2020
Components of income taxes:		(in thousands)
Affordable housing tax credits and other tax benefits		$	(6,488)	$	(7,194)
Other tax credit investment credits and tax benefits		(723)		(941)
Amortization of affordable housing investments, net of tax benefit		4,366		5,024
Deferred tax expense		160		208
	Total net reduction in income tax expense	$	(2,685)	$	(2,903)
Amortization of TCIs:
Affordable housing tax credits investment		$	986	$	1,022
Other tax credit investment amortization		545		428
	Total amortization of TCIs	$	1,531	$	1,450

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Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Changes in other comprehensive income

The following table presents changes in OCI:

	Before-Tax Amount		Tax Effect		Net of Tax Amount
Three months ended March 31, 2021	(in thousands)
Unrealized loss on securities	$	(51,751)	$	11,753	$	(39,999)
Reclassification adjustment for securities gains included in net income (1)	487		(110)		377
Amortization of net unrealized losses on AFS securities transferred to HTM (2)	2,312		(525)		1,787
Net unrealized loss on interest rate swaps used in cash flow hedges (3)	(2,209)		502		(1,707)
Amortization of net unrecognized pension and postretirement items (4)	370		(81)		289
Total OCI	$	(50,791)	$	11,538	$	(39,253)
Three months ended March 31, 2020
Unrealized gain on securities	$	22,380	$	(4,949)	$	17,431
Reclassification adjustment for securities gains included in net income (1)	(46)		10		(36)
Amortization of net unrealized losses on AFS securities transferred to HTM (2)	1,022		(227)		795
Amortization of net unrecognized pension and postretirement items (4)	328		(73)		255
Total OCI	$	23,684	$	(5,239)	$	18,445

(1)    Amounts reclassified out of AOCI. Before-tax amounts included in "Investment securities gains, net" on the Consolidated Statements of Income. See Note 3, "Investment Securities," for additional details.

(2)    Amounts reclassified out of AOCI. Before-tax amounts included as a reduction to "Interest Income" on the Consolidated Statements of Income.

(3)    Amounts reclassified out of AOCI. Before-tax amounts included in "Interest Income" on the Consolidated Statements of Income.

(4)    Amounts reclassified out of AOCI. Before-tax amounts included in "Salaries and employee benefits" on the Consolidated Statements of Income. See Note 12, "Employee Benefit Plans," for additional details.

Changes in each component of accumulated other comprehensive income

The following table presents changes in each component of accumulated other comprehensive income (loss), net of tax:

	Unrealized Gains (Losses) on Investment Securities		Net Unrealized (Loss) on Interest Rate Swaps used in Cash Flow Hedges		Unrecognized Pension and Postretirement Plan Income (Costs)		Total
	(in thousands)
Three months ended March 31, 2021
Balance at December 31, 2020	$	81,604	$	—	$	(16,513)	$	65,091
OCI before reclassifications	(39,999)		—		—		(39,999)
Amounts reclassified from AOCI	377		(1,707)		289		(1,042)
Amortization of net unrealized losses on AFS securities transferred to HTM	1,787		—		—		1,787
Balance at March 31, 2021	$	43,769	$	(1,707)	$	(16,224)	$	25,838
Three months ended March 31, 2020
Balance at December 31, 2019	$	14,864	$	—	$	(15,001)	$	(137)
OCI before reclassifications	17,431		—		—		17,431
Amounts reclassified from AOCI	(36)		—		255		219
Amortization of net unrealized losses on AFS securities transferred to HTM	795		—		—		795
Balance at March 31, 2020	$	33,054	$	—	$	(14,746)	$	18,308

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables present assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets:

	March 31, 2021
	Level 1		Level 2		Level 3		Total
	(in thousands)
Loans held for sale	$	—	$	34,092	$	—	$	34,092
Available for sale investment securities:
State and municipal securities	—		994,760		—		994,760
Corporate debt securities	—		359,371		—		359,371
Collateralized mortgage obligations	—		399,881		—		399,881
Residential mortgage-backed securities	—		255,364		—		255,364
Commercial mortgage-backed securities	—		673,017		—		673,017
Auction rate securities	—		—		76,204		76,204
Total available for sale investment securities	—		2,682,393		76,204		2,758,597
Other assets:
Investments held in Rabbi Trust	25,374		—		—		25,374
Derivative assets	323		196,808		—		197,131
Total assets	$	25,697	$	2,913,293	$	76,204	$	3,015,194
Other liabilities:
Deferred compensation liabilities	$	25,374	$	—	$	—	$	25,374
Derivative liabilities	272		108,897		—		109,169
Total liabilities	$	25,646	$	108,897	$	—	$	134,543

	December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in thousands)
Loans held for sale	$	—	$	83,886	$	—	$	83,886
Available for sale investment securities:
State and municipal securities	—		952,613		—		952,613
Corporate debt securities	—		367,145		—		367,145
Collateralized mortgage obligations	—		503,766		—		503,766
Residential mortgage-backed securities	—		377,998		—		377,998
Commercial mortgage-backed securities	—		762,415		—		762,415
Auction rate securities	—		—		98,206		98,206
Total available for sale investment securities	—		2,963,937		98,206		3,062,143
Other assets:
Investments held in Rabbi Trust	24,383		—		—		24,383
Derivative assets	323		338,987		—		339,310
Total assets	$	24,706	$	3,386,810	$	98,206	$	3,509,722
Other liabilities:
Deferred compensation liabilities	$	24,383	$	—	$	—	$	24,383
Derivative liabilities	280		167,505		—		167,785
Total liabilities	$	24,663	$	167,505	$	—	$	192,168

Schedule of Changes in Assets and Liabilities Measured at Fair Value on a Recurring Basis using Level 3 Inputs

The following table presents the changes in the Corporation’s available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3):

		Single-issuer Trust Preferred Securities		ARCs
Three months ended March 31, 2021	(in thousands)
Balance at December 31, 2020		$	—	$	98,206
Sales		—		(24,619)
Unrealized adjustment to fair value (1)		—		2,617
Balance at March 31, 2021		$	—	$	76,204
Three months ended March 31, 2020
Balance at December 31, 2019		$	2,400	$	101,926
Unrealized adjustment to fair value (1)		(242)		(8,260)
Discount accretion		2		—
Balance at March 31, 2020		$	2,160	$	93,666

(1)Pooled trust preferred securities, single-issuer trust preferred securities and ARCs are classified as available for sale investment securities; as such, the unrealized adjustment to fair value was recorded as an unrealized holding gain (loss) and included as a component of "available for sale at estimated fair value" on the consolidated balance sheets.

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis

The following table presents Level 3 financial assets measured at fair value on a nonrecurring basis:

	March 31, 2021		December 31, 2020
	(in thousands)
Loans, net	$	122,962	$	116,584
OREO	3,664		4,178
MSRs (1)	33,403		28,245
Total assets	$	160,029	$	149,007

Details of Book Value and Fair Value of Financial Instruments

The following tables present the carrying amounts and estimated fair values of the Corporation’s financial instruments for the current period. A general description of the methods and assumptions used to estimate such fair values follows:

	March 31, 2021
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents	$	1,661,876	$	1,661,876	$	—	$	—	$	1,661,876
FRB and FHLB stock	66,209		—		66,209		—		66,209
Loans held for sale	34,092		—		34,092		—		34,092
AFS securities	2,758,597		—		2,682,393		76,204		2,758,597
HTM securities	853,413		—		843,743		—		843,743
Net Loans	18,725,000		—		—		18,354,532		18,354,532
Accrued interest receivable	65,649		65,649		—		—		65,649
Other assets	510,534		276,659		196,808		37,067		510,534
FINANCIAL LIABILITIES
Demand and savings deposits	$	19,250,538	$	19,250,538	$	—	$	—	$	19,250,538
Brokered deposits	309,873		289,873		21,001		—		310,874
Time deposits	2,073,427		—		2,087,663		—		2,087,663
Short-term borrowings	520,989		520,989		—		—		520,989
Accrued interest payable	5,618		5,618		—		—		5,618
Long-term borrowings	626,407		—		607,577		—		607,577
Other liabilities	297,069		173,899		108,897		14,273		297,069

	December 31, 2020
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents	$	1,847,832	$	1,847,832	$	—	$	—	$	1,847,832
FRB and FHLB stock	92,129		—		92,129		—		92,129
Loans held for sale	83,886		—		83,886		—		83,886
AFS securities	3,062,143		—		2,963,937		98,206		3,062,143
HTM securities	278,281		—		296,857		—		296,857
Net Loans	18,623,253		—		—		18,354,532		18,354,532
Accrued interest receivable	72,942		72,942		—		—		72,942
Other assets	650,425		279,015		338,987		32,423		650,425
FINANCIAL LIABILITIES
Demand and savings deposits	$	18,279,358	$	18,279,358	$	—	$	—	$	18,279,358
Brokered deposits	335,185		295,185		41,206		—		336,391
Time deposits	2,224,665		—		2,246,457		—		2,246,457
Short-term borrowings	630,066		630,066		—		—		630,066
Accrued interest payable	10,365		10,365		—		—		10,365
Long-term borrowings	1,296,263		—		1,332,041		—		1,332,041
Other liabilities	338,747		156,869		167,505		14,373		338,747

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Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Reconciliation of Weighted Average Common Shares Outstanding

A reconciliation of weighted average shares outstanding used to calculate basic and diluted net income per share follows (in thousands, except per share data):

	Three months ended March 31
	2021		2020
Weighted average shares outstanding (basic)	162,441		163,475
Impact of common stock equivalents	1,296		942
Weighted average shares outstanding (diluted)	163,737		164,417
Per share:
Basic	$	0.43	$	0.16
Diluted	0.43		0.16

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of Compensation Expense and Related Tax Benefits

The following table presents compensation expense and the related tax benefits for equity awards recognized in the consolidated statements of income:

	Three months ended March 31
	2021		2020
	(in thousands)
Compensation expense	$	1,902	$	1,619
Tax benefit	(414)		(344)
Stock-based compensation expense, net of tax benefit	$	1,488	$	1,275

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Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

The net periodic pension cost for the Corporation’s Defined Benefit Pension Plan ("Pension Plan") consisted of the following components:

	Three months ended March 31
	2021		2020
	(in thousands)
Interest cost	$	561	$	681
Expected return on plan assets	(1,011)		(982)
Net amortization and deferral	504		465
Net periodic pension cost	$	54	$	164

The components of the net benefit for the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components:

	Three months ended March 31
	2021		2020
	(in thousands)
Interest cost	$	8	$	11
Net accretion and deferral	(134)		(137)
Net periodic benefit	$	(126)	$	(126)

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

Summary of Outstanding Commitments to Extend Credit and Letters of Credit

The following table presents the Corporation's commitments to extend credit and letters of credit:

	March 31, 2021		December 31, 2020
	(in thousands)
Commitments to extend credit	$	9,018,523	$	8,651,055
Standby letters of credit	295,516		298,750
Commercial letters of credit	57,917		56,229

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Basis of Presentation Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in ACL	$ 280,259	$ 291,940	$ 257,471		$ 166,209
Change in retained earnings	(1,168,491)	(1,120,781)
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in ACL		0			$ 58,349
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in ACL				$ 58,300
Change in retained earnings				43,800
Increase in deferred tax assets				12,400
Residential Mortgage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in ACL for certain OBS credit exposure	$ 1,100	$ 1,100
Residential Mortgage | Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in ACL for certain OBS credit exposure				(2,100)
Residential Mortgage | Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in ACL for certain OBS credit exposure				$ (2,100)

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Restrictions on Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Abstract]
Collateral	$ 243.6	$ 408.1

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Investment Securities Schedule of Amortized Cost and Fair Values of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Amortized Cost	$ 2,693,919
Gross Unrealized Gains	79,411
Gross Unrealized Losses	(14,733)
Estimated Fair Value	2,758,597	$ 3,062,143
Amortized Cost, Held to Maturity	853,413	278,281
Gross Unrealized Gains, Held to Maturity	16,303
Gross Unrealized Losses, Held to Maturity	(25,973)
HTM securities	843,743
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	953,601
Gross Unrealized Gains	42,412
Gross Unrealized Losses	(1,253)
Estimated Fair Value	994,760
Amortized Cost, Held to Maturity	376,200
Amortized Cost		891,327
Gross Unrealized Gains		61,286
Gross Unrealized Losses		0
Estimated Fair Value		952,613
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	348,162
Gross Unrealized Gains	11,970
Gross Unrealized Losses	(761)
Estimated Fair Value	359,371
Amortized Cost		348,391
Gross Unrealized Gains		19,445
Gross Unrealized Losses		(691)
Estimated Fair Value		367,145
Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	390,253
Gross Unrealized Gains	10,633
Gross Unrealized Losses	(1,005)
Estimated Fair Value	399,881
Amortized Cost		491,321
Gross Unrealized Gains		12,560
Gross Unrealized Losses		(115)
Estimated Fair Value		503,766
Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	257,409
Gross Unrealized Gains	1,941
Gross Unrealized Losses	(3,986)
Estimated Fair Value	255,364
Amortized Cost, Held to Maturity	467,461	278,281
Gross Unrealized Gains, Held to Maturity	16,303	18,576
Gross Unrealized Losses, Held to Maturity	(8,025)	0
HTM securities	475,739	296,857
Amortized Cost		373,779
Gross Unrealized Gains		4,246
Gross Unrealized Losses		(27)
Estimated Fair Value		377,998
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	668,144
Gross Unrealized Gains	12,455
Gross Unrealized Losses	(7,582)
Estimated Fair Value	673,017
Amortized Cost, Held to Maturity	385,952
Gross Unrealized Gains, Held to Maturity	0
Gross Unrealized Losses, Held to Maturity	(17,948)
HTM securities	368,004
Amortized Cost		741,172
Gross Unrealized Gains		22,384
Gross Unrealized Losses		(1,141)
Estimated Fair Value		762,415
Auction Rate Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	76,350
Gross Unrealized Gains	0
Gross Unrealized Losses	(146)
Estimated Fair Value	$ 76,204
Amortized Cost		101,510
Gross Unrealized Gains		0
Gross Unrealized Losses		(3,304)
Estimated Fair Value		98,206
Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost		2,947,500
Gross Unrealized Gains		119,921
Gross Unrealized Losses		(5,278)
Estimated Fair Value		$ 3,062,143

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Investment Securities Schedule of Amortized Cost and Fair Values of Debt Securities by Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized Cost
Due in one year or less	$ 13,107
Due from one year to five years	37,176
Due from five years to ten years	343,642
Due after ten years	984,188
Amortized cost, before securities without debt maturities	1,378,113
Amortized Cost	2,693,919
Estimated Fair Value
Due in one year or less	13,171
Due from one year to five years	38,417
Due from five years to ten years	355,683
Due after ten years	1,023,064
Available for sale securities, debt maturities, before securities without single maturities	1,430,335
Estimated Fair Value	2,758,597	$ 3,062,143
Amortized Cost
Due in one year or less	0
Due from one year to five years	0
Due from five years to ten years	0
Due after ten years	0
Debt securities, held-to-maturity, maturity, allocated and single maturity date, amortized cost, total	0
Amortized Cost, Held to Maturity	853,413	278,281
Estimated Fair Value
Due in one year or less	0
Due from one year to five years	0
Due from five years to ten years	0
Due after ten years	0
Debt securities, held-to-maturity, maturity, Allocated and single maturity date, fair value	0
Estimated Fair Value, Held to Maturity	843,743
Collateralized Mortgage Obligations [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	390,253
Amortized Cost	390,253
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	399,881
Estimated Fair Value	399,881
Amortized Cost
Debt securities, held-to-maturity, maturity, without single maturity date, amortized cost	0
Estimated Fair Value
Debt securities, held-to-maturity, maturity, without single maturity date, fair value	0
Commercial Mortgage Backed Securities [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	668,144
Amortized Cost	668,144
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	673,017
Estimated Fair Value	673,017
Amortized Cost
Debt securities, held-to-maturity, maturity, without single maturity date, amortized cost	385,952
Amortized Cost, Held to Maturity	385,952
Estimated Fair Value
Debt securities, held-to-maturity, maturity, without single maturity date, fair value	368,004
Estimated Fair Value, Held to Maturity	368,004
Mortgage-Backed Securities [Member]
Amortized Cost
Available-for-sale securities, amortized cost without single maturity date	257,409
Amortized Cost	257,409
Estimated Fair Value
Available-for-sale securities, debt maturities, without single maturity date, fair value	255,364
Estimated Fair Value	255,364
Amortized Cost
Debt securities, held-to-maturity, maturity, without single maturity date, amortized cost	467,461
Amortized Cost, Held to Maturity	467,461	278,281
Estimated Fair Value
Debt securities, held-to-maturity, maturity, without single maturity date, fair value	475,739
Estimated Fair Value, Held to Maturity	$ 475,739	$ 296,857

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Investment Securities Summary of Gains and Losses from Equity and Debt Securities, and Losses from Other-than-Temporary Impairment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Debt securities, Gross Realized Gains	$ 34,016	$ 117
Debt securities, Gross Realized Losses	(541)	(71)
Debt securities, Net Gains (Losses)	$ 33,475	$ 46

XML

Investment Securities Gross Unrealized Losses and Fair Values of Investments by Category and Length of Time in a Continuous Unrealized Loss Position (Details) $ in Thousands	Mar. 31, 2021 USD ($) Security	Dec. 31, 2020 USD ($) Security
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	48	22
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 542,485	$ 266,636
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (14,408)	$ (1,660)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	120	163
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 91,532	$ 105,077
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(325)	(3,618)
Debt Securities, Available-for-sale, Unrealized Loss Position	634,017	371,713
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (14,733)	$ (5,278)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	33
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 573,076
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (25,973)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	573,076
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (25,973)
State and Municipal Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	21
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 88,141
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,253)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Debt Securities, Available-for-sale, Unrealized Loss Position	88,141
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (1,253)
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	7	9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 41,956	$ 44,528
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (582)	$ (377)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	2	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 15,328	$ 6,871
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(179)	(314)
Debt Securities, Available-for-sale, Unrealized Loss Position	57,284	51,399
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (761)	$ (691)
Collateralized Mortgage Obligations [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	2	3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 55,305	$ 57,601
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,005)	$ (115)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	55,305	57,601
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (1,005)	$ (115)
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	8	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 173,908	$ 20,124
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (3,986)	$ (27)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	173,908	20,124
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (3,986)	$ (27)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	12
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 205,072
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (8,025)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	205,072
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (8,025)
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	10	9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 183,175	$ 144,383
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (7,582)	$ (1,141)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	183,175	144,383
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (7,582)	$ (1,141)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	21
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 368,004
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (17,948)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	368,004
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (17,948)
Auction Rate Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	118	162
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 76,204	$ 98,206
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(146)	(3,304)
Debt Securities, Available-for-sale, Unrealized Loss Position	76,204	98,206
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (146)	$ (3,304)

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Investment Securities Summary of Amortized Cost and Fair Values of Corporate Debt Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,693,919
Estimated Fair Value	2,758,597	$ 3,062,143
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	348,162
Estimated Fair Value	$ 359,371

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Investment Securities Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Schedule of Investments [Line Items]
Amortized cost	$ 2,693,919
Available-for-sale Securities, Fair Value Disclosure	2,758,597		$ 3,062,143
HTM, at amortized cost	853,413		278,281
HTM securities	843,743
Proceeds from sales of AFS securities	59,342	$ 59,894
Other securities losses	(33,475)	(46)
Debt extinguishment costs	32,200
Interest income	184,936	$ 199,378
Debt extinguishment costs	841
Unrealized Gain (Loss) on Securities	(400)
Visa
Schedule of Investments [Line Items]
Gain on sale of shares	34,000
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost	257,409
Available-for-sale Securities, Fair Value Disclosure	255,364
HTM, at amortized cost	467,461		278,281
HTM securities	475,739		296,857
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized cost	953,601
Available-for-sale Securities, Fair Value Disclosure	994,760
HTM, at amortized cost	376,200
Auction Rate Securities [Member]
Schedule of Investments [Line Items]
Amortized cost	76,350
Available-for-sale Securities, Fair Value Disclosure	76,204
Proceeds from sales of AFS securities	24,600
Collateral Pledged [Member]
Schedule of Investments [Line Items]
Securities pledged as collateral	$ 1,100,000		$ 520,500

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Loans and Allowance for Credit Losses Summary Of Gross Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 19,011,521	$ 18,923,921
Unearned income	(20,535)	(23,101)
Net Loans	18,990,986	18,900,820
Real estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	7,142,137	7,105,092
Net Loans	7,142,137	7,105,092
Commercial and industrial (1)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	5,675,714	5,670,828
Net Loans	5,675,714	5,670,828
Commercial and industrial (1) | PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,700,000	1,600,000
Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,254,058	3,141,915
Net Loans	3,254,058	3,141,915
Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,149,958	1,202,913
Net Loans	1,149,958	1,202,913
Real-estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,083,494	1,047,218
Net Loans	1,083,494	1,047,218
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	451,857	466,772
Net Loans	451,857	466,772
Equipment lease financing and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	252,930	284,377
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 1,373	$ 4,806

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Loans and Allowance for Credit Losses Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
ACL - loans	$ 265,986	$ 277,567
ACL - OBS credit exposure	14,273	14,373
Total ACL	$ 280,259	$ 291,940	$ 257,471	$ 166,209

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Loans and Allowance for Credit Losses Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 291,940	$ 166,209	$ 166,209
Loans charged off	8,202	14,003
Recoveries of loans previously charged off	2,021	2,887
Total net (charge-offs) recoveries	(6,181)	(11,116)
Provision for credit losses	(5,500)	44,029
Ending balance	280,259	257,471	291,940
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	58,349	58,349
Ending balance			$ 0
Off-Balance Sheet
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses	$ 100	$ (3,800)

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Loans and Allowance for Credit Losses Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 291,940	$ 166,209	$ 166,209
Loans charged off	8,202	14,003
Recoveries of loans previously charged off	2,021	2,887
Total net (charge-offs) recoveries	(6,181)	(11,116)
Provision for credit losses	(5,500)	44,029
Ending balance	280,259	257,471	291,940
Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	0	58,349	58,349
Ending balance			0
Loans - Excluding OBS Credit Exposure [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	277,567	163,622	163,622
Loans charged off	8,202	14,003
Recoveries of loans previously charged off	2,021	2,887
Total net (charge-offs) recoveries	(6,181)	(11,116)
Provision for credit losses	(5,400)	40,279
Ending balance	265,986	238,508	277,567
Loans - Excluding OBS Credit Exposure [Member] | Real estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	103,425	45,610	45,610
Loans charged off	1,837	855
Recoveries of loans previously charged off	174	244
Total net (charge-offs) recoveries	(1,663)	(611)
Provision for credit losses	(786)	15,959
Ending balance	100,976	90,319	103,425
Loans - Excluding OBS Credit Exposure [Member] | Commercial and industrial (1)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	74,771	68,602	68,602
Loans charged off	4,319	10,899
Recoveries of loans previously charged off	769	1,734
Total net (charge-offs) recoveries	(3,550)	(9,165)
Provision for credit losses	(27)	22,745
Ending balance	71,194	63,606	74,771
Loans - Excluding OBS Credit Exposure [Member] | Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	14,232	17,744	17,744
Loans charged off	212	316
Recoveries of loans previously charged off	51	646
Total net (charge-offs) recoveries	(161)	330
Provision for credit losses	(341)	(2,756)
Ending balance	13,730	15,253	14,232
Loans - Excluding OBS Credit Exposure [Member] | Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	51,995	19,771	19,771
Loans charged off	192	187
Recoveries of loans previously charged off	95	85
Total net (charge-offs) recoveries	(97)	(102)
Provision for credit losses	(1,903)	1,523
Ending balance	49,995	42,427	51,995
Loans - Excluding OBS Credit Exposure [Member] | Real-estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	15,608	4,443	4,443
Loans charged off	39	0
Recoveries of loans previously charged off	384	70
Total net (charge-offs) recoveries	345	70
Provision for credit losses	(874)	(130)
Ending balance	15,079	8,398	15,608
Loans - Excluding OBS Credit Exposure [Member] | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	10,905	3,762	3,762
Loans charged off	635	1,213
Recoveries of loans previously charged off	389	0
Total net (charge-offs) recoveries	(246)	(1,213)
Provision for credit losses	(1,247)	1,347
Ending balance	9,412	9,865	10,905
Loans - Excluding OBS Credit Exposure [Member] | Equipment lease financing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	6,633	3,690	3,690
Loans charged off	968	533
Recoveries of loans previously charged off	159	108
Total net (charge-offs) recoveries	(809)	(425)
Provision for credit losses	(222)	1,591
Ending balance	$ 5,602	8,640	6,633
Loans - Excluding OBS Credit Exposure [Member] | Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance		45,723	45,723
Loans - Excluding OBS Credit Exposure [Member] | Cumulative Effect, Period of Adoption, Adjustment | Real estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance		29,361	29,361
Loans - Excluding OBS Credit Exposure [Member] | Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial (1)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance		(18,576)	(18,576)
Loans - Excluding OBS Credit Exposure [Member] | Cumulative Effect, Period of Adoption, Adjustment | Real-estate - home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance		(65)	(65)
Loans - Excluding OBS Credit Exposure [Member] | Cumulative Effect, Period of Adoption, Adjustment | Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance		21,235	21,235
Loans - Excluding OBS Credit Exposure [Member] | Cumulative Effect, Period of Adoption, Adjustment | Real-estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance		4,015	4,015
Loans - Excluding OBS Credit Exposure [Member] | Cumulative Effect, Period of Adoption, Adjustment | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance		5,969	5,969
Loans - Excluding OBS Credit Exposure [Member] | Cumulative Effect, Period of Adoption, Adjustment | Equipment lease financing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance		$ 3,784	$ 3,784

XML

Loans and Allowance for Credit Losses Total Impaired Loans by Class Segments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	$ 81,997	$ 68,603
Unpaid principal balance, with no related allowance	61,892	68,595
Unpaid Principal Balance	143,889	137,198
Real estate - commercial mortgage
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	21,107	19,909
Unpaid principal balance, with no related allowance	30,870	31,561
Unpaid Principal Balance	51,977	51,470
Commercial
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	13,012	13,937
Unpaid principal balance, with no related allowance	18,640	18,056
Unpaid Principal Balance	31,652	31,993
Real estate - residential mortgage
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	31,203	24,590
Unpaid principal balance, with no related allowance	2,198	1,517
Unpaid Principal Balance	33,401	26,107
Real-estate - home equity
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	9,368	9,398
Unpaid principal balance, with no related allowance	0	190
Unpaid Principal Balance	9,368	9,588
Construction
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	544	437
Unpaid principal balance, with no related allowance	897	958
Unpaid Principal Balance	1,441	1,395
Consumer
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	301	332
Unpaid principal balance, with no related allowance	0	0
Unpaid Principal Balance	301	332
Equipment lease financing, other and overdrafts
Impaired Financing Receivables [Line Items]
Unpaid principal balance, with related allowance	6,462	0
Unpaid principal balance, with no related allowance	9,287	16,313
Unpaid Principal Balance	$ 15,749	$ 16,313

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Loans and Allowance for Credit Losses Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Total
Current period gross charge-offs	$ (8,202)	$ (14,003)
Current period recoveries	2,021	2,887
Total net (charge-offs) recoveries	6,181	$ 11,116
Portfolio Segment and Loan Class [Member]
2021
Total	1,101,369		$ 3,467,811
2020
Total	2,888,374		1,732,931
2019
Total	1,691,737		1,353,012
2018
Total	1,313,252		1,234,058
2017
Total	1,194,899		1,171,834
Prior
Total	4,174,934		3,248,551
Revolving Loans Amortized Cost Basis
Total	1,399,689		1,485,249
Total
Total	13,764,575		13,694,790
Portfolio Segment and Loan Class [Member] | Pass
2021
Total	1,101,116		3,443,080
2020
Total	2,852,081		1,655,148
2019
Total	1,608,830		1,225,117
2018
Total	1,179,939		1,090,130
2017
Total	1,049,995		1,029,619
Prior
Total	3,669,729		2,920,459
Revolving Loans Amortized Cost Basis
Total	1,290,318		1,369,756
Total
Total	12,752,329		12,733,713
Portfolio Segment and Loan Class [Member] | Special Mention
2021
Total	253		20,272
2020
Total	32,418		64,708
2019
Total	51,578		113,214
2018
Total	109,137		91,650
2017
Total	85,830		107,665
Prior
Total	292,459		199,596
Revolving Loans Amortized Cost Basis
Total	51,345		48,358
Total
Total	623,020		645,463
Portfolio Segment and Loan Class [Member] | Substandard or Lower
2021
Total	0		4,459
2020
Total	3,875		13,075
2019
Total	31,329		14,681
2018
Total	24,176		52,278
2017
Total	59,074		34,550
Prior
Total	212,746		128,496
Revolving Loans Amortized Cost Basis
Total	58,026		67,135
Total
Total	389,226		315,614
Portfolio Segment and Loan Class [Member] | Real estate - construction(1)
2021
Total	14,725		185,883
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2020
Total	233,770		229,544
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2019
Total	201,594		217,604
Current period gross charge-offs	(39)		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	(39)		0
2018
Total	218,467		83,086
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2017
Total	82,662		45,776
Current period gross charge-offs	0		0
Current period recoveries	0		68
Total net (charge-offs) recoveries	0		68
Prior
Total	159,054		118,319
Current period gross charge-offs	0		(17)
Current period recoveries	384		5,054
Total net (charge-offs) recoveries	384		5,037
Revolving Loans Amortized Cost Basis
Total	36,452		38,658
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Total
Total	946,724		918,870
Current period gross charge-offs	(39)		(17)
Current period recoveries	384		5,122
Total net (charge-offs) recoveries	(345)		(5,105)
Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Pass
2021
Total	14,615		185,883
2020
Total	233,770		229,097
2019
Total	201,440		217,604
2018
Total	218,467		81,086
2017
Total	80,686		37,976
Prior
Total	142,339		110,470
Revolving Loans Amortized Cost Basis
Total	36,046		38,026
Total
Total	927,363		900,142
Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Special Mention
2021
Total	110		0
2020
Total	0		0
2019
Total	0		0
2018
Total	0		0
2017
Total	0		7,047
Prior
Total	13,195		6,212
Revolving Loans Amortized Cost Basis
Total	0		0
Total
Total	13,305		13,259
Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Substandard or Lower
2021
Total	0		0
2020
Total	0		447
2019
Total	154		0
2018
Total	0		2,000
2017
Total	1,976		753
Prior
Total	3,520		1,637
Revolving Loans Amortized Cost Basis
Total	406		632
Total
Total	6,056		5,469
Portfolio Segment and Loan Class [Member] | Commercial and industrial (1)
2021
Total	885,759		2,293,387
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2020
Total	1,636,518		538,322
Current period gross charge-offs	0		(114)
Current period recoveries	0		43
Total net (charge-offs) recoveries	0		(71)
2019
Total	509,154		336,168
Current period gross charge-offs	(613)		(30)
Current period recoveries	37		486
Total net (charge-offs) recoveries	(576)		456
2018
Total	320,628		236,285
Current period gross charge-offs	(2,871)		(488)
Current period recoveries	126		216
Total net (charge-offs) recoveries	(2,745)		(272)
2017
Total	222,961		231,247
Current period gross charge-offs	(60)		(393)
Current period recoveries	36		162
Total net (charge-offs) recoveries	(24)		(231)
Prior
Total	792,647		646,458
Current period gross charge-offs	(775)		(520)
Current period recoveries	570		4,531
Total net (charge-offs) recoveries	(205)		4,011
Revolving Loans Amortized Cost Basis
Total	1,308,047		1,388,961
Current period gross charge-offs	0		(17,370)
Current period recoveries	0		5,958
Total net (charge-offs) recoveries	0		(11,412)
Total
Total	5,675,714		5,670,828
Current period gross charge-offs	(4,319)		(18,915)
Current period recoveries	769		11,396
Total net (charge-offs) recoveries	3,550		7,519
Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Pass
2021
Total	885,616		2,283,533
2020
Total	1,624,535		508,541
2019
Total	481,038		298,567
2018
Total	290,788		214,089
2017
Total	201,910		208,549
Prior
Total	726,981		596,646
Revolving Loans Amortized Cost Basis
Total	1,205,065		1,278,689
Total
Total	5,415,933		5,388,614
Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Special Mention
2021
Total	143		6,633
2020
Total	9,136		23,834
2019
Total	20,949		29,167
2018
Total	16,337		10,945
2017
Total	10,413		11,506
Prior
Total	30,861		25,960
Revolving Loans Amortized Cost Basis
Total	48,939		45,994
Total
Total	136,778		154,039
Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Substandard or Lower
2021
Total	0		3,221
2020
Total	2,847		5,947
2019
Total	7,167		8,434
2018
Total	13,503		11,251
2017
Total	10,638		11,192
Prior
Total	34,805		23,852
Revolving Loans Amortized Cost Basis
Total	54,043		64,278
Total
Total	123,003		128,175
Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage
2021
Total	200,885		988,541
Current period gross charge-offs	0		(60)
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		(60)
2020
Total	1,018,086		965,065
Current period gross charge-offs	0		(21)
Current period recoveries	0		6
Total net (charge-offs) recoveries	0		(15)
2019
Total	980,989		799,240
Current period gross charge-offs	0		(36)
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		(36)
2018
Total	774,157		914,687
Current period gross charge-offs	0		(2,515)
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		(2,515)
2017
Total	889,276		894,811
Current period gross charge-offs	(1,719)		(29)
Current period recoveries	0		1
Total net (charge-offs) recoveries	(1,719)		(28)
Prior
Total	3,223,233		2,483,774
Current period gross charge-offs	(118)		(1,547)
Current period recoveries	174		1,020
Total net (charge-offs) recoveries	56		(527)
Revolving Loans Amortized Cost Basis
Total	55,190		57,630
Current period gross charge-offs	0		(17)
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		(17)
Total
Total	7,142,137		7,105,092
Current period gross charge-offs	(1,837)		(4,225)
Current period recoveries	174		1,027
Total net (charge-offs) recoveries	1,663		3,198
Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Pass
2021
Total	200,885		973,664
2020
Total	993,776		917,510
2019
Total	926,352		708,946
2018
Total	670,684		794,955
2017
Total	767,399		783,094
Prior
Total	2,800,409		2,213,343
Revolving Loans Amortized Cost Basis
Total	49,207		53,041
Total
Total	6,409,033		6,444,957
Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Special Mention
2021
Total	0		13,639
2020
Total	23,282		40,874
2019
Total	30,629		84,047
2018
Total	92,800		80,705
2017
Total	75,417		89,112
Prior
Total	248,403		167,424
Revolving Loans Amortized Cost Basis
Total	2,406		2,364
Total
Total	472,937		478,165
Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Substandard or Lower
2021
Total	0		1,238
2020
Total	1,028		6,681
2019
Total	24,008		6,247
2018
Total	10,673		39,027
2017
Total	46,460		22,605
Prior
Total	174,421		103,007
Revolving Loans Amortized Cost Basis
Total	3,577		2,225
Total
Total	260,167		181,970
Payment Activity, Aging Status [Member]
2021
Total	434,428		1,600,529
2020
Total	1,544,661		785,422
2019
Total	682,336		397,005
2018
Total	324,299		449,934
2017
Total	381,851		319,307
Prior
Total	847,173		627,069
Revolving Loans Amortized Cost Basis
Total	1,006,611		1,044,502
Total
Total	5,226,411		5,229,131
Payment Activity, Aging Status [Member] | Performing
2021
Total	434,428		1,600,144
2020
Total	1,540,607		782,832
2019
Total	680,193		393,651
2018
Total	320,763		430,916
2017
Total	362,707		318,108
Prior
Total	819,988		602,764
Revolving Loans Amortized Cost Basis
Total	997,016		1,034,983
Total
Total	5,160,547		5,168,761
Payment Activity, Aging Status [Member] | Nonperforming Financial Instruments [Member]
2021
Total	0		385
2020
Total	4,054		2,590
2019
Total	2,143		3,354
2018
Total	3,536		19,018
2017
Total	19,144		1,199
Prior
Total	27,185		24,305
Revolving Loans Amortized Cost Basis
Total	9,595		9,519
Total
Total	65,864		60,370
Payment Activity, Aging Status [Member] | Real-estate - home equity
2021
Total	4,491		31,445
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2020
Total	29,767		8,264
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2019
Total	8,228		13,929
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2018
Total	12,335		11,257
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2017
Total	10,261		11,888
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Prior
Total	121,634		129,039
Current period gross charge-offs	0		(34)
Current period recoveries	0		138
Total net (charge-offs) recoveries	0		104
Revolving Loans Amortized Cost Basis
Total	958,190		991,770
Current period gross charge-offs	(212)		(1,159)
Current period recoveries	51		366
Total net (charge-offs) recoveries	(161)		(793)
Total
Total	1,149,958		1,202,913
Current period gross charge-offs	(212)		(1,193)
Current period recoveries	51		504
Total net (charge-offs) recoveries	161		689
Payment Activity, Aging Status [Member] | Real-estate - home equity | Performing
2021
Total	4,491		31,445
2020
Total	29,767		8,176
2019
Total	8,140		13,906
2018
Total	12,312		11,024
2017
Total	9,997		11,667
Prior
Total	119,037		126,749
Revolving Loans Amortized Cost Basis
Total	948,645		982,285
Total
Total	1,137,234		1,190,573
Payment Activity, Aging Status [Member] | Real-estate - home equity | Nonperforming Financial Instruments [Member]
2021
Total	0		0
2020
Total	0		88
2019
Total	88		23
2018
Total	23		233
2017
Total	264		221
Prior
Total	2,597		2,290
Revolving Loans Amortized Cost Basis
Total	9,545		9,485
Total
Total	12,724		12,340
Payment Activity, Aging Status [Member] | Real estate - residential mortgage
2021
Total	358,906		1,255,749
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2020
Total	1,244,373		588,361
Current period gross charge-offs	0		(68)
Current period recoveries	0		68
Total net (charge-offs) recoveries	0		0
2019
Total	515,546		231,575
Current period gross charge-offs	(40)		(101)
Current period recoveries	0		16
Total net (charge-offs) recoveries	(40)		(85)
2018
Total	184,959		344,046
Current period gross charge-offs	(47)		(190)
Current period recoveries	3		1
Total net (charge-offs) recoveries	(44)		(189)
2017
Total	294,959		265,712
Current period gross charge-offs	0		(7)
Current period recoveries	1		1
Total net (charge-offs) recoveries	1		(6)
Prior
Total	655,315		456,472
Current period gross charge-offs	(105)		(254)
Current period recoveries	0		405
Total net (charge-offs) recoveries	(105)		151
Revolving Loans Amortized Cost Basis
Total	0		0
Current period gross charge-offs	0		0
Current period recoveries	92		0
Total net (charge-offs) recoveries	92		0
Total
Total	3,254,058		3,141,915
Current period gross charge-offs	(192)		(620)
Current period recoveries	96		491
Total net (charge-offs) recoveries	96		129
Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Performing
2021
Total	358,906		1,255,532
2020
Total	1,240,446		585,878
2019
Total	513,892		228,398
2018
Total	181,509		341,563
2017
Total	292,014		264,990
Prior
Total	630,996		434,889
Revolving Loans Amortized Cost Basis
Total	0		0
Total
Total	3,217,763		3,111,250
Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Nonperforming Financial Instruments [Member]
2021
Total	0		217
2020
Total	3,927		2,483
2019
Total	1,654		3,177
2018
Total	3,450		2,483
2017
Total	2,945		722
Prior
Total	24,319		21,583
Revolving Loans Amortized Cost Basis
Total	0		0
Total
Total	36,295		30,665
Payment Activity, Aging Status [Member] | Consumer
2021
Total	27,910		114,567
Current period gross charge-offs	0		(134)
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		(134)
2020
Total	104,051		98,606
Current period gross charge-offs	(95)		(542)
Current period recoveries	33		64
Total net (charge-offs) recoveries	(62)		(478)
2019
Total	90,222		95,196
Current period gross charge-offs	(94)		(524)
Current period recoveries	5		165
Total net (charge-offs) recoveries	(89)		(359)
2018
Total	85,900		43,475
Current period gross charge-offs	(111)		(444)
Current period recoveries	11		159
Total net (charge-offs) recoveries	(100)		(285)
2017
Total	38,225		25,918
Current period gross charge-offs	(79)		(489)
Current period recoveries	19		94
Total net (charge-offs) recoveries	(60)		(395)
Prior
Total	57,128		36,236
Current period gross charge-offs	(229)		(769)
Current period recoveries	321		101
Total net (charge-offs) recoveries	92		(668)
Revolving Loans Amortized Cost Basis
Total	48,421		52,732
Current period gross charge-offs	(27)		(498)
Current period recoveries	0		1,292
Total net (charge-offs) recoveries	(27)		794
Total
Total	451,857		466,772
Current period gross charge-offs	(635)		(3,400)
Current period recoveries	389		1,875
Total net (charge-offs) recoveries	246		1,525
Payment Activity, Aging Status [Member] | Consumer | Performing
2021
Total	27,910		114,399
2020
Total	103,924		98,587
2019
Total	90,185		95,072
2018
Total	85,837		43,334
2017
Total	38,190		25,804
Prior
Total	56,885		36,086
Revolving Loans Amortized Cost Basis
Total	48,371		52,698
Total
Total	451,302		466,022
Payment Activity, Aging Status [Member] | Consumer | Nonperforming Financial Instruments [Member]
2021
Total	0		168
2020
Total	127		19
2019
Total	37		124
2018
Total	63		141
2017
Total	35		114
Prior
Total	243		150
Revolving Loans Amortized Cost Basis
Total	50		34
Total
Total	555		750
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts
2021
Total	25,663		102,324
Current period gross charge-offs	0		(606)
Current period recoveries	0		185
Total net (charge-offs) recoveries	0		(421)
2020
Total	68,641		65,303
Current period gross charge-offs	(968)		(1,581)
Current period recoveries	120		349
Total net (charge-offs) recoveries	(848)		(1,232)
2019
Total	51,804		49,483
Current period gross charge-offs	0		0
Current period recoveries	39		21
Total net (charge-offs) recoveries	39		21
2018
Total	36,350		50,978
Current period gross charge-offs	0		0
Current period recoveries	0		18
Total net (charge-offs) recoveries	0		18
2017
Total	38,230		15,773
Current period gross charge-offs	0		0
Current period recoveries	0		11
Total net (charge-offs) recoveries	0		11
Prior
Total	13,080		5,322
Current period gross charge-offs	0		0
Current period recoveries	0		21
Total net (charge-offs) recoveries	0		21
Revolving Loans Amortized Cost Basis
Total	0		0
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Total
Total	233,768		289,183
Current period gross charge-offs	(968)		(2,187)
Current period recoveries	159		605
Total net (charge-offs) recoveries	809		1,582
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Performing
2021
Total	25,663		102,324
2020
Total	68,641		65,303
2019
Total	51,804		49,453
2018
Total	36,350		34,995
2017
Total	22,506		15,631
Prior
Total	13,054		5,040
Revolving Loans Amortized Cost Basis
Total	0		0
Total
Total	218,018		272,746
Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Nonperforming Financial Instruments [Member]
2021
Total	0		0
2020
Total	0		0
2019
Total	0		30
2018
Total	0		15,983
2017
Total	15,724		142
Prior
Total	26		282
Revolving Loans Amortized Cost Basis
Total	0		0
Total
Total	15,750		16,437
Payment Activity, Aging Status [Member] | Construction - other
2021
Total	17,458		96,444
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2020
Total	97,829		24,888
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2019
Total	16,536		6,822
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2018
Total	4,755		178
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
2017
Total	176		16
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Prior
Total	16		0
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Revolving Loans Amortized Cost Basis
Total	0		0
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Total
Total	136,770		128,348
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Payment Activity, Aging Status [Member] | Construction - other | Performing
2021
Total	17,458		96,444
2020
Total	97,829		24,888
2019
Total	16,172		6,822
2018
Total	4,755		0
2017
Total	0		16
Prior
Total	16		0
Revolving Loans Amortized Cost Basis
Total	0		0
Total
Total	136,230		128,170
Payment Activity, Aging Status [Member] | Construction - other | Nonperforming Financial Instruments [Member]
2021
Total	0		0
2020
Total	0		0
2019
Total	364		0
2018
Total	0		178
2017
Total	176		0
Prior
Total	0		0
Revolving Loans Amortized Cost Basis
Total	0		0
Total
Total	540		178
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member]
Revolving Loans Amortized Cost Basis
Total	321		1,344
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Pass
Revolving Loans Amortized Cost Basis
Total	321		404
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Special Mention
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Substandard or Lower
Revolving Loans Amortized Cost Basis
Total	0		940
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction(1)
Revolving Loans Amortized Cost Basis
Total	0		0
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Pass
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Special Mention
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - construction(1) | Substandard or Lower
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial (1)
Revolving Loans Amortized Cost Basis
Total	0		0
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Pass
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Special Mention
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Commercial and industrial (1) | Substandard or Lower
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage
Revolving Loans Amortized Cost Basis
Total	321		1,344
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Pass
Revolving Loans Amortized Cost Basis
Total	321		404
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Special Mention
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Portfolio Segment and Loan Class [Member] | Real estate - commercial mortgage | Substandard or Lower
Revolving Loans Amortized Cost Basis
Total	0		940
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member]
Revolving Loans Amortized Cost Basis
Total	5,052		5,363
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Performing
Revolving Loans Amortized Cost Basis
Total	4,845		5,363
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Nonperforming Financial Instruments [Member]
Revolving Loans Amortized Cost Basis
Total	207		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity
Revolving Loans Amortized Cost Basis
Total	5,052		5,321
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity | Performing
Revolving Loans Amortized Cost Basis
Total	4,845		5,321
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real-estate - home equity | Nonperforming Financial Instruments [Member]
Revolving Loans Amortized Cost Basis
Total	207		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage
Revolving Loans Amortized Cost Basis
Total	0		0
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Performing
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Real estate - residential mortgage | Nonperforming Financial Instruments [Member]
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer
Revolving Loans Amortized Cost Basis
Total	0		42
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer | Performing
Revolving Loans Amortized Cost Basis
Total	0		42
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Consumer | Nonperforming Financial Instruments [Member]
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts
Revolving Loans Amortized Cost Basis
Total	0		0
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Performing
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Equipment lease financing, other and overdrafts | Nonperforming Financial Instruments [Member]
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other
Revolving Loans Amortized Cost Basis
Total	0		0
Current period gross charge-offs	0		0
Current period recoveries	0		0
Total net (charge-offs) recoveries	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other | Performing
Revolving Loans Amortized Cost Basis
Total	0		0
Conversion to Term Loan [Member] | Payment Activity, Aging Status [Member] | Construction - other | Nonperforming Financial Instruments [Member]
Revolving Loans Amortized Cost Basis
Total	$ 0		$ 0

XML

Loans and Allowance for Credit Losses Summary of Delinquency and Non-Performing Status by Portfolio Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Impaired [Line Items]
Net Loans	$ 18,990,986	$ 18,900,820
Real-estate - home equity
Financing Receivable, Impaired [Line Items]
Net Loans	1,149,958	1,202,913
Real estate - residential mortgage
Financing Receivable, Impaired [Line Items]
Net Loans	3,254,058	3,141,915
Consumer
Financing Receivable, Impaired [Line Items]
Net Loans	451,857	466,772
Equipment lease financing, other and overdrafts
Financing Receivable, Impaired [Line Items]
Net Loans	$ 233,768	$ 266,082

XML

Loans and Allowance for Credit Losses Non-Performing Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Non-accrual loans and leases	$ 143,889	$ 137,198
Loans and leases 90 days or more past due and still accruing	8,559	9,929
Total non-performing loans and leases	152,448	147,127
Other real estate owned (OREO)	3,664	4,178
Total non-performing assets	156,112	151,305
Mortgage Loans in Process of Foreclosure, Amount	$ 7,600	$ 8,100

XML

Loans and Allowance for Credit Losses Past Due Loan Status and Non-Accrual Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
≥ 90 Days Past Due and Accruing	$ 8,559	$ 9,929
Non- accrual	143,889	137,198
Current	18,808,411	18,673,373
Net Loans	18,990,986	18,900,820
Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	24,089	59,999
Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	6,038	20,321
Real estate - commercial mortgage
Financing Receivable, Past Due [Line Items]
≥ 90 Days Past Due and Accruing	2,187	1,177
Non- accrual	51,977	51,470
Current	7,076,861	7,028,173
Net Loans	7,142,137	7,105,092
Real estate - commercial mortgage | Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	9,596	14,999
Real estate - commercial mortgage | Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	1,516	9,273
Commercial and industrial (1)
Financing Receivable, Past Due [Line Items]
≥ 90 Days Past Due and Accruing	219	616
Non- accrual	31,652	31,993
Current	5,640,231	5,625,866
Net Loans	5,675,714	5,670,828
Commercial and industrial (1) | Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	1,718	11,285
Commercial and industrial (1) | Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	1,894	1,068
Real estate - residential mortgage
Financing Receivable, Past Due [Line Items]
≥ 90 Days Past Due and Accruing	2,750	4,687
Non- accrual	33,401	26,107
Current	3,208,489	3,081,165
Net Loans	3,254,058	3,141,915
Real estate - residential mortgage | Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	8,485	22,281
Real estate - residential mortgage | Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	933	7,675
Real-estate - home equity
Financing Receivable, Past Due [Line Items]
≥ 90 Days Past Due and Accruing	3,148	2,753
Non- accrual	9,368	9,588
Current	1,133,585	1,183,296
Net Loans	1,149,958	1,202,913
Real-estate - home equity | Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	2,795	5,622
Real-estate - home equity | Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	1,062	1,654
Real-estate - construction
Financing Receivable, Past Due [Line Items]
≥ 90 Days Past Due and Accruing	0	155
Non- accrual	1,441	1,395
Current	1,081,883	1,043,730
Net Loans	1,083,494	1,047,218
Real-estate - construction | Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	170	1,938
Real-estate - construction | Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	0	0
Consumer
Financing Receivable, Past Due [Line Items]
≥ 90 Days Past Due and Accruing	255	417
Non- accrual	301	332
Current	449,586	462,486
Net Loans	451,857	466,772
Consumer | Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	1,224	3,036
Consumer | Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	491	501
Equipment lease financing, other and overdrafts
Financing Receivable, Past Due [Line Items]
≥ 90 Days Past Due and Accruing	0	124
Non- accrual	15,749	16,313
Current	217,776	248,657
Net Loans	233,768	266,082
Equipment lease financing, other and overdrafts | Financial Asset, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	101	838
Equipment lease financing, other and overdrafts | Financial Asset, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due and Non-accrual	$ 142	$ 150

XML

Loans and Allowance for Credit Losses Loans Modified Under Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Accruing Troubled Debt Restructurings	$ 67,049	$ 68,426
Non-accrual TDRs (1)	44,986	35,755
Total TDRs	112,035	104,181
Real estate - commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Accruing Troubled Debt Restructurings	27,961	28,451
Commercial Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Accruing Troubled Debt Restructurings	7,041	6,982
Residential Mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Accruing Troubled Debt Restructurings	18,214	18,602
Real-estate - home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Accruing Troubled Debt Restructurings	13,674	14,391
Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Accruing Troubled Debt Restructurings	154	0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Accruing Troubled Debt Restructurings	$ 5	$ 0

XML

Loans and Allowance for Credit Losses Troubled Debt Restructuring Modification (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) loans	Mar. 31, 2020 USD ($) loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	35	17
Post-Modification Recorded Investment | $	$ 13,984	$ 1,703
Real estate - commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	2	1
Post-Modification Recorded Investment | $	$ 4,162	$ 392
Real-estate - home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	5	8
Post-Modification Recorded Investment | $	$ 148	$ 577
Real estate - residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	23	7
Post-Modification Recorded Investment | $	$ 7,626	$ 660

XML

Loans and Allowance for Credit Losses TDRs by Class Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) loans	Mar. 31, 2020 USD ($) loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	35	17
Post-Modification Recorded Investment | $	$ 13,984	$ 1,703
Commercial and industrial (1)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	4	1
Post-Modification Recorded Investment | $	$ 1,894	$ 74
Real estate - commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	2	1
Post-Modification Recorded Investment | $	$ 4,162	$ 392
Real estate - residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	23	7
Post-Modification Recorded Investment | $	$ 7,626	$ 660
Real-estate - home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	5	8
Post-Modification Recorded Investment | $	$ 148	$ 577
Real-estate - construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	1	0
Post-Modification Recorded Investment | $	$ 154	$ 0

XML

Loans and Allowance for Credit Losses Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans with principal balances approximately in percentage	97.00%		83.00%
Unpaid principal balance, with no related allowance	$ 61,892		$ 68,595
Excluded from TDRs	3,600,000	$ 1,000,000
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum balance of loans evaluated individually for impairment	1,000		$ 1,000
Impaired loans balances, real estate as collateral	$ 1,000

XML

Mortgage Servicing Rights Summary of Changes in Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Servicing Asset [Abstract]
Fair value of MSRs	$ 33,400		$ 28,200
Residential Mortgage
Amortized Cost:
Balance at beginning of period	38,745	$ 39,267
Originations of MSRs	2,811	1,478
Amortization	(3,753)	(1,891)
Balance at end of period	37,803	38,854
Servicing Asset [Abstract]
Beginning balance	10,500	0
Reduction (addition) to valuation allowance	(6,100)	1,100
Ending balance	4,400	1,100
Net MSRs at end of period	$ 33,403	$ 37,754

XML

Mortgage Servicing Rights - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Servicing Asset at Amortized Cost [Line Items]
Mortgage Loans Serviced By For Third Parties	$ 4,600,000		$ 4,700,000
Fair value of MSRs	33,400		28,200
Residential Mortgage
Servicing Asset at Amortized Cost [Line Items]
Reduction (addition) to valuation allowance	(6,100)	$ 1,100
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance	$ 4,400	$ 1,100	$ 10,500	$ 0

XML

Derivative Financial Instruments Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Foreign currency open position	$ 500
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	3,400
Derivative, Net Liability Position, Aggregate Fair Value	492
Collateral Already Posted, Aggregate Fair Value	143,100
Derivative, Net Liability Position, Termination Value	492
Mortgage Loans Held For Sale [Member]
Derivative [Line Items]
Gain (loss) in fair values of mortgage loans held for sale	$ (2,900)	$ 733

XML

Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative asset, fair value	$ 190,003	$ 331,269
Derivative liability, gross liability	(108,839)	(165,210)
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	274,909	382,903
Derivative liability, notional amount	40,007	3,154
Derivative asset, fair value	2,198	8,034
Derivative liability, gross liability	(316)	(35)
Forward Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	91,264	0
Derivative liability, notional amount	0	292,262
Derivative asset, fair value	4,650	0
Derivative liability, gross liability	0	(2,263)
Interest Rate Swap with Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	3,169,658	3,834,062
Derivative liability, notional amount	769,300	45,640
Derivative asset, fair value	179,934	330,951
Derivative liability, gross liability	(9,721)	(2)
Interest Rate Swap With Counterparty [Member]
Derivative [Line Items]
Derivative asset, notional amount	769,300	45,640
Derivative liability, notional amount	3,169,658	3,834,062
Derivative asset, fair value	9,721	2
Derivative liability, gross liability	(98,368)	(165,205)
Balance Sheet Hedging Instruments
Derivative [Line Items]
Derivative asset, notional amount	0	0
Derivative liability, notional amount	500,000	0
Derivative asset, fair value	305	0
Derivative liability, gross liability	(492)	0
Foreign Exchange Contracts With Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	12,196	1,121
Derivative liability, notional amount	552	5,963
Derivative asset, fair value	280	5
Derivative liability, gross liability	(14)	(275)
Foreign Exchange Contracts With Correspondent Banks [Member]
Derivative [Line Items]
Derivative asset, notional amount	2,821	6,372
Derivative liability, notional amount	12,213	1,422
Derivative asset, fair value	43	318
Derivative liability, gross liability	$ (258)	$ (5)

XML

Derivative Financial Instruments Summary of Effect of Fair Value and Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Derivative [Line Items]
Amount of Gain Reclassified from AOCI into Income	$ 1,707
Interest Rate Swap [Member]
Derivative [Line Items]
Amount of Loss Recognized in OCI on Derivative	(2,065)
Amount of Loss Recognized in OCI Included Component	(2,065)
Amount of Gain or (Loss) Recognized in OCI Excluded Component	0
Interest Rate Swap [Member] | Interest Income
Derivative [Line Items]
Amount of Gain Reclassified from AOCI into Income	144
Amount of Gain Reclassified from AOCI into Income Included Component	144
Amount of Gain or (Loss) Reclassified from AOCI into Income Excluded Component	$ 0

XML

Derivative Financial Instruments Fair Value Gains and Losses on Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Net fair value gains on derivative financial instruments	$ 700	$ 1,231
Mortgage Banking Derivatives [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	796	1,040
Interest Rate Swap [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	(104)	72
Foreign Exchange Contract [Member]
Derivative [Line Items]
Net fair value gains on derivative financial instruments	$ 8	$ 119

XML

Derivative Financial Instruments Summary of Mortgage Loans Held For Sale (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale	$ 34,092		$ 83,886
Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(2,900)	$ 733
Cost [Member] | Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale	33,801		80,662
Fair value [Member] | Mortgage Loans Held For Sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale	$ 34,092		$ 83,886

XML

Derivative Financial Instruments Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Offsetting Assets [Line Items]
Derivative asset, fair value	$ 190,003	$ 331,269
Derivative, Collateral, Obligation to Return Securities	(11,822)	(7)
Derivative, Collateral, Obligation to Return Cash	0	0
Net Amount	178,181	331,262
Derivative liability, gross liability	108,839	165,210
Derivative liability, Collateral, Right to Reclaim Securities	(11,822)	(7)
Derivative liability, Collateral, Right to Reclaim Cash	(96,802)	(165,203)
Derivative liability, Net Amount	215	0
Interest Rate Swap [Member]
Offsetting Assets [Line Items]
Derivative asset, fair value	189,960	330,951
Derivative, Collateral, Obligation to Return Securities	(11,779)	(2)
Derivative, Collateral, Obligation to Return Cash	0	0
Net Amount	178,181	330,949
Derivative liability, gross liability	108,581	165,205
Derivative liability, Collateral, Right to Reclaim Securities	(11,779)	(2)
Derivative liability, Collateral, Right to Reclaim Cash	(96,802)	(165,203)
Derivative liability, Net Amount	0	0
Foreign Exchange Contract [Member]
Offsetting Assets [Line Items]
Derivative asset, fair value	43	318
Derivative, Collateral, Obligation to Return Securities	(43)	(5)
Derivative, Collateral, Obligation to Return Cash	0	0
Net Amount	0	313
Derivative liability, gross liability	258	5
Derivative liability, Collateral, Right to Reclaim Securities	(43)	(5)
Derivative liability, Collateral, Right to Reclaim Cash	0	0
Derivative liability, Net Amount	$ 215	$ 0

XML

Tax Credit Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Affordable housing tax credit investment, net	$ 145,888		$ 152,203
Other tax credit investments, net	58,782		59,224
Total TCIs, net	204,670		211,427
Unfunded affordable housing tax credit commitments	30,762		31,562
Other tax credit liabilities	49,491		49,491
Total unfunded tax credit commitments and liabilities	80,253		$ 81,053
Affordable housing tax credits and other tax benefits	(6,488)	$ (7,194)
Other tax credit investment credits and tax benefits	(723)	(941)
Amortization of affordable housing investments, net of tax benefit	4,366	5,024
Deferred tax expense	160	208
Total net reduction in income tax expense	(2,685)	(2,903)
Affordable housing tax credits investment	986	1,022
Other tax credit investment amortization	545	428
Total amortization of TCIs	$ 1,531	$ 1,450

XML

Accumulated Other Comprehensive Income Changes in Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity [Abstract]
Unrealized gain on securities, before tax amount	$ (51,751)	$ 22,380
Unrealized gain on securities, tax effect	11,753	(4,949)
Unrealized gain on securities, net of tax amount	(39,999)	17,431
Reclassification adjustment for securities gains included in net income, before tax amount	487	(46)
Reclassification adjustment for securities gains included in net income, tax effect	(110)	10
Reclassification adjustment for securities gains included in net income, net of tax amount	377	(36)
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Amortization Of Unrealized Losses On Investments Transferred From Available-For-Sale To Held-To-Maturity, Before Tax	2,312	1,022
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Amortization Of Unrealized Losses On Investments Transferred From Available-For-Sale To Held-To-Maturity, Tax	(525)	(227)
Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Amortization Of Unrealized Losses On Investments Transferred From Available-For-Sale To Held-To Maturity, After Tax	1,787	795
Net unrealized loss on interest rate swaps used in cash flow hedges, before-tax amount	(2,209)
Net unrealized loss on interest rate swaps used in cash flow hedges, tax	(502)
Net unrealized loss on interest rate swaps used in cash flow hedges, net of tax amount	(1,707)
Amortization of net unrecognized pension and postretirement items, before tax amount	370	328
Amortization of net unrecognized pension and postretirement items, tax effect	(81)	(73)
Amortization of net unrecognized pension and postretirement items, net of tax amount	289	255
Total Other Comprehensive Income, Before Tax Amount	(50,791)	23,684
Total Other Comprehensive Income, Tax Effect	11,538	(5,239)
Other Comprehensive (Loss) Income	$ (39,253)	$ 18,445

XML

Accumulated Other Comprehensive Income Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ 2,616,828	$ 2,342,176
Ending Balance	2,629,655	2,285,748
Unrealized Gains (Losses) on Investment Securities
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	81,604	14,864
OCI before reclassifications	(39,999)	17,431
Amounts reclassified from AOCI	377	(36)
Ending Balance	43,769	33,054
Net Unrealized (Loss) on Interest Rate Swaps used in Cash Flow Hedges
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	0	0
OCI before reclassifications	0	0
Amounts reclassified from AOCI	(1,707)	0
Ending Balance	(1,707)	0
Unrecognized Pension and Postretirement Plan Income (Costs)
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(16,513)	(15,001)
OCI before reclassifications	0	0
Amounts reclassified from AOCI	289	255
Ending Balance	(16,224)	(14,746)
Total
Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	65,091	(137)
OCI before reclassifications	(39,999)	17,431
Amounts reclassified from AOCI	(1,042)	219
Ending Balance	25,838	18,308
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from AOCI	1,787	795
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Investment Securities
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from AOCI	1,787	795
Reclassification out of Accumulated Other Comprehensive Income | Net Unrealized (Loss) on Interest Rate Swaps used in Cash Flow Hedges
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from AOCI	0	0
Reclassification out of Accumulated Other Comprehensive Income | Unrecognized Pension and Postretirement Plan Income (Costs)
Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from AOCI	$ 0	$ 0

XML

Fair Value Measurements Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	$ 2,758,597	$ 3,062,143
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	2,758,597
Mortgages Held-for-sale, Fair Value Disclosure	34,092	83,886
Available-for-sale Securities, Fair Value Disclosure		3,062,143
Investments held in Rabbi Trust	25,374	24,383
Derivative assets	197,131	339,310
Assets, Fair Value Disclosure	3,015,194	3,509,722
Liabilities Held-In-Trust, Fair Value Disclosure	25,374	24,383
Derivative Liability	109,169	167,785
Total liabilities	134,543	192,168
US States and Political Subdivisions Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	994,760
Available-for-sale Securities, Fair Value Disclosure		952,613
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	994,760
Available-for-sale Securities, Fair Value Disclosure		952,613
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	359,371
Available-for-sale Securities, Fair Value Disclosure		367,145
Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	359,371
Available-for-sale Securities, Fair Value Disclosure		367,145
Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	399,881
Available-for-sale Securities, Fair Value Disclosure		503,766
Collateralized Mortgage Obligations [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	399,881
Available-for-sale Securities, Fair Value Disclosure		503,766
Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	255,364
Available-for-sale Securities, Fair Value Disclosure		377,998
Mortgage-Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	255,364
Available-for-sale Securities, Fair Value Disclosure		377,998
Commercial Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	673,017
Available-for-sale Securities, Fair Value Disclosure		762,415
Commercial Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	673,017
Available-for-sale Securities, Fair Value Disclosure		762,415
Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	76,204
Available-for-sale Securities, Fair Value Disclosure		98,206
Auction Rate Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	76,204
Available-for-sale Securities, Fair Value Disclosure		98,206
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Mortgages Held-for-sale, Fair Value Disclosure	0	0
Available-for-sale Securities, Fair Value Disclosure		0
Investments held in Rabbi Trust	25,374	24,383
Derivative assets	323	323
Assets, Fair Value Disclosure	25,697	24,706
Liabilities Held-In-Trust, Fair Value Disclosure	25,374	24,383
Derivative Liability	272	280
Total liabilities	25,646	24,663
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 1 [Member] | Collateralized Mortgage Obligations [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 1 [Member] | Mortgage-Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 1 [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 1 [Member] | Auction Rate Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	2,682,393
Mortgages Held-for-sale, Fair Value Disclosure	34,092	83,886
Available-for-sale Securities, Fair Value Disclosure		2,963,937
Investments held in Rabbi Trust	0	0
Derivative assets	196,808	338,987
Assets, Fair Value Disclosure	2,913,293	3,386,810
Liabilities Held-In-Trust, Fair Value Disclosure	0	0
Derivative Liability	108,897	167,505
Total liabilities	108,897	167,505
Fair Value, Inputs, Level 2 [Member] | Other Corporate Debt [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	4,400
Fair Value, Inputs, Level 2 [Member] | Financial Institutions Subordinated Debt [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	355,000	362,800
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	994,760
Available-for-sale Securities, Fair Value Disclosure		952,613
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	359,371
Available-for-sale Securities, Fair Value Disclosure		367,145
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Obligations [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	399,881
Available-for-sale Securities, Fair Value Disclosure		503,766
Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	255,364
Available-for-sale Securities, Fair Value Disclosure		377,998
Fair Value, Inputs, Level 2 [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	673,017
Available-for-sale Securities, Fair Value Disclosure		762,415
Fair Value, Inputs, Level 2 [Member] | Auction Rate Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	76,204
Mortgages Held-for-sale, Fair Value Disclosure	0	0
Available-for-sale Securities, Fair Value Disclosure		98,206
Investments held in Rabbi Trust	0	0
Derivative assets	0	0
Assets, Fair Value Disclosure	76,204	98,206
Liabilities Held-In-Trust, Fair Value Disclosure	0	0
Derivative Liability	0	0
Total liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage Obligations [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	0
Available-for-sale Securities, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | Auction Rate Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated Fair Value	$ 76,204
Available-for-sale Securities, Fair Value Disclosure		$ 98,206

XML

Fair Value Measurements Changes in Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Level 3 Inputs (Details) - Fair Value, Recurring [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Single-issuer Trust Preferred Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 0	$ 2,400
Sales	0
Unrealized adjustment to fair value	0	(242)
(Premium amortization) discount accretion		2
Balance, end of period	0	2,160
Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	98,206	101,926
Sales	(24,619)
Unrealized adjustment to fair value	2,617	(8,260)
(Premium amortization) discount accretion		0
Balance, end of period	$ 76,204	$ 93,666

XML

Fair Value Measurements Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO	$ 3,664	$ 4,178
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans	122,962	116,584
OREO	3,664	4,178
MSRs (1)	33,403	28,245
Assets, Fair Value Disclosure	$ 160,029	$ 149,007

XML

Fair Value Measurements Details of Book Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
AFS, at estimated fair value	$ 2,758,597	$ 3,062,143
HTM securities	843,743
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	1,661,876	1,847,832
FRB and FHLB stock	66,209	92,129
Loans held for sale	34,092	83,886
AFS, at estimated fair value	2,758,597	3,062,143
HTM securities	853,413	278,281
Net Loans	18,725,000	18,623,253
Accrued interest receivable	65,649	72,942
Other financial assets	510,534	650,425
Demand and savings deposits	19,250,538	18,279,358
Brokered deposits	309,873	335,185
Time deposits	2,073,427	2,224,665
Short-term borrowings	520,989	630,066
Accrued interest payable	5,618	10,365
Other financial liabilities	297,069	338,747
FHLB advances and long-term debt	626,407	1,296,263
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	1,661,876	1,847,832
FRB and FHLB stock	66,209	92,129
Loans held for sale	34,092	83,886
AFS, at estimated fair value	2,758,597	3,062,143
HTM securities	843,743	296,857
Net Loans	18,354,532	18,354,532
Accrued interest receivable	65,649	72,942
Other financial assets	510,534	650,425
Demand and savings deposits	19,250,538	18,279,358
Brokered deposits	310,874	336,391
Time deposits	2,087,663	2,246,457
Short-term borrowings	520,989	630,066
Accrued interest payable	5,618	10,365
Other financial liabilities	297,069	338,747
FHLB advances and long-term debt	607,577	1,332,041
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	1,661,876	1,847,832
FRB and FHLB stock	0	0
Loans held for sale	0	0
AFS, at estimated fair value	0	0
HTM securities	0	0
Net Loans	0	0
Accrued interest receivable	65,649	72,942
Other financial assets	276,659	279,015
Demand and savings deposits	19,250,538	18,279,358
Brokered deposits	289,873	295,185
Time deposits	0	0
Short-term borrowings	520,989	630,066
Accrued interest payable	5,618	10,365
Other financial liabilities	173,899	156,869
FHLB advances and long-term debt	0	0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	0	0
FRB and FHLB stock	66,209	92,129
Loans held for sale	34,092	83,886
AFS, at estimated fair value	2,682,393	2,963,937
HTM securities	843,743	296,857
Net Loans	0	0
Accrued interest receivable	0	0
Other financial assets	196,808	338,987
Demand and savings deposits	0	0
Brokered deposits	21,001	41,206
Time deposits	2,087,663	2,246,457
Short-term borrowings	0	0
Accrued interest payable	0	0
Other financial liabilities	108,897	167,505
FHLB advances and long-term debt	607,577	1,332,041
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items]
Cash and due from banks	0	0
FRB and FHLB stock	0	0
Loans held for sale	0	0
AFS, at estimated fair value	76,204	98,206
HTM securities	0	0
Net Loans	18,354,532	18,354,532
Accrued interest receivable	0	0
Other financial assets	37,067	32,423
Demand and savings deposits	0	0
Brokered deposits	0	0
Time deposits	0	0
Short-term borrowings	0	0
Accrued interest payable	0	0
Other financial liabilities	14,273	14,373
FHLB advances and long-term debt	$ 0	$ 0

XML

Fair Value Measurements Narrative (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
AFS, at estimated fair value	$ 2,758,597	$ 3,062,143
Significant input, assumed market return to liquidity (years)	5 years
Other real estate owned (OREO)	$ 3,664	4,178
Visa
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Gain on sale of shares	$ 34,000
Common Class B [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment owned, balance (in shares)	133
Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted average annual constant prepayment rate	15.30%
Weighted average discount rate	9.50%
Fair Value, Recurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
AFS, at estimated fair value	$ 2,758,597
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
AFS, at estimated fair value	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
AFS, at estimated fair value	2,682,393
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
AFS, at estimated fair value	76,204
Fair Value, Recurring [Member] | Financial Institutions Subordinated Debt [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
AFS, at estimated fair value	355,000	362,800
Fair Value, Recurring [Member] | Other Corporate Debt [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
AFS, at estimated fair value	4,400
Fair Value, Recurring [Member] | Foreign Exchange Contract [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial liabilities	272	280
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned (OREO)	3,664	4,178
Net MSRs at end of period	33,403	28,245
Foreign Exchange Contract [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial assets	323	323
Forward Commitments [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial assets	6,800	8,000
Other financial liabilities	316	2,300
Interest Rate Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial assets	190,000	331,000
Other financial liabilities	$ 108,600	$ 165,200

XML

Net Income Per Share Reconciliation of Weighted Average Common Shares Outstanding (Details) - $ / shares shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average shares outstanding (basic) (in shares)	162,441	163,475
Impact of common stock equivalents (in shares)	1,296	942
Weighted average shares outstanding (diluted) (in shares)	163,737	164,417
Basic (in dollars per share)	$ 0.43	$ 0.16
Diluted (in dollars per share)	$ 0.43	$ 0.16

XML

Stock-Based Compensation Compensation Expense and Related Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Compensation expense	$ 1,902	$ 1,619
Tax benefit	(414)	(344)
Stock-based compensation expense, net of tax benefit	$ 1,488	$ 1,275

XML

Stock-Based Compensation Narrative (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2021 shares
Directors' Plan [Member]
Statement [Line Items]
Shares reserved for future grants under the stock option and compensation plan	176
Employee Equity Plan [Member]
Statement [Line Items]
Awards vesting period (in years)	3 years
Shares reserved for future grants under the stock option and compensation plan	9,300

XML

Employee Benefit Plans Summary of Pension Plan and Postretirement Plan Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 561	$ 681
Expected return on plan assets	(1,011)	(982)
Net amortization and deferral	504	465
Net periodic benefit	54	164
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	8	11
Net accretion and deferral	(134)	(137)
Net periodic benefit	$ (126)	$ (126)

XML

Commitments and Contingencies Outstanding Commitments to Extend Credit and Letters of Credit (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	$ 9,018,523	$ 8,651,055
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	295,516	298,750
Commercial Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation allowances and reserves, balance	$ 57,917	$ 56,229

XML

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Jan. 01, 2020
Loss Contingencies [Line Items]
ACL - OBS credit exposure	$ 14,273	$ 14,373
Residential Mortgage
Loss Contingencies [Line Items]
Valuation allowances and reserves, balance	1,100	1,100
ACL - OBS credit exposure	$ 9,700	$ 9,100
Accounting Standards Update 2016-13 | Residential Mortgage
Loss Contingencies [Line Items]
Valuation allowances and reserves, balance			$ (2,100)

XML

Long-Term Borrowings (Details)	3 Months Ended
	Mar. 31, 2021 USD ($)
Debt Instrument [Line Items]
Debt extinguishment costs	$ 32,200,000
Payments of FHLBank Borrowings, Financing Activities	536,000,000.0
Prepayment Fees on Advances, Net	20,900,000
Debt extinguishment costs	841,000
Subordinated Debt | November 2024 Subordinated Debt
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 75,000,000.0
Debt instrument, interest rate (as a percent)	4.50%
Debt instrument, effective rate (as a percent)	4.87%
Debt extinguishment costs	$ 11,300,000
Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 60,000,000.0
Debt instrument, interest rate (as a percent)	3.60%
Debt instrument, effective rate (as a percent)	3.95%

XML

Label	Element	Value
Off-Balance Sheet [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	$ 12,600,000