10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2019

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 001-37532

IBERIABANK Corporation

(Exact name of registrant as specified in its charter)

 

Louisiana	72-1280718
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

 

200 West Congress Street
Lafayette,	Louisiana	70501
(Address of principal executive office)		(Zip Code)

(337) 521-4003

(Registrant’s telephone number, including area code)

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 and post 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 Exchange Act).    Yes  ☐    No  ☒

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 $1.00 per share)	IBKC	The NASDAQ Stock Market, LLC
Depositary Shares, Each Representing a 1/400th Interest in	IBKCP	The NASDAQ Stock Market, LLC
a Share of 6.625% Perpetual Preferred Stock, Series B
Depositary Shares, Each Representing a 1/400th Interest in	IBKCO	The NASDAQ Stock Market, LLC
a Share of 6.60% Perpetual Preferred Stock, Series C
Depositary Shares, Each Representing a 1/400th Interest	IBKCN	The NASDAQ Stock Market, LLC
a Share of 6.100% Perpetual Preferred Stock, Series D

At October 31, 2019, the Registrant had 52,267,165 shares of common stock, $1.00 par value, which were issued and outstanding.

IBERIABANK CORPORATION AND SUBSIDIARIES

TABLE OF CONTENTS

	Page
Part I. Financial Information
Item 1.       Financial Statements (unaudited)
Consolidated Balance Sheets as of September 30, 2019 and December 31, 2018	4
Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2019 and 2018	5
Consolidated Statements of Shareholders’ Equity for the three and nine months ended September 30, 2019 and 2018	7
Consolidated Statements of Cash Flows for the nine months ended September 30, 2019 and 2018	9
Notes to Unaudited Consolidated Financial Statements	11
Item 2.        Management’s Discussion and Analysis of Financial Condition and Results of Operations	55
Item 3.       Quantitative and Qualitative Disclosures About Market Risk	83
Item 4.       Controls and Procedures	83
Part II. Other Information	84
Item 1.       Legal Proceedings	84
Item 1A.     Risk Factors	84
Item 2.       Unregistered Sales of Equity Securities and Use of Proceeds	84
Item 3.       Defaults Upon Senior Securities	85
Item 4.       Mine Safety Disclosures	85
Item 5.       Other Information	85
Item 6.       Exhibits	86
Signatures	87

3

Part I. FINANCIAL INFORMATION

Item 1. Financial Statements

IBERIABANK CORPORATION AND SUBSIDIARIES

Consolidated Balance Sheets

	(unaudited)
(in thousands, except share data)	September 30, 2019			December 31, 2018
Assets
Cash and due from banks	$	353,346		$	294,186
Interest-bearing deposits in other banks	577,587			396,267
Total cash and cash equivalents	930,933			690,453
Securities available for sale, at fair value	4,238,082			4,783,579
Securities held to maturity (fair values of $192,586 and $204,277, respectively)	185,007			207,446
Mortgage loans held for sale, at fair value	255,276			107,734
Loans and leases, net of unearned income	23,676,537			22,519,815
Allowance for loan and lease losses	(146,235		)	(140,571		)
Loans and leases, net	23,530,302			22,379,244
Premises and equipment, net	298,309			300,507
Goodwill	1,235,533			1,235,533
Other intangible assets	79,143			88,736
Other assets	982,013			1,039,783
Total Assets	$	31,734,598		$	30,833,015
Liabilities
Deposits:
Non-interest-bearing	$	6,518,783		$	6,542,490
Interest-bearing	18,458,502			17,220,941
Total deposits	24,977,285			23,763,431
Short-term borrowings	498,049			1,482,882
Long-term debt	1,394,202			1,166,151
Other liabilities	581,762			364,274
Total Liabilities	27,451,298			26,776,738
Shareholders’ Equity
Preferred stock, $1 par value - 5,000,000 shares authorized
Non-cumulative perpetual, liquidation preference $10,000 per share; 23,750 and 13,750 shares issued and outstanding, respectively, including related surplus	228,485			132,097
Common stock, $1 par value - 100,000,000 shares authorized; 52,265,887 and 54,796,231 shares issued and outstanding, respectively	52,266			54,796
Additional paid-in capital	2,680,328			2,869,416
Retained earnings	1,268,278			1,042,718
Accumulated other comprehensive income (loss)	53,943			(42,750		)
Total Shareholders’ Equity	4,283,300			4,056,277
Total Liabilities and Shareholders’ Equity	$	31,734,598		$	30,833,015

The accompanying Notes are an integral part of these Consolidated Financial Statements.

4

IBERIABANK CORPORATION AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income

(unaudited)

	Three Months Ended September 30,					Nine Months Ended September 30,
(in thousands, except per share data)	2019			2018		2019			2018
Interest and dividend income
Loans and leases, including fees	$	296,790		$	283,125	$	878,355		$	791,670
Mortgage loans held for sale, including fees	1,936			1,037		4,578			3,027
Taxable securities	27,883			27,113		93,461			79,058
Tax-exempt securities	2,049			2,680		6,399			8,154
Other	4,520			3,112		12,436			9,524
Total interest and dividend income	333,178			317,067		995,229			891,433
Interest expense
Deposits	70,753			44,401		196,854			108,804
Short-term borrowings	3,880			4,727		14,793			10,578
Long-term debt	9,212			8,714		28,426			23,824
Total interest expense	83,845			57,842		240,073			143,206
Net interest income	249,333			259,225		755,156			748,227
Provision for credit losses	8,986			11,384		33,504			27,290
Net interest income after provision for credit losses	240,347			247,841		721,652			720,937
Non-interest income
Mortgage income	17,432			12,729		47,725			36,045
Service charges on deposit accounts	13,209			13,520		38,866			39,378
Title revenue	7,170			6,280		19,290			18,153
Broker commissions	1,800			2,627		5,797			7,244
ATM and debit card fee income	2,948			2,470		8,562			8,028
Credit card and merchant-related income	3,400			3,114		10,037			9,347
Trust department income	4,281			3,993		12,836			11,662
Income from bank owned life insurance	1,760			1,744		5,307			4,287
Securities gains (losses), net	27			—		(987		)	(56		)
Commission income	4,533			3,027		12,160			6,534
Other non-interest income	7,114			3,583		15,415			10,971
Total non-interest income	63,674			53,087		175,008			151,593
Non-interest expense
Salaries and employee benefits	103,257			101,159		304,928			313,190
Net occupancy and equipment	21,316			18,889		58,879			58,867
Communication and delivery	3,634			3,773		10,931			11,888
Marketing and business development	3,163			4,068		10,651			13,715
Computer services expense	9,638			9,036		28,178			30,738
Professional services	6,323			5,519		17,017			20,070
Credit and other loan related expense	4,532			4,830		11,532			14,313
Insurance	4,825			6,536		13,276			20,587
Travel and entertainment	2,185			1,846		7,353			7,880
Amortization of acquisition intangibles	4,410			5,382		14,205			16,595
Impairment of long-lived assets and other (gains) losses	(309		)	467		1,251			24,924
Other non-interest expense	9,688			7,557		22,832			21,143
Total non-interest expense	172,662			169,062		501,033			553,910
Income before income tax expense	131,359			131,866		395,627			318,620
Income tax expense	31,509			30,401		94,048			78,410
Net income	99,850			101,465		301,579			240,210
Less: Preferred stock dividends	3,599			3,599		8,146			8,146
Net income available to common shareholders	$	96,251		$	97,866	$	293,433		$	232,064

5

Income available to common shareholders - basic	$	96,251		$	97,866		$	293,433		$	232,064
Less: Earnings allocated to unvested restricted stock	874			908			2,806			2,341
Earnings allocated to common shareholders	$	95,377		$	96,958		$	290,627		$	229,723
Earnings per common share - basic	$	1.83		$	1.74		$	5.47		$	4.17
Earnings per common share - diluted	1.82			1.73			5.43			4.14
Cash dividends declared per common share	0.45			0.39			1.31			1.15
Comprehensive income
Net income	$	99,850		$	101,465		$	301,579		$	240,210
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during the period (net of tax effects of $2,294, $5,906, $27,805, and $24,578, respectively)	6,975			(22,220		)	93,491			(92,460		)
Less: Reclassification adjustment for gains (losses) included in net income (net of tax effects of $7, $0, $244, and $12, respectively)	20			—			(743		)	(44		)
Unrealized gains (losses) on securities, net of tax	6,955			(22,220		)	94,234			(92,416		)
Fair value of derivative instruments designated as cash flow hedges:
Change in fair value of derivative instruments designated as cash flow hedges during the period (net of tax effects of $86, $217, $903, and $1,266, respectively)	(264		)	818			1,992			4,762
Less: Reclassification adjustment for gains (losses) included in net income (net of tax effects of $53, $6, $154, and $47, respectively)	(162		)	(22		)	(467		)	(178		)
Fair value of derivative instruments designated as cash flow hedges, net of tax	(102		)	840			2,459			4,940
Other comprehensive income (loss), net of tax	6,853			(21,380		)	96,693			(87,476		)
Comprehensive income	$	106,703		$	80,085		$	398,272		$	152,734

The accompanying Notes are an integral part of these Consolidated Financial Statements.

6

IBERIABANK CORPORATION AND SUBSIDIARIES

Consolidated Statements of Shareholders’ Equity

(unaudited)

	For the Nine Months Ended
									Additional Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Total
	Preferred Stock			Common Stock
(in thousands, except share and per share data)	Shares	Amount		Shares		Amount
Balance, December 31, 2017	13,750	$	132,097	53,872,272		$	53,872		$	2,787,484		$	769,226		$	(45,888	)	$	3,696,791
Cumulative-effect adjustment due to the adoption of ASU 2016-01 (1)	—	—		—		—			—			(345		)	—			(345		)
Net income	—	—		—		—			—			240,210			—			240,210
Other comprehensive income (loss)	—	—		—		—			—			—			(87,476		)	(87,476		)
Cash dividends declared, $1.15 per share	—	—		—		—			—			(64,288		)	—			(64,288		)
Preferred stock dividends	—	—		—		—			—			(8,146		)	—			(8,146		)
Common stock issued under incentive plans, net of shares surrendered in payment	—	—		109,983		110			(3,252		)	—			—			(3,142		)
Common stock issued for acquisitions	—	—		2,787,773		2,788			211,871			—			—			214,659
Common stock repurchases	—	—		(763,210	)	(763		)	(60,283		)	—			—			(61,046		)
Share-based compensation expense	—	—		—		—			15,144			—			—			15,144
Balance, September 30, 2018	13,750	$	132,097	56,006,818		$	56,007		$	2,950,964		$	936,657		$	(133,364	)	$	3,942,361
Balance, December 31, 2018	13,750	$	132,097	54,796,231		$	54,796		$	2,869,416		$	1,042,718		$	(42,750	)	$	4,056,277
Cumulative-effect adjustment due to the adoption of ASU 2016-02 (2)	—	—		—		—			—			1,847			—			1,847
Net income	—	—		—		—			—			301,579			—			301,579
Other comprehensive income (loss)	—	—		—		—			—			—			96,693			96,693
Cash dividends declared, $1.31 per share	—	—		—		—			—			(69,720		)	—			(69,720		)
Preferred stock dividends	—	—		—		—			—			(8,146		)	—			(8,146		)
Preferred stock issued	10,000	96,388		—		—			—			—			—			96,388
Common stock issued under incentive plans, net of shares surrendered in payment	—	—		169,656		170			(4,348		)	—			—			(4,178		)
Common stock repurchases	—	—		(2,700,000	)	(2,700		)	(202,040		)	—			—			(204,740		)
Share-based compensation expense	—	—		—		—			17,300			—			—			17,300
Balance, September 30, 2019	23,750	$	228,485	52,265,887		$	52,266		$	2,680,328		$	1,268,278		$	53,943		$	4,283,300

(1)	Cumulative-effect adjustment to beginning retained earnings for fair value adjustments related to the reclassification of certain equity investments in accordance with ASU 2016-01, adopted as of January 1, 2018.
(2)	Cumulative-effect adjustment to beginning retained earnings related to the recognition of pre-existing lease liabilities and previously deferred gains on sale-leaseback transactions in accordance with ASU 2016-02, adopted as of January 1, 2019.

The accompanying Notes are an integral part of these Consolidated Financial Statements.

7

	For the Three Months Ended
									Additional Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Total
	Preferred Stock			Common Stock
(in thousands, except share and per share data)	Shares	Amount		Shares		Amount
Balance, June 30, 2018	13,750	$	132,097	56,390,387		$	56,390		$	2,976,833		$	860,073		$	(111,984	)	$	3,913,409
Net income	—	—		—		—			—			101,465			—			101,465
Other comprehensive income (loss)	—	—		—		—			—			—			(21,380		)	(21,380		)
Cash dividends declared, $0.39 per share	—	—		—		—			—			(21,282		)	—			(21,282		)
Preferred stock dividends	—	—		—		—			—			(3,599		)	—			(3,599		)
Common stock issued under incentive plans, net of shares surrendered in payment	—	—		(20,359	)	(20		)	(1,020		)	—			—			(1,040		)
Common stock repurchases	—	—		(363,210	)	(363		)	(30,013		)	—			—			(30,376		)
Share-based compensation expense	—	—		—		—			5,164			—			—			5,164
Balance, September 30, 2018	13,750	$	132,097	56,006,818		$	56,007		$	2,950,964		$	936,657		$	(133,364	)	$	3,942,361
Balance, June 30, 2019	23,750	$	228,485	52,805,461		$	52,805		$	2,714,074		$	1,195,546		$	47,090		$	4,238,000
Net income	—	—		—		—			—			99,850			—			99,850
Other comprehensive income (loss)	—	—		—		—			—			—			6,853			6,853
Cash dividends declared, $0.45 per share	—	—		—		—			—			(23,519		)	—			(23,519		)
Preferred stock dividends	—	—		—		—			—			(3,599		)	—			(3,599		)
Common stock issued under incentive plans, net of shares surrendered in payment	—			12,656		13			257			—			—			270
Common stock repurchases	—	—		(552,230	)	(552		)	(39,464		)	—			—			(40,016		)
Share-based compensation expense	—	—		—		—			5,461			—			—			5,461
Balance, September 30, 2019	23,750	$	228,485	52,265,887		$	52,266		$	2,680,328		$	1,268,278		$	53,943		$	4,283,300

The accompanying Notes are an integral part of these Consolidated Financial Statements.

8

IBERIABANK CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows

(unaudited)

	For the Nine Months Ended September 30,
(in thousands)	2019			2018
Cash Flows from Operating Activities
Net income	$	301,579		$	240,210
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and accretion, including amortization of purchase accounting adjustments and market value adjustments	5,638			(1,644		)
Provision for credit losses	33,504			27,290
Share-based compensation expense - equity awards	17,300			15,144
(Gain) loss on sale of OREO and long-lived assets, net of impairment	(1,657		)	6,831
Securities losses, net	987			56
(Gain) loss on early termination of FDIC loss share agreements	—			(2,708		)
Cash paid for early termination of FDIC loss share agreements	—			(5,637		)
Deferred income tax expense	29,407			31,348
Originations of mortgage loans held for sale	(1,443,094		)	(1,139,117		)
Proceeds from sales of mortgage loans held for sale	1,347,850			1,260,962
Realized and unrealized (gain) on mortgage loans held for sale, net	(52,873		)	(35,244		)
Other operating activities, net	200,074			(36,390		)
Net Cash Provided by Operating Activities	438,715			361,101
Cash Flows from Investing Activities
Proceeds from sales of securities available for sale	299,513			18,867
Proceeds from maturities, prepayments and calls of securities available for sale	549,747			493,095
Purchases of securities available for sale, net of securities available for sale acquired	(199,321		)	(711,258		)
Proceeds from maturities, prepayments and calls of securities held to maturity	20,353			11,464
Purchases of equity securities, net of equity securities acquired	(15,154		)	(21,090		)
Proceeds from sales of equity securities	25,741			70,371
Increase in loans, net of loans acquired	(1,135,759		)	(767,715		)
Proceeds from sales of premises and equipment	1,149			5,698
Purchases of premises and equipment, net of premises and equipment acquired	(17,030		)	(11,575		)
Proceeds from dispositions of OREO	9,471			12,166
Cash paid for additional investment in tax credit entities	(6,060		)	(6,059		)
Cash received for acquisition of a business, net of cash paid	—			99,318
Purchase of bank owned life insurance policies	—			(50,000		)
Other investing activities, net	999			595
Net Cash Used in Investing Activities	(466,351		)	(856,123		)
Cash Flows from Financing Activities
Increase in deposits, net of deposits acquired	1,213,854			662,680
Net change in short-term borrowings	(984,833		)	251,422
Proceeds from long-term debt, net of long-term debt acquired	500,000			927,884
Repayments of long-term debt	(271,562		)	(1,361,482		)
Cash dividends paid on common stock	(68,667		)	(62,937		)
Cash dividends paid on preferred stock	(8,146		)	(8,146		)
Net share-based compensation stock transactions	(4,178		)	(3,142		)
Payments to repurchase common stock	(204,740		)	(61,046		)
Net proceeds from issuance of preferred stock	96,388			—

9

Net Cash Provided by Financing Activities	268,116		345,233
Net Increase (Decrease) In Cash and Cash Equivalents	240,480		(149,789		)
Cash and Cash Equivalents at Beginning of Period	690,453		625,724
Cash and Cash Equivalents at End of Period	$	930,933	$	475,935
Supplemental Schedule of Non-cash Activities
Acquisition of real estate in settlement of loans	$	6,023	$	13,066
Common stock issued in acquisitions	$	—	$	214,659
Supplemental Disclosures
Cash paid for interest on deposits and borrowings, net of acquired	$	235,888	$	137,727
Cash paid for income taxes	$	57,287	$	34,968
Cash received from income tax refunds	$	178,288	$	364

The accompanying Notes are an integral part of these Consolidated Financial Statements.

10

IBERIABANK CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements

NOTE 1 - BASIS OF PRESENTATION

IBERIABANK Corporation is a financial holding company based in Lafayette, Louisiana. The accompanying unaudited consolidated financial statements include the accounts of IBERIABANK Corporation and its consolidated subsidiaries (the "Company"). Through its subsidiaries, the Company provides a full range of commercial and consumer banking services, including private banking, small business, wealth and trust management, retail brokerage, mortgage, commercial leasing and equipment financing, and title insurance services through locations in Louisiana, Arkansas, Tennessee, Alabama, Texas, Florida, Georgia, South Carolina, North Carolina, Mississippi, Missouri, and New York.

The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all information and notes necessary for complete financial statements in accordance with GAAP. In the opinion of management, the accompanying unaudited consolidated financial statements contain all the significant adjustments, consisting of normal and recurring items, considered necessary for fair presentation. These interim financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes in the Annual Report on Form 10-K for the year ended December 31, 2018. Operating results for the interim period are not necessarily indicative of the results that may be expected for the full year.

All significant intercompany balances and transactions have been eliminated in consolidation. Certain amounts reported in prior periods have been reclassified to conform to the current period presentation. See the Glossary of Defined Terms included in this Report for terms used herein.

11

NOTE 2 - RECENT ACCOUNTING PRONOUNCEMENTS

Pronouncements adopted during the nine months ended September 30, 2019:

ASU No. 2016-02, ASU No. 2018-11, ASU No. 2018-20, and ASU 2019-01

In February 2016, the FASB issued ASU No. 2016-02, Leases (ASC 842) which requires lessees to recognize ROU assets and lease liabilities on the balance sheet for most leases, including operating leases. The lessor accounting model was relatively unchanged by this ASU. Additional quantitative and qualitative disclosures are also required. During 2018 and early 2019, the FASB issued ASU No. 2018-11, Targeted Improvements, ASU No. 2018-20, Narrow-Scope Improvements for Lessors, and ASU No. 2019-01, Codification Improvements, which clarified certain implementation issues, provided an additional optional transition method and clarified the disclosure requirements during the period of adopting ASC 842, among others.

The Company adopted ASU No. 2016-02 and the related ASUs discussed above effective January 1, 2019 using the optional transition method. The Company elected the package of practical expedients that does not require the reassessment of whether expired or existing contracts contain leases, the reassessment of the lease classification for any expired or existing leases, or the reassessment of initial direct costs for existing leases. Additionally, the Company did not elect the hindsight practical expedient.

The Company conducted a review of all existing lease contracts and service contracts which might contain embedded leases. Some of the Company’s leases contain variable lease payments, the majority of which depend on an index or rate, such as the Consumer Price Index. At transition, the present value of variable payments was based on the index or rate as of January 1, 2019. To determine the present value of lease payments at transition, the Company applied a portfolio approach utilizing an FHLB Advance rate based on the weighted average remaining term of the Company’s existing leases as of January 1, 2019. As a result of adopting ASC 842, the Company established an ROU asset and a lease liability as of January 1, 2019 of $94.2 million and $118.9 million, respectively. Additionally, as part of the adoption of ASC 842, $24.7 million in pre-existing liabilities were reclassified to the ROU asset on January 1, 2019. This resulted in a gross-up of the balance sheet of $94.2 million as a result of recognizing lease liabilities and corresponding right-of-use assets for operating leases. The adoption of ASC 842 also required the recognition of previously deferred gains on sale-leaseback transactions which resulted in an insignificant increase to retained earnings on January 1, 2019. The related impact on the Company’s regulatory capital ratios was not significant. The Company does not expect material changes to the recognition of lease expense in future periods as a result of the adoption of ASC 842. See Note 8, Leases, for additional disclosures required by ASC 842.

ASU No. 2018-16

In October 2018, the FASB released ASU No. 2018-16, Derivatives and Hedging (ASC 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes, which permits the use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under ASC 815 in addition to the interest rates on direct Treasury obligations of the UST, the LIBOR swap rate, the OIS Rate based on the Fed Funds Effective Rate, and the SIFMA Municipal Swap Rate.

The required effective date of this ASU was dependent upon when an entity adopted the provisions of ASU No. 2017-12. The Company adopted ASU No. 2018-16 effective January 1, 2019 on a prospective basis for qualifying new or redesignated hedging relations as ASU No. 2017-12 had previously been adopted on January 1, 2018. The implementation of this ASU did not have a significant impact on the Company’s consolidated financial statements.

ASU No. 2017-08

In March 2017, the FASB issued ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities, which shortens the amortization period for callable debt securities held at a premium to the earliest call date instead of the maturity date. The amendments do not require an accounting change for securities held at a discount, which will continue to be amortized to the maturity date.

The Company adopted ASU No. 2017-08 effective January 1, 2019. The adoption of the ASU did not have a material impact to the Company’s consolidated financial statements.

12

Pronouncements issued but not yet adopted:

ASU No. 2016-13, ASU No. 2019-04 (portion related to ASC 326), and ASU No. 2019-05

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (ASC 326): Measurement of Credit Losses on Financial Instruments. The guidance introduces an impairment model that is based on expected credit losses (ECL), rather than incurred losses, to estimate credit losses on certain types of financial instruments such as loans and held-to-maturity securities, including certain off-balance sheet financial instruments such as loan commitments. The measurement of ECL should consider historical information, current information, and reasonable and supportable forecasts, including estimates of prepayments, over the contractual term. Financial instruments with similar risk characteristics must be grouped together when estimating ECL. The ASU also expands credit quality disclosures.

Additionally, ASU No. 2016-13 amends the current AFS security impairment model for debt securities. The new model will require an estimate of ECL when the fair value is below the amortized cost of the asset. The credit-related impairment (and subsequent recoveries) are recognized as an allowance on the balance sheet with a corresponding adjustment to the income statement. Non-credit related losses will continue to be recognized through OCI.

In addition, ASU No. 2016-13 provides for a simplified accounting model for purchased financial assets with a more-than-insignificant amount of credit deterioration since their origination. The initial estimate of expected credit losses would be recognized through an ALLL with an offset (i.e., increase) to the cost basis of the related financial asset at acquisition.

ASU No. 2016-13 will be effective for fiscal years beginning after December 15, 2019, including interim periods. This ASU will be applied through a modified-retrospective approach, resulting in a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. A prospective transition approach is required for debt securities for which OTTI had been recognized before the effective date. Amounts previously recognized in AOCI as of the date of adoption that relate to improvements in cash flows expected to be collected should continue to be accreted into income over the remaining life of the asset. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption should be recorded in earnings when received.

During 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Financial Instruments-Credit Losses (ASC 326), Derivatives and Hedging (ASC 815), and Financial Instruments (ASC 825), which clarified the scope of ASU No. 2016-13 and addressed various issues, including accrued interest receivable balances, recoveries, variable interest rates and prepayments, and ASU No. 2019-05, Financial Instruments-Credit Losses (Topic 326): Targeted Transition Relief, which clarified certain implementation issues. The effective date for the portion of ASU No. 2019-04 related to credit losses and ASU No. 2019-05 are the same as ASU No. 2016-13.

The Company’s cross-function implementation team and engaged third-party consultants have jointly developed and continue to execute the project plan and provide implementation oversight. Significant progress has been made in implementation efforts, including model development and validation, fulfillment of additional data needs for new disclosure and reporting requirements, and drafting of accounting policies. In October 2019, user acceptance testing was completed and the Company began concurrent model runs. Implementation efforts will continue through the remainder of 2019, including continued process refinement, documentation enhancement, and finalization of the internal control framework.

Based on a preliminary analysis performed in the third quarter of 2019 and forecasts of macroeconomic conditions and exposures as of September 30, 2019, the transition adjustment on January 1, 2020 is estimated to generate an ACL to loans ratio of 1.00% to 1.20%. The Company currently intends to use a blend of multiple economic forecasts to estimate expected credit losses over a one to two year reasonable and supportable forecast period and then revert to longer term historical loss experience to arrive at lifetime expected credit losses. The estimated increase in ACL is primarily due to required increases for residential mortgage and home equity loans to include the requirement to estimate lifetime expected credit losses and the remaining length of time to maturity for these loans as well as an increase in reserves on acquired non-impaired loans which had low reserve levels under the previous accounting guidance.

While these ASUs are expected to increase ACL, they do not change the overall credit risk in the Company's loan and lease portfolios or the ultimate losses therein. The transition adjustment to increase ACL will primarily result in a decrease to shareholders' equity, net of income taxes, on January 1, 2020. The ultimate impact of the adoption of these ASUs will depend on the composition of the loan, lease and securities portfolios, finalization of credit loss models, and macroeconomic conditions and forecasts at the adoption date.

13

ASU No. 2018-13

In August 2018, the FASB released ASU No. 2018-13, Fair Value Measurement (ASC 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, which eliminates, adds and modifies certain disclosure requirements for fair value measurements. The ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods, with early adoption permitted.

The Company is currently evaluating the impact of the ASU. While adoption of this ASU will result in changes to existing disclosures, it will not have an impact on the Company’s financial position or results of operations.

ASU No. 2018-17

In October 2018, the FASB released ASU No. 2018-17, Consolidation (ASC 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities, which improves the consistency of the application of the variable interest entity (VIE) related party guidance for common control arrangements. This ASU requires reporting entities to consider indirect interests held through related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety (as currently required in GAAP) when determining whether a decision-making fee is a variable interest. ASU No. 2018-17 will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and early adoption is permitted. The guidance will be applied retrospectively with a cumulative-effect adjustment to retained earnings at the beginning of the earliest period presented.

The Company is currently evaluating the impact of the ASU on the Company’s consolidated financial statements.

ASU No. 2019-04

In April 2019, the FASB released ASU No. 2019-04, Codification Improvements to Financial Instruments-Credit Losses (ASC 326), Derivatives and Hedging (ASC 815), and Financial Instruments (ASC 825). The amendments in the ASU improve the Codification by eliminating inconsistencies and providing clarifications. The amendments related to the credit losses standard are discussed above under ASU 2016-13.

With respect to hedge accounting, the ASU addresses partial-term fair value hedges, fair value hedge basis adjustments, and certain transition requirements, among other things. For recognizing and measuring financial instruments, the ASU addresses the scope of the guidance, the requirement for re-measurement under ASC 820 when using the measurement alternative, certain disclosure requirements and which equity securities have to be re-measured at historical exchange rates.

Since the Company early adopted the guidance in ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities in 2018, the amended hedge accounting guidance in ASU No. 2019-04 will be effective as of the beginning of the first annual reporting period beginning after April 25, 2019 with early adoption permitted on any date after the issuance of this ASU.

The Company is currently evaluating the impact of the ASU on the Company’s consolidated financial statements.

14

NOTE 3 – INVESTMENT SECURITIES

The amortized cost and fair values of investment securities, with gross unrealized gains and losses, consisted of the following:

	September 30, 2019
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	39,887	$	294	$	—		$	40,181
Obligations of state and political subdivisions	166,034		7,333		—			173,367
Mortgage-backed securities:
Residential agency	3,135,619		31,354		(3,930		)	3,163,043
Commercial agency	732,669		24,239		(179		)	756,729
Other securities	101,324		3,543		(105		)	104,762
Total securities available for sale	$	4,175,533	$	66,763	$	(4,214	)	$	4,238,082
Securities held to maturity:
Obligations of state and political subdivisions	$	167,888	$	7,725	$	—		$	175,613
Mortgage-backed securities:
Residential agency	17,119		50		(196		)	16,973
Total securities held to maturity	$	185,007	$	7,775	$	(196	)	$	192,586

	December 31, 2018
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	995	$	3	$	—		$	998
Obligations of state and political subdivisions	177,566		2,045		(723		)	178,888
Mortgage-backed securities:
Residential agency	3,837,584		8,886		(57,073		)	3,789,397
Commercial agency	730,148		2,363		(14,799		)	717,712
Other securities	97,020		351		(787		)	96,584
Total securities available for sale	$	4,843,313	$	13,648	$	(73,382	)	$	4,783,579
Securities held to maturity:
Obligations of state and political subdivisions	$	188,684	$	309	$	(2,497	)	$	186,496
Mortgage-backed securities:
Residential agency	18,762		30		(1,011		)	17,781
Total securities held to maturity	$	207,446	$	339	$	(3,508	)	$	204,277

Securities with carrying values of $2.1 billion and $2.4 billion were pledged to support repurchase transactions, public funds deposits, and certain long-term borrowings at September 30, 2019 and December 31, 2018, respectively.

15

Information pertaining to securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, was as follows:

	September 30, 2019
	Less Than Twelve Months					Twelve Months or More					Total
(in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
Mortgage-backed securities:
Residential agency	$	(1,829	)	$	447,333	$	(2,101	)	$	299,396	$	(3,930	)	$	746,729
Commercial agency	(83		)	8,961		(96		)	10,994		(179		)	19,955
Other securities	(6		)	13,368		(99		)	4,802		(105		)	18,170
Total securities available for sale	$	(1,918	)	$	469,662	$	(2,296	)	$	315,192	$	(4,214	)	$	784,854
Securities held to maturity:
Mortgage-backed securities:
Residential agency	$	(2	)	$	924	$	(194	)	$	9,551	$	(196	)	$	10,475
Total securities held to maturity	$	(2	)	$	924	$	(194	)	$	9,551	$	(196	)	$	10,475

	December 31, 2018
	Less Than Twelve Months					Twelve Months or More					Total
(in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
Obligations of state and political subdivisions	$	(9	)	$	4,112	$	(714	)	$	30,268	$	(723	)	$	34,380
Mortgage-backed securities:
Residential agency	(816		)	197,057		(56,257		)	2,193,862		(57,073		)	2,390,919
Commercial agency	(43		)	18,190		(14,756		)	483,565		(14,799		)	501,755
Other securities	(94		)	18,025		(693		)	32,577		(787		)	50,602
Total securities available for sale	$	(962	)	$	237,384	$	(72,420	)	$	2,740,272	$	(73,382	)	$	2,977,656
Securities held to maturity:
Obligations of state and political subdivisions	$	(3	)	$	2,059	$	(2,494	)	$	151,699	$	(2,497	)	$	153,758
Mortgage-backed securities:
Residential agency	—			—		(1,011		)	17,478		(1,011		)	17,478
Total securities held to maturity	$	(3	)	$	2,059	$	(3,505	)	$	169,177	$	(3,508	)	$	171,236

16

The Company held certain investment securities where amortized cost exceeded fair value, resulting in unrealized loss positions, as shown in the tables above. Management evaluates securities for other-than-temporary impairment on at least a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Impairment is considered to be other-than-temporary if the Company (1) intends to sell the security, (2) more likely than not will be required to sell the security before recovering its cost, or (3) does not expect to recover the security's entire amortized cost basis. As of September 30, 2019, the Company did not intend to sell any of these securities, did not expect to be required to sell these securities, and expected to recover the entire amortized cost of all these securities.

At September 30, 2019, 107 debt securities had unrealized losses of 0.55% of the securities’ amortized cost basis. At December 31, 2018, 488 debt securities had unrealized losses of 2.38% of the securities’ amortized cost basis. The unrealized losses for each of the securities related to market interest rate changes and not credit concerns of the issuers. Additional information on securities that were in a continuous loss position for over twelve months at September 30, 2019 and December 31, 2018 is presented in the following table.

(in thousands)	September 30, 2019		December 31, 2018
Number of securities
Mortgage-backed securities:
Residential agency	66		302
Commercial agency	6		72
Obligations of state and political subdivisions	—		60
Other securities	4		7
	76		441
Amortized Cost Basis
Mortgage-backed securities:
Residential agency	$	311,242	$	2,268,608
Commercial agency	11,090		498,321
Obligations of state and political subdivisions	—		185,175
Other securities	4,901		33,270
	$	327,233	$	2,985,374
Unrealized Loss
Mortgage-backed securities:
Residential agency	$	2,295	$	57,268
Commercial agency	96		14,756
Obligations of state and political subdivisions	—		3,208
Other securities	99		693
	$	2,490	$	75,925

The amortized cost and estimated fair value of investment securities by maturity at September 30, 2019 are presented in the following table. Securities are classified according to their contractual maturities without consideration of principal amortization, potential prepayments or call options. Accordingly, actual maturities may differ from contractual maturities. Weighted average yields are calculated on the basis of the yield to maturity based on the amortized cost of each security.

	Securities Available for Sale						Securities Held to Maturity
(in thousands)	Weighted Average Yield		Amortized Cost		Estimated Fair Value		Weighted Average Yield		Amortized Cost		Estimated Fair Value
Within one year or less	2.55	%	$	10,720	$	10,787	2.33	%	$	948	$	949
One through five years	2.62		123,447		125,721		2.63		4,483		4,518
After five through ten years	2.76		760,325		786,040		2.35		43,085		44,653
Over ten years	2.67		3,281,041		3,315,534		2.58		136,491		142,466
	2.68	%	$	4,175,533	$	4,238,082	2.53	%	$	185,007	$	192,586

17

The following is a summary of realized gains and losses from the sale of securities classified as available for sale. Gains or losses on securities sold are recorded on the trade date, using the specific identification method.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2019		2018		2019			2018
Realized gains	$	27	$	—	$	1,324		$	39
Realized losses	—		—		(2,311		)	(95		)
	$	27	$	—	$	(987	)	$	(56	)

In addition to the gains above, the Company realized certain gains on calls of securities held to maturity that were not significant to the consolidated financial statements.

Other Equity Securities

The Company accounts for the following securities at cost less impairment plus or minus any observable price changes, which approximates fair value, with the exception of CRA and Community Development Investment Funds, which are recorded at fair value. Other equity securities, which are presented in other assets on the consolidated balance sheets, were as follows:

(in thousands)	September 30, 2019		December 31, 2018
Federal Home Loan Bank stock	$	87,156	$	95,213
Federal Reserve Bank stock	85,630		85,630
CRA and Community Development Investment Funds	1,962		1,884
Other investments	21,023		9,709
	$	195,771	$	192,436

18

NOTE 4 – LOANS AND LEASES

Loans and leases by portfolio segment and class consisted of the following for the periods indicated:

(in thousands)	September 30, 2019		December 31, 2018
Commercial loans and leases:
Real estate - construction	$	1,330,014	$	1,196,366
Real estate - owner-occupied	2,468,061		2,395,822
Real estate - non-owner-occupied	6,011,681		5,796,117
Commercial and industrial (1)	6,490,125		5,737,017
Total commercial loans and leases	16,299,881		15,125,322
Residential mortgage loans	4,649,745		4,359,156
Consumer and other loans:
Home equity	2,053,588		2,304,694
Other	673,323		730,643
Total consumer and other loans	2,726,911		3,035,337
Total loans and leases	$	23,676,537	$	22,519,815

⁽¹⁾  Includes equipment financing leases

Net deferred loan origination fees were $37.8 million and $30.2 million at September 30, 2019 and December 31, 2018, respectively. Total net discount on the Company's loans was $97.8 million and $136.8 million at September 30, 2019 and December 31, 2018, respectively, of which $61.8 million and $81.6 million was related to non-impaired loans.

In addition to loans issued in the normal course of business, the Company considers overdrafts on customer deposit accounts to be loans and reclassifies these overdrafts as loans in its consolidated balance sheets. At September 30, 2019 and December 31, 2018, overdrafts of $7.0 million and $9.2 million, respectively, had been reclassified to loans.

Loans with carrying values of $8.5 billion and $7.6 billion were pledged as collateral for borrowings at September 30, 2019 and December 31, 2018, respectively.

19

Aging Analysis

The following tables provide an analysis of the aging of loans and leases as of September 30, 2019 and December 31, 2018. Past due and non-accrual loan amounts exclude acquired impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans. For additional information on the determination of past due status and the Company's policies for recording payments received, placing loans and leases on non-accrual status, and the resumption of interest accrual on non-accruing loans and leases, see Note 1, Summary of Significant Accounting Policies, in the 2018 10-K.

	September 30, 2019
	Accruing
(in thousands)	Current or Less Than 30 days Past Due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual (1)		Acquired Impaired		Total
Real estate- construction	$	1,307,793	$	3,851	$	—	$	—	$	3,851	$	1,381	$	16,989	$	1,330,014
Real estate- owner-occupied	2,389,631		2,294		1,031		—		3,325		17,158		57,947		2,468,061
Real estate- non-owner-occupied	5,930,480		2,093		2,672		426		5,191		20,201		55,809		6,011,681
Commercial and industrial	6,417,203		3,614		1,769		2,696		8,079		43,494		21,349		6,490,125
Residential mortgage	4,502,109		1,252		13,463		1,668		16,383		50,439		80,814		4,649,745
Consumer - home equity	1,967,342		10,448		6,792		—		17,240		18,311		50,695		2,053,588
Consumer - other	663,561		2,839		2,500		—		5,339		2,129		2,294		673,323
Total	$	23,178,119	$	26,391	$	28,227	$	4,790	$	59,408	$	153,113	$	285,897	$	23,676,537

⁽¹⁾  Of the total non-accrual loans at September 30, 2019, $10.7 million were past due 30-59 days, $4.5 million were past due 60-89 days, and $73.4 million were past due more than 90 days.

	December 31, 2018
	Accruing
(in thousands)	Current or Less Than 30 days Past Due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual (1)		Acquired Impaired		Total
Real estate- construction	$	1,167,795	$	1,054	$	—	$	—	$	1,054	$	1,094	$	26,423	$	1,196,366
Real estate- owner-occupied	2,305,743		7,167		—		—		7,167		10,260		72,652		2,395,822
Real estate- non-owner-occupied	5,703,131		7,473		360		—		7,833		15,898		69,255		5,796,117
Commercial and industrial	5,645,304		5,139		1,320		553		7,012		57,860		26,841		5,737,017
Residential mortgage	4,218,146		2,768		13,063		1,575		17,406		30,396		93,208		4,359,156
Consumer - home equity	2,200,517		10,283		2,409		—		12,692		18,830		72,655		2,304,694
Consumer - other	719,122		4,695		1,601		—		6,296		2,846		2,379		730,643
Total	$	21,959,758	$	38,579	$	18,753	$	2,128	$	59,460	$	137,184	$	363,413	$	22,519,815

⁽¹⁾  Of the total non-accrual loans at December 31, 2018, $7.0 million were past due 30-59 days, $3.7 million were past due 60-89 days, and $66.9 million were past due more than 90 days.

20

Acquired Loans

The Company acquired certain loans from Sabadell United to customers with addresses outside of the United States. Foreign loans, denominated in U.S. dollars, totaled $194.6 million and $202.6 million at September 30, 2019 and December 31, 2018, respectively.

The following is a summary of changes in the accretable difference for all loans accounted for under ASC 310-30 during the nine months ended September 30:

(in thousands)	2019			2018
Balance at beginning of period	$	133,342		$	152,623
Additions	—			2,371
Transfers from non-accretable difference to accretable yield	(1,740		)	(4		)
Accretion	(29,506		)	(37,115		)
Changes in expected cash flows not affecting non-accretable differences (1)	(2,927		)	21,092
Balance at end of period	$	99,169		$	138,967

⁽¹⁾  Includes changes in cash flows expected to be collected due to the impact of changes in actual or expected timing of liquidation events, modifications, changes in interest rates and changes in prepayment assumptions.

Troubled Debt Restructurings

Information about the Company’s TDRs at September 30, 2019 and 2018 is presented in the following tables. Modifications of loans that are accounted for within a pool under ASC Topic 310-30 are excluded as TDRs. Accordingly, such modifications do not result in the removal of those loans from the pool, even if the modification of those loans would otherwise be considered a TDR. As a result, all such acquired loans that would otherwise meet the criteria for classification as a TDR are excluded from the tables below.

TDRs totaling $61.0 million and $46.0 million occurred during the nine months ended September 30, 2019 and 2018, respectively, through modification of the original loan terms.

The following table provides information on how the TDRs were modified during the periods indicated:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Extended maturities	$	2,476	$	3,658	$	13,097	$	10,020
Maturity and interest rate adjustment	288		267		715		368
Movement to or extension of interest-rate only payments	48		—		1,827		48
Interest rate adjustment	—		—		71		101
Forbearance	22,202		802		25,068		14,386
Other concession(s) (1)	3,724		1,810		20,250		21,031
Total	$	28,738	$	6,537	$	61,028	$	45,954

⁽¹⁾  Other concessions may include covenant waivers, forgiveness of principal or interest associated with a customer bankruptcy, or a combination of any of the above concessions.

21

Of the $61.0 million of TDRs occurring during the nine months ended September 30, 2019, $25.5 million were on accrual status and $35.5 million were on non-accrual status. Of the $46.0 million of TDRs occurring during the nine months ended September 30 2018, $20.2 million were on accrual status and $25.8 million were on non-accrual status. The following table presents the end of period balance for loans modified in a TDR during the periods indicated:

	Three Months Ended September 30,
	2019					2018
(in thousands, except number of loans)	Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Real estate- construction	1	$	6,331	$	7,602	—	$	—	$	—
Real estate- owner-occupied	7	8,936		8,691		1	2,312		2,312
Real estate- non-owner-occupied	6	1,553		1,210		6	1,818		1,790
Commercial and industrial	14	1,954		1,952		9	829		804
Residential mortgage	10	7,210		6,870		3	257		255
Consumer - home equity	19	2,375		2,237		15	1,152		1,124
Consumer - other	17	202		176		11	352		252
Total	74	$	28,561	$	28,738	45	$	6,720	$	6,537

	Nine Months Ended September 30,
	2019					2018
(in thousands, except number of loans)	Number of Loans	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment		Number of Loans	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment
Real estate- construction	1	$	6,331	$	7,602	1	$	1,950	$	976
Real estate- owner-occupied	11	10,153		9,869		8	15,233		13,373
Real estate- non-owner-occupied	16	7,931		7,233		13	3,228		3,064
Commercial and industrial	48	29,156		19,594		32	32,827		22,769
Residential mortgage	28	8,897		8,524		9	898		837
Consumer - home equity	69	7,629		7,268		47	4,130		4,047
Consumer - other	63	1,065		938		53	1,056		888
Total	236	$	71,162	$	61,028	163	$	59,322	$	45,954

22

Information detailing TDRs that defaulted during the three-month and nine-month periods ended September 30, 2019 and 2018, and were modified in the previous twelve months (i.e., the twelve months prior to the default) is presented in the following tables. The Company has defined a default as any loan with a payment that is currently past due greater than 30 days, or was past due greater than 30 days at any point during the respective periods, or since the date of modification, whichever is shorter.

	Three Months Ended September 30,
	2019			2018
(in thousands, except number of loans)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Real estate- owner-occupied	—	$	—	1	$	929
Real estate- non-owner-occupied	2	2,460		1	7
Commercial and industrial	8	1,429		2	127
Residential mortgage	1	101		—	—
Consumer - home equity	1	64		4	380
Consumer - other	5	57		6	86
Total	17	$	4,111	14	$	1,529

	Nine Months Ended September 30,
	2019			2018
(in thousands, except number of loans)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Real estate- owner-occupied	6	$	1,225	6	$	10,101
Real estate- non-owner-occupied	16	5,176		6	1,084
Commercial and industrial	25	6,859		12	3,632
Residential mortgage	18	1,394		8	912
Consumer - home equity	21	1,873		17	1,978
Consumer - other	38	557		39	488
Total	124	$	17,084	88	$	18,195

23

NOTE 5 – ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY

Allowance for Credit Losses Activity

A summary of changes in the allowance for credit losses for the nine months ended September 30 was as follows:

(in thousands)	2019			2018
Allowance for loan and lease losses at beginning of period	$	140,571		$	140,891
Provision for loan and lease losses	32,190			26,678
Transfer of balance to OREO and other	(2,696		)	(5,709		)
Charge-offs	(29,971		)	(34,740		)
Recoveries	6,141			9,830
Allowance for loan and lease losses at end of period	$	146,235		$	136,950
Reserve for unfunded commitments at beginning of period	$	14,830		$	13,208
Balance created in acquisition accounting	—			900
Provision for unfunded lending commitments	1,314			613
Reserve for unfunded commitments at end of period	$	16,144		$	14,721
Allowance for credit losses at end of period	$	162,379		$	151,671

A summary of changes in the allowance for credit losses, by loan portfolio type, for the nine months ended September 30 was as follows:

	2019
(in thousands)	Commercial Real Estate			Commercial and Industrial			Residential Mortgage			Consumer and Other			Total
Allowance for loan and lease losses at beginning of period	$	51,806		$	54,096		$	12,998		$	21,671		$	140,571
Provision for (Reversal of) loan and lease losses	9,205			15,819			(152		)	7,318			32,190
Transfer of balance to OREO and other	(309		)	236			(2,879		)	256			(2,696		)
Charge-offs	(2,179		)	(17,799		)	(219		)	(9,774		)	(29,971		)
Recoveries	474			3,163			169			2,335			6,141
Allowance for loan and lease losses at end of period	$	58,997		$	55,515		$	9,917		$	21,806		$	146,235
Reserve for unfunded commitments at beginning of period	$	4,869		$	6,198		$	866		$	2,897		$	14,830
Provision for (Reversal of) unfunded commitments	357			493			(216		)	680			1,314
Reserve for unfunded commitments at end of period	$	5,226		$	6,691		$	650		$	3,577		$	16,144
Allowance on loans individually evaluated for impairment	$	2,721		$	7,974		$	281		$	3,039		$	14,015
Allowance on loans collectively evaluated for impairment	50,809			45,990			5,393			18,630			120,822
Allowance on loans acquired with deteriorated credit quality	5,467			1,551			4,243			137			11,398
Loans and leases, net of unearned income:
Balance at end of period	$	9,809,756		$	6,490,125		$	4,649,745		$	2,726,911		$	23,676,537
Balance at end of period individually evaluated for impairment	73,715			51,350			42,423			37,907			205,395
Balance at end of period collectively evaluated for impairment	9,605,296			6,417,426			4,526,508			2,636,015			23,185,245
Balance at end of period acquired with deteriorated credit quality	130,745			21,349			80,814			52,989			285,897

24

	2018
(in thousands)	Commercial Real Estate			Commercial and Industrial			Residential Mortgage			Consumer and Other			Total
Allowance for loan and lease losses at beginning of period	$	54,201		$	53,916		$	9,117		$	23,657		$	140,891
Provision for (Reversal of) loan and lease losses	(4,020		)	20,372			2,318			8,008			26,678
Transfer of balance to OREO and other	(1,556		)	(814		)	(45		)	(3,294		)	(5,709		)
Charge-offs	(1,281		)	(22,447		)	(365		)	(10,647		)	(34,740		)
Recoveries	1,019			5,665			53			3,093			9,830
Allowance for loan and lease losses at end of period	$	48,363		$	56,692		$	11,078		$	20,817		$	136,950
Reserve for unfunded commitments at beginning of period	$	4,531		$	5,309		$	555		$	2,813		$	13,208
Balance created in acquisition accounting	129			81			—			690			900
Provision for (Reversal of) unfunded commitments	(134		)	169			246			332			613
Reserve for unfunded commitments at end of period	$	4,526		$	5,559		$	801		$	3,835		$	14,721
Allowance on loans individually evaluated for impairment	$	2,650		$	10,471		$	154		$	2,973		$	16,248
Allowance on loans collectively evaluated for impairment	40,519			44,727			5,063			17,661			107,970
Allowance on loans acquired with deteriorated credit quality	5,194			1,494			5,861			183			12,732
Loans and leases, net of unearned income:
Balance at end of period	$	9,381,883		$	5,581,040		$	4,300,163		$	3,080,820		$	22,343,906
Balance at end of period individually evaluated for impairment	73,469			75,625			6,230			33,863			189,187
Balance at end of period collectively evaluated for impairment	9,126,653			5,478,377			4,174,524			2,970,301			21,749,855
Balance at end of period acquired with deteriorated credit quality	181,761			27,038			119,409			76,656			404,864

Portfolio Segment Risk Factors

Commercial real estate loans include loans to commercial customers for medium-term financing of land and buildings or for land development or construction of a building. These loans are repaid from revenues through operations of the businesses, rents of properties, sales of properties and refinances. Commercial and industrial loans and leases represent loans to commercial customers to finance general working capital needs, equipment purchases and leases and other projects where repayment is derived from cash flows resulting from business operations. The Company originates commercial and industrial loans on a secured and, to a lesser extent, unsecured basis.

Residential mortgage loans consist of loans to consumers to finance a primary residence. The vast majority of the residential mortgage loan portfolio is comprised of non-conforming 1-4 family mortgage loans secured by properties located in the Company's market areas and originated under terms and documentation that permit their sale in a secondary market.

Consumer loans are offered by the Company in order to provide a full range of retail financial services to its customers and include home equity, credit card and other direct consumer installment loans. The Company originates substantially all of its consumer loans in its primary market areas. Loans in the consumer segment are sensitive to unemployment and other key consumer economic measures.

Credit Quality Indicators

For commercial loans and leases, the Company utilizes regulatory classification ratings to monitor credit quality. Loans with a "pass" rating are those that the Company believes will be fully repaid in accordance with the contractual loan terms. Commercial loans and leases that are "criticized" are those that have some weakness or potential weakness that indicate an increased probability of future loss. "Criticized" loans are grouped into three categories: "special mention", "substandard", and "doubtful". Special mention loans have potential weaknesses that, if left uncorrected, may result in deterioration of the Company's credit position at some future date.

25

Substandard commercial loans have well-defined weaknesses and are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Doubtful commercial loans have the same weaknesses as substandard loans with the added characteristics that the probability of loss is high and collection of the full amount is improbable. Substandard and doubtful loans are collectively referred to as "classified" loans. For residential mortgage loans and consumer loans, the Company primarily uses the loan's payment and delinquency status to monitor credit quality. These credit quality indicators are continually updated and monitored.

The recorded investment in loans and leases by credit quality indicator is presented in the following tables. Asset risk classifications for commercial loans and leases reflect the classification as of September 30, 2019 and December 31, 2018. Credit quality information in the tables below includes total loans acquired (including acquired impaired loans) at the net loan balance, after the application of premiums and discounts. Loan premiums and discounts represent the adjustment of acquired loans to fair value at the acquisition date, as adjusted for income accretion and changes in cash flow estimates in subsequent periods.

	September 30, 2019												December 31, 2018
(in thousands)	Pass		Special Mention		Sub- standard		Doubtful		Loss		Total		Pass		Special Mention		Sub- standard		Doubtful		Total
Real estate - construction	$	1,300,847	$	19,631	$	9,536	$	—	$	—	$	1,330,014	$	1,182,554	$	1,062	$	12,740	$	10	$	1,196,366
Real estate - owner-occupied	2,409,221		19,786		38,214		840		—		2,468,061		2,328,999		25,526		41,297		—		2,395,822
Real estate - non-owner-occupied	5,926,537		47,494		37,193		447		10		6,011,681		5,687,963		78,009		26,512		3,633		5,796,117
Commercial and industrial	6,340,738		71,431		63,303		14,653		—		6,490,125		5,586,482		52,632		73,853		24,050		5,737,017
Total	$	15,977,343	$	158,342	$	148,246	$	15,940	$	10	$	16,299,881	$	14,785,998	$	157,229	$	154,402	$	27,693	$	15,125,322

	September 30, 2019						December 31, 2018
(in thousands)	Current		30+ Days Past Due		Total		Current		30+ Days Past Due		Total
Residential mortgage	$	4,567,633	$	82,112	$	4,649,745	$	4,290,152	$	69,004	$	4,359,156
Consumer - home equity	2,011,913		41,675		2,053,588		2,258,659		46,035		2,304,694
Consumer - other	665,702		7,621		673,323		721,231		9,412		730,643
Total	$	7,245,248	$	131,408	$	7,376,656	$	7,270,042	$	124,451	$	7,394,493

26

Impaired Loans

Information on the Company’s investment in impaired loans, which include all TDRs and all other non-accrual loans evaluated or measured individually for impairment for purposes of determining the ALLL, is presented in the following tables as of and for the periods indicated.

	September 30, 2019							December 31, 2018
	Unpaid Principal Balance		Recorded Investment		Related Allowance			Unpaid Principal Balance		Recorded Investment		Related Allowance
(in thousands)
With no related allowance recorded:
Real estate - construction	$	9,540	$	8,531	$	—		$	10,261	$	9,262	$	—
Real estate - owner-occupied	33,985		33,590		—			25,037		19,044		—
Real estate - non-owner-occupied	23,964		22,652		—			15,265		14,288		—
Commercial and industrial	21,813		17,771		—			55,554		43,886		—
Residential mortgage	36,182		35,089		—			1,244		1,221		—
Consumer - home equity	4,736		4,734		—			4,183		4,176		—
With an allowance recorded:
Real estate - construction	98		85		(1		)	228		140		(11		)
Real estate - owner-occupied	5,135		4,921		(2,529		)	5,032		4,773		(520		)
Real estate - non-owner-occupied	4,149		3,936		(191		)	6,445		6,398		(105		)
Commercial and industrial	45,409		33,579		(7,974		)	46,387		27,915		(12,646		)
Residential mortgage	8,010		7,334		(281		)	5,870		5,358		(145		)
Consumer - home equity	29,773		29,124		(2,577		)	29,284		28,818		(2,427		)
Consumer - other	4,308		4,049		(462		)	4,956		4,446		(488		)
Total	$	227,102	$	205,395	$	(14,015	)	$	209,746	$	169,725	$	(16,342	)
Total commercial loans and leases	$	144,093	$	125,065	$	(10,695	)	$	164,209	$	125,706	$	(13,282	)
Total residential mortgage loans	44,192		42,423		(281		)	7,114		6,579		(145		)
Total consumer and other loans	38,817		37,907		(3,039		)	38,423		37,440		(2,915		)

27

	Three Months Ended September 30, 2019				Three Months Ended September 30, 2018				Nine Months Ended September 30, 2019				Nine Months Ended September 30, 2018
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
(in thousands)
With no related allowance recorded:
Real estate - construction	$	7,333	$	82	$	10,806	$	164	$	7,145	$	242	$	10,371	$	460
Real estate - owner-occupied	33,895		355		34,118		209		34,437		1,235		34,505		903
Real estate - non-owner-occupied	22,794		72		22,091		249		22,910		301		22,988		746
Commercial and industrial	20,594		108		43,409		523		20,727		401		40,564		1,543
Residential mortgage	35,896		136		1,254		9		31,315		391		1,271		36
Consumer - home equity	4,736		47		705		2		4,613		137		708		16
With an allowance recorded:
Real estate - construction	87		—		148		—		93		—		151		1
Real estate - owner-occupied	4,952		10		4,006		83		5,050		113		4,044		102
Real estate - non-owner-occupied	4,155		46		2,398		20		4,090		137		2,442		76
Commercial and industrial	36,824		173		40,357		150		36,765		582		47,098		720
Residential mortgage	7,414		74		5,014		50		7,502		232		5,066		149
Consumer - home equity	29,200		298		28,577		305		28,982		890		27,905		892
Consumer - other	4,175		59		4,710		65		4,326		184		4,884		208
Total	$	212,055	$	1,460	$	197,593	$	1,829	$	207,955	$	4,845	$	201,997	$	5,852
Total commercial loans and leases	$	130,634	$	846	$	157,333	$	1,398	$	131,217	$	3,011	$	162,163	$	4,551
Total residential mortgage loans	43,310		210		6,268		59		38,817		623		6,337		185
Total consumer and other loans	38,111		404		33,992		372		37,921		1,211		33,497		1,116

As of September 30, 2019 and December 31, 2018, the Company was not committed to lend a material amount of additional funds to any customer whose loan was classified as impaired or as a TDR.

28

NOTE 6 – GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill

Changes to the carrying amount of goodwill by reporting unit for the nine months ended September 30, 2019, and the year ended December 31, 2018 are provided in the following table:

(in thousands)	IBERIABANK		Mortgage		LTC		Total
Balance, December 31, 2017	$	1,160,559	$	23,178	$	5,165	$	1,188,902
Goodwill acquired and adjustments during the year	43,251		—		3,380		46,631
Balance, December 31, 2018	$	1,203,810	$	23,178	$	8,545	$	1,235,533
Goodwill acquired and adjustments during the year	—		—		—		—
Balance, September 30, 2019	$	1,203,810	$	23,178	$	8,545	$	1,235,533

The goodwill acquired and adjustments made during 2018 were the result of the Sabadell United, Gibraltar, and SolomonParks acquisitions. There were no changes to goodwill during the nine months ended September 30, 2019.

The Company performed the required annual goodwill impairment test as of October 1, 2018. The Company’s annual impairment test did not indicate impairment in any of the Company’s reporting units as of the testing date. Following the testing date, management evaluated the events and changes that could indicate that goodwill might be impaired and concluded that a subsequent interim test was not necessary. The Company is currently in the process of performing its annual impairment test as of October 1, 2019.

Mortgage Servicing Rights

Mortgage servicing rights are recorded at the lower of cost or market value in other intangible assets on the Company's consolidated balance sheets and amortized over the remaining servicing life of the loans, with consideration given to prepayment assumptions. Mortgage servicing rights had the following carrying values as of the periods indicated:

	September 30, 2019										December 31, 2018
	Gross Carrying Amount		Valuation Allowance			Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Valuation Allowance		Accumulated Amortization			Net Carrying Amount
(in thousands)
Mortgage servicing rights	$	19,517	$	(195	)	$	(5,994	)	$	13,328	$	13,612	$	—	$	(4,806	)	$	8,806

Title Plant

The Company held title plant assets recorded in other intangible assets on the Company's consolidated balance sheets totaling $6.8 million at both September 30, 2019 and December 31, 2018. No events or changes in circumstances occurred during the nine months ended September 30, 2019 to suggest the carrying value of the title plant was not recoverable.

Intangible assets subject to amortization

Definite-lived intangible assets had the following carrying values included in other intangible assets on the Company’s consolidated balance sheets as of the periods indicated:

	September 30, 2019							December 31, 2018
(in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core deposit intangible assets	$	136,183	$	(77,256	)	$	58,927	$	136,183	$	(63,213	)	$	72,970
Customer relationship intangible asset	1,385		(1,363		)	22		1,385		(1,323		)	62
Non-compete agreement	206		(102		)	104		206		(72		)	134
Total	$	137,774	$	(78,721	)	$	59,053	$	137,774	$	(64,608	)	$	73,166

29

NOTE 7 – DERIVATIVE INSTRUMENTS AND OTHER HEDGING ACTIVITIES

The Company enters into derivative financial instruments to manage interest rate risk, exposures related to liquidity and credit risk, and to facilitate customer transactions. The primary types of derivatives utilized by the Company for its risk management strategies include interest rate swap agreements, interest rate collars, interest rate floors, foreign exchange contracts, interest rate lock commitments, forward sales commitments, written and purchased options, and credit derivatives. All derivative instruments are recognized on the consolidated balance sheets as other assets or other liabilities at fair value, regardless of whether a right of offset exists.

Cash flow hedge relationships mitigate exposure to the variability of future cash flows or other forecasted transactions. The Company enters into interest rate swap agreements in a cash flow hedge to convert forecasted variable interest payments to a fixed rate on its junior subordinated debt. In addition, the Company has entered into interest rate collars and interest rate floors and designated the instruments as cash flow hedges of the risk of fluctuations in interest rates, thereby reducing the Company's exposure to variability in cash flows from variable-rate loans.

For cash flow hedges, the effective and ineffective portions of the gain or loss related to the derivative instrument is initially reported as a component of other comprehensive income and subsequently reclassified into earnings when the forecasted transaction affects earnings or when the hedge is terminated. In applying hedge accounting for derivatives, the Company establishes and documents a method for assessing the effectiveness of the hedging derivative and a measurement approach for determining the ineffective aspect of the hedge upon the inception of the hedge.

For derivative instruments that are not designated as hedging instruments, changes in the fair value of the derivatives are recognized in earnings immediately.

Information pertaining to outstanding derivative instruments was as follows:

	Derivative Assets - Fair Value				Derivative Liabilities - Fair Value
(in thousands)	September 30, 2019		December 31, 2018		September 30, 2019		December 31, 2018
Derivatives designated as hedging instruments:
Interest rate contracts	$	23,339	$	3,469	$	—	$	—
Total derivatives designated as hedging instruments	$	23,339	$	3,469	$	—	$	—
Derivatives not designated as hedging instruments:
Interest rate contracts:
Customer swaps - upstream	$	12	$	474	$	6,104	$	191
Customer swaps - downstream	104,779		16,946		206		17,812
Foreign exchange contracts	—		18		—		18
Forward sales contracts	485		630		654		750
Written and purchased options	7,549		5,490		3,695		3,310
Other contracts	71		21		192		43
Total derivatives not designated as hedging instruments	$	112,896	$	23,579	$	10,851	$	22,124
Total	$	136,235	$	27,048	$	10,851	$	22,124

30

	Derivative Assets - Notional Amount				Derivative Liabilities - Notional Amount
(in thousands)	September 30, 2019		December 31, 2018		September 30, 2019		December 31, 2018
Derivatives designated as hedging instruments:
Interest rate contracts	$	800,000	$	408,500	$	108,500	$	—
Total derivatives designated as hedging instruments	$	800,000	$	408,500	$	108,500	$	—
Derivatives not designated as hedging instruments:
Interest rate contracts:
Customer swaps - upstream	$	142,425	$	919,653	$	2,259,248	$	701,257
Customer swaps - downstream	2,259,248		701,257		142,425		919,653
Foreign exchange contracts	—		1,202		—		1,202
Forward sales contracts	144,368		1,140		211,049		143,179
Written and purchased options	339,569		229,333		128,150		140,645
Other contracts	74,085		50,527		145,443		85,623
Total derivatives not designated as hedging instruments	$	2,959,695	$	1,903,112	$	2,886,315	$	1,991,559
Total	$	3,759,695	$	2,311,612	$	2,994,815	$	1,991,559

The Company has entered into risk participation agreements with counterparties to transfer or assume credit exposures related to interest rate derivatives. The notional amounts of risk participation agreements sold were $145.4 million and $85.6 million at September 30, 2019 and December 31, 2018, respectively. Assuming all underlying third party customers referenced in the swap contracts defaulted at September 30, 2019 and December 31, 2018, the exposure from these agreements would not be material based on the fair value of the underlying swaps.

The Company is party to collateral agreements with certain derivative counterparties. Such agreements require that the Company maintain collateral based on the fair values of individual derivative transactions. In the event of default by the Company, the counterparty would be entitled to the collateral.

At September 30, 2019 and December 31, 2018, the Company was not required to post collateral due to the Company's derivative position at the balance sheet date. At September 30, 2019 and December 31, 2018, the Company was required to post $106.5 million and $35.8 million, respectively, in variation margin payments for its derivative transactions, which is required to be netted against the fair value of the derivatives in other assets or other liabilities on the consolidated balance sheets. The Company does not anticipate additional assets will be required to be posted as collateral, nor does it believe additional assets would be required to settle its derivative instruments immediately if contingent features were triggered at September 30, 2019. The Company’s master netting agreements represent written, legally enforceable bilateral agreements that (1) create a single legal obligation for all individual transactions covered by the master agreement and (2) in the event of default, provide the non-defaulting counterparty the right to accelerate, terminate, and close-out on a net basis all transactions under the agreement and to promptly liquidate or set-off collateral posted by the defaulting counterparty. As permitted by GAAP, the Company does not offset fair value amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral against recognized fair value amounts of derivatives executed with the same counterparty under a master netting agreement.

31

The following table reconciles the gross amounts presented in the consolidated balance sheets to the net amounts that would result in the event of offset.

	September 30, 2019
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet					Net
(in thousands)			Derivatives			Collateral
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	23,338	$	—		$	—	$	23,338
Interest rate contracts not designated as hedging instruments	104,791		(6,119		)	—		98,672
Written and purchased options	3,581		—			—		3,581
Total derivative assets subject to master netting arrangements	$	131,710	$	(6,119	)	$	—	$	125,591
Derivative liabilities
Interest rate contracts not designated as hedging instruments	$	6,310	$	(6,119	)	$	—	$	191
Written and purchased options	3,581		—			—		3,581
Total derivative liabilities subject to master netting arrangements	$	9,891	$	(6,119	)	$	—	$	3,772

	December 31, 2018
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet					Net
(in thousands)			Derivatives			Collateral
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	3,469	$	—		$	—	$	3,469
Interest rate contracts not designated as hedging instruments	17,420		(619		)	—		16,801
Written and purchased options	3,285		—			—		3,285
Total derivative assets subject to master netting arrangements	$	24,174	$	(619	)	$	—	$	23,555
Derivative liabilities
Interest rate contracts not designated as hedging instruments	$	18,003	$	(619	)	$	—	$	17,384
Written and purchased options	3,285		—			—		3,285
Total derivative liabilities subject to master netting arrangements	$	21,288	$	(619	)	$	—	$	20,669

During the three and nine months ended September 30, 2019 and 2018, the Company did not reclassify into earnings any gain or loss as a result of the discontinuance of cash flow hedges because it was probable the original forecasted transaction would not occur by the end of the originally specified term.

At September 30, 2019, the Company did not expect to reclassify a material amount from accumulated other comprehensive income into interest income over the next twelve months for derivatives that will be settled.

32

At September 30, 2019 and 2018, and for the three and nine months then ended, information pertaining to the effect of the hedging instruments on the consolidated financial statements was as follows:

		Amount of Gain (Loss) Recognized in OCI, net of taxes								Location of Gain (Loss) Reclassified from AOCI into Income	Amount of Gain (Loss) Reclassified from AOCI into Income, net of taxes									Location of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)
		Total			Including Component		Excluding Component				Total			Including Component			Excluding Component				Total		Including Component		Excluding Component
(in thousands)		For the Three Months Ended September 30,
Derivatives in Cash Flow Hedging Relationships		2019									2019										2019
	Interest rate contracts	$	(264	)	$	312	$	(576	)	Interest expense	$	(162	)	$	102		$	(264	)	Interest expense	$	—	$	—	$	—
		2018									2018										2018
	Interest rate contracts	$	818		$	818	$	—		Interest expense	$	(22	)	$	(22	)	$	—		Interest expense	$	—	$	—	$	—

		Amount of Gain (Loss) Recognized in OCI, net of taxes							Location of Gain (Loss) Reclassified from AOCI into Income	Amount of Gain (Loss) Reclassified from AOCI into Income, net of taxes									Location of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)
		Total		Including Component		Excluding Component				Total			Including Component			Excluding Component				Total		Including Component		Excluding Component
(in thousands)		For the Nine Months Ended September 30,
Derivatives in Cash Flow Hedging Relationships		2019								2019										2019
	Interest rate contracts	$	1,992	$	3,196	$	(1,204	)	Interest expense	$	(467	)	$	212		$	(679	)	Interest expense	$	—	$	—	$	—
		2018								2018										2018
	Interest rate contracts	$	4,762	$	4,762	$	—		Interest expense	$	(178	)	$	(178	)	$	—		Interest expense	$	—	$	—	$	—

33

Information pertaining to the effect of derivatives not designated as hedging instruments on the consolidated financial statements as of September 30, was as follows:

	Location of Gain (Loss) Recognized in Income on Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives
		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(in thousands)		2019			2018			2019			2018
Interest rate contracts (1)	Commission income	$	4,067		$	2,586		$	10,761		$	5,093
Foreign exchange contracts	Other income	8			7			14			17
Forward sales contracts	Mortgage income	(1,765		)	948			(8,085		)	4,563
Written and purchased options	Mortgage income	(1,848		)	(692		)	1,675			473
Other contracts	Other income	(72		)	1			(99		)	(4		)
Total		$	390		$	2,850		$	4,266		$	10,142

^{(1) Includes fees associated with customer interest rate contracts.} 

34

NOTE 8 – LEASES

IBERIABANK as Lessee

The Company leases certain branch and corporate offices, land and ATM facilities through operating leases with terms ranging from less than one year to 44 years. The Company has no financing leases (formerly capital leases). As discussed in Note 2, Recent Accounting Pronouncements, the Company adopted new guidance for leases on January 1, 2019 which requires leases, whether classified as operating leases or financing leases, to be accounted for as the acquisition of a right-of-use asset (ROU asset) and a related lease liability recorded at the present value of the lease payments less any lease incentives. The ROU asset represents the Company’s right to use an underlying asset for the lease term and is included in other assets on the Company’s consolidated balance sheets. The lease liability represents the Company’s obligation to make lease payments and is included in other liabilities in the Company’s consolidated balance sheets. The cost of the lease is recognized on a straight-line basis over the lease term as lease expense. Prior to January 1, 2019, operating leases were not recorded on the balance sheet. See Note 2, Recent Accounting Pronouncements, for further discussion of the adoption on this new guidance.

Subsequent to the adoption of ASC 842 on January 1, 2019, the Company reviews new lease and service contracts to determine if the contracts contain an embedded lease. For leases that do not provide an implicit rate, the Company uses the corresponding FHLB Advance rate based on the lease term at commencement in determining the present value of lease payments. For leases with variable lease payments, the present value is determined using the index at the lease commencement date. Changes in variable rent payments due to subsequent changes in the index or rate do not result in a re-measurement of the ROU asset or lease liability, but are recognized as expense in the period in which they occur. Certain of the Company’s leases contain options to either renew, extend or terminate the lease. During the third quarter of 2019, the exercise of existing renewal options became reasonably certain for several of the Company’s leases with current noncancelable terms ending in 2020. These renewal options have varying term lengths ranging from 1 to 5 years, and the payments associated with the renewal options were included in the measurement of the lease liability and ROU asset as of September 30, 2019. The Company also has lease agreements with lease and non-lease components, which are generally accounted for separately. Non-lease components, which primarily consist of common area maintenance, utilities, and janitorial services, are based on the stand-alone price of the services and expensed as incurred.

Operating lease expense for the three and nine months ended September 30, 2019 totaled $6.9 million and $20.5 million, respectively. During the three and nine months ended September 30, 2019, the Company paid $6.7 million and $21.1 million, respectively, for amounts included in the measurement of lease liabilities and $18.1 million and $31.3 million, respectively, to obtain ROU assets.

The following summarizes the ROU asset and lease liabilities as of September 30, 2019:

(in thousands)	September 30, 2019
Right-of-use assets	$	112,156
Lease liabilities	131,800
Weighted average remaining lease term	7.95
Weighted average discount rate	3.14		%

Maturities of operating lease liabilities as of September 30, 2019 were as follows:

(in thousands)
2019	$	6,732
2020	25,895
2021	23,847
2022	21,414
2023	16,659
2024 and thereafter	55,296
Total operating lease payments	$	149,843
Less: Imputed interest	18,043
Total lease liabilities	$	131,800

As of September 30, 2019, the Company had not entered into any material leases that had not yet commenced.

35

IBERIABANK as Lessor

As a lessor, the Company engages in the leasing of equipment to commercial customers primarily through direct financing and sales-type leases. Direct financing and sales-type leases are similar to other forms of installment lending in that lessors generally do not retain benefits and risks incidental to ownership of the property subject to leases. Such arrangements are essentially financing transactions that permit lessees to acquire and use property. The new guidance on leases discussed above did not have a significant impact on the lessor model of accounting. As lessor, the sum of all minimum lease payments over the lease term and the estimated residual value, less unearned interest income, is recorded as the net investment in the lease on the commencement date and is included in loans and leases, net of unearned income in the consolidated balance sheets. Interest income is accrued as earned over the term of the lease based on the net investment in leases. Fees incurred to originate the lease are deferred on the commencement date and recognized as an adjustment of the yield on the lease.

The Company’s portfolio of direct financing and sales-type leases contains terms of 3 to 20 years. Some of these leases contain options to extend the leases for up to 12 months and/or to terminate the lease within one year. These direct financing and sales-type leases typically include a payment structure set at lease inception and do not provide any additional services. Expenses associated with the leased equipment, such as maintenance and insurance, are paid by the lessee directly to third parties. The lease agreement typically contains an option for the purchase of the leased property by the lessee at the end of the lease term at either the property’s residual value or a specified price. In all cases, the Company expects to sell or re-lease the equipment at the end of the lease term. Due to the nature and structure of the Company’s direct financing and sales-type leases, there is no selling profit or loss on these transactions.

At a lease’s inception, the Company determines the expected residual value of the leased property at the end of the lease term based on the type of equipment leased, location and usage, as well as the contractual return provisions in the lease agreement. Additionally, the Company utilizes multiple market sources of data to establish equipment values and in many cases engages certified appraisers to provide valuation analyses. In order to manage the risk associated with the residual value of its leased assets, lease agreements typically include various provisions designed to protect the value of the leased property, such as contractual equipment maintenance, use and return provisions, remarketing agreements, and lessee guarantees. In a few cases, the Company also obtains third-party guarantees to further manage residual risk in the portfolio. On an annual basis, leased properties with material residual values are reviewed for impairment.

The components of the Company’s net investment in leases were as follows:

(in thousands)	September 30, 2019
Lease payment receivable	$	363,224
Unguaranteed residual assets	34,991
Total net investment in leases	$	398,215

For the three and nine months ended September 30, 2019, interest income for direct financing or sales-type leases totaled $3.1 million and $7.4 million. During the three and nine months ended September 30, 2019, there was no profit or loss recognized at the commencement date for direct financing or sales-type leases.

Maturities of the Company's lease receivables as of September 30, 2019 were as follows:

(in thousands)
2019	$	21,480
2020	82,993
2021	68,163
2022	62,809
2023	48,670
2024 and thereafter	90,277
Total future minimum lease payments	$	374,392
Less: Imputed interest	11,168
Lease receivables	$	363,224

36

NOTE 9 – SHAREHOLDERS' EQUITY, CAPITAL RATIOS AND OTHER REGULATORY MATTERS

Preferred Stock

On April 4, 2019, the Company issued and sold an aggregate of 4,000,000 depositary shares (the “Series D Depositary Shares”), each representing a 1/400th ownership interest in a share of the Company’s 6.100% Fixed-to-Floating Non-Cumulative Perpetual Preferred Stock, Series D, par value $1.00 per share, (“Series D Preferred Stock”), with a liquidation preference of $10,000 per share of Series D Preferred Stock (equivalent to $25 per depositary share), which represents $100 million in aggregate liquidation preference.

Dividends will accrue and be payable on the Series D Preferred Stock, if declared by the Company's Board of Directors, and (i) will be paid semi-annually on May 1 and November 1, in arrears, at an annual rate equal to 6.100% for each period from the issuance date to May 1, 2024 and (ii) will be paid quarterly on February 1, May 1, August 1, and November 1 at an annual rate equal to three-month LIBOR plus 3.859% for each period on or after August 1, 2024. The Company may redeem the Series D Preferred Stock at its option, subject to regulatory approval, as described in the Company’s Registration Statement on Form 8-A, filed with the Securities and Exchange Commission on April 4, 2019.

The following table presents a summary of the Company's non-cumulative perpetual preferred stock:

							September 30, 2019		December 31, 2018
	Issuance Date	Earliest Redemption Date	Annual Dividend Rate		Liquidation Amount		Carrying Amount		Carrying Amount
(in thousands)
Series B Preferred Stock	8/5/2015	8/1/2025	6.625	%	$	80,000	$	76,812	$	76,812
Series C Preferred Stock	5/9/2016	5/1/2026	6.600	%	57,500		55,285		55,285
Series D Preferred Stock	4/4/2019	5/1/2024	6.100	%	100,000		96,388		—
					$	237,500	$	228,485	$	132,097

Common Stock

In 2018, the Company's Board of Directors authorized the repurchase of up to 2,765,000 shares of IBERIABANK Corporation's outstanding common stock. The remaining 117,230 shares available under this plan were repurchased during the third quarter of 2019. Also during the third quarter of 2019, the Company announced a new Board-approved share repurchase program for up to 1,600,000 shares, or approximately 3% of total common shares outstanding at the time of the announcement. Stock repurchases under this program will be made from time to time, on the open market or in privately negotiated transactions. The timing of these repurchases will depend on market conditions and other requirements. The share repurchase program does not obligate the Company to repurchase any dollar amount or number of shares, and expires during the third quarter of 2021. The program may be extended, modified, suspended, or discontinued at any time.

During the third quarter of 2019, the Company repurchased 552,230 common shares for approximately $40.0 million at a weighted average cost of $72.46 per share. During the third quarter of 2018, the Company repurchased 363,210 common shares for approximately $30.4 million at a weighted average cost of $83.63. During the nine months ended September 30, 2019, the Company repurchased 2,700,000 common shares for approximately $204.7 million at a weighted average cost of $75.83 per share. During the nine months ended September 30, 2018, the Company repurchased 763,210 common shares for approximately $61.0 million at a weighted average cost of $79.99 per share.

At September 30, 2019, the remaining number of common shares that could be repurchased under the new plan was 1,165,000 shares.

37

Regulatory Capital

The Company and IBERIABANK are subject to various regulatory capital requirements administered by federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy regulations and the regulatory framework for prompt corrective action, the Company and IBERIABANK, as applicable, must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

As of September 30, 2019, the Company and IBERIABANK met all capital adequacy requirements to which they are subject.

As of September 30, 2019, the most recent notification from the FRB categorized IBERIABANK as well-capitalized under the regulatory framework for prompt corrective action (the prompt corrective action requirements are not applicable to the Company). To be categorized as well-capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, Common Equity Tier 1, and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since the notification that management believes have changed that categorization.

The Company’s and IBERIABANK’s actual capital amounts and ratios as of September 30, 2019 and December 31, 2018 are presented in the following tables:

(in thousands)	September 30, 2019
	Minimum				Well-Capitalized		Actual
	Amount		Ratio		Amount	Ratio	Amount		Ratio
Tier 1 Leverage
Consolidated	$	1,208,894	4.00	%	N/A	N/A	$	2,955,775	9.78	%
IBERIABANK	1,206,257		4.00		1,507,821	5.00	2,861,883		9.49
Common Equity Tier 1 (CET1)
Consolidated	$	1,179,356	4.50	%	N/A	N/A	$	2,727,290	10.41	%
IBERIABANK	1,175,984		4.50		1,698,643	6.50	2,861,883		10.95
Tier 1 Risk-Based Capital
Consolidated	$	1,572,475	6.00	%	N/A	N/A	$	2,955,775	11.28	%
IBERIABANK	1,567,978		6.00		2,090,638	8.00	2,861,883		10.95
Total Risk-Based Capital
Consolidated	$	2,096,633	8.00	%	N/A	N/A	$	3,234,654	12.34	%
IBERIABANK	2,090,638		8.00		2,613,297	10.00	3,024,262		11.57

38

(in thousands)	December 31, 2018
	Minimum				Well-Capitalized		Actual
	Amount		Ratio		Amount	Ratio	Amount		Ratio
Tier 1 Leverage
Consolidated	$	1,168,343	4.00	%	N/A	N/A	$	2,812,863	9.63	%
IBERIABANK	1,165,537		4.00		1,456,921	5.00	2,733,099		9.38
Common Equity Tier 1 (CET1)
Consolidated	$	1,125,405	4.50	%	N/A	N/A	$	2,680,766	10.72	%
IBERIABANK	1,122,712		4.50		1,621,695	6.50	2,733,099		10.95
Tier 1 Risk-Based Capital
Consolidated	$	1,500,540	6.00	%	N/A	N/A	$	2,812,863	11.25	%
IBERIABANK	1,496,949		6.00		1,995,932	8.00	2,733,099		10.95
Total Risk-Based Capital
Consolidated	$	2,000,720	8.00	%	N/A	N/A	$	3,084,764	12.33	%
IBERIABANK	1,995,932		8.00		2,494,915	10.00	2,888,500		11.58

Minimum capital ratios are subject to a capital conservation buffer. In order to avoid limitations on distributions, including dividend payments, and certain discretionary bonus payments to executive officers, an institution must hold a capital conservation buffer above its minimum risk-based capital requirements. This capital conservation buffer is calculated as the lowest of the differences between the actual CET1 ratio, Tier 1 Risk-Based Capital Ratio, and Total Risk-Based Capital ratio and the corresponding minimum ratios. At September 30, 2019, the required minimum capital conservation buffer was 2.50%. At September 30, 2019, the capital conservation buffers of the Company and IBERIABANK were 4.34% and 3.57%, respectively.

39

NOTE 10 – EARNINGS PER SHARE

The computations of basic and diluted earnings per share were as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands, except per share data)	2019			2018			2019			2018
Earnings Per Common Share - Basic:
Net income	$	99,850		$	101,465		$	301,579		$	240,210
Less: Preferred stock dividends	3,599			3,599			8,146			8,146
Less: Dividends and undistributed earnings allocated to unvested restricted shares	874			908			2,806			2,341
Earnings allocated to common shareholders - basic	$	95,377		$	96,958		$	290,627		$	229,723
Weighted average common shares outstanding	51,984			55,571			53,160			55,047
Earnings per common share - basic	$	1.83		$	1.74		$	5.47		$	4.17
Earnings Per Common Share - Diluted:
Earnings allocated to common shareholders - basic	$	95,377		$	96,958		$	290,627		$	229,723
Adjustment for undistributed earnings allocated to unvested restricted shares	(17		)	(25		)	(37		)	(49		)
Earnings allocated to common shareholders - diluted	$	95,360		$	96,933		$	290,590		$	229,674
Weighted average common shares outstanding	51,984			55,571			53,160			55,047
Dilutive potential common shares	308			374			333			360
Weighted average common shares outstanding - diluted	52,292			55,945			53,493			55,407
Earnings per common share - diluted	$	1.82		$	1.73		$	5.43		$	4.14

For the three months ended September 30, 2019 and 2018, the calculations for basic shares outstanding excluded weighted average shares owned by the RRP of 491,977 and 542,796, respectively. For the nine months ended September 30, 2019 and 2018, the calculations for basic shares outstanding excluded weighted average shares owned by the RRP of 525,652 and 581,397, respectively.

The effects from the assumed exercises of 152,991 and 60,931 stock options were not included in the computation of diluted earnings per share for the three months ended September 30, 2019 and 2018, respectively, because they were antidilutive. For the nine months ended September 30, 2019 and 2018, the effects from the assumed exercises of 152,991 and 147,834 stock options, respectively, were not included in the computation of diluted earnings per share because they were antidilutive.

40

NOTE 11 – SHARE-BASED COMPENSATION

The Company has various types of share-based compensation plans that permit the granting of awards in the form of stock options, restricted stock, restricted share units and phantom stock. These plans are administered by the Compensation Committee of the Board of Directors, which selects persons eligible to receive awards and determines the terms, conditions and other provisions of the awards. At September 30, 2019, awards of 3,450,647 shares could be made under approved incentive compensation plans. The Company issues shares to fulfill stock option exercises and restricted share units and restricted stock awards vesting from available authorized common shares. At September 30, 2019, the Company believes there are adequate authorized shares to satisfy anticipated stock option exercises and restricted share unit and restricted stock award vesting.

Stock option awards

The Company issues stock options under various plans to directors, officers and other key employees. The option exercise price cannot be less than the fair value of the underlying common stock as of the date of the option grant and the maximum option term cannot exceed ten years.

The following table represents the activity related to stock options during the periods indicated:

	Number of Shares		Weighted Average Exercise Price
Outstanding options, December 31, 2017	686,366		$	58.24
Granted	97,620		82.02
Exercised	(41,697	)	53.12
Forfeited or expired	(27,328	)	68.19
Outstanding options, September 30, 2018	714,961		$	61.41
Exercisable options, September 30, 2018	500,349		$	56.70
Outstanding options, December 31, 2018	714,420		$	61.41
Granted	127,090		70.34
Exercised	(50,375	)	52.99
Forfeited or expired	(12,227	)	72.79
Outstanding options, September 30, 2019	778,908		$	63.23
Exercisable options, September 30, 2019	533,784		$	58.60

The Company uses the Black-Scholes option pricing model to estimate the fair value of stock option awards. The following weighted-average assumptions were used for option awards issued during the following periods:

	For the Nine Months Ended September 30,
	2019			2018
Expected dividends	2.3		%	1.8		%
Expected volatility	24.5		%	24.3		%
Risk-free interest rate	2.5		%	2.7		%
Expected term (in years)	5.7			5.8
Weighted-average grant-date fair value	$	14.44		$	18.48

The assumptions above are based on multiple factors, including historical stock option exercise patterns and post-vesting employment termination behaviors, expected future exercise patterns and the expected volatility of the Company’s stock price.

41

The following table represents the compensation expense that is included in non-interest expense and related income tax benefits in the accompanying consolidated statements of comprehensive income related to stock options for the following periods:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to stock options	$	373	$	321	$	1,058	$	952
Income tax benefit related to stock options	28		23		78		70

At September 30, 2019, there was $2.4 million of unrecognized compensation expense related to stock options that is expected to be recognized over a weighted-average period of 2.7 years.

Restricted stock awards

The Company issues restricted stock under various plans for certain officers and directors. The restricted stock awards may not be sold or otherwise transferred until certain restrictions have lapsed. The holders of the restricted stock receive dividends and have the right to vote the shares. The compensation expense for these awards is determined based on the market price of the Company's common stock at the date of grant applied to the total number of shares granted and is recognized over the vesting period (generally three to five years). As of September 30, 2019 and 2018, unrecognized share-based compensation expense associated with these awards totaled $24.3 million and $30.9 million, respectively. The unrecognized compensation expense related to restricted stock awards at September 30, 2019 is expected to be recognized over a weighted-average period of 1.3 years.

Restricted share units

The Company issues restricted share units to certain of its executive officers. Restricted share units vest after the end of a three year performance period, based on satisfaction of the market and performance conditions set forth in the restricted share unit agreements. Recipients do not possess voting or investment power over the common stock underlying such units until vesting. The grant date fair value of these restricted share units is the same as the value of the corresponding number of shares of common stock, adjusted for assumptions surrounding the market-based conditions contained in the respective agreements. See Note 1, Summary of Significant Accounting Policies, in the 2018 Annual Report on Form 10-K for the year ended December 31, 2018, for further discussion of restricted share units with market or performance conditions.

The following table represents the compensation expense that was included in non-interest expense and related income tax benefits in the accompanying consolidated statements of comprehensive income related to restricted stock awards and restricted share units for the periods indicated:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to restricted stock awards and restricted share units	$	5,088	$	4,843	$	16,242	$	14,192
Income tax benefit related to restricted stock awards and restricted share units	1,068		1,017		3,411		2,980

The following table represents unvested restricted stock award and restricted share unit activity for the following periods:

	For the Nine Months Ended September 30,
	2019		2018
Number of shares at beginning of period	700,628		738,187
Granted	217,078		229,181
Forfeited	(18,955	)	(70,981	)
Vested	(248,047	)	(192,217	)
Number of shares at end of period	650,704		704,170

42

Phantom stock awards

The Company issues phantom stock awards to certain key officers and employees. The awards are subject to a vesting period of five years and are paid out in cash upon vesting. The amount paid per vesting period is calculated as the number of vested “share equivalents” multiplied by the closing market price of a share of the Company’s common stock on the vesting date. Share equivalents are calculated on the date of grant as the total award’s dollar value divided by the closing market price of a share of the Company’s common stock on the grant date.

The following table represents compensation expense recorded for phantom stock based on the number of share equivalents vested at September 30 of the periods indicated and the current market price of the Company’s stock at that time:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to phantom stock	$	2,257	$	2,375	$	7,902	$	7,388

The following table represents phantom stock award activity during the periods indicated:

(in thousands)	Number of share equivalents (1)		Value of share equivalents (2)
Balance, December 31, 2017	393,844		$	30,523
Granted	151,908		12,358
Forfeited share equivalents	(59,550	)	4,844
Vested share equivalents	(130,497	)	10,871
Balance, September 30, 2018	355,705		$	28,937
Balance, December 31, 2018	353,407		$	22,717
Granted	183,879		13,890
Forfeited share equivalents	(30,283	)	2,288
Vested share equivalents	(107,592	)	8,116
Balance, September 30, 2019	399,411		$	30,171

⁽¹⁾  Number of share equivalents includes all reinvested dividend equivalents for the periods indicated.

⁽²⁾  Except for share equivalents at the beginning of each period, which are based on the value at that time, and vested share payments, which are based on the cash paid at the time of vesting, the value of share equivalents is calculated based on the market price of the Company’s stock at the end of the respective periods. The market price of the Company’s stock was $75.54 and $81.35 on September 30, 2019, and 2018, respectively.

43

NOTE 12 – FAIR VALUE MEASUREMENTS

Recurring fair value measurements

The following table presents information about the Company's assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2019 and December 31, 2018 and their classification within the fair value hierarchy. See Note 1, Summary of Significant Accounting Policies, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

	September 30, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Securities available for sale	$	—	$	4,238,082	$	—	$	4,238,082
Mortgage loans held for sale	—		255,276		—		255,276
Mortgage loans held for investment, at fair value option	—		—		4,138		4,138
Derivative instruments	—		136,235		—		136,235
Total	$	—	$	4,629,593	$	4,138	$	4,633,731
Liabilities
Derivative instruments	$	—	$	10,851	$	—	$	10,851
Total	$	—	$	10,851	$	—	$	10,851
	December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets
Securities available for sale	$	—	$	4,783,579	$	—	$	4,783,579
Mortgage loans held for sale	—		107,734		—		107,734
Mortgage loans held for investment, at fair value option	—		—		3,143		3,143
Derivative instruments	—		27,048		—		27,048
Total	$	—	$	4,918,361	$	3,143	$	4,921,504
Liabilities
Derivative instruments	$	—	$	22,124	$	—	$	22,124
Total	$	—	$	22,124	$	—	$	22,124

During the nine months ended September 30, 2019, there were no transfers between the Level 1 and Level 2 fair value categories.

44

Non-recurring fair value measurements

The Company holds certain assets that are measured at fair value only in certain circumstances, such as impairment. The following table presents information about the Company's assets that are measured at fair value and still held as of September 30, 2019 and December 31, 2018 for which a non-recurring fair value adjustment was recorded during the periods then ended. See Note 1, Summary of Significant Accounting Policies, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

	September 30, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Impaired loans	$	—	$	—	$	79,442	$	79,442
OREO, net	—		—		4,008		4,008
Total	$	—	$	—	$	83,450	$	83,450
	December 31, 2018
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Impaired loans	$	—	$	—	$	65,914	$	65,914
OREO, net	—		—		6,433		6,433
Total	$	—	$	—	$	72,347	$	72,347

The tables above exclude the initial measurement of assets and liabilities that were acquired as part of business combinations. These assets and liabilities were recorded at their fair value upon acquisition in accordance with GAAP and were not re-measured during the periods presented unless specifically required by GAAP. Acquisition date fair values represent either Level 2 fair value measurements (investment securities, deposits, and premises and equipment) or Level 3 fair value measurements (loans, core deposit intangible assets, and debt). Refer to Note 3, Acquisition Activity, in the Annual Report on Form 10-K for the year ended December 31, 2018, for further detail.

The Company did not record any liabilities at fair value for which measurement of the fair value was made on a non-recurring basis as of September 30, 2019 and December 31, 2018.

Fair value option

The Company has elected the fair value option for originated residential mortgage loans held for sale, which allows for a more effective offset of the changes in fair values of the loans and the derivative instruments used to hedge them without the burden of complying with the requirements for hedge accounting. The Company also has a portion of mortgage loans held for investment for which the fair value option was elected upon origination and which continue to be accounted for at fair value at September 30, 2019 and December 31, 2018, respectively.

The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for mortgage loans held for sale and mortgage loans held for investment measured at fair value:

	September 30, 2019							December 31, 2018
(in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal		Aggregate Fair Value Less Unpaid Principal			Aggregate Fair Value		Aggregate Unpaid Principal		Aggregate Fair Value Less Unpaid Principal
Mortgage loans held for sale, at fair value	$	255,276	$	248,256	$	7,020		$	107,734	$	104,345	$	3,389
Mortgage loans held for investment, at fair value	4,138		4,306		(168		)	3,143		3,595		(452		)

45

Interest income on mortgage loans held for sale and mortgage loans held for investment at fair value option is recognized based on contractual rates and is reflected in interest income on loans held for sale in the consolidated statements of comprehensive income. The following table details net gains (losses) resulting from the change in fair value of loans that were recorded in mortgage income in the consolidated statements of comprehensive income for the three and nine months ended September 30, 2019 and 2018. The changes in fair value are mostly offset by economic hedging activities, with an insignificant portion of these changes attributable to changes in instrument-specific credit risk.

	Net Gains (Losses) Resulting From Changes in Fair Value
	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(in thousands)	2019			2018			2019		2018
Fair value option
Mortgage loans held for sale, at fair value	$	100		$	(1,041	)	$	3,631	$	(2,513	)
Mortgage loans held for investment, at fair value	(14		)	(296		)	73		(1,217		)

46

NOTE 13 – FAIR VALUE OF FINANCIAL INSTRUMENTS

The estimated fair value of a financial instrument is the current amount that would be exchanged between willing parties, other than in a forced liquidation. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company’s various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. ASC Topic 825, Financial Instruments, excludes certain financial instruments and all non-financial instruments from its disclosure requirements. Consequently, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company.

The carrying amount and estimated fair values of the Company’s financial instruments, as well as the level within the fair value hierarchy, are included in the tables below. See Note 1, Summary of Significant Accounting Policies, and Note 2, Recent Accounting Pronouncements, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

		September 30, 2019
(in thousands)		Carrying  Amount		Fair Value		Level 1		Level 2		Level 3
Measurement Category
Fair Value
	Financial Assets
	Securities available for sale	$	4,238,082	$	4,238,082	$	—	$	4,238,082	$	—
	Mortgage loans held for sale	255,276		255,276		—		255,276		—
	Mortgage loans held for investment, at fair value option	4,138		4,138		—		—		4,138
	Derivative instruments	136,235		136,235		—		136,235		—
	Financial Liabilities
	Derivative instruments	10,851		10,851		—		10,851		—
Amortized Cost
	Financial Assets
	Cash and cash equivalents	$	930,933	$	930,933	$	930,933	$	—	$	—
	Securities held to maturity	185,007		192,586		—		192,586		—
	Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	23,526,164		23,290,286		—		—		23,290,286
	Financial Liabilities
	Deposits	24,977,285		24,985,510		—		24,985,510		—
	Short-term borrowings	498,049		498,049		223,049		275,000		—
	Long-term debt	1,394,202		1,391,857		—		—		1,391,857

47

		December 31, 2018
(in thousands)		Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Measurement Category
Fair Value
	Financial Assets
	Securities available for sale	$	4,783,579	$	4,783,579	$	—	$	4,783,579	$	—
	Mortgage loans held for sale	107,734		107,734		—		107,734		—
	Mortgage loans held for investment, at fair value option	3,143		3,143		—		—		3,143
	Derivative instruments	27,048		27,048		—		27,048		—
	Financial Liabilities
	Derivative instruments	22,124		22,124		—		22,124		—
Amortized Cost
	Financial Assets
	Cash and cash equivalents	$	690,453	$	690,453	$	690,453	$	—	$	—
	Securities held to maturity	207,446		204,277		—		204,277		—
	Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	22,376,101		22,088,236		—		—		22,088,236
	Financial Liabilities
	Deposits	23,763,431		23,752,139		—		23,752,139		—
	Short-term borrowings	1,482,882		1,482,882		315,882		1,167,000		—
	Long-term debt	1,166,151		1,154,062		—		—		1,154,062

The fair value estimates presented herein are based upon pertinent information available to management as of September 30, 2019 and December 31, 2018. Although management is not aware of any factors that would significantly affect the estimated fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since these dates and, therefore, current estimates of fair value may differ significantly from the amounts presented herein.

48

NOTE 14 – BUSINESS SEGMENTS

Each of the Company’s reportable operating segments serves the specific needs of the Company’s customers based on the products and services it offers. The reportable segments are based upon those revenue-producing components for which separate financial information is produced internally and primarily reflect the manner in which resources are allocated and performance is assessed. Further, the reportable operating segments are also determined based on the quantitative thresholds prescribed within ASC Topic 280, Segment Reporting, and consideration of the usefulness of the information to the users of the consolidated financial statements.

The Company reports the results of its operations through three reportable segments: IBERIABANK, Mortgage, and LTC. The IBERIABANK segment represents the Company’s commercial and retail banking functions, including its lending, investment, and deposit activities. IBERIABANK also includes the Company’s wealth management, capital markets, and other corporate functions. The Mortgage segment represents the Company’s origination, funding, and subsequent sale of one-to-four family residential mortgage loans. The LTC segment represents the Company’s title insurance and loan closing services.

Certain expenses not directly attributable to a specific reportable segment are allocated to segments based on pre-determined methods that reflect utilization. Also within IBERIABANK are certain reconciling items that translate reportable segment results into consolidated results. The following tables present certain information regarding operations by reportable segment, including a reconciliation of segment results to reported consolidated results for the periods presented. Reconciling items between segment results and reported results include:

• Elimination of interest income and interest expense representing interest earned by IBERIABANK on interest-bearing checking accounts held by related companies, as well as the elimination of the related deposit balances at the IBERIABANK segment;

• Elimination of investment in subsidiary balances on certain operating segments included in total and average segment assets; and

• Elimination of intercompany due to and due from balances on certain operating segments that are included in total and average segment assets.

	Three Months Ended September 30, 2019
(in thousands)	IBERIABANK			Mortgage		LTC			Consolidated
Interest and dividend income	$	330,896		$	2,282	$	—		$	333,178
Interest expense	83,845			—		—			83,845
Net interest income	247,051			2,282		—			249,333
Provision for (reversal of) credit losses	8,974			12		—			8,986
Mortgage income	—			17,432		—			17,432
Title revenue	—			—		7,170			7,170
Other non-interest income (expense)	35,881			3,194		(3		)	39,072
Allocated expenses (income)	(4,068		)	2,991		1,077			—
Non-interest expense	152,988			14,676		4,998			172,662
Income before income tax expense	125,038			5,229		1,092			131,359
Income tax expense	29,938			1,282		289			31,509
Net income	$	95,100		$	3,947	$	803		$	99,850
Total loans, leases, and loans held for sale, net of unearned income	$	23,650,057		$	281,756	$	—		$	23,931,813
Total assets	31,386,350			320,994		27,254			31,734,598
Total deposits	24,946,708			30,577		—			24,977,285
Average assets	31,256,216			271,817		26,258			31,554,291

49

	Three Months Ended September 30, 2018
(in thousands)	IBERIABANK			Mortgage			LTC		Consolidated
Interest and dividend income	$	315,467		$	1,599		$	1	$	317,067
Interest expense	57,842			—			—		57,842
Net interest income	257,625			1,599			1		259,225
Provision for (reversal of) credit losses	11,386			(2		)	—		11,384
Mortgage income	—			12,729			—		12,729
Title revenue	—			—			6,280		6,280
Other non-interest income (expense)	33,594			(16		)	500		34,078
Allocated expenses (income)	(3,691		)	2,680			1,011		—
Non-interest expense	154,000			10,223			4,839		169,062
Income before income tax expense	129,524			1,411			931		131,866
Income tax expense	29,765			386			250		30,401
Net income	$	99,759		$	1,025		$	681	$	101,465
Total loans, leases, and loans held for sale, net of unearned income	$	22,302,679		$	84,203		$	—	$	22,386,882
Total assets	29,974,065			119,322			25,000		30,118,387
Total deposits	23,179,549			13,897			—		23,193,446
Average assets	29,863,742			158,464			24,025		30,046,231

	Nine Months Ended September 30, 2019
(in thousands)	IBERIABANK			Mortgage			LTC			Consolidated
Interest and dividend income	$	989,595		$	5,633		$	1		$	995,229
Interest expense	240,073			—			—			240,073
Net interest income	749,522			5,633			1			755,156
Provision for (reversal of) credit losses	33,539			(35		)	—			33,504
Mortgage income	—			47,725			—			47,725
Title revenue	—			—			19,290			19,290
Other non-interest income (expense)	104,840			3,172			(19		)	107,993
Allocated expenses (income)	(10,515		)	7,741			2,774			—
Non-interest expense	447,882			38,807			14,344			501,033
Income before income tax expense	383,456			10,017			2,154			395,627
Income tax expense	91,047			2,425			576			94,048
Net income	$	292,409		$	7,592		$	1,578		$	301,579
Total loans, leases, and loans held for sale, net of unearned income	$	23,650,057		$	281,756		$	—		$	23,931,813
Total assets	31,386,350			320,994			27,254			31,734,598
Total deposits	24,946,708			30,577			—			24,977,285
Average assets	30,981,906			215,306			25,299			31,222,511

50

	Nine Months Ended September 30, 2018
(in thousands)	IBERIABANK			Mortgage			LTC			Consolidated
Interest and dividend income	$	886,629		$	4,802		$	2		$	891,433
Interest expense	143,206			—			—			143,206
Net interest income	743,423			4,802			2			748,227
Provision for (reversal of) credit losses	27,316			(26		)	—			27,290
Mortgage income	—			36,045			—			36,045
Title revenue	—			—			18,153			18,153
Other non-interest income (expense)	96,981			(83		)	497			97,395
Allocated expenses (income)	(9,043		)	6,714			2,329			—
Non-interest expense	505,423			34,105			14,382			553,910
Income (loss) before income tax expense	316,708			(29		)	1,941			318,620
Income tax expense (benefit)	78,516			(7		)	(99		)	78,410
Net income (loss)	$	238,192		$	(22	)	$	2,040		$	240,210
Total loans, leases, and loans held for sale, net of unearned income	$	22,302,679		$	84,203		$	—		$	22,386,882
Total assets	29,974,065			119,322			25,000			30,118,387
Total deposits	23,179,549			13,897			—			23,193,446
Average assets	29,136,369			164,039			23,037			29,323,445

51

NOTE 15 – COMMITMENTS AND CONTINGENCIES

Off-balance sheet commitments

In the normal course of business, to meet the financing needs of its customers, the Company is a party to credit-related financial instruments, with risk not reflected in the consolidated financial statements. These financial instruments include commitments to extend credit, standby letters of credit, and commercial letters of credit. Such commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets. The credit policies used for these commitments are consistent with those used for on-balance sheet instruments. The Company’s exposure to credit loss in the event of non-performance by its customers under such commitments or letters of credit represents the contractual amount of the financial instruments as indicated in the table below. At September 30, 2019 and December 31, 2018, the fair value of guarantees under commercial and standby letters of credit was $2.2 million and $2.4 million, respectively. This fair value will decrease as the existing commercial and standby letters of credit approach their expiration dates.

At September 30, 2019 and December 31, 2018, respectively, the Company had the following financial instruments outstanding and related reserves, whose contract amounts represent credit risk:

(in thousands)	September 30, 2019		December 31, 2018
Commitments to extend credit	$	883,615	$	642,162
Unfunded commitments under lines of credit	7,252,052		6,883,963
Commercial and standby letters of credit	215,664		240,436
Reserve for unfunded lending commitments	16,144		14,830

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee by the borrower. Since many of the commitments are expected to be drawn upon, the total commitment amounts generally represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral, if any, is based on management’s credit evaluation of the customer.

Unfunded commitments under commercial lines of credit, revolving credit lines, and overdraft protection agreements are commitments for possible future extensions of credit to existing customers. Many of these types of commitments do not contain a specified maturity date and may not be drawn upon to the total extent to which the Company is committed. See Note 5, Allowance for Credit Losses and Credit Quality, for additional information related to the Company’s reserve for unfunded lending commitments.

Commercial and standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These guarantees are primarily issued to support public and private borrowing arrangements, including commercial paper issuance, bond financing, and similar transactions. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. When necessary, they are collateralized, generally in the form of marketable securities and cash equivalents.

Legal proceedings

The nature of the business of the Company’s banking and other subsidiaries ordinarily results in a certain amount of claims, litigation, investigations, and legal and administrative cases and proceedings, which are considered incidental to the normal conduct of business. Some of these claims are against entities or assets of which the Company is a successor or acquired in business acquisitions. The Company has asserted defenses to these claims and, with respect to such legal proceedings, intends to continue to defend itself vigorously, litigating or settling cases according to management’s judgment as to what is in the best interest of the Company and its shareholders.

52

In July of 2016, the Company received a subpoena from the Office of Inspector General of the U.S. Department of Housing and Urban Development (“HUD”) requesting information on certain previously originated loans insured by the Federal Housing Administration ("FHA") as well as other documents regarding the Company's FHA-related policies and practices. After the Company complied with the subpoena, attorneys from the Department of Justice (“DOJ”) informed the Company in late March of 2017 that a civil qui tam suit had been filed against the Company in federal court involving the subject matter of the HUD subpoena. The HUD lawsuit was settled on December 11, 2017 in the amount of $11.7 million. On February 2, 2018, IBERIABANK filed a lawsuit in the United States District Court for the Eastern District of Louisiana (New Orleans) against Illinois Union Insurance Company and Travelers Casualty and Surety Company of America in an effort to recover the $11.7 million it paid to settle the HUD matter. IBERIABANK filed that lawsuit to recover the insurance proceeds to which it claims to be entitled under certain Bankers’ Professional Liability insurance policies issued by defendants Illinois Union and Travelers. More specifically, IBERIABANK alleges that the insurers have failed to honor their obligations under the policies to pay IBERIABANK’s losses in connection with the $11.7 million settlement of disputed allegations relating to IBERIABANK’s professional services in connection with certain mortgage loans insured by the FHA. The judge in the federal lawsuit granted motion for summary judgment thereby dismissing the case. The Company has appealed that decision to the United States Court of Appeals for the Fifth Circuit. The appeal seeks reversal of the summary judgment such that the case can be remanded to the district court in an effort to recover the $11.7 million.

The Company assesses its liabilities and contingencies in connection with outstanding legal proceedings utilizing the latest information available. Where it is probable that the Company will incur a loss and the amount of the loss can be reasonably estimated, the Company records a liability in its consolidated financial statements. These legal reserves may be increased or decreased to reflect any relevant developments on a quarterly basis. Where a loss is not probable or the amount of loss is not estimable, the Company does not accrue legal reserves. While the outcome of legal proceedings is inherently uncertain, based on information currently available and available insurance coverage, the Company’s management believes that it has established appropriate legal reserves. Any incremental liabilities arising from pending legal proceedings are not expected to have a material adverse effect on the Company’s consolidated financial position, consolidated results of operations, or consolidated cash flows. However, it is possible that the ultimate resolution of these matters, if unfavorable, may be material to the Company’s consolidated financial position, consolidated results of operations, or consolidated cash flows.

As of the date of this filing, the Company believes the amount of losses associated with legal proceedings that is reasonably possible to incur above amounts already accrued and reported as of September 30, 2019 is not material.

53

NOTE 16 – RELATED PARTY TRANSACTIONS

In the ordinary course of business, the Company may execute transactions with various related parties. Examples of such transactions may include lending or deposit arrangements, transfers of financial assets, services for administrative support, and other miscellaneous items.

The Company has granted loans to executive officers and directors and their affiliates. These loans, including the related principal additions, principal payments, and unfunded commitments are not material to the consolidated financial statements at September 30, 2019 and December 31, 2018. There were no outstanding loans to such related parties classified as non-accrual, past due, or troubled debt restructurings at September 30, 2019.

Deposits from related parties held by the Company were not material at September 30, 2019 and December 31, 2018.

NOTE 17 - SUBSEQUENT EVENTS

On November 3, 2019, the Company entered into a definitive agreement with First Horizon National Corporation (“First Horizon”) under which the companies will combine in an all-stock merger of equals. As a result of the merger, each share of the Company's common stock will be exchanged for 4.584 shares of First Horizon common stock. Under the terms of the agreement, which was unanimously approved by the Boards of Directors of both companies, the combined organization will operate under the First Horizon name and will be headquartered in Memphis, Tennessee. The merger is expected to close in the second quarter of 2020, subject to satisfaction of customary closing conditions, including receipt of customary regulatory approvals and approval by the shareholders of each company.

54

Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis is intended to assist readers in understanding the consolidated financial condition and results of operations of IBERIABANK Corporation and its wholly-owned subsidiaries (collectively, the “Company”) as of and for the period ended September 30, 2019, and updates the Annual Report on Form 10-K for the year ended December 31, 2018. This discussion should be read in conjunction with the unaudited consolidated financial statements, accompanying footnotes and supplemental financial data included herein. The emphasis of this discussion will be amounts as of September 30, 2019 compared to December 31, 2018 for the balance sheets and the three and nine months ended September 30, 2019 compared to September 30, 2018 for the statements of comprehensive income. Certain amounts in prior year presentations have been reclassified to conform to the current year presentation.

When we refer to the “Company,” “we,” “our” or “us” in this Report, we mean IBERIABANK Corporation and subsidiaries (consolidated). When we refer to the “Parent,” we mean IBERIABANK Corporation. See the Glossary of Defined Terms at the end of this Report for terms used throughout this Report.

CAUTION ABOUT FORWARD-LOOKING STATEMENTS

To the extent that statements in this Report relate to future plans, objectives, financial results or performance of the Company, these statements are deemed to be “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements, which are based on management’s current information, estimates and assumptions and the current economic environment, are generally identified by use of the words “may,” “plan,” “believe,” “expect,” “intend,” “will,” “should,” “continue,” “potential,” “anticipate,” “estimate,” “predict,” “project” or similar expressions, or the negative of these terms or other comparable terminology. The Company’s actual strategies and results in future periods may differ materially from those currently expected due to various risks and uncertainties.

Forward-looking statements represent management’s beliefs, based upon information available at the time the statements are made, with regard to the matters addressed; they are not guarantees of future performance. Forward-looking statements are subject to numerous assumptions, risks and uncertainties that change over time and could cause actual results or financial condition to differ materially from those expressed in or implied by such statements. Factors that could cause or contribute to such differences include, but are not limited to: the level of market volatility, our ability to execute our growth strategy, including the availability of future bank acquisition opportunities, our ability to execute on our revenue and efficiency improvement initiatives, unanticipated delays, losses, business disruptions and diversion of management time related to the completion and integration of mergers and acquisitions, refinements to purchase accounting adjustments for acquired businesses and assets and assumed liabilities in these transactions, adjustments of fair values of acquired assets and assumed liabilities and of deferred taxes in acquisitions, actual results deviating from the Company’s current estimates and assumptions of timing and amounts of cash flows, credit risk of our customers, effects of low energy and commodity prices, effects of residential real estate prices and levels of home sales, our ability to satisfy capital and liquidity standards, sufficiency of our allowance for credit losses, changes in interest rates, access to funding sources, reliance on the services of executive management, competition for loans, deposits and investment dollars, competition from competitors with greater financial resources than the Company, threats of fintech innovation, reputational risks and social factors, changes in government regulations and legislation, increases in FDIC insurance assessments, geographic concentration of our markets, economic or business conditions in our markets or nationally, rapid changes in the financial services industry, significant litigation, cyber-security risks including dependence on our operational, technological, and organizational systems and infrastructure and those of third party providers of those services, hurricanes and other adverse weather events, and valuation of intangible assets.

Factors that may cause actual results to differ materially from these forward-looking statements are discussed in the Company’s Annual Report on Form 10-K and other filings with the Securities and Exchange Commission (the “SEC”), available at the SEC’s website, www.sec.gov, and the Company’s website, www.iberiabank.com, under the heading “Investor Relations” and then “Financial Information.” All information is as of the date of this Report unless otherwise noted. Except to the extent required by applicable law or regulation, the Company undertakes no obligation to revise or update publicly any forward-looking statement for any reason.

55

EXECUTIVE SUMMARY

Corporate Profile

IBERIABANK Corporation is a financial holding company based in Lafayette, Louisiana. Through its subsidiaries, the Company provides a full range of commercial and consumer banking services, including private banking, small business, wealth and trust management, retail brokerage, mortgage, commercial leasing and equipment financing, and title insurance services through locations in Louisiana, Arkansas, Tennessee, Alabama, Texas, Florida, Georgia, South Carolina, North Carolina, Mississippi, Missouri, and New York.

Quarterly Financial Performance Summary:

• Net income available to common shareholders for the quarter ended September 30, 2019 totaled $96.3 million, or $1.82 diluted EPS, compared to $97.9 million, or $1.73 diluted EPS, for the same period of 2018. Non-GAAP core EPS, which excludes merger-related costs and other items disclosed in Table 17 - Non-GAAP measures, was $1.82 for the third quarter of 2019 compared to $1.74 for the same period of 2018.

• Net interest income was $249.3 million for the third quarter of 2019, a $9.9 million, or 4%, decrease compared to the same quarter of 2018. Net interest margin on a tax-equivalent basis decreased 30 basis points to 3.44% from 3.74%, primarily attributable to higher funding costs when comparing the periods.

• The Company recorded a provision for credit losses of $9.0 million for the quarter ended September 30, 2019, a $2.4 million decrease from the provision recorded for the same period of 2018, primarily driven by an overall improvement in asset quality and lower net charge-offs in the third quarter of 2019 compared to the corresponding 2018 period.

• Non-interest income increased $10.6 million, or 20%, to $63.7 million for the quarter ended September 30, 2019. This increase was primarily driven by higher mortgage income when comparing the periods and a $3.2 million gain on non-mortgage loan sales.

• Non-interest expense for the third quarter of 2019 increased $3.6 million, or 2%, to $172.7 million compared to the same period of 2018, primarily from an increase in occupancy and equipment expense from a write-off on certain long-lived assets.

Year-to-Date Financial Performance Summary:

• Net income available to common shareholders for the nine months ended September 30, 2019 was $293.4 million, or $5.43 diluted EPS, compared to $232.1 million, or $4.14 diluted EPS, for the same period of 2018. Non-GAAP core EPS, which excludes merger-related costs and other items disclosed in Table 17 - Non-GAAP measures, was $5.41 for the year-to-date period of 2019 compared to $4.83 for the same period of 2018.

• Net interest income was $755.2 million for the nine months ended September 30, 2019, a $6.9 million, or 1%, increase compared to the same period of 2018. Net interest margin on a tax-equivalent basis decreased 18 basis points to 3.54% from 3.72%, primarily attributable to higher funding costs in 2019.

• The Company recorded a provision for credit losses of $33.5 million for the nine months ended September 30, 2019, a $6.2 million increase from the provision recorded for the same period of 2018, primarily driven by loan growth when comparing the periods.

• Non-interest income increased $23.4 million, or 15%, to $175.0 million during the nine months ended September 30, 2019 compared to the same period of 2018, primarily driven by higher mortgage income and customer swap commissions.

• Non-interest expense for the nine months ended September 30, 2019, decreased $52.9 million, or 10%, to $501.0 million compared to the same period of 2018. This decrease was partially attributable to branch consolidation and closure expenses that were incurred in 2018. Additionally, salaries and employee benefits expense was lower due to merger-related costs incurred in 2018.

56

Financial Condition Summary:

• Total assets at September 30, 2019 were $31.7 billion, up $901.6 million, or 3%, from December 31, 2018.

• Loans and leases increased $1.2 billion, or 5%, from December 31, 2018, driven by strong growth in the Energy and Corporate Asset Finance Groups and the Birmingham, Dallas, and New Orleans markets.

• Total deposits increased $1.2 billion, or 5%, from December 31, 2018.

• Credit quality remained strong and stable. Non-performing assets to total assets were 0.58% at September 30, 2019 compared to 0.55% at December 31, 2018. Net charge-offs to average loans and leases, on an annualized basis, decreased two basis points to 0.14% for the nine months ended September 30, 2019 compared to 0.16% for the comparable 2018 period.

• Shareholders’ equity increased $227.0 million, or 6%, primarily driven by undistributed income and proceeds from the Preferred Stock Series D issuance, offset by common stock repurchases during the period.

57

FINANCIAL OVERVIEW

The following table sets forth selected financial ratios and other relevant data used by management to analyze the Company's performance.

TABLE 1—SELECTED CONSOLIDATED FINANCIAL AND OTHER DATA

	As of and For the Three Months Ended September 30,
	2019		2018
Key Ratios (1)
Return on average assets	1.26	%	1.34	%
Core return on average assets (Non-GAAP) (2)	1.26		1.35
Return on average common equity	9.46		10.21
Core return on average tangible common equity (Non-GAAP) (2) (3)	14.48		16.34
Equity to assets at end of period	13.50		13.09
Earning assets to interest-bearing liabilities at end of period	142.73		143.56
Interest rate spread (4)	2.95		3.37
Net interest margin (TE) (4) (5)	3.44		3.74
Non-interest expense to average assets (annualized)	2.17		2.23
Efficiency ratio (6)	55.2		54.1
Core tangible efficiency ratio (TE) (Non-GAAP) (2) (3) (5) (6)	53.4		51.9
Common stock dividend payout ratio	24.4		21.8
Asset Quality Data
Non-performing assets to total assets at end of period (7)	0.58	%	0.63	%
Allowance for credit losses to non-performing loans at end of period (7)	102.83		97.20
Allowance for credit losses to total loans at end of period	0.69		0.68
Consolidated Capital Ratios
Tier 1 leverage ratio	9.78	%	9.65	%
Common equity tier 1 (CET1)	10.41		10.79
Tier 1 risk-based capital ratio	11.28		11.33
Total risk-based capital ratio	12.34		12.42

⁽¹⁾  With the exception of end-of-period ratios, all ratios are based on average daily balances during the respective periods.

⁽²⁾  See Table 17 for GAAP to Non-GAAP reconciliations.

⁽³⁾  Tangible calculations eliminate the effect of goodwill and acquisition-related intangible assets and the corresponding amortization expense on a tax-effected basis where applicable.

⁽⁴⁾  Interest rate spread represents the difference between the weighted average yield on earning assets and the weighted average cost of interest-bearing liabilities. Net interest margin represents net interest income as a percentage of average earning assets.

⁽⁵⁾  Fully taxable equivalent ("TE") calculations include the tax benefit associated with related income sources that are tax-exempt using a rate of 21%.

⁽⁶⁾  The efficiency ratio represents non-interest expense as a percentage of total revenues. Total revenues are the sum of net interest income and non-interest income.

⁽⁷⁾  Non-performing loans consist of non-accruing loans and accruing loans 90 days or more past due. Non-performing assets consist of non-performing loans and other real estate owned, including repossessed assets.

58

ANALYSIS OF RESULTS OF OPERATIONS

Net Interest Income/Net Interest margin

Net interest income is the difference between interest realized on earning assets and interest accrued on interest-bearing liabilities and is also the largest driver of earnings. As such, it is subject to constant scrutiny by management. The rate of return and relative risk associated with earning assets are weighed to determine the appropriateness and mix of earning assets. Additionally, the need for lower cost funding sources is weighed against relationships with clients and future growth opportunities. The Company’s net interest spread, which is the difference between the yields earned on average earning assets and the rates paid on average interest-bearing liabilities, was 2.95% and 3.37%, during the three months ended September 30, 2019 and 2018, respectively, and 3.07% and 3.40% for the nine months ended September 30, 2019 and 2018, respectively. The Company’s net interest margin on a taxable equivalent basis, which is net interest income as a percentage of average earning assets, was 3.44% and 3.74%, respectively, for the three months ended September 30, 2019 and 2018, and 3.54% and 3.72%, respectively, for the nine months ended September 30, 2019 and 2018.

59

The following table sets forth information regarding (i) the total dollar amount of interest income from earning assets and the resultant average yields; (ii) the total dollar amount of interest expense on interest-bearing liabilities and the resultant average rates; (iii) net interest income; (iv) net interest spread; and (v) net interest margin. Information is based on average daily balances during the indicated periods. Investment security market value adjustments and trade-date accounting adjustments are not considered to be earning assets and, as such, the net effect of these adjustments is included in non-earning assets.

TABLE 2—QUARTERLY AVERAGE BALANCES, NET INTEREST INCOME AND INTEREST YIELDS / RATES

	Three Months Ended September 30,
	2019							2018
(in thousands)	Average Balance			Interest Income/Expense (1)		Yield/ Rate (TE)(2)		Average Balance			Interest Income/Expense (1)		Yield/ Rate (TE)(2)
Earning Assets:
Loans and leases:
Commercial loans and leases	$	16,155,962		$	205,350	5.06	%	$	14,825,572		$	191,014	5.13	%
Residential mortgage loans	4,588,549			50,939		4.44	%	4,230,471			48,145		4.55	%
Consumer and other loans	2,778,381			40,501		5.78	%	3,106,330			43,966		5.62	%
Total loans and leases	23,522,892			296,790		5.03	%	22,162,373			283,125		5.09	%
Mortgage loans held for sale	209,778			1,936		3.69	%	87,823			1,037		4.72	%
Investment securities(3)	4,493,789			29,932		2.71	%	5,016,163			29,793		2.43	%
Other earning assets	733,305			4,520		2.44	%	456,120			3,112		2.71	%
Total earning assets	28,959,764			333,178		4.59	%	27,722,479			317,067		4.57	%
Allowance for loan and lease losses	(148,203		)					(139,075		)
Non-earning assets	2,742,730							2,462,827
Total assets	$	31,554,291						$	30,046,231
Interest-bearing liabilities
Deposits:
NOW accounts	$	4,451,579		$	11,305	1.01	%	$	4,296,392		$	8,841	0.82	%
Savings and money market accounts	9,188,186			32,959		1.42	%	9,237,614			23,076		0.99	%
Time deposits	4,523,555			26,489		2.32	%	3,023,180			12,484		1.64	%
Total interest-bearing deposits (4)	18,163,320			70,753		1.55	%	16,557,186			44,401		1.06	%
Short-term borrowings	794,044			3,880		1.94	%	1,196,165			4,727		1.57	%
Long-term debt	1,360,492			9,212		2.69	%	1,381,010			8,714		2.50	%
Total interest-bearing liabilities	20,317,856			83,845		1.64	%	19,134,361			57,842		1.20	%
Non-interest-bearing deposits	6,425,026							6,684,343
Non-interest-bearing liabilities	545,838							292,445
Total liabilities	27,288,720							26,111,149
Shareholders’ equity	4,265,571							3,935,082
Total liabilities and shareholders’ equity	$	31,554,291						$	30,046,231
Net earning assets	$	8,641,908						$	8,588,118
Net interest income/ Net interest spread				$	249,333	2.95	%				$	259,225	3.37	%
Net interest income (TE) / Net interest margin (TE) (1)				$	250,653	3.44	%				$	260,686	3.74	%

⁽¹⁾  Interest income includes loan fees of $0.9 million for the three-month periods ended September 30, 2019 and 2018.

⁽²⁾  Fully taxable equivalent (TE) calculations include the tax benefit associated with related income sources that are tax-exempt using a rate of 21%.

⁽³⁾  Balances exclude unrealized gains or losses on securities available for sale and the impact of trade date accounting.

⁽⁴⁾  Total deposit costs for the three months ended September 30, 2019 and 2018 were 1.14% and 0.76%, respectively.

60

TABLE 3—YEAR-TO-DATE AVERAGE BALANCES, NET INTEREST INCOME AND INTEREST YIELDS / RATES

	Nine Months Ended September 30,
	2019							2018
(in thousands)	Average Balance			Interest Income/Expense (1)		Yield/ Rate (TE)(2)		Average Balance			Interest Income/Expense (1)		Yield/ Rate (TE)(2)
Earning Assets:
Loans and leases:
Commercial loans and leases	$	15,728,652		$	604,953	5.16	%	$	14,517,767		$	534,504	4.94	%
Residential mortgage loans	4,486,188			148,156		4.40	%	3,811,786			129,854		4.54	%
Consumer and other loans	2,869,631			125,246		5.84	%	3,069,198			127,312		5.55	%
Total loans and leases	23,084,471			878,355		5.10	%	21,398,751			791,670		4.96	%
Mortgage loans held for sale	155,517			4,578		3.93	%	89,845			3,027		4.49	%
Investment securities(3)	4,798,142			99,860		2.82	%	4,940,093			87,212		2.41	%
Other earning assets	636,158			12,436		2.61	%	571,346			9,524		2.23	%
Total earning assets	28,674,288			995,229		4.66	%	27,000,035			891,433		4.43	%
Allowance for loan and lease losses	(145,017		)					(142,960		)
Non-earning assets	2,693,240							2,466,370
Total assets	$	31,222,511						$	29,323,445
Interest-bearing liabilities
Deposits:
NOW accounts	$	4,466,275		$	34,325	1.03	%	$	4,384,425		$	24,542	0.75	%
Savings and money market accounts	9,097,732			92,565		1.36	%	9,018,101			56,089		0.83	%
Time deposits	4,182,394			69,964		2.24	%	2,740,119			28,173		1.37	%
Total interest-bearing deposits (4)	17,746,401			196,854		1.48	%	16,142,645			108,804		0.90	%
Short-term borrowings	979,315			14,793		2.02	%	1,073,296			10,578		1.32	%
Long-term debt	1,429,634			28,426		2.66	%	1,380,000			23,824		2.31	%
Total interest-bearing liabilities	20,155,350			240,073		1.59	%	18,595,941			143,206		1.03	%
Non-interest-bearing deposits	6,380,082							6,587,729
Non-interest-bearing liabilities	481,794							283,438
Total liabilities	27,017,226							25,467,108
Shareholders’ equity	4,205,285							3,856,337
Total liabilities and shareholders’ equity	$	31,222,511						$	29,323,445
Net earning assets	$	8,518,938						$	8,404,094
Net interest income/ Net interest spread				$	755,156	3.07	%				$	748,227	3.40	%
Net interest income (TE) / Net interest margin (TE) (1)				$	759,150	3.54	%				$	752,584	3.72	%

⁽¹⁾  Interest income includes loan fees of $2.7 million and $2.5 million for the nine-month periods ended September 30, 2019 and 2018, respectively.

⁽²⁾  Fully taxable equivalent (TE) calculations include the tax benefit associated with related income sources that are tax-exempt using a rate of 21%.

⁽³⁾  Balances exclude unrealized gains or losses on securities available for sale and the impact of trade date accounting.

⁽⁴⁾  Total deposit costs for the nine months ended September 30, 2019 and 2018 were 1.09% and 0.64%, respectively.

61

Net interest income decreased $9.9 million to $249.3 million in the third quarter of 2019 when compared to the same quarter of 2018. Net interest margin on a tax-equivalent basis decreased 30 basis points to 3.44% from 3.74% when comparing the periods. On a year-to-date basis, net interest income increased $6.9 million, or 1%, to $755.2 million when compared to the same period of 2018. Net interest margin on a tax-equivalent basis decreased 18 basis points to 3.54% from 3.72% when comparing the year-to-date periods.

Average earning assets were $29.0 billion for the third quarter of 2019, an increase of $1.2 billion, or 4%, compared to the same period of 2018. Average loans and leases increased $1.4 billion, or 6%, when comparing the quarterly periods, driven by organic loan growth throughout the Company's footprint, most notably from the Energy and Corporate Asset Finance Groups, as well as the New Orleans, Dallas, and Birmingham markets. Average investment securities were $4.5 billion for the third quarter of 2019 compared to $5.0 billion for the third quarter of 2018.

For the nine months ended September 30, 2019, average earning assets were $28.7 billion, an increase of $1.7 billion, or 6%, compared to the same period of 2018. Average loans and leases increased $1.7 billion, or 8%, when comparing the periods. Average investment securities were $4.8 billion for the year-to-date period of 2019, compared to $4.9 billion for the same period of 2018.

Average interest-bearing liabilities were $20.3 billion for the third quarter of 2019, an increase of $1.2 billion, or 6%, compared to the same period of 2018. The Company realized growth of $1.6 billion in the average balance of interest-bearing deposits when comparing the quarters, primarily due to brokered deposit issuances and market growth, especially in the Miami-Dade, Acadiana, Palm Beach/Broward and Atlanta markets.

For the nine months ended September 30, 2019, average interest-bearing liabilities were $20.2 billion, an increase of $1.6 billion, or 8%, compared to the same period of 2018. Average interest-bearing deposits were $17.7 billion, an increase of $1.6 billion when comparing the year-to-date periods, primarily due to brokered deposit issuances and market growth.

For the third quarter of 2019, the yield on average earning assets was 4.59% compared to 4.57% for the third quarter of 2018. Average loan yields decreased 6 basis points when comparing the quarters, primarily driven by lower purchase accounting accretion and recoveries on certain acquired loans. The yield on average investment securities increased 28 basis points due to a portfolio restructuring in the fourth quarter of 2018.

For the nine months ended September 30, 2019, the yield on average interest earning assets rose 23 basis points to 4.66% from 4.43% for the same period of 2018. Average loan yields increased 14 basis points when comparing the year-to-date periods, primarily driven by the repricing of variable rate loans and higher purchase accounting accretion. In addition, the yield on average investment securities increased 41 basis points due to the portfolio restructuring in the fourth quarter of 2018.

The average rate paid on interest-bearing liabilities was 1.64% for the third quarter of 2019, an increase of 44 basis points compared to the third quarter of 2018. For the nine months ended September 30, 2019, the average rate paid on interest-bearing liabilities was 1.59%, an increase of 56 basis points compared to the same period of 2018. Total deposit costs increased 38 basis points when comparing the quarters and 45 basis points when comparing the year-to-date periods. Deposit costs were driven upward by the repricing of deposits, higher-cost brokered deposit issuances, and higher rates paid on promotional deposit offerings as a result of market competition.

62

The following table displays the dollar amount of changes in interest income and interest expense for major components of earning assets and interest-bearing liabilities. The table distinguishes between (i) changes attributable to volume (changes in average volume between periods times the average yield/rate for the two periods), (ii) changes attributable to rate (changes in average rate between periods times the average volume for the two periods), and (iii) total increase (decrease). Changes attributable to both volume and rate are allocated ratably between the volume and rate categories.

TABLE 4 - SUMMARY OF CHANGES IN NET INTEREST INCOME

	Three months ended September 30, 2019 compared to September 30, 2018									Nine months ended September 30, 2019 compared to September 30, 2018
	Change Attributable To									Change Attributable To
(in thousands)	Volume			Rate			Net Increase (Decrease)			Volume			Rate			Net Increase (Decrease)
Earning assets:
Loans and leases:
Commercial loans and leases	$	16,292		$	(1,956	)	$	14,336		$	41,372		$	29,077		$	70,449
Residential mortgage loans	3,998			(1,204		)	2,794			22,376			(4,074		)	18,302
Consumer and other loans	(4,679		)	1,214			(3,465		)	(8,256		)	6,190			(2,066		)
Mortgage loans held for sale	1,168			(269		)	899			1,974			(423		)	1,551
Investment securities	(3,250		)	3,389			139			(2,610		)	15,258			12,648
Other earning assets	1,723			(315		)	1,408			1,196			1,716			2,912
Net change in income on earning assets	15,252			859			16,111			56,052			47,744			103,796
Interest-bearing liabilities:
Deposits:
NOW accounts	328			2,136			2,464			465			9,318			9,783
Savings and money market accounts	124			9,759			9,883			837			35,639			36,476
Time deposits	7,603			6,402			14,005			19,073			22,718			41,791
Borrowings	(1,564		)	1,215			(349		)	1,851			6,966			8,817
Net change in expense on interest-bearing liabilities	6,491			19,512			26,003			22,226			74,641			96,867
Change in net interest income	$	8,761		$	(18,653	)	$	(9,892	)	$	33,826		$	(26,897	)	$	6,929

Provision for Credit Losses

The provision for credit losses represents the expense necessary to maintain the ACL at a level that in management's judgment is appropriate to absorb probable losses inherent in the portfolio at the balance sheet date.

The provision for credit losses totaled $9.0 million for the third quarter of 2019, a $2.4 million, or 21%, decrease compared to the same period in 2018, attributable to an improvement in asset quality and lower net charge-offs. For the nine months ended September 30 2019, the provision for credit losses of $33.5 million was a $6.2 million increase from the comparable 2018 period. The increase in the provision for credit losses during the year-to-date period was largely due to organic loan growth.

The Company's provision for loan and lease losses covered 135% of net charge-offs in the first nine months of 2019 compared to 107% coverage for the same period of 2018.

Refer to the "Asset Quality" section for further discussion on past due loans, non-performing assets, troubled debt restructurings and the allowance for credit losses.

63

Non-interest Income

Non-interest income was $63.7 million for the three months ended September 30, 2019 compared to $53.1 million for the same period of 2018, a $10.6 million, or 20%, increase. The increase was primarily attributable to a $4.7 million increase in mortgage income, primarily driven by higher sales volume during the third quarter of 2019 and a $3.2 million gain on non-mortgage loan sales. In addition, commission income increased $1.5 million due to higher customer swap commissions.

On a year-to-date basis, non-interest income was $175.0 million compared to $151.6 million for the same period of 2018, a $23.4 million, or 15%, increase. The increase was driven by a $11.7 million increase in mortgage income, the result of an increase in sales volume, higher margins on the sale of mortgage loans, and favorable fair value adjustments. Additionally, commission income increased $5.6 million due to higher customer swap commissions. The Company also realized a $3.2 million gain on non-mortgage loan sales.

Non-interest Expense

Non-interest expense was $172.7 million for the third quarter of 2019, an increase of $3.6 million, or 2%, when compared to the same period of 2018.

Salaries and employee benefits, the largest category of non-interest expense, increased $2.1 million for the third quarter of 2019 when compared to the same period of 2018. An additional business day during the quarter, off-cycle pay increases, and higher share-based compensation expenses from current period grants contributed to a $2.5 million increase in compensation expense. Benefit expenses increased $1.6 million due to lower medical insurance expense in 2018. These increases were partially offset by a $1.6 million decrease in severance, retention, and other merger-related compensation expenses when comparing the periods.

Occupancy and equipment expense increased $2.4 million primarily from a write-off on certain long-lived assets.

Other non-interest expense increased $2.1 million primarily from a $1.8 million credit valuation adjustment on customer swaps.

These increases in non-interest expense were partially offset by a $1.7 million decrease in insurance expense, driven by the elimination of the FDIC large bank surcharge and a lower assessment rate in 2019.

Non-interest expense was $501.0 million for the nine months ended September 30, 2019, a decrease of $52.9 million, or 10%, compared to the same period of 2018.

Salaries and employee benefits decreased $8.3 million for the year-to-date period of 2019 compared to the same period of 2018 as severance, retention, and other merger-related compensation expenses decreased $12.1 million. These decreases were partially offset by a $2.8 million increase in share-based compensation expense.

Impairment of long-lived assets and other (gains) losses decreased $23.7 million due to branch consolidation and closure expenses incurred in 2018.

Insurance expense decreased $7.3 million, driven by the elimination of the FDIC large bank surcharge and a lower assessment rate in 2019. Professional services expense decreased $3.1 million and computer services expense decreased $2.6 million, as a result of system conversion and other merger-related expenses incurred in 2018.

64

Income Taxes

The Company recorded income tax expense of $31.5 million for the three months ended September 30, 2019 and $30.4 million for the three months ended September 30, 2018, which resulted in an effective income tax rate of 24.0% and 23.1%, respectively. For the nine months ended September 30, 2019, the Company recorded income tax expense of $94.0 million and $78.4 million for the same period of 2018, which resulted in an effective income tax rate of 23.8% and 24.6%, respectively.

The difference between the Company's effective tax rate and the U.S. statutory tax rates of 21% primarily relates to tax-exempt income, non-deductible expenses, state income taxes (net of federal income tax benefit), and the recognition of tax credits. The effective tax rate may vary significantly due to fluctuations in the amount and source of pretax income, changes in amounts of non-deductible expenses, and timing of the recognition of tax credits.

The Company is currently under audit by the Internal Revenue Service for the years 2014 to 2017.

ANALYSIS OF FINANCIAL CONDITION

Loans and Leases

The Company had total loans and leases of $23.7 billion at September 30, 2019, an increase of $1.2 billion, or 5%, from December 31, 2018. The increase was a result of legacy loan growth of $2.3 billion, or 13%, offset by pay-downs and pay-offs on loans, primarily from prior period acquisitions.

Loans and leases outstanding at September 30, 2019 and December 31, 2018 are presented in the following table.

TABLE 5—SUMMARY OF LOANS

	September 30, 2019				December 31, 2018				$ Change		% Change
(in thousands)	Balance		Mix		Balance		Mix
Commercial loans and leases:
Real estate- construction	$	1,330,014	6	%	$	1,196,366	5	%	133,648		11
Real estate- owner-occupied	2,468,061		10		2,395,822		11		72,239		3
Real estate- non-owner occupied	6,011,681		25		5,796,117		26		215,564		4
Commercial and industrial (1)	6,490,125		27		5,737,017		25		753,108		13
Total commercial loans and leases	16,299,881		68		15,125,322		67		1,174,559		8
Residential mortgage loans	4,649,745		20		4,359,156		19		290,589		7
Consumer and other loans:
Home equity	2,053,588		9		2,304,694		10		(251,106	)	(11	)
Other	673,323		3		730,643		4		(57,320	)	(8	)
Total consumer and other loans	2,726,911		12		3,035,337		14		(308,426	)	(10	)
Total loans and leases	$	23,676,537	100	%	$	22,519,815	100	%	1,156,722		5

(1) Includes equipment financing leases

Loan Portfolio Segments

The Company believes its loan portfolio is diversified by product and geography throughout its footprint. Loan growth thus far in 2019 was strongest in the the Energy Group (primarily reserve-based and midstream lending), Corporate Asset Finance Group (equipment financing and leasing business), and the Birmingham, Dallas and New Orleans markets. Loans in the Energy Group increased $429.9 million, or 47% since December 31, 2018. The Corporate Asset Finance Group grew loans and leases $268.4 million, or 53%, thus far in 2019. In the first nine months of 2019, the Birmingham market grew loans $118.1 million, or 12%. The Dallas market grew loans $109.0 million, or 16%, and the New Orleans market grew loans $106.0 million, or 5%.

The Company’s loan to deposit ratio was 95% at both September 30, 2019 and December 31, 2018. The percentage of fixed-rate loans to total loans was approximately 39% at September 30, 2019 compared to 39% at the end of 2018.

65

In order to assess the risk characteristics of the loan portfolio, the Company considers the current U.S. economic environment and that of its primary market areas. See Note 5, Allowance for Credit Losses, to the unaudited consolidated financial statements for credit quality factors by loan portfolio segment.

Commercial Loans and Leases

Total commercial loans and leases increased $1.2 billion, or 8%, from December 31, 2018. Commercial loans and leases increased to 68% of the total portfolio at September 30, 2019 compared to 67% at December 31, 2018. Unfunded commitments on commercial loans including approved loan commitments not yet funded were $6.6 billion at September 30, 2019, an increase of $543.6 million, or 9%, when compared to the end of the prior year.

Commercial real estate loans include loans to commercial customers for medium-term financing of land and buildings or for land development or construction of a building. These loans are repaid from revenues through operations of the businesses, rents of properties, sales of properties and refinances. The Company's underwriting standards generally provide for loan terms of three to seven years, with amortization schedules of generally no more than twenty-five years. Low loan-to-value ratios are generally maintained and usually limited to no more than 80% at the time of origination. The commercial real estate portfolio is comprised of approximately 14% construction loans, 25% owner-occupied loans, and 61% non-owner-occupied loans as of September 30, 2019, relatively consistent with 13%, 25%, and 62%, respectively, at December 31, 2018. Commercial real estate loans increased $421.5 million, or 4%, during the first nine months of 2019, from loan growth across multiple markets, primarily in the Atlanta, Dallas, Naples, New Orleans, and South Florida markets.

Commercial and industrial loans and leases represent loans to commercial customers to finance general working capital needs, equipment purchases and leases and other projects where repayment is derived from cash flows resulting from business operations. The Company originates C&I loans and leases on a secured and, to a lesser extent, unsecured basis. C&I loans may be term loans or revolving lines of credit. Term loans are generally structured with terms of no more than three to seven years, with amortization schedules of generally no more than fifteen years. C&I term loans and leases are generally secured by equipment, machinery, or other corporate assets. Revolving lines of credit are generally structured as advances upon perfected security interests in accounts receivable and inventory and generally have annual maturities.

As of September 30, 2019, commercial and industrial loans and leases totaled $6.5 billion, a $753.1 million, or 13%, increase from December 31, 2018, primarily driven by growth in the Company's Energy and Corporate Assets Finance Groups. Commercial and industrial loans and leases comprised 27% of the total portfolio at September 30, 2019 and 25% at December 31, 2018.

The following table details the Company’s commercial loans and leases by state.

TABLE 6—COMMERCIAL LOANS AND LEASES BY STATE OF ORIGINATION

(in thousands)	September 30, 2019		December 31, 2018		$ Change		% Change
Louisiana	$	3,601,291	$	3,521,596	79,695		2
Florida	4,779,476		4,756,957		22,519		—
Alabama	1,427,892		1,289,146		138,746		11
Texas (1)	2,773,770		2,310,642		463,128		20
Georgia	1,121,622		1,078,983		42,639		4
Arkansas	753,634		711,484		42,150		6
Tennessee	555,281		584,119		(28,838	)	(5	)
New York	66,072		44,026		22,046		50
South Carolina and North Carolina	155,064		92,800		62,264		67
Other (2)	1,065,779		735,569		330,210		45
Total	$	16,299,881	$	15,125,322	1,174,559		8

⁽¹⁾  Texas loans include $1.3 billion and $911.5 million in Energy Group loans at September 30, 2019 and December 31, 2018, respectively.

⁽²⁾  Other loans include primarily equipment financing and corporate asset financing leases, which the Company does not classify by state.

66

Residential Mortgage Loans

Residential mortgage loans consist of loans to consumers to finance a primary residence. The residential mortgage loan portfolio is comprised of non-conforming 1-4 family mortgage loans secured by properties located in the Company's market areas. The residential mortgage loan portfolio is originated under terms and documentation that permit their sale in a secondary market. The larger mortgage loans of current and prospective private banking clients are generally retained to enhance relationships, but also tend to be more profitable due to the expected shorter durations and relatively lower servicing costs associated with loans of this size. The Company does not originate or hold negative amortization, option ARM, or other exotic mortgage loans in its portfolio. The Company makes insignificant investments in loans that would be considered sub-prime (e.g., loans with a credit score of less than 620) in order to facilitate compliance with relevant Community Reinvestment Act regulations.

Total residential mortgage loans increased $290.6 million, or 7%, compared to December 31, 2018, primarily the result of growth in the Houston, Atlanta, New Orleans, Dallas and Tampa markets.

Consumer and Other Loans

The Company offers consumer loans in order to provide a full range of retail financial services to customers in the communities in which it operates. The Company originates substantially all of its consumer loans in its primary market areas. At September 30, 2019, $2.7 billion, or 12%, of the total portfolio was comprised of consumer loans, compared to $3.0 billion, or 14%, at the end of 2018.

The majority of the consumer loan portfolio is comprised of home equity loans, which allow customers to borrow against the equity in their home and are secured by a first or second mortgage on the borrower’s residence. Home equity loans were $2.1 billion at September 30, 2019, a decrease of $251.1 million from December 31, 2018. Unfunded commitments related to home equity loans and lines were $1.1 billion at September 30, 2019, an increase of $49.4 million, or 5%, from the end of 2018.

All other consumer loans, which consist of credit card loans, automobile loans and other personal loans, decreased $57.3 million, or 8%, from December 31, 2018, primarily from decreases in other personal loans and indirect automobile loans, a product that is no longer offered.

Additional information on the Company’s consumer loan portfolio is presented in the following tables. For the purposes of Table 8, unscoreable consumer loans have been included with loans with credit scores below 660. Credit scores reflect the most recent information available as of the dates indicated.

TABLE 7—CONSUMER LOANS BY STATE OF ORIGINATION

(in thousands)	September 30, 2019		December 31, 2018		$ Change		% Change
Louisiana	$	1,005,490	$	1,072,628	(67,138	)	(6	)
Florida	831,748		956,159		(124,411	)	(13	)
Alabama	239,903		268,998		(29,095	)	(11	)
Texas	109,010		126,562		(17,552	)	(14	)
Georgia	124,584		142,067		(17,483	)	(12	)
Arkansas	195,697		216,817		(21,120	)	(10	)
Tennessee	65,077		78,013		(12,936	)	(17	)
New York	38,738		46,146		(7,408	)	(16	)
South Carolina and North Carolina	3,378		214		3,164		NM
Other (1)	113,286		127,733		(14,447	)	(11	)
Total	$	2,726,911	$	3,035,337	(308,426	)	(10	)

⁽¹⁾  Other loans include primarily credit card and indirect consumer loans, which the Company does not classify by state.

NM - not meaningful

67

TABLE 8—CONSUMER LOANS BY CREDIT SCORE

(in thousands)	September 30, 2019		December 31, 2018
Above 720	$	1,593,693	$	1,708,417
660-720	547,779		666,132
Below 660	585,439		660,788
Total consumer loans	$	2,726,911	$	3,035,337

Mortgage Loans Held for Sale

Mortgage loans held for sale totaled $255.3 million at September 30, 2019, an increase of $147.5 million, or 137%, from $107.7 million at year-end 2018, as originations have outpaced sales activity during the first three quarters of 2019. The Company sells the majority of conforming mortgage loan originations in the secondary market rather than assume the interest rate risk associated with these longer term assets. Upon the sale, the Company retains servicing on a limited portion of these loans. Loans held for sale are primarily fixed-rate single-family residential mortgage loans under contracts to be sold in the secondary market. In most cases, loans in this category are sold within thirty days of closing. Buyers generally have recourse to return a purchased loan to the Company under limited circumstances.

See Note 1, Summary of Significant Accounting Policies, in the Annual Report on Form 10-K for the year ended December 31, 2018, for further discussion.

Investment Securities

Investment securities decreased $567.9 million, or 11%, since December 31, 2018 to $4.4 billion at September 30, 2019, primarily due to sales of available-for-sale securities, partially offset by increases in unrealized gains on the AFS portfolio. Approximately 96% of the Company's investment portfolio is in available-for-sale securities, which experience unrealized gains when interest rates fall. Investment securities approximated 14% and 16% of total assets at September 30, 2019 and December 31, 2018, respectively.

All of the Company's mortgage-backed securities were issued by government-sponsored enterprises at September 30, 2019 and December 31, 2018. The Company does not hold any Fannie Mae or Freddie Mac preferred stock, corporate equity, collateralized debt obligations, collateralized loan obligations, or structured investment vehicles, nor does it hold any private label collateralized mortgage obligations, subprime, Alt-A, sovereign debt, or second lien elements in its investment portfolio. At September 30, 2019 and December 31, 2018, the Company's investment portfolio did not contain any securities that are directly backed by subprime or Alt-A mortgages.

Funds generated as a result of sales and prepayments of investment securities are used to fund loan growth and purchase other securities. The Company continues to monitor market conditions and take advantage of market opportunities with appropriate risk and return elements.

Asset Quality

The lending activities of the Company are governed by underwriting policies established by management and approved by the Board Risk Committee of the Board of Directors. For additional information on loan underwriting, loan origination, monitoring of loan payment performance, loan review, and the determination of past due and non-accrual status, as well as the Company's policies for recording payments received, placing loans and leases on non-accrual status, and the resumption of interest accrual on non-accruing loans and leases, see Note 1, Summary of Significant Accounting Policies, and the "Asset Quality" section of MD&A in the Annual Report on Form 10-K for the year ended December 31, 2018.

For commercial loans and leases, the Company utilizes regulatory classification ratings to monitor credit quality. For further discussion of regulatory classification ratings, see Note 5, Allowance for Credit Losses, to the unaudited consolidated financial statements. For residential mortgage loans and consumer loans, the Company primarily uses the loan's payment and delinquency status to monitor credit quality. These credit quality indicators are continually updated and monitored.

Real estate acquired by the Company through foreclosure or by deed-in-lieu of foreclosure is classified as OREO, and is recorded at the lesser of the related loan balance (the pro-rata carrying value for acquired loans) or estimated fair value less costs to sell. Closed bank branches are also classified as OREO and recorded at the lower of cost or market value.

68

Under GAAP, certain loan modifications or restructurings are designated as TDRs. In general, the modification or restructuring of a debt constitutes a TDR if the Company, for economic or legal reasons related to the borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider under current market conditions. See Note 1, Summary of Significant Accounting Policies, in the 2018 10-K for further details.

Non-performing Assets and Troubled Debt Restructurings

The Company defines non-performing assets as non-accrual loans, accruing loans more than 90 days past due, OREO, and foreclosed property. Management continuously monitors and transfers loans to non-accrual status when warranted.

The Company accounts for loans acquired with deteriorated credit quality, as well as all loans acquired with significant discounts that did not exhibit deteriorated credit quality at acquisition, in accordance with ASC Topic 310-30. Collectively, all loans accounted for under ASC 310-30 are referred to as "acquired impaired loans." Application of ASC Topic 310-30 results in significant accounting differences, compared to loans originated or acquired by the Company that are not accounted for under ASC 310-30. See Note 1, Summary of Significant Accounting Policies, in the 2018 10-K for further details.

Due to the significant difference in accounting for acquired impaired loans, the Company believes inclusion of these loans in certain asset quality ratios that reflect non-performing assets in the numerator or denominator (or both) results in significant distortion to these ratios, as the inclusion of these loans could result in a lack of comparability across quarters or years, and could impact comparability with other portfolios that were not impacted by acquired impaired loan accounting. The Company believes that the presentation of certain asset quality measures excluding acquired impaired loans, as indicated below, and related amounts from both the numerator and denominator provides better perspective into underlying trends related to the quality of its loan portfolio. Accordingly, the asset quality measures in the tables below present asset quality information excluding acquired impaired loans, as indicated within each table.

The following table sets forth the composition of the Company’s non-performing assets and TDRs for the periods indicated.

TABLE 9—NON-PERFORMING ASSETS AND TROUBLED DEBT RESTRUCTURINGS

(in thousands)	September 30, 2019			December 31, 2018			$ Change		% Change
Non-accrual loans and leases:
Commercial	$	82,234		$	85,112		(2,878	)	(3	)
Mortgage	50,439			30,396			20,043		66
Consumer and other	20,440			21,676			(1,236	)	(6	)
Total non-accrual loans and leases	153,113			137,184			15,929		12
Accruing loans and leases 90 days or more past due	4,790			2,128			2,662		125
Total non-performing loans and leases (2) (3)	157,903			139,312			18,591		13
OREO and foreclosed property (1)	27,075			30,394			(3,319	)	(11	)
Total non-performing assets	184,978			169,706			15,272		9
Performing troubled debt restructurings	73,518			80,807			(7,289	)	(9	)
Total non-performing assets and performing troubled debt restructurings	$	258,496		$	250,513		7,983		3
Non-performing loans and leases to total loans and leases (3)	0.67		%	0.62		%
Non-performing assets to total assets	0.58		%	0.55		%
Non-performing assets and performing troubled debt restructurings to total assets (1)	0.81		%	0.81		%
Allowance for credit losses to non-performing loans and leases	102.83		%	111.55		%
Allowance for credit losses to total loans and leases	0.69		%	0.69		%

⁽¹⁾  OREO and foreclosed property at September 30, 2019 and December 31, 2018 include $3.1 million and $9.0 million, respectively, of former bank properties held for development or resale.

⁽²⁾  Total non-performing loans and leases for September 30, 2019 and December 31, 2018 include $65.6 million and $61.5 million, respectively, of non-performing troubled debt restructurings.

⁽³⁾  Non-performing loans exclude acquired impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans.

69

Total non-performing assets increased $15.3 million, or 9%, compared to December 31, 2018, as non-performing loans and leases increased $18.6 million and OREO and foreclosed property decreased $3.3 million. Non-performing loans and leases increased 13% primarily attributable to an increase in non-accrual mortgage loans, as a small number of mortgage loans moved to non-accrual in 2019.

In addition to the problem loans described above, there were $158.3 million of commercial loans classified as special mention at September 30, 2019, which in management’s opinion were subject to potential future rating downgrades. Special mention loans have potential weaknesses that, if left uncorrected, may result in deterioration of the Company's credit position at some future date. Special mention loans increased $1.1 million, or 1%, from year-end 2018, and were 0.97% of total commercial loans at September 30, 2019 and 1.04% at December 31, 2018.

Past Due and Non-accrual Loans

Past due status is based on the contractual terms of loans. Total past due and non-accrual loans were 0.90% of total loans and leases at September 30, 2019 compared to 0.87% at December 31, 2018. Additional information on past due loans and leases is presented in the following table.

TABLE 10—PAST DUE AND NON-ACCRUAL LOAN SEGREGATION ⁽¹⁾ 

	September 30, 2019			December 31, 2018
(in thousands)	Amount		% of Outstanding Balance	Amount		% of Outstanding Balance	$ Change		% Change
Accruing loans and leases
30-59 days past due	$	26,391	0.11	$	38,579	0.17	(12,188	)	(32	)
60-89 days past due	28,227		0.12	18,753		0.08	9,474		51
90-119 days past due	4,645		0.02	2,128		0.01	2,517		118
120 days past due or more	145		—	—		—	145		100
	59,408		0.25	59,460		0.26	(52	)	—
Non-accrual loans and leases	153,113		0.65	137,184		0.61	15,929		12
Total past due and non-accrual loans and leases	$	212,521	0.90	$	196,644	0.87	15,877		8

⁽¹⁾  Past due and non-accrual loan amounts exclude acquired impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans.

Total past due and non-accrual loans and leases increased $15.9 million from December 31, 2018 to $212.5 million at September 30, 2019, primarily as a result of an increase in non-accrual loans. Of the total accruing past due loans, 44% were past due less than 60 days compared to 65% at year-end 2018, and 92% were past due less than 90 days compared to 96% at year-end 2018.

Allowance for Credit Losses

The allowance for credit losses represents management’s best estimate of probable credit losses inherent at the balance sheet date. Determination of the allowance for credit losses involves a high degree of complexity and requires significant judgment. Several factors are taken into consideration in the determination of the overall allowance for credit losses. Based on facts and circumstances available, management of the Company believes that the allowance for credit losses was appropriate at September 30, 2019 to cover probable losses in the Company’s loan portfolio. However, future adjustments to the allowance may be necessary, and the results of operations could be adversely affected, if circumstances differ substantially from the assumptions used by management in determining the allowance for credit losses. See “Application of Critical Accounting Policies and Estimates” included in MD&A and Note 1, Summary of Significant Accounting Policies, in the Annual Report on Form 10-K for the year ended December 31, 2018 for more information.

70

The following table sets forth the activity in the Company’s allowance for credit losses for the nine-month periods ended September 30, 2019 and 2018.

TABLE 11—SUMMARY OF ACTIVITY IN THE ALLOWANCE FOR CREDIT LOSSES

(in thousands)	September 30, 2019			September 30, 2018
Allowance for loan and lease losses at beginning of period	$	140,571		$	140,891
Provision for loan and lease losses	32,190			26,678
Transfer of balance to OREO and other	(2,696		)	(5,709		)
Charge-offs	(29,971		)	(34,740		)
Recoveries	6,141			9,830
Allowance for loan and lease losses at end of period	$	146,235		$	136,950
Reserve for unfunded commitments at beginning of period	14,830			13,208
Balance created in acquisition accounting	—			900
Provision for unfunded lending commitments	1,314			613
Reserve for unfunded lending commitments at end of period	16,144			14,721
Allowance for credit losses at end of period	$	162,379		$	151,671

The allowance for credit losses totaled $162.4 million at September 30, 2019 compared to $155.4 million at December 31, 2018. The allowance for credit losses was 0.69% of total loans and leases at both September 30, 2019 and at December 31, 2018. The increase in the allowance for credit losses was primarily the result of organic loan growth during the current period.

Net charge-offs during the nine months ended September 30, 2019 were $23.8 million, a decrease of $1.1 million from the comparable 2018 period. Net charge-offs were 0.14% of average loans and leases on an annualized basis for the nine months ended September 30, 2019 compared to 0.16% for the comparable 2018 period. The provision for loan and lease losses covered 135% and 107% of net charge-offs for the first nine months of 2019 and 2018, respectively.

At September 30, 2019 and December 31, 2018, the ALLL covered 93% and 101% of total non-performing loans and leases, respectively.

FUNDING SOURCES

Deposits, both those obtained from clients in its primary market areas and those acquired, are the Company's principal source of funds for use in lending and other business purposes. The Company attracts local deposit accounts by offering a wide variety of products, competitive interest rates and convenient branch office locations and service hours, as well as on-line banking services at www.iberiabank.com and www.virtualbank.com. Increasing core deposits is a continuing focus of the Company and has been accomplished through the development of client relationships and acquisitions. Short-term and long-term borrowings are also important funding sources for the Company. Other funding sources include subordinated debt and shareholders’ equity. Refer to the “Liquidity and Other Off-Balance Sheet Activities” section below for further discussion of the Company’s sources and uses of funding. The following discussion highlights the major changes in the mix of deposits and other funding sources during the first nine months of 2019.

Deposits

Total deposits increased $1.2 billion, or 5%, to $25.0 billion at September 30, 2019, from $23.8 billion at December 31, 2018, primarily driven by a $559.1 million increase in brokered and reciprocal deposits and a $302.2 million increase in jumbo time deposits. Deposit growth during the year thus far was strongest in the Miami-Dade and Southwest Louisiana markets.

71

The following table sets forth the composition of the Company’s deposits as of the dates indicated.

TABLE 12—DEPOSIT COMPOSITION BY PRODUCT

	September 30, 2019				December 31, 2018
(in thousands)	Ending Balance		Mix		Ending Balance		Mix		$ Change		% Change
Non-interest-bearing deposits	$	6,518,783	26	%	$	6,542,490	28	%	(23,707	)	NM
NOW accounts	4,503,353		18		4,514,113		19		(10,760	)	NM
Money market accounts	8,654,605		35		8,237,291		35		417,314		5
Savings accounts	671,156		3		828,914		3		(157,758	)	(19	)
Time deposits	4,629,388		18		3,640,623		15		988,765		27
Total deposits	$	24,977,285	100	%	$	23,763,431	100	%	1,213,854		5
NM - not meaningful

Short-term Borrowings

The Company may obtain advances from the FHLB of Dallas based upon its ownership of FHLB stock and certain pledges of its real estate loans and investment securities, provided certain standards related to the Company’s creditworthiness have been met. These advances are made pursuant to several credit programs, each of which has its own interest rate and range of maturities. The level of short-term borrowings can fluctuate significantly on a daily basis depending on funding needs and the source of funds chosen to satisfy those needs.

The Company also enters into repurchase agreements to facilitate customer transactions that are accounted for as secured borrowings. These transactions typically involve the receipt of deposits from customers that the Company collateralizes with its investment portfolio and had an average rate of 42.4 basis points as of September 30, 2019.

Total short-term borrowings decreased $984.8 million, or 66%, from December 31, 2018, to $498.0 million at September 30, 2019, primarily due to net advance repayments on short-term FHLB advances. On a period-end basis, short-term borrowings were 2% of total liabilities and 26% of total borrowings at September 30, 2019 compared to 6% and 56%, respectively, at December 31, 2018.

On a quarter-to-date average basis, short-term borrowings decreased $402.1 million, or 34%, from the third quarter of 2018 and were 3% of total liabilities and 37% of total borrowings in the third quarter of 2019, compared to 5% and 46%, respectively, during the same period of 2018.

Long-term Debt

Long-term debt increased $228.1 million, or 20%, from December 31, 2018, to $1.4 billion at September 30, 2019, primarily due to additional long-term FHLB advances made in 2019. On a period-end basis, long-term debt was 5% and 4% of total liabilities at September 30, 2019 and December 31, 2018, respectively.

On a quarter-to-date average basis, long-term debt decreased to $1.4 billion in the third quarter of 2019, $20.5 million, or 1%, lower than the third quarter of 2018, mainly due to lower levels of long-term FHLB advances held by the Company in the third quarter of 2019.

Long-term debt at September 30, 2019 included $1.2 billion in fixed-rate advances from the FHLB of Dallas that cannot be prepaid without incurring substantial penalties. The remaining debt consisted of $120.1 million of the Company’s junior subordinated debt and $35.0 million in notes payable on investments in new market tax credit entities.

72

CAPITAL RESOURCES

Shareholders' Equity

Shareholders' equity increased $227.0 million, or 6%, during the first nine months of 2019. The increase in shareholders' equity during the period was driven by undistributed income of $223.7 million. In addition, the Company issued and sold Non-Cumulative Perpetual Preferred Stock, Series D, for $96.4 million in net proceeds. See Note 9, Shareholders' Equity, Capital Ratios, and Other Regulatory Matters, to the unaudited consolidated financial statements for more information. Shareholders' equity also increased during the period from an increase in accumulated other comprehensive income of $96.7 million, primarily resulting from unrealized gains on the Company's available-for-sale securities portfolio.

These increases in shareholders' equity were partially offset by common stock repurchases. During the first nine months of 2019, the Company repurchased 2,700,000 common shares for $204.7 million at a weighted average cost of $75.83 per share. At September 30, 2019, the remaining common shares that could be repurchased under the current Board-approved plan was 1,165,000 shares. Refer to Note 9, Shareholders' Equity, Capital Ratios, and Other Regulatory Matters, to the unaudited consolidated financial statements for further detail on the Company's common stock repurchase plan.

The Company's quarterly dividend to common shareholders was $0.45 per common share in the third quarter of 2019 compared to $0.39 in the third quarter of 2018. For the nine months ended September 30, 2019, the Company's dividend of $1.31 per common share was an increase of $0.16 compared to $1.15 for the comparable nine-month period of 2018, which equated to a dividend payout ratio of 23.8% for the current year, down from 27.7% in 2018.

Regulatory Capital

Federal regulations impose minimum regulatory capital requirements on all institutions with deposits insured by the FDIC. The FRB imposes similar capital regulations on bank holding companies. Compliance with bank and bank holding company regulatory capital requirements, which include leverage and risk-based capital guidelines, are monitored by the Company on an ongoing basis. Under the risk-based capital method, a risk weight is assigned to balance sheet and off-balance sheet items based on regulatory guidelines.

At September 30, 2019 and December 31, 2018, the Company exceeded all required regulatory capital ratios, and the regulatory capital ratios of IBERIABANK were in excess of the levels established for “well-capitalized” institutions, as shown in the following table.

TABLE 13—REGULATORY CAPITAL RATIOS

Ratio	Entity	Well- Capitalized Minimums		September 30, 2019		December 31, 2018
				Actual		Actual
Tier 1 Leverage	IBERIABANK Corporation	N/A		9.78	%	9.63	%
	IBERIABANK	5.00	%	9.49		9.38
Common Equity Tier 1 (CET1)	IBERIABANK Corporation	N/A		10.41		10.72
	IBERIABANK	6.50	%	10.95		10.95
Tier 1 Risk-Based Capital	IBERIABANK Corporation	N/A		11.28		11.25
	IBERIABANK	8.00	%	10.95		10.95
Total Risk-Based Capital	IBERIABANK Corporation	N/A		12.34		12.33
	IBERIABANK	10.00	%	11.57		11.58

Minimum capital ratios are subject to a capital conservation buffer. In order to avoid limitations on distributions, including dividend payments, and certain discretionary bonus payments to executive officers, an institution must hold a capital conservation buffer above its minimum risk-based capital requirements. This capital conservation buffer is calculated as the lowest of the differences between the actual CET1 ratio, Tier 1 Risk-Based Capital Ratio, and Total Risk-Based Capital ratio and the corresponding minimum ratios. At September 30, 2019, the required minimum capital conservation buffer was 2.50%. At September 30, 2019, the capital conservation buffers of the Company and IBERIABANK were 4.34% and 3.57%, respectively.

73

LIQUIDITY AND OTHER OFF-BALANCE SHEET ACTIVITIES

Liquidity refers to the Company’s ability to generate sufficient cash flows to support its operations and to meet its obligations, including the withdrawal of deposits by customers, commitments to originate loans, and its ability to repay its borrowings and other liabilities. Liquidity risk is the risk to earnings or capital resulting from the Company’s inability to fulfill its obligations as they become due. Liquidity risk also develops from the Company’s failure to timely recognize or address changes in market conditions that affect the ability to liquidate assets in a timely manner or to obtain adequate funding to continue to operate on a profitable basis.

The primary sources of funds for the Company are deposits and borrowings. Other sources of funds include repayments and maturities of loans and investment securities, securities sold under agreements to repurchase, and, to a lesser extent, off-balance sheet borrowing availability. Time deposits scheduled to mature in one year or less at September 30, 2019 totaled $4.2 billion. Based on past experience, management believes that a significant portion of maturing deposits will remain with the Company. Additionally, the majority of the investment securities portfolio is classified as available for sale, which provides the ability to liquidate unencumbered securities as needed. Of the $4.4 billion in the investment securities portfolio, $2.3 billion is unencumbered and $2.1 billion has been pledged to support repurchase transactions, public funds deposits and certain long-term borrowings. Due to the relatively short implied duration of the investment securities portfolio, the Company has historically experienced consistent cash inflows on a regular basis. Securities cash flows are highly dependent on prepayment speeds and could change materially as economic or market conditions change. 

Scheduled cash flows from the amortization and maturities of loans and securities are relatively predictable sources of funds. Conversely, deposit flows, prepayments of loans and securities, and draws on customer letters and lines of credit are greatly influenced by general interest rates, economic conditions, competition, and customer demand. The FHLB of Dallas provides an additional source of liquidity to make funds available for general requirements and also to assist with the variability of less predictable funding sources. At September 30, 2019, the Company had $1.5 billion in outstanding FHLB advances, $275.0 million of which was short-term and $1.2 billion that was long-term. Additional FHLB borrowing capacity available at September 30, 2019 amounted to $8.4 billion. At September 30, 2019, the Company also had various funding arrangements with the Federal Reserve discount window and commercial banks providing up to $334.0 million in the form of federal funds and other lines of credit. At September 30, 2019, there were no balances outstanding on these lines and all of the funding was available to the Company.

Liquidity management is both a daily and long-term function of business management. The Company manages its liquidity with the objective of maintaining sufficient funds to respond to the predicted needs of depositors and borrowers and to take advantage of investments in earning assets and other earnings enhancement opportunities. Excess liquidity is generally invested in short-term investments such as overnight deposits. On a longer-term basis, the Company maintains a strategy of investing in various lending and investment security products. The Company uses its sources of funds primarily to fund loan commitments and meet its ongoing commitments associated with its operations. Based on its available cash at September 30, 2019 and current deposit modeling, the Company believes it has adequate liquidity to fund ongoing operations. The Company has adequate availability of funds from deposits, borrowings, repayments and maturities of loans and investment securities to provide the Company additional working capital if needed.

In the normal course of business, the Company is a party to a number of activities that contain credit, market and operational risk that are not reflected in whole or in part in the Company’s consolidated financial statements. Such activities include traditional off-balance sheet credit-related financial instruments. The Company provides customers with off-balance sheet credit support through loan commitments, lines of credit, and standby letters of credit. Many of the commitments are expected to expire unused or be only partially used; therefore, the total amount of commitments does not necessarily represent future cash requirements. Based on its available liquidity and available borrowing capacity, the Company anticipates it will continue to have sufficient funds to meet its current commitments.

74

ASSET/LIABILITY MANAGEMENT, MARKET RISK AND COUNTERPARTY CREDIT RISK

The principal objective of the Company’s asset and liability management function is to evaluate the Company's interest rate risk included in certain balance sheet accounts, determine the appropriate level of risk given the Company’s business focus, operating environment, capital and liquidity requirements, and performance objectives, establish prudent asset concentration guidelines and manage the risk consistent with Board approved guidelines. Through such management, the Company seeks to reduce the vulnerability of its operations to changes in interest rates. The Company’s actions in this regard are taken under the guidance of the Asset and Liability Committee. The Asset and Liability Committee reviews, among other things, the sensitivity of the Company’s assets and liabilities to interest rate changes, local and national market conditions, and interest rates. In connection therewith, the Asset and Liability Committee generally reviews the Company’s liquidity, cash flow needs, composition of investments, deposits, borrowings, and capital position.

The objective of interest rate risk management is to control the effects that interest rate fluctuations have on net interest income and on the net present value of the Company’s earning assets and interest-bearing liabilities. Management and the Board are responsible for managing interest rate risk and employing risk management policies that monitor and limit this exposure. Interest rate risk is measured using net interest income simulation and asset/liability net present value sensitivity analyses. The Company uses financial modeling to measure the impact of changes in interest rates on the net interest margin and to predict market risk. Estimates are based upon numerous assumptions including the nature and timing of interest rate levels including yield curve shape, prepayments on loans and securities, deposit decay rates, pricing decisions on loans and deposits, reinvestment/replacement of asset and liability cash flows, and others. These analyses provide a range of potential impacts on net interest income and portfolio equity caused by interest rate movements.

Included in the modeling are instantaneous parallel rate shift scenarios, which are utilized to establish exposure limits. These scenarios are known as “rate shocks” because all rates are modeled to change instantaneously by the indicated shock amount, rather than a gradual rate shift over a period of time.

The Company’s interest rate risk model indicates that the Company is asset sensitive in terms of interest rate sensitivity. Based on the Company’s interest rate risk model at September 30, 2019, the table below illustrates the impact of an immediate and sustained 100 and 200 basis points parallel increase or decrease in interest rates on net interest income over the next twelve months.

TABLE 14—INTEREST RATE SENSITIVITY

Shift in Interest Rates (in bps)	% Change in Projected Net Interest Income
+200	+3.8%
+100	+2.3%
-100	-6.1%
-200	-12.6%

The influence of using the forward curve as of September 30, 2019 as a basis for projecting the interest rate environment would approximate a 0.6% decrease in net interest income over the next 12 months. The computations of interest rate risk shown above are performed on a static balance sheet and do not necessarily include certain actions that management may undertake to manage this risk in response to unanticipated changes in interest rates and other factors to include shifts in deposit behavior.

The short-term interest rate environment is primarily a function of the monetary policy of the FRB. The principal tools of the FRB for implementing monetary policy are open market operations, or the purchases and sales of U.S. Treasury and Federal agency securities, as well as the establishment of a short-term target rate. The FRB’s objective for open market operations has varied over the years, but the focus has gradually shifted toward attaining a specified level of the Federal funds rate to achieve the long-run goals of price stability and sustainable economic growth. The Federal funds rate is the basis for overnight funding and drives the short end of the yield curve. Longer maturities are influenced by the market’s expectations for economic growth and inflation, but can also be influenced by FRB purchases and sales and expectations of monetary policy going forward.

75

The FOMC of the FRB, in an attempt to stimulate the overall economy, has, among other things, kept interest rates low through its targeted federal funds rate. While the FOMC continues to observe sustained economic activity, strong labor market conditions, and stable inflation, it has signaled a pause in its recent efforts to increase the federal funds rate and made recent cuts of 25 basis points each in July and September of 2019. Additionally, recent FOMC rhetoric has pointed to continuing to lower the federal funds rate given low inflation measures and overall global economic headwinds. Decreases in the federal funds rate could cause overall interest rates to fall, which may negatively impact financial performance from greater borrower refinancing incentives. Increases in the federal funds rate and the unwinding of its balance sheet could cause overall interest rates to rise, which may negatively impact the U.S. real estate markets and affect deposit growth and pricing. In addition, deflationary pressures, while possibly lowering our operating costs, could have a significant negative effect on our borrowers, especially our business borrowers, and the values of collateral securing loans, which could negatively affect our financial performance.

The Company’s commercial loan portfolio is also impacted by fluctuations in the level of one-month LIBOR, as a large portion of this portfolio reprices based on this index, and to a lesser extent Prime. Net interest income may be reduced if more interest-earning assets than interest-bearing liabilities reprice or mature during a period when interest rates are declining, or if more interest-bearing liabilities than interest-earning assets reprice or mature during a period when interest rates are rising.

In July 2017, the Financial Conduct Authority (the authority that regulates LIBOR) announced it intends to stop compelling banks to submit rates for the calculation of LIBOR after 2021. ARRC has proposed that SOFR is the rate that represents best practice as the alternative to LIBOR for use in derivatives and other financial contracts that are currently indexed to LIBOR. ARRC has proposed a paced market transition plan to SOFR from LIBOR and organizations are currently working on industry-wide and company-specific transition plans as it relates to derivatives and cash markets exposed to LIBOR. The Company has material contracts that are indexed to LIBOR and is monitoring this activity and evaluating the related risks.

The table below presents the Company’s anticipated repricing of loans and investment securities over the next four quarters.

TABLE 15—REPRICING OF CERTAIN EARNING ASSETS ⁽¹⁾ 

(in thousands)	4Q 2019		1Q 2020		2Q 2020		3Q 2020		Total less than one year
Investment securities	$	490,876	$	315,018	$	316,487	$	309,927	$	1,432,308
Fixed rate loans	737,365		699,072		675,137		624,427		2,736,001
Variable rate loans	11,275,883		422,065		369,346		339,291		12,406,585
Total fixed and variable rate loans	12,013,248		1,121,137		1,044,483		963,718		15,142,586
	$	12,504,124	$	1,436,155	$	1,360,970	$	1,273,645	$	16,574,894

⁽¹⁾ Amounts include expected maturities, scheduled paydowns, expected prepayments, and loans subject to caps and floors and exclude the repricing of assets from prior periods, as well as non-accrual loans and market value adjustments.

As part of its asset/liability management strategy, the Company has seen greater levels of loan originations with adjustable or variable rates of interest in commercial and consumer loan products, which typically have shorter terms than residential mortgage loans. The majority of fixed-rate, long-term, agency-conforming residential loans are sold in the secondary market to avoid bearing the interest rate risk associated with longer duration assets in the current rate environment. However, the Sabadell and Gibraltar acquisitions brought a considerable amount of jumbo, non-agency-conforming residential mortgage loan exposure onto the balance sheet, both fixed rate and variable rate in nature, which increased the overall duration of the portfolio. Considering all of this, as of September 30, 2019, $14.4 billion, or 61%, of the Company’s total loan portfolio had variable interest rates, of which $2.8 billion, or 19%, had an expected repricing date beyond the next four quarters. The Company had no significant concentration to any single borrower or industry segment at September 30, 2019.

The Company’s strategy with respect to liabilities in recent periods has been to emphasize transaction accounts, particularly non-interest or low interest-bearing transaction accounts, which are significantly less sensitive to changes in interest rates. At September 30, 2019, 81% of the Company’s deposits were in transaction and limited-transaction accounts, compared to 85% at December 31, 2018. Non-interest-bearing transaction accounts were 26% of total deposits at September 30, 2019 compared to 28% at December 31, 2018.

The behavior of non-interest-bearing deposits and other types of demand deposits is one of the most important assumptions used in determining the interest rate and liquidity risk positions. A loss of these deposits in the future would reduce the asset sensitivity of the Company’s balance sheet as interest-bearing funds would most likely be increased to offset the loss of this favorable funding source.

76

The table below presents the Company’s anticipated repricing of liabilities over the next four quarters.

TABLE 16—REPRICING OF LIABILITIES ⁽¹⁾ 

(in thousands)	4Q 2019		1Q 2020		2Q 2020		3Q 2020		Total less than one year
Time deposits	$	1,004,626	$	1,307,516	$	1,136,649	$	713,883	$	4,162,674
Short-term borrowings	498,049		—		—		—		498,049
Long-term debt	420,747		55,643		120,415		150,376		747,181
	$	1,923,422	$	1,363,159	$	1,257,064	$	864,259	$	5,407,904

⁽¹⁾ Amounts exclude the repricing of liabilities from prior periods.

As part of an overall interest rate risk management strategy, derivative instruments may also be used as an efficient way to modify the repricing or maturity characteristics of on-balance sheet assets and liabilities. Management may from time to time engage in such derivative instruments to effectively manage interest rate risk. These derivative instruments of the Company would modify net interest sensitivity to levels deemed appropriate.

IMPACT OF INFLATION OR DEFLATION AND CHANGING PRICES

The unaudited consolidated financial statements and related financial data presented herein have been prepared in accordance with GAAP, which generally require the measurement of financial position and operating results in terms of historical dollars, without considering changes in relative purchasing power over time due to inflation. Unlike most industrial companies, the majority of the Company’s assets and liabilities are monetary in nature. As a result, interest rates generally have a more significant impact on the Company’s performance than does the effect of inflation. Although fluctuations in interest rates are neither completely predictable nor controllable, the Company regularly monitors its interest rate position and oversees its financial risk management by establishing policies and operating limits. Interest rates do not necessarily move in the same direction or in the same magnitude as the prices of goods and services, since such prices are affected by inflation to a larger extent than interest rates. Although not as critical to the banking industry as to other industries, inflationary factors may have some impact on the Company’s growth, earnings, total assets and capital levels. Management does not expect inflation to be a significant factor in 2019.

Conversely, a period of deflation could affect our business, as well as all financial institutions and other industries. Deflation could lead to lower profits, higher unemployment, lower production and deterioration in overall economic conditions. In addition, deflation could depress economic activity, including loan demand and the ability of borrowers to repay loans, and consequently impair earnings through increasing the value of debt while decreasing the value of collateral for loans.

Management believes the most significant potential impact of deflation on financial results relates to the Company's ability to maintain a sufficient amount of capital to cushion against future losses. However, the Company could employ certain risk management tools to maintain its balance sheet strength in the event a deflationary scenario were to develop.

77

Non-GAAP Measures

This discussion and analysis contains financial information determined by methods other than in accordance with GAAP. The Company’s management uses these non-GAAP financial measures in their analysis of the Company’s performance. Non-GAAP measures include, but are not limited to, descriptions such as core, tangible, and pre-tax pre-provision. These measures typically adjust GAAP performance measures to exclude the effects of the amortization of intangibles and include the tax benefit associated with revenue items that are tax-exempt, as well as adjust income available to common shareholders for certain significant activities or transactions that, in management’s opinion, can distort period-to-period comparisons of the Company’s performance. Transactions that are typically excluded from non-GAAP performance measures include realized and unrealized gains/losses on former bank owned real estate, realized gains/losses on securities, income tax gains/losses, merger related charges and recoveries, litigation charges and recoveries, and debt repayment penalties. Management believes presentations of these non-GAAP financial measures provide useful supplemental information that is essential to a proper understanding of the operating results of the Company’s core businesses. These non-GAAP disclosures should not be viewed as a substitute for operating results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies. Reconciliations of GAAP to non-GAAP disclosures are presented in Table 17, with the exception of forward-looking information. The Company is unable to estimate GAAP EPS guidance without unreasonable efforts due to the nature of one-time or unusual items that cannot be predicted, and therefore has not provided this information under Regulation S-K Item 10(e)(1)(i)(B).

TABLE 17—RECONCILIATIONS OF NON-GAAP FINANCIAL MEASURES

	Three Months Ended
	September 30, 2019						September 30, 2018
(in thousands, except per share amounts)	Pre-tax		After-tax		Per share (2)		Pre-tax			After-tax			Per share (2)
Net income	$	131,359	$	99,850	$	1.89	$	131,866		$	101,465		$	1.79
Less: Preferred stock dividends	—		3,599		0.07		—			3,599			0.06
Income available to common shareholders (GAAP)	$	131,359	$	96,251	$	1.82	$	131,866		$	97,866		$	1.73
Non-interest income adjustments (1):
(Gain) loss on sale of investments	—		—		—		(1		)	(1		)	—
Non-interest expense adjustments (1):
Merger-related expense	—		—		—		973			743			0.01
Compensation-related expense	—		—		—		1,104			839			0.01
Impairment of long-lived assets, net of (gain) loss on sale	—		—		—		3,286			2,497			0.05
Gain on early termination of loss share agreements	—		—		—		(2,708		)	(2,058		)	(0.04		)
Other non-core non-interest expense	—		—		—		(1,955		)	(1,486		)	(0.02		)
Total non-interest expense adjustments	—		—		—		700			535			0.01
Core earnings (Non-GAAP)	131,359		96,251		1.82		132,565			98,400			1.74
Provision for credit losses (1)	8,986		6,829				11,384			8,652
Pre-provision earnings, as adjusted (Non-GAAP)	$	140,345	$	103,080			$	143,949		$	107,052

⁽¹⁾  Excluding preferred stock dividends and merger-related expense, after-tax amounts are calculated using a tax rate of 24%, which approximates the marginal tax rate.

⁽²⁾  Diluted per share amounts may not appear to foot due to rounding.

78

	Nine Months Ended
	September 30, 2019									September 30, 2018
(in thousands, except per share amounts)	Pre-tax			After-tax			Per share (2)			Pre-tax			After-tax			Per share (2)
Net income	$	395,627		$	301,579		$	5.58		$	318,620		$	240,210		$	4.29
Less: Preferred stock dividends	—			8,146			0.15			—			8,146			0.15
Income available to common shareholders (GAAP)	$	395,627		$	293,433		$	5.43		$	318,620		$	232,064		$	4.14
Non-interest income adjustments (1):
Loss (gain) on sale of investments	1,012			769			0.01			55			41			—
Non-interest expense adjustments (1):
Merger-related expense	(344		)	(261		)	—			31,533			24,272			0.44
Compensation-related expense	(9		)	(7		)	—			4,106			3,121			0.06
Impairment of long-lived assets, net of (gain) loss on sale	964			732			0.01			10,773			8,187			0.15
Gain on early termination of loss share agreements	—			—			—			(2,708		)	(2,058		)	(0.04		)
Other non-core non-interest expense	(3,022		)	(2,297		)	(0.04		)	(2,733		)	(2,078		)	(0.04		)
Total non-interest expense adjustments	(2,411		)	(1,833		)	(0.03		)	40,971			31,444			0.57
Income tax expense - impact of TCJA	—			—			—			—			6,572			0.12
Income tax expense - other	—			—			—			—			173			—
Core earnings (Non-GAAP)	394,228			292,369			5.41			359,646			270,294			4.83
Provision for loan losses	33,504			25,463						27,290			20,740
Pre-provision earnings, as adjusted (Non-GAAP)	$	427,732		$	317,832					$	386,936		$	291,034

⁽¹⁾  Excluding preferred stock dividends and merger-related expense, after-tax amounts are calculated using a tax rate of 24%, which approximates the marginal tax rate.

⁽²⁾  Diluted per share amounts may not appear to foot due to rounding.

79

	As of and For the Three Months Ended September 30,
(in thousands)	2019			2018
Net interest income (GAAP)	$	249,333		$	259,225
Taxable equivalent benefit	1,320			1,461
Net interest income (TE) (Non-GAAP) (1)	$	250,653		$	260,686
Non-interest income (GAAP)	$	63,674		$	53,087
Taxable equivalent benefit	468			463
Non-interest income (TE) (Non-GAAP) (1)	64,142			53,550
Taxable equivalent revenues (Non-GAAP) (1)	314,795			314,236
Securities (gains) losses and other non-interest income	—			(1		)
Core taxable equivalent revenues (Non-GAAP) (1)	$	314,795		$	314,235
Total non-interest expense (GAAP)	$	172,662		$	169,062
Less: Intangible amortization expense	4,410			5,382
Tangible non-interest expense (Non-GAAP) (2)	168,252			163,680
Less: Merger-related expense	—			973
Compensation-related expense	—			1,104
Impairment of long-lived assets, net of (gain) loss on sale	—			3,286
Gain on early termination of loss share agreements	—			(2,708		)
Other non-core non-interest expense	—			(1,955		)
Core tangible non-interest expense (Non-GAAP)(2)	$	168,252		$	162,980
Average assets (GAAP)	$	31,554,291		$	30,046,231
Less: Average intangible assets, net	1,303,636			1,309,962
Total average tangible assets (Non-GAAP) (2)	$	30,250,655		$	28,736,269
Total shareholders’ equity (GAAP)	$	4,283,300		$	3,942,361
Less: Goodwill and other intangibles	1,301,348			1,305,915
Preferred stock	228,485			132,097
Tangible common equity (Non-GAAP) (2)	$	2,753,467		$	2,504,349
Average shareholders’ equity (GAAP)	$	4,265,571		$	3,935,082
Less: Average preferred equity	228,485			132,097
Average common equity	4,037,086			3,802,985
Less: Average intangible assets, net	1,303,636			1,309,962
Average tangible common shareholders’ equity (Non-GAAP) (2)	$	2,733,450		$	2,493,023
Return on average assets (GAAP)	1.26		%	1.34		%
Effect of non-core revenues and expenses	—			0.01
Core return on average assets (Non-GAAP)	1.26		%	1.35		%
Return on average common equity (GAAP)	9.46		%	10.21		%
Effect of non-core revenues and expenses	—			0.06
Core return on average common equity (Non-GAAP)	9.46		%	10.27		%
Effect of intangibles (2)	5.02			6.07
Core return on average tangible common equity (Non-GAAP) (2)	14.48		%	16.34		%
Efficiency ratio (GAAP)	55.2		%	54.1		%
Effect of tax benefit related to tax-exempt income	(0.3		)	(0.3		)
Efficiency ratio (TE) (Non-GAAP) (1)	54.9		%	53.8		%
Effect of amortization of intangibles	(1.5		)	(1.7		)

80

Effect of non-core items	—			(0.2		)
Core tangible efficiency ratio (TE) (Non-GAAP) (1) (2)	53.4		%	51.9		%
Total assets (GAAP)	$	31,734,598		$	30,118,387
Less: Goodwill and other intangibles	1,301,348			1,305,915
Tangible assets (Non-GAAP) (2)	$	30,433,250		$	28,812,472
Tangible common equity ratio (Non-GAAP) (2)	9.05		%	8.69		%
Cash Yield:
Earning assets average balance (GAAP)	$	28,959,764		$	27,722,479
Add: Adjustments	111,075			143,665
Earning assets average balance, as adjusted (Non-GAAP)	$	29,070,839		$	27,866,144
Net interest income (GAAP)	$	249,333		$	259,225
Add: Adjustments	(13,715		)	(17,566		)
Net interest income, as adjusted (Non-GAAP)	$	235,618		$	241,659
Yield, as reported	3.44		%	3.74		%
Add: Adjustments	(0.20		)	(0.27		)
Yield, as adjusted (Non-GAAP)	3.24		%	3.47		%

⁽¹⁾ Fully taxable-equivalent (TE) calculations include the tax benefit associated with related income sources that are tax-exempt using a rate of 21%.

⁽²⁾ Tangible calculations eliminate the effect of goodwill and acquisition-related intangibles and the corresponding amortization expense on a tax-effected basis where applicable.

81

Glossary of Defined Terms

Term	Definition
2018 10-K	Annual Report on Form 10-K for the year ended December 31, 2018
ACL	Allowance for credit losses
Acquired loans	Loans acquired in a business combination
AFS	Securities available for sale
ALLL	Allowance for loan and lease losses
AOCI	Accumulated other comprehensive income (loss)
ARRC	Alternative Reference Rates Committee
ASC	Accounting Standards Codification
ASU	Accounting Standards Update
C&I	Commercial and Industrial loans
CEO	Chief Executive Officer
CET1	Common Equity Tier 1 Capital defined by Basel III capital rules
CFO	Chief Financial Officer
CRA	Community Reinvestment Act
Company	IBERIABANK Corporation and Subsidiaries
DOJ	Department of Justice
ECL	Expected credit losses
EPS	Earnings per common share
Exchange Act	Securities Exchange Act of 1934
FASB	Financial Accounting Standards Board
FDIC	Federal Deposit Insurance Corporation
FHA	Federal Housing Administration
FHLB	Federal Home Loan Bank
FOMC	Federal Open Market Committee
FRB	Board of Governors of the Federal Reserve System
GAAP	Accounting principles generally accepted in the United States of America
Gibraltar	Gibraltar Private Bank & Trust Co.
HUD	U.S. Department of Housing and Urban Development
IBERIABANK	Banking subsidiary of IBERIABANK Corporation
Legacy loans	Loans that were originated directly or otherwise underwritten by the Company
LIBOR	London Interbank Borrowing Offered Rate
LTC	Lenders Title Company
Non-GAAP	Financial measures determined by methods other than in accordance with GAAP
OCI	Other comprehensive income
OREO	Other real estate owned
OTTI	Other than temporary impairment
Parent	IBERIABANK Corporation
ROU	Right-of-Use
RRP	Recognition and Retention Plan
Sabadell United	Sabadell United Bank, N.A.
SEC	Securities and Exchange Commission
SIFMA	Securities Industry and Financial Markets Association
SOFR	Secured Overnight Financing Rate
SolomonParks	SolomonParks Title & Escrow, LLC
TE	Fully taxable equivalent
TDR	Troubled debt restructuring
U.S.	United States of America
UST	United States Treasury

82

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Quantitative and qualitative disclosures about market risk are presented at December 31, 2018 in Part II, Item 7A of the 2018 10-K, filed with the Securities and Exchange Commission on February 22, 2019. Additional information at September 30, 2019 is included herein under Part I, Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations”.

Item 4. Controls and Procedures

An evaluation of the effectiveness of the Company’s disclosure controls and procedures as of September 30, 2019 was carried out under the supervision, and with the participation of, the Chief Executive Officer (CEO) and Chief Financial Officer (CFO). Based on that evaluation, the CEO and CFO have concluded that the Company’s disclosure controls and procedures are effective in alerting them in a timely manner to material information required to be disclosed by the Company in reports that it files or submits under the Securities Exchange Act of 1934 (the “Exchange Act”).

Disclosure controls and procedures are designed to ensure that information required to be disclosed in reports filed by the Company under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls are also designed with the objective of ensuring that such information is accumulated and communicated to the Company’s management, including the CEO and the CFO, as appropriate, to allow timely decisions regarding required disclosures. Disclosure controls include review of internal controls that are designed to provide reasonable assurance that transactions are properly authorized, assets are safeguarded against unauthorized or improper use and transactions are properly recorded and reported. There was no significant change in the Company’s internal controls over financial reporting during the last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the internal control over financial reporting.

Any control system, no matter how well conceived and operated, can provide only reasonable assurance that its objectives are achieved. The design of a control system inherently has limitations, including the controls’ cost relative to their benefits. Additionally, controls can be circumvented. No cost-effective control system can provide absolute assurance that all control issues and instances of fraud, if any, will be detected.

83

Part II. Other Information

Item 1. Legal Proceedings

See the "Legal Proceedings" section of "Note 15 – Commitments and Contingencies" of the Notes to the Unaudited Consolidated Financial Statements, incorporated herein by reference.

Item 1A. Risk Factors

For information regarding risk factors that could affect the Company's results of operations, financial condition and liquidity, see the risk factors disclosed in the "Risk Factors" section of the Company's 2018 10-K, filed with the Securities and Exchange Commission on February 22, 2019.

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

Information concerning IBERIABANK Corporation's repurchases of its outstanding common stock during the three-month period ended September 30, 2019, is included in the following table:

Issuer Purchases of Equity Securities

Period	Total Number of Shares Purchased		Average Price Paid per Share	Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs
July 1-31, 2019 (1)(2)	177,818		76.57	177,230	1,540,000
August 1-31, 2019	325,784		71.12	310,000	1,230,000
September 1-30, 2019	65,098		68.60	65,000	1,165,000
Total	568,700	(3)	72.53	552,230	1,165,000

⁽¹⁾     On July 12, 2019, the Company completed its then current share repurchase program, which commenced in November 2018, and under which the Company repurchased a total of 2,765,000 shares of its common stock at a weighted average price of $75.52 per share, including 117,230 shares purchased in the third quarter at a weighted average price of $75.75 per share.

⁽²⁾    On July 17, 2019, the Board of Directors authorized a new repurchase plan of up to 1,600,000 shares of the Company's common stock. This repurchase authorization equated to approximately 3% of total common shares outstanding. Stock repurchases under this program will be made from time to time, on the open market or in privately negotiated transactions at the discretion of the management of the Company. The timing of these repurchases will depend on market conditions and other requirements. The Company currently anticipates the share repurchase program will extend over a two-year period, or earlier if the shares have been repurchased. During the third quarter of 2019, the Company repurchased 435,000 common shares under the current Board-approved plan at a weighted average price of $71.58 per common share. At September 30, 2019, the Company had approximately 1,165,000 remaining shares that may be repurchased under the current plan.

⁽³⁾     Includes 16,470 shares of the Company's common stock acquired by the Company during the three-month period in connection with satisfaction of tax withholding obligations on vested restricted stock.

Restrictions on Dividends and Repurchase of Stock

Holders of the Company's common stock are only entitled to receive dividends if, as, and when the Company's Board of Directors may declare out of funds legally available for such payments.

IBERIABANK Corporation understands the importance of returning capital to shareholders. Management will continue to execute the capital planning process, including evaluation of the amount of the common stock dividend, with the Board of Directors and in conjunction with the regulators, subject to the Company's results of operations. Also, IBERIABANK Corporation is a bank holding company, and its ability to declare and pay dividends is dependent on certain federal regulatory considerations, including the guidelines of the Federal Reserve regarding capital adequacy and dividends.

84

On April 4, 2019, the Company issued and sold an aggregate of 4,000,000 depositary shares (the “Series D Depositary Shares”), each representing a 1/400th ownership interest in a share of the Company’s 6.100% Fixed-to-Floating Non-Cumulative Perpetual Preferred Stock, Series D, par value $1.00 per share, (“Series D Preferred Stock”), with a liquidation preference of $10,000 per share of Series D Preferred Stock (equivalent to $25 per depositary share), which represents $100 million in aggregate liquidation preference.

Dividends will accrue and be payable on the Series D Preferred Stock, if declared by the Company's Board of Directors, and will be paid semi-annually on May 1 and November 1, in arrears, at an annual rate equal to (i) 6.100% for each period from the issuance date to May 1, 2024 and (ii) three-month LIBOR plus 3.859% for each period on or after August 1, 2024. The Company may redeem the Series D Preferred Stock at its option, subject to regulatory approval, as described in the Company’s Registration Statement on Form 8-A, filed with the Securities and Exchange Commission on April 4, 2019.

Holders of the common stock are subject to the prior dividend rights of any holders of the Company's preferred stock then outstanding. There were 23,750 shares of preferred stock outstanding at September 30, 2019. In addition, the terms of the Company’s outstanding junior subordinated debt securities prohibit it from declaring or paying any dividends or distributions on outstanding capital stock, or purchasing, acquiring, or making a liquidation payment on such stock, if the Company has elected to defer interest payments on such debt.

For additional information, see Note 9, Shareholders' Equity, Capital Ratios and Other Regulatory Matters.

Item 3. Defaults Upon Senior Securities

Not Applicable.

Item 4. Mine Safety Disclosures

Not Applicable.

Item 5. Other Information

None.

85

Item 6. Exhibits

Exhibit No. 31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 32.2	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit No. 101.INS	XBRL Instance Document.
Exhibit No. 101.SCH	XBRL Taxonomy Extension Schema.
Exhibit No. 101.CAL	XBRL Taxonomy Extension Calculation Linkbase.
Exhibit No. 101.DEF	XBRL Taxonomy Extension Definition Linkbase.
Exhibit No. 101.LAB	XBRL Taxonomy Extension Label Linkbase.
Exhibit No. 101.PRE	XBRL Taxonomy Extension Presentation Linkbase.
Exhibit No. 104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

86

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.

	IBERIABANK Corporation
Date: November 8, 2019	By:	/s/ Daryl G. Byrd
	Daryl G. Byrd
	President and Chief Executive Officer
Date: November 8, 2019	By:	/s/ Anthony J. Restel
	Anthony J. Restel
	Vice Chairman and Chief Financial Officer

87

EX-31.1

EXHIBIT 31.1

CERTIFICATIONS

SECTION 302 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

I, Daryl G. Byrd, President and Chief Executive Officer of IBERIABANK Corporation, certify that:

1. I have reviewed this quarterly report on Form 10-Q of IBERIABANK 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

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

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

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

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

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

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

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

Date:	November 8, 2019	/s/ Daryl G. Byrd
		Daryl G. Byrd
		President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATIONS

SECTION 302 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

I, Anthony J. Restel, Vice Chairman and Chief Financial Officer of IBERIABANK Corporation, certify that:

1. I have reviewed this quarterly report on Form 10-Q of IBERIABANK 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

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

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

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

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

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

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

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

Date:	November 8, 2019	/s/ Anthony J. Restel
		Anthony J. Restel
		Vice Chairman 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

In connection with the Quarterly Report of IBERIABANK Corporation (the “Company”) on Form 10-Q for the period ended September 30, 2019 (the “Report”), I, Daryl G. Byrd, President and Chief Executive Officer of the Company, certify that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of and for the periods covered in the Report.

Date:	November 8, 2019	/s/ Daryl G. Byrd
		Daryl G. Byrd
		President and Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request. The information furnished herein shall not be deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933.

EX-32.2

EXHIBIT 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of IBERIABANK Corporation (the “Company”) on Form 10-Q for the period ended September 30, 2019 (the “Report”), I, Anthony J. Restel, Vice Chairman and Chief Financial Officer of the Company, certify that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of and for the periods covered in the Report.

Date:	November 8, 2019	/s/ Anthony J. Restel
		Anthony J. Restel
		Vice Chairman and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request. The information furnished herein shall not be deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933.

XML

Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Carrying Amount of Goodwill

Changes to the carrying amount of goodwill by reporting unit for the nine months ended September 30, 2019, and the year ended December 31, 2018 are provided in the following table:

(in thousands)	IBERIABANK		Mortgage		LTC		Total
Balance, December 31, 2017	$	1,160,559	$	23,178	$	5,165	$	1,188,902
Goodwill acquired and adjustments during the year	43,251		—		3,380		46,631
Balance, December 31, 2018	$	1,203,810	$	23,178	$	8,545	$	1,235,533
Goodwill acquired and adjustments during the year	—		—		—		—
Balance, September 30, 2019	$	1,203,810	$	23,178	$	8,545	$	1,235,533

Schedule of Mortgage Servicing Rights

Mortgage servicing rights had the following carrying values as of the periods indicated:

	September 30, 2019										December 31, 2018
	Gross Carrying Amount		Valuation Allowance			Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Valuation Allowance		Accumulated Amortization			Net Carrying Amount
(in thousands)
Mortgage servicing rights	$	19,517	$	(195	)	$	(5,994	)	$	13,328	$	13,612	$	—	$	(4,806	)	$	8,806

Schedule of Definite-Lived Intangible Assets

Definite-lived intangible assets had the following carrying values included in other intangible assets on the Company’s consolidated balance sheets as of the periods indicated:

	September 30, 2019							December 31, 2018
(in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core deposit intangible assets	$	136,183	$	(77,256	)	$	58,927	$	136,183	$	(63,213	)	$	72,970
Customer relationship intangible asset	1,385		(1,363		)	22		1,385		(1,323		)	62
Non-compete agreement	206		(102		)	104		206		(72		)	134
Total	$	137,774	$	(78,721	)	$	59,053	$	137,774	$	(64,608	)	$	73,166

XML

Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Schedule of Calculation of Basic and Diluted Earnings Per Share

The computations of basic and diluted earnings per share were as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands, except per share data)	2019			2018			2019			2018
Earnings Per Common Share - Basic:
Net income	$	99,850		$	101,465		$	301,579		$	240,210
Less: Preferred stock dividends	3,599			3,599			8,146			8,146
Less: Dividends and undistributed earnings allocated to unvested restricted shares	874			908			2,806			2,341
Earnings allocated to common shareholders - basic	$	95,377		$	96,958		$	290,627		$	229,723
Weighted average common shares outstanding	51,984			55,571			53,160			55,047
Earnings per common share - basic	$	1.83		$	1.74		$	5.47		$	4.17
Earnings Per Common Share - Diluted:
Earnings allocated to common shareholders - basic	$	95,377		$	96,958		$	290,627		$	229,723
Adjustment for undistributed earnings allocated to unvested restricted shares	(17		)	(25		)	(37		)	(49		)
Earnings allocated to common shareholders - diluted	$	95,360		$	96,933		$	290,590		$	229,674
Weighted average common shares outstanding	51,984			55,571			53,160			55,047
Dilutive potential common shares	308			374			333			360
Weighted average common shares outstanding - diluted	52,292			55,945			53,493			55,407
Earnings per common share - diluted	$	1.82		$	1.73		$	5.43		$	4.14

XML

Business Segments (Tables)

9 Months Ended

Sep. 30, 2019

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

The following tables present certain information regarding operations by reportable segment, including a reconciliation of segment results to reported consolidated results for the periods presented. Reconciling items between segment results and reported results include:

• Elimination of interest income and interest expense representing interest earned by IBERIABANK on interest-bearing checking accounts held by related companies, as well as the elimination of the related deposit balances at the IBERIABANK segment;

• Elimination of investment in subsidiary balances on certain operating segments included in total and average segment assets; and

• Elimination of intercompany due to and due from balances on certain operating segments that are included in total and average segment assets.

	Three Months Ended September 30, 2019
(in thousands)	IBERIABANK			Mortgage		LTC			Consolidated
Interest and dividend income	$	330,896		$	2,282	$	—		$	333,178
Interest expense	83,845			—		—			83,845
Net interest income	247,051			2,282		—			249,333
Provision for (reversal of) credit losses	8,974			12		—			8,986
Mortgage income	—			17,432		—			17,432
Title revenue	—			—		7,170			7,170
Other non-interest income (expense)	35,881			3,194		(3		)	39,072
Allocated expenses (income)	(4,068		)	2,991		1,077			—
Non-interest expense	152,988			14,676		4,998			172,662
Income before income tax expense	125,038			5,229		1,092			131,359
Income tax expense	29,938			1,282		289			31,509
Net income	$	95,100		$	3,947	$	803		$	99,850
Total loans, leases, and loans held for sale, net of unearned income	$	23,650,057		$	281,756	$	—		$	23,931,813
Total assets	31,386,350			320,994		27,254			31,734,598
Total deposits	24,946,708			30,577		—			24,977,285
Average assets	31,256,216			271,817		26,258			31,554,291

	Three Months Ended September 30, 2018
(in thousands)	IBERIABANK			Mortgage			LTC		Consolidated
Interest and dividend income	$	315,467		$	1,599		$	1	$	317,067
Interest expense	57,842			—			—		57,842
Net interest income	257,625			1,599			1		259,225
Provision for (reversal of) credit losses	11,386			(2		)	—		11,384
Mortgage income	—			12,729			—		12,729
Title revenue	—			—			6,280		6,280
Other non-interest income (expense)	33,594			(16		)	500		34,078
Allocated expenses (income)	(3,691		)	2,680			1,011		—
Non-interest expense	154,000			10,223			4,839		169,062
Income before income tax expense	129,524			1,411			931		131,866
Income tax expense	29,765			386			250		30,401
Net income	$	99,759		$	1,025		$	681	$	101,465
Total loans, leases, and loans held for sale, net of unearned income	$	22,302,679		$	84,203		$	—	$	22,386,882
Total assets	29,974,065			119,322			25,000		30,118,387
Total deposits	23,179,549			13,897			—		23,193,446
Average assets	29,863,742			158,464			24,025		30,046,231

	Nine Months Ended September 30, 2019
(in thousands)	IBERIABANK			Mortgage			LTC			Consolidated
Interest and dividend income	$	989,595		$	5,633		$	1		$	995,229
Interest expense	240,073			—			—			240,073
Net interest income	749,522			5,633			1			755,156
Provision for (reversal of) credit losses	33,539			(35		)	—			33,504
Mortgage income	—			47,725			—			47,725
Title revenue	—			—			19,290			19,290
Other non-interest income (expense)	104,840			3,172			(19		)	107,993
Allocated expenses (income)	(10,515		)	7,741			2,774			—
Non-interest expense	447,882			38,807			14,344			501,033
Income before income tax expense	383,456			10,017			2,154			395,627
Income tax expense	91,047			2,425			576			94,048
Net income	$	292,409		$	7,592		$	1,578		$	301,579
Total loans, leases, and loans held for sale, net of unearned income	$	23,650,057		$	281,756		$	—		$	23,931,813
Total assets	31,386,350			320,994			27,254			31,734,598
Total deposits	24,946,708			30,577			—			24,977,285
Average assets	30,981,906			215,306			25,299			31,222,511

	Nine Months Ended September 30, 2018
(in thousands)	IBERIABANK			Mortgage			LTC			Consolidated
Interest and dividend income	$	886,629		$	4,802		$	2		$	891,433
Interest expense	143,206			—			—			143,206
Net interest income	743,423			4,802			2			748,227
Provision for (reversal of) credit losses	27,316			(26		)	—			27,290
Mortgage income	—			36,045			—			36,045
Title revenue	—			—			18,153			18,153
Other non-interest income (expense)	96,981			(83		)	497			97,395
Allocated expenses (income)	(9,043		)	6,714			2,329			—
Non-interest expense	505,423			34,105			14,382			553,910
Income (loss) before income tax expense	316,708			(29		)	1,941			318,620
Income tax expense (benefit)	78,516			(7		)	(99		)	78,410
Net income (loss)	$	238,192		$	(22	)	$	2,040		$	240,210
Total loans, leases, and loans held for sale, net of unearned income	$	22,302,679		$	84,203		$	—		$	22,386,882
Total assets	29,974,065			119,322			25,000			30,118,387
Total deposits	23,179,549			13,897			—			23,193,446
Average assets	29,136,369			164,039			23,037			29,323,445

XML

Shareholders' Equity, Capital Ratios and Other Regulatory Matters

9 Months Ended

Sep. 30, 2019

Banking and Thrift [Abstract]

Shareholders' Equity, Capital Ratios and Other Regulatory Matters

SHAREHOLDERS' EQUITY, CAPITAL RATIOS AND OTHER REGULATORY MATTERS

Preferred Stock

On April 4, 2019, the Company issued and sold an aggregate of 4,000,000 depositary shares (the “Series D Depositary Shares”), each representing a 1/400th ownership interest in a share of the Company’s 6.100% Fixed-to-Floating Non-Cumulative Perpetual Preferred Stock, Series D, par value $1.00 per share, (“Series D Preferred Stock”), with a liquidation preference of $10,000 per share of Series D Preferred Stock (equivalent to $25 per depositary share), which represents $100 million in aggregate liquidation preference.

Dividends will accrue and be payable on the Series D Preferred Stock, if declared by the Company's Board of Directors, and (i) will be paid semi-annually on May 1 and November 1, in arrears, at an annual rate equal to 6.100% for each period from the issuance date to May 1, 2024 and (ii) will be paid quarterly on February 1, May 1, August 1, and November 1 at an annual rate equal to three-month LIBOR plus 3.859% for each period on or after August 1, 2024. The Company may redeem the Series D Preferred Stock at its option, subject to regulatory approval, as described in the Company’s Registration Statement on Form 8-A, filed with the Securities and Exchange Commission on April 4, 2019.

The following table presents a summary of the Company's non-cumulative perpetual preferred stock:

							September 30, 2019		December 31, 2018
	Issuance Date	Earliest Redemption Date	Annual Dividend Rate		Liquidation Amount		Carrying Amount		Carrying Amount
(in thousands)
Series B Preferred Stock	8/5/2015	8/1/2025	6.625	%	$	80,000	$	76,812	$	76,812
Series C Preferred Stock	5/9/2016	5/1/2026	6.600	%	57,500		55,285		55,285
Series D Preferred Stock	4/4/2019	5/1/2024	6.100	%	100,000		96,388		—
					$	237,500	$	228,485	$	132,097

Common Stock

In 2018, the Company's Board of Directors authorized the repurchase of up to 2,765,000 shares of IBERIABANK Corporation's outstanding common stock. The remaining 117,230 shares available under this plan were repurchased during the third quarter of 2019. Also during the third quarter of 2019, the Company announced a new Board-approved share repurchase program for up to 1,600,000 shares, or approximately 3% of total common shares outstanding at the time of the announcement. Stock repurchases under this program will be made from time to time, on the open market or in privately negotiated transactions. The timing of these repurchases will depend on market conditions and other requirements. The share repurchase program does not obligate the Company to repurchase any dollar amount or number of shares, and expires during the third quarter of 2021. The program may be extended, modified, suspended, or discontinued at any time.

During the third quarter of 2019, the Company repurchased 552,230 common shares for approximately $40.0 million at a weighted average cost of $72.46 per share. During the third quarter of 2018, the Company repurchased 363,210 common shares for approximately $30.4 million at a weighted average cost of $83.63. During the nine months ended September 30, 2019, the Company repurchased 2,700,000 common shares for approximately $204.7 million at a weighted average cost of $75.83 per share. During the nine months ended September 30, 2018, the Company repurchased 763,210 common shares for approximately $61.0 million at a weighted average cost of $79.99 per share.

At September 30, 2019, the remaining number of common shares that could be repurchased under the new plan was 1,165,000 shares.

Regulatory Capital

The Company and IBERIABANK are subject to various regulatory capital requirements administered by federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy regulations and the regulatory framework for prompt corrective action, the Company and IBERIABANK, as applicable, must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

As of September 30, 2019, the Company and IBERIABANK met all capital adequacy requirements to which they are subject.

As of September 30, 2019, the most recent notification from the FRB categorized IBERIABANK as well-capitalized under the regulatory framework for prompt corrective action (the prompt corrective action requirements are not applicable to the Company). To be categorized as well-capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, Common Equity Tier 1, and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since the notification that management believes have changed that categorization.

The Company’s and IBERIABANK’s actual capital amounts and ratios as of September 30, 2019 and December 31, 2018 are presented in the following tables:

(in thousands)	September 30, 2019
	Minimum				Well-Capitalized		Actual
	Amount		Ratio		Amount	Ratio	Amount		Ratio
Tier 1 Leverage
Consolidated	$	1,208,894	4.00	%	N/A	N/A	$	2,955,775	9.78	%
IBERIABANK	1,206,257		4.00		1,507,821	5.00	2,861,883		9.49
Common Equity Tier 1 (CET1)
Consolidated	$	1,179,356	4.50	%	N/A	N/A	$	2,727,290	10.41	%
IBERIABANK	1,175,984		4.50		1,698,643	6.50	2,861,883		10.95
Tier 1 Risk-Based Capital
Consolidated	$	1,572,475	6.00	%	N/A	N/A	$	2,955,775	11.28	%
IBERIABANK	1,567,978		6.00		2,090,638	8.00	2,861,883		10.95
Total Risk-Based Capital
Consolidated	$	2,096,633	8.00	%	N/A	N/A	$	3,234,654	12.34	%
IBERIABANK	2,090,638		8.00		2,613,297	10.00	3,024,262		11.57

(in thousands)	December 31, 2018
	Minimum				Well-Capitalized		Actual
	Amount		Ratio		Amount	Ratio	Amount		Ratio
Tier 1 Leverage
Consolidated	$	1,168,343	4.00	%	N/A	N/A	$	2,812,863	9.63	%
IBERIABANK	1,165,537		4.00		1,456,921	5.00	2,733,099		9.38
Common Equity Tier 1 (CET1)
Consolidated	$	1,125,405	4.50	%	N/A	N/A	$	2,680,766	10.72	%
IBERIABANK	1,122,712		4.50		1,621,695	6.50	2,733,099		10.95
Tier 1 Risk-Based Capital
Consolidated	$	1,500,540	6.00	%	N/A	N/A	$	2,812,863	11.25	%
IBERIABANK	1,496,949		6.00		1,995,932	8.00	2,733,099		10.95
Total Risk-Based Capital
Consolidated	$	2,000,720	8.00	%	N/A	N/A	$	3,084,764	12.33	%
IBERIABANK	1,995,932		8.00		2,494,915	10.00	2,888,500		11.58

Minimum capital ratios are subject to a capital conservation buffer. In order to avoid limitations on distributions, including dividend payments, and certain discretionary bonus payments to executive officers, an institution must hold a capital conservation buffer above its minimum risk-based capital requirements. This capital conservation buffer is calculated as the lowest of the differences between the actual CET1 ratio, Tier 1 Risk-Based Capital Ratio, and Total Risk-Based Capital ratio and the corresponding minimum ratios. At September 30, 2019, the required minimum capital conservation buffer was 2.50%. At September 30, 2019, the capital conservation buffers of the Company and IBERIABANK were 4.34% and 3.57%, respectively.

XML

Allowance for Credit Losses and Credit Quality

9 Months Ended

Sep. 30, 2019

Receivables [Abstract]

Allowance for Credit Losses and Credit Quality

ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY

Allowance for Credit Losses Activity

A summary of changes in the allowance for credit losses for the nine months ended September 30 was as follows:

(in thousands)	2019			2018
Allowance for loan and lease losses at beginning of period	$	140,571		$	140,891
Provision for loan and lease losses	32,190			26,678
Transfer of balance to OREO and other	(2,696		)	(5,709		)
Charge-offs	(29,971		)	(34,740		)
Recoveries	6,141			9,830
Allowance for loan and lease losses at end of period	$	146,235		$	136,950
Reserve for unfunded commitments at beginning of period	$	14,830		$	13,208
Balance created in acquisition accounting	—			900
Provision for unfunded lending commitments	1,314			613
Reserve for unfunded commitments at end of period	$	16,144		$	14,721
Allowance for credit losses at end of period	$	162,379		$	151,671

A summary of changes in the allowance for credit losses, by loan portfolio type, for the nine months ended September 30 was as follows:

	2019
(in thousands)	Commercial Real Estate			Commercial and Industrial			Residential Mortgage			Consumer and Other			Total
Allowance for loan and lease losses at beginning of period	$	51,806		$	54,096		$	12,998		$	21,671		$	140,571
Provision for (Reversal of) loan and lease losses	9,205			15,819			(152		)	7,318			32,190
Transfer of balance to OREO and other	(309		)	236			(2,879		)	256			(2,696		)
Charge-offs	(2,179		)	(17,799		)	(219		)	(9,774		)	(29,971		)
Recoveries	474			3,163			169			2,335			6,141
Allowance for loan and lease losses at end of period	$	58,997		$	55,515		$	9,917		$	21,806		$	146,235
Reserve for unfunded commitments at beginning of period	$	4,869		$	6,198		$	866		$	2,897		$	14,830
Provision for (Reversal of) unfunded commitments	357			493			(216		)	680			1,314
Reserve for unfunded commitments at end of period	$	5,226		$	6,691		$	650		$	3,577		$	16,144
Allowance on loans individually evaluated for impairment	$	2,721		$	7,974		$	281		$	3,039		$	14,015
Allowance on loans collectively evaluated for impairment	50,809			45,990			5,393			18,630			120,822
Allowance on loans acquired with deteriorated credit quality	5,467			1,551			4,243			137			11,398
Loans and leases, net of unearned income:
Balance at end of period	$	9,809,756		$	6,490,125		$	4,649,745		$	2,726,911		$	23,676,537
Balance at end of period individually evaluated for impairment	73,715			51,350			42,423			37,907			205,395
Balance at end of period collectively evaluated for impairment	9,605,296			6,417,426			4,526,508			2,636,015			23,185,245
Balance at end of period acquired with deteriorated credit quality	130,745			21,349			80,814			52,989			285,897

	2018
(in thousands)	Commercial Real Estate			Commercial and Industrial			Residential Mortgage			Consumer and Other			Total
Allowance for loan and lease losses at beginning of period	$	54,201		$	53,916		$	9,117		$	23,657		$	140,891
Provision for (Reversal of) loan and lease losses	(4,020		)	20,372			2,318			8,008			26,678
Transfer of balance to OREO and other	(1,556		)	(814		)	(45		)	(3,294		)	(5,709		)
Charge-offs	(1,281		)	(22,447		)	(365		)	(10,647		)	(34,740		)
Recoveries	1,019			5,665			53			3,093			9,830
Allowance for loan and lease losses at end of period	$	48,363		$	56,692		$	11,078		$	20,817		$	136,950
Reserve for unfunded commitments at beginning of period	$	4,531		$	5,309		$	555		$	2,813		$	13,208
Balance created in acquisition accounting	129			81			—			690			900
Provision for (Reversal of) unfunded commitments	(134		)	169			246			332			613
Reserve for unfunded commitments at end of period	$	4,526		$	5,559		$	801		$	3,835		$	14,721
Allowance on loans individually evaluated for impairment	$	2,650		$	10,471		$	154		$	2,973		$	16,248
Allowance on loans collectively evaluated for impairment	40,519			44,727			5,063			17,661			107,970
Allowance on loans acquired with deteriorated credit quality	5,194			1,494			5,861			183			12,732
Loans and leases, net of unearned income:
Balance at end of period	$	9,381,883		$	5,581,040		$	4,300,163		$	3,080,820		$	22,343,906
Balance at end of period individually evaluated for impairment	73,469			75,625			6,230			33,863			189,187
Balance at end of period collectively evaluated for impairment	9,126,653			5,478,377			4,174,524			2,970,301			21,749,855
Balance at end of period acquired with deteriorated credit quality	181,761			27,038			119,409			76,656			404,864

Portfolio Segment Risk Factors

Commercial real estate loans include loans to commercial customers for medium-term financing of land and buildings or for land development or construction of a building. These loans are repaid from revenues through operations of the businesses, rents of properties, sales of properties and refinances. Commercial and industrial loans and leases represent loans to commercial customers to finance general working capital needs, equipment purchases and leases and other projects where repayment is derived from cash flows resulting from business operations. The Company originates commercial and industrial loans on a secured and, to a lesser extent, unsecured basis.

Residential mortgage loans consist of loans to consumers to finance a primary residence. The vast majority of the residential mortgage loan portfolio is comprised of non-conforming 1-4 family mortgage loans secured by properties located in the Company's market areas and originated under terms and documentation that permit their sale in a secondary market.

Consumer loans are offered by the Company in order to provide a full range of retail financial services to its customers and include home equity, credit card and other direct consumer installment loans. The Company originates substantially all of its consumer loans in its primary market areas. Loans in the consumer segment are sensitive to unemployment and other key consumer economic measures.

Credit Quality Indicators

For commercial loans and leases, the Company utilizes regulatory classification ratings to monitor credit quality. Loans with a "pass" rating are those that the Company believes will be fully repaid in accordance with the contractual loan terms. Commercial loans and leases that are "criticized" are those that have some weakness or potential weakness that indicate an increased probability of future loss. "Criticized" loans are grouped into three categories: "special mention", "substandard", and "doubtful". Special mention loans have potential weaknesses that, if left uncorrected, may result in deterioration of the Company's credit position at some future date.

Substandard commercial loans have well-defined weaknesses and are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Doubtful commercial loans have the same weaknesses as substandard loans with the added characteristics that the probability of loss is high and collection of the full amount is improbable. Substandard and doubtful loans are collectively referred to as "classified" loans. For residential mortgage loans and consumer loans, the Company primarily uses the loan's payment and delinquency status to monitor credit quality. These credit quality indicators are continually updated and monitored.

The recorded investment in loans and leases by credit quality indicator is presented in the following tables. Asset risk classifications for commercial loans and leases reflect the classification as of September 30, 2019 and December 31, 2018. Credit quality information in the tables below includes total loans acquired (including acquired impaired loans) at the net loan balance, after the application of premiums and discounts. Loan premiums and discounts represent the adjustment of acquired loans to fair value at the acquisition date, as adjusted for income accretion and changes in cash flow estimates in subsequent periods.

	September 30, 2019												December 31, 2018
(in thousands)	Pass		Special Mention		Sub- standard		Doubtful		Loss		Total		Pass		Special Mention		Sub- standard		Doubtful		Total
Real estate - construction	$	1,300,847	$	19,631	$	9,536	$	—	$	—	$	1,330,014	$	1,182,554	$	1,062	$	12,740	$	10	$	1,196,366
Real estate - owner-occupied	2,409,221		19,786		38,214		840		—		2,468,061		2,328,999		25,526		41,297		—		2,395,822
Real estate - non-owner-occupied	5,926,537		47,494		37,193		447		10		6,011,681		5,687,963		78,009		26,512		3,633		5,796,117
Commercial and industrial	6,340,738		71,431		63,303		14,653		—		6,490,125		5,586,482		52,632		73,853		24,050		5,737,017
Total	$	15,977,343	$	158,342	$	148,246	$	15,940	$	10	$	16,299,881	$	14,785,998	$	157,229	$	154,402	$	27,693	$	15,125,322

	September 30, 2019						December 31, 2018
(in thousands)	Current		30+ Days Past Due		Total		Current		30+ Days Past Due		Total
Residential mortgage	$	4,567,633	$	82,112	$	4,649,745	$	4,290,152	$	69,004	$	4,359,156
Consumer - home equity	2,011,913		41,675		2,053,588		2,258,659		46,035		2,304,694
Consumer - other	665,702		7,621		673,323		721,231		9,412		730,643
Total	$	7,245,248	$	131,408	$	7,376,656	$	7,270,042	$	124,451	$	7,394,493

Impaired Loans

Information on the Company’s investment in impaired loans, which include all TDRs and all other non-accrual loans evaluated or measured individually for impairment for purposes of determining the ALLL, is presented in the following tables as of and for the periods indicated.

	September 30, 2019							December 31, 2018
	Unpaid Principal Balance		Recorded Investment		Related Allowance			Unpaid Principal Balance		Recorded Investment		Related Allowance
(in thousands)
With no related allowance recorded:
Real estate - construction	$	9,540	$	8,531	$	—		$	10,261	$	9,262	$	—
Real estate - owner-occupied	33,985		33,590		—			25,037		19,044		—
Real estate - non-owner-occupied	23,964		22,652		—			15,265		14,288		—
Commercial and industrial	21,813		17,771		—			55,554		43,886		—
Residential mortgage	36,182		35,089		—			1,244		1,221		—
Consumer - home equity	4,736		4,734		—			4,183		4,176		—
With an allowance recorded:
Real estate - construction	98		85		(1		)	228		140		(11		)
Real estate - owner-occupied	5,135		4,921		(2,529		)	5,032		4,773		(520		)
Real estate - non-owner-occupied	4,149		3,936		(191		)	6,445		6,398		(105		)
Commercial and industrial	45,409		33,579		(7,974		)	46,387		27,915		(12,646		)
Residential mortgage	8,010		7,334		(281		)	5,870		5,358		(145		)
Consumer - home equity	29,773		29,124		(2,577		)	29,284		28,818		(2,427		)
Consumer - other	4,308		4,049		(462		)	4,956		4,446		(488		)
Total	$	227,102	$	205,395	$	(14,015	)	$	209,746	$	169,725	$	(16,342	)
Total commercial loans and leases	$	144,093	$	125,065	$	(10,695	)	$	164,209	$	125,706	$	(13,282	)
Total residential mortgage loans	44,192		42,423		(281		)	7,114		6,579		(145		)
Total consumer and other loans	38,817		37,907		(3,039		)	38,423		37,440		(2,915		)

	Three Months Ended September 30, 2019				Three Months Ended September 30, 2018				Nine Months Ended September 30, 2019				Nine Months Ended September 30, 2018
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
(in thousands)
With no related allowance recorded:
Real estate - construction	$	7,333	$	82	$	10,806	$	164	$	7,145	$	242	$	10,371	$	460
Real estate - owner-occupied	33,895		355		34,118		209		34,437		1,235		34,505		903
Real estate - non-owner-occupied	22,794		72		22,091		249		22,910		301		22,988		746
Commercial and industrial	20,594		108		43,409		523		20,727		401		40,564		1,543
Residential mortgage	35,896		136		1,254		9		31,315		391		1,271		36
Consumer - home equity	4,736		47		705		2		4,613		137		708		16
With an allowance recorded:
Real estate - construction	87		—		148		—		93		—		151		1
Real estate - owner-occupied	4,952		10		4,006		83		5,050		113		4,044		102
Real estate - non-owner-occupied	4,155		46		2,398		20		4,090		137		2,442		76
Commercial and industrial	36,824		173		40,357		150		36,765		582		47,098		720
Residential mortgage	7,414		74		5,014		50		7,502		232		5,066		149
Consumer - home equity	29,200		298		28,577		305		28,982		890		27,905		892
Consumer - other	4,175		59		4,710		65		4,326		184		4,884		208
Total	$	212,055	$	1,460	$	197,593	$	1,829	$	207,955	$	4,845	$	201,997	$	5,852
Total commercial loans and leases	$	130,634	$	846	$	157,333	$	1,398	$	131,217	$	3,011	$	162,163	$	4,551
Total residential mortgage loans	43,310		210		6,268		59		38,817		623		6,337		185
Total consumer and other loans	38,111		404		33,992		372		37,921		1,211		33,497		1,116

As of September 30, 2019 and December 31, 2018, the Company was not committed to lend a material amount of additional funds to any customer whose loan was classified as impaired or as a TDR.

XML

Shareholders' Equity, Capital Ratios and Other Regulatory Matters - Actual Capital Amounts and Ratios (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Total Risk-Based Capital
Capital Conversion Buffer	4.34%
Consolidated
Tier 1 Leverage
Minimum amount	$ 1,208,894	$ 1,168,343
Minimum ratio	4.00%	4.00%
Actual amount	$ 2,955,775	$ 2,812,863
Actual ratio	9.78%	9.63%
Common Equity Tier 1 (CET1)
Minimum amount	$ 1,179,356	$ 1,125,405
Minimum ratio	4.50%	4.50%
Actual amount	$ 2,727,290	$ 2,680,766
Actual Ratio	10.41%	10.72%
Tier 1 Risk-Based Capital
Minimum amount	$ 1,572,475	$ 1,500,540
Minimum ratio	6.00%	6.00%
Actual amount	$ 2,955,775	$ 2,812,863
Actual ratio	11.28%	11.25%
Total Risk-Based Capital
Minimum amount	$ 2,096,633	$ 2,000,720
Minimum ratio	8.00%	8.00%
Actual amount	$ 3,234,654	$ 3,084,764
Actual ratio	12.34%	12.33%
IBERIABANK
Tier 1 Leverage
Minimum amount	$ 1,206,257	$ 1,165,537
Minimum ratio	4.00%	4.00%
Well capitalized amount	$ 1,507,821	$ 1,456,921
Well capitalized ratio	5.00%	5.00%
Actual amount	$ 2,861,883	$ 2,733,099
Actual ratio	9.49%	9.38%
Common Equity Tier 1 (CET1)
Minimum amount	$ 1,175,984	$ 1,122,712
Minimum ratio	4.50%	4.50%
Well capitalized amount	$ 1,698,643	$ 1,621,695
Well capitalized ratio	6.50%	6.50%
Actual amount	$ 2,861,883	$ 2,733,099
Actual Ratio	10.95%	10.95%
Tier 1 Risk-Based Capital
Minimum amount	$ 1,567,978	$ 1,496,949
Minimum ratio	6.00%	6.00%
Well capitalized amount	$ 2,090,638	$ 1,995,932
Well capitalized ratio	8.00%	8.00%
Actual amount	$ 2,861,883	$ 2,733,099
Actual ratio	10.95%	10.95%
Total Risk-Based Capital
Minimum amount	$ 2,090,638	$ 1,995,932
Minimum ratio	8.00%	8.00%
Well capitalized amount	$ 2,613,297	$ 2,494,915
Well capitalized ratio	10.00%	10.00%
Actual amount	$ 3,024,262	$ 2,888,500
Actual ratio	11.57%	11.58%
Capital Conversion Buffer	3.57%

XML

Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) - Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Impaired loans	$ 79,442	$ 65,914
OREO, net	4,008	6,433
Total	83,450	72,347
Level 1
Assets
Impaired loans	0	0
OREO, net	0	0
Total	0	0
Level 2
Assets
Impaired loans	0	0
OREO, net	0	0
Total	0	0
Level 3
Assets
Impaired loans	79,442	65,914
OREO, net	4,008	6,433
Total	$ 83,450	$ 72,347

XML

Business Segments (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Segment	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information
Number of business segments | Segment			3
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Interest and dividend income	$ 333,178	$ 317,067	$ 995,229	$ 891,433
Interest expense	83,845	57,842	240,073	143,206
Net interest income	249,333	259,225	755,156	748,227
Other Income and Expenses [Abstract]
Provision for/(reversal of) loan losses	8,986	11,384	33,504	27,290
Other non-interest income (expense)	39,072	34,078	107,993	97,395
Allocated expenses (income)	0	0	0	0
Non-interest expense	172,662	169,062	501,033	553,910
Income before income tax expense	131,359	131,866	395,627	318,620
Income tax expense	31,509	30,401	94,048	78,410
Net income	99,850	101,465	301,579	240,210
Total loans, leases, and loans held for sale, net of unearned income	23,931,813	22,386,882	23,931,813	22,386,882
Total assets	31,734,598	30,118,387	31,734,598	30,118,387	$ 30,833,015
Deposits	24,977,285	23,193,446	24,977,285	23,193,446	$ 23,763,431
Average assets	31,554,291	30,046,231	31,222,511	29,323,445
Title revenue
Other Income and Expenses [Abstract]
Non-interest income	7,170	6,280	19,290	18,153
Mortgage income
Other Income and Expenses [Abstract]
Non-interest income	17,432	12,729	47,725	36,045
Operating Segments | IBERIABANK
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Interest and dividend income	330,896	315,467	989,595	886,629
Interest expense	83,845	57,842	240,073	143,206
Net interest income	247,051	257,625	749,522	743,423
Other Income and Expenses [Abstract]
Provision for/(reversal of) loan losses	8,974	11,386	33,539	27,316
Other non-interest income (expense)	35,881	33,594	104,840	96,981
Allocated expenses (income)	(4,068)	(3,691)	(10,515)	(9,043)
Non-interest expense	152,988	154,000	447,882	505,423
Income before income tax expense	125,038	129,524	383,456	316,708
Income tax expense	29,938	29,765	91,047	78,516
Net income	95,100	99,759	292,409	238,192
Total loans, leases, and loans held for sale, net of unearned income	23,650,057	22,302,679	23,650,057	22,302,679
Total assets	31,386,350	29,974,065	31,386,350	29,974,065
Deposits	24,946,708	23,179,549	24,946,708	23,179,549
Average assets	31,256,216	29,863,742	30,981,906	29,136,369
Operating Segments | IMC
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Interest and dividend income	2,282	1,599	5,633	4,802
Interest expense	0	0	0	0
Net interest income	2,282	1,599	5,633	4,802
Other Income and Expenses [Abstract]
Provision for/(reversal of) loan losses	12	(2)	(35)	(26)
Other non-interest income (expense)	3,194	(16)	3,172	(83)
Allocated expenses (income)	2,991	2,680	7,741	6,714
Non-interest expense	14,676	10,223	38,807	34,105
Income before income tax expense	5,229	1,411	10,017	(29)
Income tax expense	1,282	386	2,425	(7)
Net income	3,947	1,025	7,592	(22)
Total loans, leases, and loans held for sale, net of unearned income	281,756	84,203	281,756	84,203
Total assets	320,994	119,322	320,994	119,322
Deposits	30,577	13,897	30,577	13,897
Average assets	271,817	158,464	215,306	164,039
Operating Segments | LTC
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Interest and dividend income	0	1	1	2
Interest expense	0	0	0	0
Net interest income	0	1	1	2
Other Income and Expenses [Abstract]
Provision for/(reversal of) loan losses	0	0	0	0
Other non-interest income (expense)	(3)	500	(19)	497
Allocated expenses (income)	1,077	1,011	2,774	2,329
Non-interest expense	4,998	4,839	14,344	14,382
Income before income tax expense	1,092	931	2,154	1,941
Income tax expense	289	250	576	(99)
Net income	803	681	1,578	2,040
Total loans, leases, and loans held for sale, net of unearned income	0	0	0	0
Total assets	27,254	25,000	27,254	25,000
Deposits	0	0	0	0
Average assets	26,258	24,025	25,299	23,037
Operating Segments | Title revenue | IBERIABANK
Other Income and Expenses [Abstract]
Non-interest income	0	0	0	0
Operating Segments | Title revenue | IMC
Other Income and Expenses [Abstract]
Non-interest income	0	0	0	0
Operating Segments | Title revenue | LTC
Other Income and Expenses [Abstract]
Non-interest income	7,170	6,280	19,290	18,153
Operating Segments | Mortgage income | IBERIABANK
Other Income and Expenses [Abstract]
Non-interest income	0	0	0	0
Operating Segments | Mortgage income | IMC
Other Income and Expenses [Abstract]
Non-interest income	17,432	12,729	47,725	36,045
Operating Segments | Mortgage income | LTC
Other Income and Expenses [Abstract]
Non-interest income	$ 0	$ 0	$ 0	$ 0

XML

Share-Based Compensation - Activity Related to Stock Options (Detail) - Stock Option Awards - $ / shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Number of shares
Balance at beginning of the period (in shares)	714,420,000	686,366,000
Granted (in shares)	127,090,000	97,620,000
Exercised (in shares)	(50,375,000)	(41,697,000)
Forfeited or expired (in shares)	(12,227,000)	(27,328,000)
Balance at end of the period (in shares)	778,908,000	714,961,000
Exercisable at period end (in shares)	533,784,000	500,349,000
Weighted Average Exercise Price
Balance at beginning of the period (in usd per share)	$ 61.41	$ 58.24
Granted (in usd per share)	70.34	82.02
Exercised (in usd per share)	52.99	53.12
Forfeited or expired (in usd per share)	72.79	68.19
Balance at end of the period (in usd per share)	63.23	61.41
Exercisable at period end (in usd per share)	$ 58.60	$ 56.70

XML

Goodwill and Other Intangible Assets - Schedule of Mortgage Servicing Rights at Carrying Value (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 137,774	$ 137,774
Accumulated Amortization	(78,721)	(64,608)
Net Carrying Amount	59,053	73,166
Mortgage servicing rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19,517	13,612
Valuation Allowance	(195)		$ 0
Accumulated Amortization	(5,994)	(4,806)
Net Carrying Amount	$ 13,328	$ 8,806

XML

Allowance for Credit Losses and Credit Quality - Schedule of Allowance for Loan Losses for Legacy and Acquired Loans, by Loan Portfolio (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Losses
Allowance for loan and lease losses at beginning of period	$ 140,571	$ 140,891
Provision for (Reversal of) loan and lease losses	32,190	26,678
Transfer of balance to OREO and other	(2,696)	(5,709)
Charge-offs	(29,971)	(34,740)
Recoveries	6,141	9,830
Allowance for loan and lease losses at end of period	146,235	136,950
Financing Receivable, Reserve For Unfunded Commitments
Reserve for unfunded commitments at beginning of period	14,830	13,208
Balance created in acquisition accounting		900
Provision for (Reversal of) unfunded commitments	1,314	613
Reserve for unfunded commitments at end of period	16,144	14,721
Allowance on loans individually evaluated for impairment	14,015	16,248
Allowance on loans collectively evaluated for impairment	120,822	107,970
Allowance on loans acquired with deteriorated credit quality	162,379	151,671
Loans and leases, net of unearned income:
Balance at end of period	23,676,537	22,343,906
Balance at end of period individually evaluated for impairment	205,395	189,187
Balance at end of period collectively evaluated for impairment	23,185,245	21,749,855
Commercial Loans | Real Estate
Financing Receivable, Allowance for Credit Losses
Allowance for loan and lease losses at beginning of period	51,806	54,201
Provision for (Reversal of) loan and lease losses	9,205	(4,020)
Transfer of balance to OREO and other	(309)	(1,556)
Charge-offs	(2,179)	(1,281)
Recoveries	474	1,019
Allowance for loan and lease losses at end of period	58,997	48,363
Financing Receivable, Reserve For Unfunded Commitments
Reserve for unfunded commitments at beginning of period	4,869	4,531
Balance created in acquisition accounting		129
Provision for (Reversal of) unfunded commitments	357	(134)
Reserve for unfunded commitments at end of period	5,226	4,526
Allowance on loans individually evaluated for impairment	2,721	2,650
Allowance on loans collectively evaluated for impairment	50,809	40,519
Loans and leases, net of unearned income:
Balance at end of period	9,809,756	9,381,883
Balance at end of period individually evaluated for impairment	73,715	73,469
Balance at end of period collectively evaluated for impairment	9,605,296	9,126,653
Commercial Loans | Commercial and industrial
Financing Receivable, Allowance for Credit Losses
Allowance for loan and lease losses at beginning of period	54,096	53,916
Provision for (Reversal of) loan and lease losses	15,819	20,372
Transfer of balance to OREO and other	236	(814)
Charge-offs	(17,799)	(22,447)
Recoveries	3,163	5,665
Allowance for loan and lease losses at end of period	55,515	56,692
Financing Receivable, Reserve For Unfunded Commitments
Reserve for unfunded commitments at beginning of period	6,198	5,309
Balance created in acquisition accounting		81
Provision for (Reversal of) unfunded commitments	493	169
Reserve for unfunded commitments at end of period	6,691	5,559
Allowance on loans individually evaluated for impairment	7,974	10,471
Allowance on loans collectively evaluated for impairment	45,990	44,727
Loans and leases, net of unearned income:
Balance at end of period	6,490,125	5,581,040
Balance at end of period individually evaluated for impairment	51,350	75,625
Balance at end of period collectively evaluated for impairment	6,417,426	5,478,377
Residential mortgage loans
Financing Receivable, Allowance for Credit Losses
Allowance for loan and lease losses at beginning of period	12,998	9,117
Provision for (Reversal of) loan and lease losses	(152)	2,318
Transfer of balance to OREO and other	(2,879)	(45)
Charge-offs	(219)	(365)
Recoveries	169	53
Allowance for loan and lease losses at end of period	9,917	11,078
Financing Receivable, Reserve For Unfunded Commitments
Reserve for unfunded commitments at beginning of period	866	555
Balance created in acquisition accounting		0
Provision for (Reversal of) unfunded commitments	(216)	246
Reserve for unfunded commitments at end of period	650	801
Allowance on loans individually evaluated for impairment	281	154
Allowance on loans collectively evaluated for impairment	5,393	5,063
Loans and leases, net of unearned income:
Balance at end of period	4,649,745	4,300,163
Balance at end of period individually evaluated for impairment	42,423	6,230
Balance at end of period collectively evaluated for impairment	4,526,508	4,174,524
Consumer and Other Loans
Financing Receivable, Allowance for Credit Losses
Allowance for loan and lease losses at beginning of period	21,671	23,657
Provision for (Reversal of) loan and lease losses	7,318	8,008
Transfer of balance to OREO and other	256	(3,294)
Charge-offs	(9,774)	(10,647)
Recoveries	2,335	3,093
Allowance for loan and lease losses at end of period	21,806	20,817
Financing Receivable, Reserve For Unfunded Commitments
Reserve for unfunded commitments at beginning of period	2,897	2,813
Balance created in acquisition accounting		690
Provision for (Reversal of) unfunded commitments	680	332
Reserve for unfunded commitments at end of period	3,577	3,835
Allowance on loans individually evaluated for impairment	3,039	2,973
Allowance on loans collectively evaluated for impairment	18,630	17,661
Loans and leases, net of unearned income:
Balance at end of period	2,726,911	3,080,820
Balance at end of period individually evaluated for impairment	37,907	33,863
Balance at end of period collectively evaluated for impairment	2,636,015	2,970,301
Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Reserve For Unfunded Commitments
Allowance on loans acquired with deteriorated credit quality	11,398	12,732
Loans and leases, net of unearned income:
Balance at end of period acquired with deteriorated credit quality	285,897	404,864
Receivables Acquired with Deteriorated Credit Quality | Commercial Loans | Real Estate
Financing Receivable, Reserve For Unfunded Commitments
Allowance on loans acquired with deteriorated credit quality	5,467	5,194
Loans and leases, net of unearned income:
Balance at end of period acquired with deteriorated credit quality	130,745	181,761
Receivables Acquired with Deteriorated Credit Quality | Commercial Loans | Commercial and industrial
Financing Receivable, Reserve For Unfunded Commitments
Allowance on loans acquired with deteriorated credit quality	1,551	1,494
Loans and leases, net of unearned income:
Balance at end of period acquired with deteriorated credit quality	21,349	27,038
Receivables Acquired with Deteriorated Credit Quality | Residential mortgage loans
Financing Receivable, Reserve For Unfunded Commitments
Allowance on loans acquired with deteriorated credit quality	4,243	5,861
Loans and leases, net of unearned income:
Balance at end of period acquired with deteriorated credit quality	80,814	119,409
Receivables Acquired with Deteriorated Credit Quality | Consumer and Other Loans
Financing Receivable, Reserve For Unfunded Commitments
Allowance on loans acquired with deteriorated credit quality	137	183
Loans and leases, net of unearned income:
Balance at end of period acquired with deteriorated credit quality	$ 52,989	$ 76,656

XML

Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (345,000)	[1]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1	1,847,000	[2]
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(345,000)	[1]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1	$ 1,847,000	[2]

[1] Cumulative-effect adjustment to beginning retained earnings for fair value adjustments related to the reclassification of certain equity investments in accordance with ASU 2016-01, adopted as of January 1, 2018.

[2] Cumulative-effect adjustment to beginning retained earnings related to the recognition of pre-existing lease liabilities and previously deferred gains on sale-leaseback transactions in accordance with ASU 2016-02, adopted as of January 1, 2019.

XML

Loans and Leases - Summary of Changes in Accretable Yields of Acquired Loans (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 133,342	$ 152,623
Additions	0	2,371
Transfers from non-accretable difference to accretable yield	(1,740)	(4)
Accretion	(29,506)	(37,115)
Changes in expected cash flows not affecting non-accretable differences	(2,927)	21,092
Balance at end of period	$ 99,169	$ 138,967

XML

Leases - Right-of-use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Right-of-use assets	$ 112,156	$ 94,200
Lease liabilities	$ 131,800	$ 118,900
Weighted average remaining lease term	7 years 11 months 12 days
Weighted average discount rate	3.14%

XML

Derivative Instruments and Other Hedging Activities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative Assets - Notional Amount	$ 3,759,695	$ 2,311,612
Derivative Liabilities - Notional Amount	2,994,815	1,991,559
Cash posted as variation margin for derivatives	106,500	35,800
Designated as Hedging Instruments
Derivative [Line Items]
Derivative Assets - Notional Amount	800,000	408,500
Derivative Liabilities - Notional Amount	108,500	0
Designated as Hedging Instruments | Interest rate contracts
Derivative [Line Items]
Derivative Assets - Notional Amount	800,000	408,500
Derivative Liabilities - Notional Amount	108,500	0
Not Designated as Hedging Instruments
Derivative [Line Items]
Derivative Assets - Notional Amount	2,959,695	1,903,112
Derivative Liabilities - Notional Amount	2,886,315	1,991,559
Not Designated as Hedging Instruments | Interest rate contracts
Derivative [Line Items]
Derivative Assets - Notional Amount	2,259,248	701,257
Derivative Liabilities - Notional Amount	142,425	919,653
Not Designated as Hedging Instruments | Customer swaps - upstream
Derivative [Line Items]
Derivative Assets - Notional Amount	142,425	919,653
Derivative Liabilities - Notional Amount	2,259,248	701,257
Not Designated as Hedging Instruments | Other contracts
Derivative [Line Items]
Derivative Assets - Notional Amount	74,085	50,527
Derivative Liabilities - Notional Amount	145,443	85,623
Not Designated as Hedging Instruments | Foreign exchange contracts
Derivative [Line Items]
Derivative Assets - Notional Amount	0	1,202
Derivative Liabilities - Notional Amount	0	1,202
Not Designated as Hedging Instruments | Forward sales contracts
Derivative [Line Items]
Derivative Assets - Notional Amount	144,368	1,140
Derivative Liabilities - Notional Amount	211,049	143,179
Not Designated as Hedging Instruments | Written and purchased options
Derivative [Line Items]
Derivative Assets - Notional Amount	339,569	229,333
Derivative Liabilities - Notional Amount	$ 128,150	$ 140,645

XML

Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Right-of-use assets	$ 94,200	$ 112,156
Lease liability	118,900	$ 131,800
Liabilities reclassed to right-of-used assets	$ 24,700
Ratio of ACL to all loans		1.20%

XML

Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Maturity (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Weighted Average Yield
Within one year or less	2.55%
One through five years	2.62%
After five through ten years	2.76%
Over ten years	2.67%
Weighted average yield	2.68%
Amortized Cost
Within one year or less	$ 10,720
One through five years	123,447
After five through ten years	760,325
Over ten years	3,281,041
Amortized Cost	4,175,533	$ 4,843,313
Estimated Fair Value
Within one year or less	10,787
One through five years	125,721
After five through ten years	786,040
Over ten years	3,315,534
Estimated fair value	$ 4,238,082	4,783,579
Weighted Average Yield
Within one year or less	2.33%
One through five years	2.63%
After five through ten years	2.35%
Over ten years	2.58%
Weighted average yield	2.53%
Amortized Cost
Within one year or less	$ 948
One through five years	4,483
After five through ten years	43,085
Over ten years	136,491
Amortized Cost	185,007	207,446
Estimated Fair Value
Within one year or less	949
One through five years	4,518
After five through ten years	44,653
Over ten years	142,466
Estimated fair value	$ 192,586	$ 204,277

XML

Loans and Leases - Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable
Net deferred loan origination fees	$ 37,800		$ 37,800		$ 30,200
Net discount	97,800		97,800		136,800
Deposit liabilities reclassified as loans receivable	7,000		7,000		9,200
Loans with carrying value pledged to secure public deposits and other borrowings	8,500,000		8,500,000		7,600,000
Acquired Loans
Accounts, Notes, Loans and Financing Receivable
Net discount	61,800		61,800		81,600
Sabadell United | Non-US
Accounts, Notes, Loans and Financing Receivable
Covered loans acquired	194,600		194,600		$ 202,600
TDRs Occurring during the Period | TDRs
Accounts, Notes, Loans and Financing Receivable
TDRs during period	$ 28,738	$ 6,537	61,028	$ 45,954
TDRs during period on accrual status			25,500	20,200
TDRs during period on non-accrual status			$ 35,500	$ 25,800

XML

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Cash dividends declared per common share (in usd per share)	$ 0.45	$ 0.39	$ 1.31	$ 1.15

XML

Allowance for Credit Losses and Credit Quality (Tables)

9 Months Ended

Sep. 30, 2019

Receivables [Abstract]

Schedule of Allowance for Loan Losses for Covered and Non-Covered Loan Portfolios

A summary of changes in the allowance for credit losses for the nine months ended September 30 was as follows:

(in thousands)	2019			2018
Allowance for loan and lease losses at beginning of period	$	140,571		$	140,891
Provision for loan and lease losses	32,190			26,678
Transfer of balance to OREO and other	(2,696		)	(5,709		)
Charge-offs	(29,971		)	(34,740		)
Recoveries	6,141			9,830
Allowance for loan and lease losses at end of period	$	146,235		$	136,950
Reserve for unfunded commitments at beginning of period	$	14,830		$	13,208
Balance created in acquisition accounting	—			900
Provision for unfunded lending commitments	1,314			613
Reserve for unfunded commitments at end of period	$	16,144		$	14,721
Allowance for credit losses at end of period	$	162,379		$	151,671

A summary of changes in the allowance for credit losses, by loan portfolio type, for the nine months ended September 30 was as follows:

	2019
(in thousands)	Commercial Real Estate			Commercial and Industrial			Residential Mortgage			Consumer and Other			Total
Allowance for loan and lease losses at beginning of period	$	51,806		$	54,096		$	12,998		$	21,671		$	140,571
Provision for (Reversal of) loan and lease losses	9,205			15,819			(152		)	7,318			32,190
Transfer of balance to OREO and other	(309		)	236			(2,879		)	256			(2,696		)
Charge-offs	(2,179		)	(17,799		)	(219		)	(9,774		)	(29,971		)
Recoveries	474			3,163			169			2,335			6,141
Allowance for loan and lease losses at end of period	$	58,997		$	55,515		$	9,917		$	21,806		$	146,235
Reserve for unfunded commitments at beginning of period	$	4,869		$	6,198		$	866		$	2,897		$	14,830
Provision for (Reversal of) unfunded commitments	357			493			(216		)	680			1,314
Reserve for unfunded commitments at end of period	$	5,226		$	6,691		$	650		$	3,577		$	16,144
Allowance on loans individually evaluated for impairment	$	2,721		$	7,974		$	281		$	3,039		$	14,015
Allowance on loans collectively evaluated for impairment	50,809			45,990			5,393			18,630			120,822
Allowance on loans acquired with deteriorated credit quality	5,467			1,551			4,243			137			11,398
Loans and leases, net of unearned income:
Balance at end of period	$	9,809,756		$	6,490,125		$	4,649,745		$	2,726,911		$	23,676,537
Balance at end of period individually evaluated for impairment	73,715			51,350			42,423			37,907			205,395
Balance at end of period collectively evaluated for impairment	9,605,296			6,417,426			4,526,508			2,636,015			23,185,245
Balance at end of period acquired with deteriorated credit quality	130,745			21,349			80,814			52,989			285,897

	2018
(in thousands)	Commercial Real Estate			Commercial and Industrial			Residential Mortgage			Consumer and Other			Total
Allowance for loan and lease losses at beginning of period	$	54,201		$	53,916		$	9,117		$	23,657		$	140,891
Provision for (Reversal of) loan and lease losses	(4,020		)	20,372			2,318			8,008			26,678
Transfer of balance to OREO and other	(1,556		)	(814		)	(45		)	(3,294		)	(5,709		)
Charge-offs	(1,281		)	(22,447		)	(365		)	(10,647		)	(34,740		)
Recoveries	1,019			5,665			53			3,093			9,830
Allowance for loan and lease losses at end of period	$	48,363		$	56,692		$	11,078		$	20,817		$	136,950
Reserve for unfunded commitments at beginning of period	$	4,531		$	5,309		$	555		$	2,813		$	13,208
Balance created in acquisition accounting	129			81			—			690			900
Provision for (Reversal of) unfunded commitments	(134		)	169			246			332			613
Reserve for unfunded commitments at end of period	$	4,526		$	5,559		$	801		$	3,835		$	14,721
Allowance on loans individually evaluated for impairment	$	2,650		$	10,471		$	154		$	2,973		$	16,248
Allowance on loans collectively evaluated for impairment	40,519			44,727			5,063			17,661			107,970
Allowance on loans acquired with deteriorated credit quality	5,194			1,494			5,861			183			12,732
Loans and leases, net of unearned income:
Balance at end of period	$	9,381,883		$	5,581,040		$	4,300,163		$	3,080,820		$	22,343,906
Balance at end of period individually evaluated for impairment	73,469			75,625			6,230			33,863			189,187
Balance at end of period collectively evaluated for impairment	9,126,653			5,478,377			4,174,524			2,970,301			21,749,855
Balance at end of period acquired with deteriorated credit quality	181,761			27,038			119,409			76,656			404,864

Investment in Legacy and Acquired Loans by Credit Quality Indicator

The recorded investment in loans and leases by credit quality indicator is presented in the following tables. Asset risk classifications for commercial loans and leases reflect the classification as of September 30, 2019 and December 31, 2018. Credit quality information in the tables below includes total loans acquired (including acquired impaired loans) at the net loan balance, after the application of premiums and discounts. Loan premiums and discounts represent the adjustment of acquired loans to fair value at the acquisition date, as adjusted for income accretion and changes in cash flow estimates in subsequent periods.

	September 30, 2019												December 31, 2018
(in thousands)	Pass		Special Mention		Sub- standard		Doubtful		Loss		Total		Pass		Special Mention		Sub- standard		Doubtful		Total
Real estate - construction	$	1,300,847	$	19,631	$	9,536	$	—	$	—	$	1,330,014	$	1,182,554	$	1,062	$	12,740	$	10	$	1,196,366
Real estate - owner-occupied	2,409,221		19,786		38,214		840		—		2,468,061		2,328,999		25,526		41,297		—		2,395,822
Real estate - non-owner-occupied	5,926,537		47,494		37,193		447		10		6,011,681		5,687,963		78,009		26,512		3,633		5,796,117
Commercial and industrial	6,340,738		71,431		63,303		14,653		—		6,490,125		5,586,482		52,632		73,853		24,050		5,737,017
Total	$	15,977,343	$	158,342	$	148,246	$	15,940	$	10	$	16,299,881	$	14,785,998	$	157,229	$	154,402	$	27,693	$	15,125,322

	September 30, 2019						December 31, 2018
(in thousands)	Current		30+ Days Past Due		Total		Current		30+ Days Past Due		Total
Residential mortgage	$	4,567,633	$	82,112	$	4,649,745	$	4,290,152	$	69,004	$	4,359,156
Consumer - home equity	2,011,913		41,675		2,053,588		2,258,659		46,035		2,304,694
Consumer - other	665,702		7,621		673,323		721,231		9,412		730,643
Total	$	7,245,248	$	131,408	$	7,376,656	$	7,270,042	$	124,451	$	7,394,493

Schedule of Investment in Legacy Impaired Loans

Information on the Company’s investment in impaired loans, which include all TDRs and all other non-accrual loans evaluated or measured individually for impairment for purposes of determining the ALLL, is presented in the following tables as of and for the periods indicated.

	September 30, 2019							December 31, 2018
	Unpaid Principal Balance		Recorded Investment		Related Allowance			Unpaid Principal Balance		Recorded Investment		Related Allowance
(in thousands)
With no related allowance recorded:
Real estate - construction	$	9,540	$	8,531	$	—		$	10,261	$	9,262	$	—
Real estate - owner-occupied	33,985		33,590		—			25,037		19,044		—
Real estate - non-owner-occupied	23,964		22,652		—			15,265		14,288		—
Commercial and industrial	21,813		17,771		—			55,554		43,886		—
Residential mortgage	36,182		35,089		—			1,244		1,221		—
Consumer - home equity	4,736		4,734		—			4,183		4,176		—
With an allowance recorded:
Real estate - construction	98		85		(1		)	228		140		(11		)
Real estate - owner-occupied	5,135		4,921		(2,529		)	5,032		4,773		(520		)
Real estate - non-owner-occupied	4,149		3,936		(191		)	6,445		6,398		(105		)
Commercial and industrial	45,409		33,579		(7,974		)	46,387		27,915		(12,646		)
Residential mortgage	8,010		7,334		(281		)	5,870		5,358		(145		)
Consumer - home equity	29,773		29,124		(2,577		)	29,284		28,818		(2,427		)
Consumer - other	4,308		4,049		(462		)	4,956		4,446		(488		)
Total	$	227,102	$	205,395	$	(14,015	)	$	209,746	$	169,725	$	(16,342	)
Total commercial loans and leases	$	144,093	$	125,065	$	(10,695	)	$	164,209	$	125,706	$	(13,282	)
Total residential mortgage loans	44,192		42,423		(281		)	7,114		6,579		(145		)
Total consumer and other loans	38,817		37,907		(3,039		)	38,423		37,440		(2,915		)

	Three Months Ended September 30, 2019				Three Months Ended September 30, 2018				Nine Months Ended September 30, 2019				Nine Months Ended September 30, 2018
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
(in thousands)
With no related allowance recorded:
Real estate - construction	$	7,333	$	82	$	10,806	$	164	$	7,145	$	242	$	10,371	$	460
Real estate - owner-occupied	33,895		355		34,118		209		34,437		1,235		34,505		903
Real estate - non-owner-occupied	22,794		72		22,091		249		22,910		301		22,988		746
Commercial and industrial	20,594		108		43,409		523		20,727		401		40,564		1,543
Residential mortgage	35,896		136		1,254		9		31,315		391		1,271		36
Consumer - home equity	4,736		47		705		2		4,613		137		708		16
With an allowance recorded:
Real estate - construction	87		—		148		—		93		—		151		1
Real estate - owner-occupied	4,952		10		4,006		83		5,050		113		4,044		102
Real estate - non-owner-occupied	4,155		46		2,398		20		4,090		137		2,442		76
Commercial and industrial	36,824		173		40,357		150		36,765		582		47,098		720
Residential mortgage	7,414		74		5,014		50		7,502		232		5,066		149
Consumer - home equity	29,200		298		28,577		305		28,982		890		27,905		892
Consumer - other	4,175		59		4,710		65		4,326		184		4,884		208
Total	$	212,055	$	1,460	$	197,593	$	1,829	$	207,955	$	4,845	$	201,997	$	5,852
Total commercial loans and leases	$	130,634	$	846	$	157,333	$	1,398	$	131,217	$	3,011	$	162,163	$	4,551
Total residential mortgage loans	43,310		210		6,268		59		38,817		623		6,337		185
Total consumer and other loans	38,111		404		33,992		372		37,921		1,211		33,497		1,116

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Securities held to maturity, fair values	$ 192,586	$ 204,277
Preferred stock, par value (in usd per share)	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Liquidation preference (per share)	$ 10,000	$ 10,000
Preferred stock, shares issued	23,750	13,750
Preferred stock, shares outstanding	23,750	13,750
Common stock, par value (in usd per share)	$ 1	$ 1
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	52,265,887	54,796,231
Common stock, shares outstanding	52,265,887	54,796,231

XML

Subsequent Events

9 Months Ended

Sep. 30, 2019

Subsequent Events [Abstract]

Subsequent Events

SUBSEQUENT EVENTS

On November 3, 2019, the Company entered into a definitive agreement with First Horizon National Corporation (“First Horizon”) under which the companies will combine in an all-stock merger of equals. As a result of the merger, each share of the Company's common stock will be exchanged for 4.584 shares of First Horizon common stock. Under the terms of the agreement, which was unanimously approved by the Boards of Directors of both companies, the combined organization will operate under the First Horizon name and will be headquartered in Memphis, Tennessee. The merger is expected to close in the second quarter of 2020, subject to satisfaction of customary closing conditions, including receipt of customary regulatory approvals and approval by the shareholders of each company.

XML

Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

FAIR VALUE OF FINANCIAL INSTRUMENTS

The estimated fair value of a financial instrument is the current amount that would be exchanged between willing parties, other than in a forced liquidation. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company’s various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. ASC Topic 825, Financial Instruments, excludes certain financial instruments and all non-financial instruments from its disclosure requirements. Consequently, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company.

The carrying amount and estimated fair values of the Company’s financial instruments, as well as the level within the fair value hierarchy, are included in the tables below. See Note 1, Summary of Significant Accounting Policies, and Note 2, Recent Accounting Pronouncements, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

		September 30, 2019
(in thousands)		Carrying  Amount		Fair Value		Level 1		Level 2		Level 3
Measurement Category
Fair Value
	Financial Assets
	Securities available for sale	$	4,238,082	$	4,238,082	$	—	$	4,238,082	$	—
	Mortgage loans held for sale	255,276		255,276		—		255,276		—
	Mortgage loans held for investment, at fair value option	4,138		4,138		—		—		4,138
	Derivative instruments	136,235		136,235		—		136,235		—
	Financial Liabilities
	Derivative instruments	10,851		10,851		—		10,851		—
Amortized Cost
	Financial Assets
	Cash and cash equivalents	$	930,933	$	930,933	$	930,933	$	—	$	—
	Securities held to maturity	185,007		192,586		—		192,586		—
	Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	23,526,164		23,290,286		—		—		23,290,286
	Financial Liabilities
	Deposits	24,977,285		24,985,510		—		24,985,510		—
	Short-term borrowings	498,049		498,049		223,049		275,000		—
	Long-term debt	1,394,202		1,391,857		—		—		1,391,857

		December 31, 2018
(in thousands)		Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Measurement Category
Fair Value
	Financial Assets
	Securities available for sale	$	4,783,579	$	4,783,579	$	—	$	4,783,579	$	—
	Mortgage loans held for sale	107,734		107,734		—		107,734		—
	Mortgage loans held for investment, at fair value option	3,143		3,143		—		—		3,143
	Derivative instruments	27,048		27,048		—		27,048		—
	Financial Liabilities
	Derivative instruments	22,124		22,124		—		22,124		—
Amortized Cost
	Financial Assets
	Cash and cash equivalents	$	690,453	$	690,453	$	690,453	$	—	$	—
	Securities held to maturity	207,446		204,277		—		204,277		—
	Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	22,376,101		22,088,236		—		—		22,088,236
	Financial Liabilities
	Deposits	23,763,431		23,752,139		—		23,752,139		—
	Short-term borrowings	1,482,882		1,482,882		315,882		1,167,000		—
	Long-term debt	1,166,151		1,154,062		—		—		1,154,062

The fair value estimates presented herein are based upon pertinent information available to management as of September 30, 2019 and December 31, 2018. Although management is not aware of any factors that would significantly affect the estimated fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since these dates and, therefore, current estimates of fair value may differ significantly from the amounts presented herein.

XML

Leases - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Lessor, Lease, Description [Line Items]
Lease expense	$ 6.9	$ 20.5
Amounts included in measurement of lease liabilities	6.7	21.1
Amount to obtain ROU assets	18.1	$ 31.3
Term of options to extend leases		12 months
Term for option to terminate leases		1 year
Interest income for sales-type and direct finance leases	$ 3.1	$ 7.4
Minimum
Lessor, Lease, Description [Line Items]
Term of contract on operating lease	1 year	1 year
Renewal term of operating lease	1 year	1 year
Remaining lease terms on sales type and direct finance leases		3 years
Maximum
Lessor, Lease, Description [Line Items]
Term of contract on operating lease	44 years	44 years
Renewal term of operating lease	5 years	5 years
Remaining lease terms on sales type and direct finance leases		20 years

XML

Derivative Instruments and Other Hedging Activities - Schedule of Outstanding Derivative Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative Assets - Fair Value	$ 136,235	$ 27,048
Derivative Liabilities - Fair Value	10,851	22,124
Designated as Hedging Instruments
Derivative [Line Items]
Derivative Assets - Fair Value	23,339	3,469
Derivative Liabilities - Fair Value	0	0
Other Assets | Designated as Hedging Instruments | Interest rate contracts
Derivative [Line Items]
Derivative Assets - Fair Value	23,339	3,469
Other Assets | Not Designated as Hedging Instruments
Derivative [Line Items]
Derivative Assets - Fair Value	112,896	23,579
Other Assets | Not Designated as Hedging Instruments | Interest rate contracts
Derivative [Line Items]
Derivative Assets - Fair Value	104,779	16,946
Other Assets | Not Designated as Hedging Instruments | Customer swaps - upstream
Derivative [Line Items]
Derivative Assets - Fair Value	12	474
Other Assets | Not Designated as Hedging Instruments | Foreign exchange contracts
Derivative [Line Items]
Derivative Assets - Fair Value	0	18
Other Assets | Not Designated as Hedging Instruments | Forward sales contracts
Derivative [Line Items]
Derivative Assets - Fair Value	485	630
Other Assets | Not Designated as Hedging Instruments | Written and purchased options
Derivative [Line Items]
Derivative Assets - Fair Value	7,549	5,490
Other Assets | Not Designated as Hedging Instruments | Other contracts
Derivative [Line Items]
Derivative Assets - Fair Value	71	21
Other Liabilities | Designated as Hedging Instruments | Interest rate contracts
Derivative [Line Items]
Derivative Liabilities - Fair Value	0	0
Other Liabilities | Not Designated as Hedging Instruments
Derivative [Line Items]
Derivative Liabilities - Fair Value	10,851	22,124
Other Liabilities | Not Designated as Hedging Instruments | Interest rate contracts
Derivative [Line Items]
Derivative Liabilities - Fair Value	206	17,812
Other Liabilities | Not Designated as Hedging Instruments | Customer swaps - upstream
Derivative [Line Items]
Derivative Liabilities - Fair Value	6,104	191
Other Liabilities | Not Designated as Hedging Instruments | Foreign exchange contracts
Derivative [Line Items]
Derivative Liabilities - Fair Value	0	18
Other Liabilities | Not Designated as Hedging Instruments | Forward sales contracts
Derivative [Line Items]
Derivative Liabilities - Fair Value	654	750
Other Liabilities | Not Designated as Hedging Instruments | Written and purchased options
Derivative [Line Items]
Derivative Liabilities - Fair Value	3,695	3,310
Other Liabilities | Not Designated as Hedging Instruments | Other contracts
Derivative [Line Items]
Derivative Liabilities - Fair Value	$ 192	$ 43

XML

Loans and Leases - Schedule of Aging of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable
Accruing	$ 59,408	$ 59,460
Non-accrual Loans	153,113	137,184
Acquired Impaired Loans	205,395	169,725
Total Loans	23,676,537	22,519,815
Non-accrual loans 30-59 days past due	10,700	7,000
Non-accrual loans past due 60-89 days	4,500	3,700
Non-accrual loans over 90 days past due	73,400	66,900
Commercial Loans
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	125,065	125,706
Total Loans	16,299,881	15,125,322
Commercial Loans | Real estate - construction
Accounts, Notes, Loans and Financing Receivable
Accruing	3,851	1,054
Non-accrual Loans	1,381	1,094
Total Loans	1,330,014	1,196,366
Commercial Loans | Real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable
Accruing	3,325	7,167
Non-accrual Loans	17,158	10,260
Total Loans	2,468,061	2,395,822
Commercial Loans | Real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable
Accruing	5,191	7,833
Non-accrual Loans	20,201	15,898
Total Loans	6,011,681	5,796,117
Commercial Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable
Accruing	8,079	7,012
Non-accrual Loans	43,494	57,860
Total Loans	6,490,125	5,737,017
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	42,423	6,579
Residential mortgage loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable
Current	4,567,633	4,290,152
Accruing	16,383	17,406
Non-accrual Loans	50,439	30,396
Total Loans	4,649,745	4,359,156
Consumer and Other Loans
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	37,907	37,440
Consumer and Other Loans | Consumer - Home equity
Accounts, Notes, Loans and Financing Receivable
Current	2,011,913	2,258,659
Accruing	17,240	12,692
Non-accrual Loans	18,311	18,830
Total Loans	2,053,588	2,304,694
Consumer and Other Loans | Consumer - Other
Accounts, Notes, Loans and Financing Receivable
Current	665,702	721,231
Accruing	5,339	6,296
Non-accrual Loans	2,129	2,846
Total Loans	673,323	730,643
Current or Less Than 30 days past due
Accounts, Notes, Loans and Financing Receivable
Current	23,178,119	21,959,758
Current or Less Than 30 days past due | Commercial Loans | Real estate - construction
Accounts, Notes, Loans and Financing Receivable
Current	1,307,793	1,167,795
Current or Less Than 30 days past due | Commercial Loans | Real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable
Current	2,389,631	2,305,743
Current or Less Than 30 days past due | Commercial Loans | Real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable
Current	5,930,480	5,703,131
Current or Less Than 30 days past due | Commercial Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable
Current	6,417,203	5,645,304
Current or Less Than 30 days past due | Residential mortgage loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable
Current	4,502,109	4,218,146
Current or Less Than 30 days past due | Consumer and Other Loans | Consumer - Home equity
Accounts, Notes, Loans and Financing Receivable
Current	1,967,342	2,200,517
Current or Less Than 30 days past due | Consumer and Other Loans | Consumer - Other
Accounts, Notes, Loans and Financing Receivable
Current	663,561	719,122
30-59 days
Accounts, Notes, Loans and Financing Receivable
Accruing	26,391	38,579
30-59 days | Commercial Loans | Real estate - construction
Accounts, Notes, Loans and Financing Receivable
Accruing	3,851	1,054
30-59 days | Commercial Loans | Real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable
Accruing	2,294	7,167
30-59 days | Commercial Loans | Real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable
Accruing	2,093	7,473
30-59 days | Commercial Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable
Accruing	3,614	5,139
30-59 days | Residential mortgage loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable
Accruing	1,252	2,768
30-59 days | Consumer and Other Loans | Consumer - Home equity
Accounts, Notes, Loans and Financing Receivable
Accruing	10,448	10,283
30-59 days | Consumer and Other Loans | Consumer - Other
Accounts, Notes, Loans and Financing Receivable
Accruing	2,839	4,695
60-89 days
Accounts, Notes, Loans and Financing Receivable
Accruing	28,227	18,753
60-89 days | Commercial Loans | Real estate - construction
Accounts, Notes, Loans and Financing Receivable
Accruing	0	0
60-89 days | Commercial Loans | Real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable
Accruing	1,031	0
60-89 days | Commercial Loans | Real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable
Accruing	2,672	360
60-89 days | Commercial Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable
Accruing	1,769	1,320
60-89 days | Residential mortgage loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable
Accruing	13,463	13,063
60-89 days | Consumer and Other Loans | Consumer - Home equity
Accounts, Notes, Loans and Financing Receivable
Accruing	6,792	2,409
60-89 days | Consumer and Other Loans | Consumer - Other
Accounts, Notes, Loans and Financing Receivable
Accruing	2,500	1,601
Greater than 90 days
Accounts, Notes, Loans and Financing Receivable
Accruing	4,790	2,128
Greater than 90 days | Commercial Loans | Real estate - construction
Accounts, Notes, Loans and Financing Receivable
Accruing	0	0
Greater than 90 days | Commercial Loans | Real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable
Accruing	0	0
Greater than 90 days | Commercial Loans | Real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable
Accruing	426	0
Greater than 90 days | Commercial Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable
Accruing	2,696	553
Greater than 90 days | Residential mortgage loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable
Accruing	1,668	1,575
Greater than 90 days | Consumer and Other Loans | Consumer - Home equity
Accounts, Notes, Loans and Financing Receivable
Accruing	0	0
Greater than 90 days | Consumer and Other Loans | Consumer - Other
Accounts, Notes, Loans and Financing Receivable
Accruing	0	0
Acquired Loans
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	285,897	363,413
Acquired Loans | Commercial Loans | Real estate - construction
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	16,989	26,423
Acquired Loans | Commercial Loans | Real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	57,947	72,652
Acquired Loans | Commercial Loans | Real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	55,809	69,255
Acquired Loans | Commercial Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	21,349	26,841
Acquired Loans | Residential mortgage loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	80,814	93,208
Acquired Loans | Consumer and Other Loans | Consumer - Home equity
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	50,695	72,655
Acquired Loans | Consumer and Other Loans | Consumer - Other
Accounts, Notes, Loans and Financing Receivable
Acquired Impaired Loans	$ 2,294	$ 2,379

XML

Investment Securities - Schedule of Amortized Cost and Fair Values of Investment Securities, with Gross Unrealized Gains and Losses (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities
Amortized Cost	$ 4,175,533	$ 4,843,313
Gross Unrealized Gains	66,763	13,648
Gross Unrealized Losses	(4,214)	(73,382)
Estimated Fair Value	4,238,082	4,783,579
Schedule of Held-to-maturity Securities
Amortized Cost	185,007	207,446
Gross Unrealized Gains	7,775	339
Gross Unrealized Losses	(196)	(3,508)
Estimated Fair Value	192,586	204,277
Fair value of securities held as collateral	2,100,000	2,400,000
U.S. Government-sponsored enterprise obligations
Schedule of Available-for-sale Securities
Amortized Cost	39,887	995
Gross Unrealized Gains	294	3
Gross Unrealized Losses	0	0
Estimated Fair Value	40,181	998
Obligations of state and political subdivisions
Schedule of Available-for-sale Securities
Amortized Cost	166,034	177,566
Gross Unrealized Gains	7,333	2,045
Gross Unrealized Losses	0	(723)
Estimated Fair Value	173,367	178,888
Schedule of Held-to-maturity Securities
Amortized Cost	167,888	188,684
Gross Unrealized Gains	7,725	309
Gross Unrealized Losses	0	(2,497)
Estimated Fair Value	175,613	186,496
Mortgage-backed securities: Residential agency
Schedule of Available-for-sale Securities
Amortized Cost	3,135,619	3,837,584
Gross Unrealized Gains	31,354	8,886
Gross Unrealized Losses	(3,930)	(57,073)
Estimated Fair Value	3,163,043	3,789,397
Schedule of Held-to-maturity Securities
Amortized Cost	17,119	18,762
Gross Unrealized Gains	50	30
Gross Unrealized Losses	(196)	(1,011)
Estimated Fair Value	16,973	17,781
Mortgage-backed securities: Commercial agency
Schedule of Available-for-sale Securities
Amortized Cost	732,669	730,148
Gross Unrealized Gains	24,239	2,363
Gross Unrealized Losses	(179)	(14,799)
Estimated Fair Value	756,729	717,712
Other securities
Schedule of Available-for-sale Securities
Amortized Cost	101,324	97,020
Gross Unrealized Gains	3,543	351
Gross Unrealized Losses	(105)	(787)
Estimated Fair Value	$ 104,762	$ 96,584

XML

Investment Securities - Schedule of Realized Gains and Losses from Sale of Securities Classified as Available for Sale (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Realized gains	$ 27	$ 0	$ 1,324	$ 39
Realized losses	0	0	(2,311)	(95)
Realized gains (losses)	$ 27	$ 0	$ (987)	$ (56)

XML

Related Party Transactions

9 Months Ended

Sep. 30, 2019

Related Party Transactions [Abstract]

Related Party Transactions

RELATED PARTY TRANSACTIONS

In the ordinary course of business, the Company may execute transactions with various related parties. Examples of such transactions may include lending or deposit arrangements, transfers of financial assets, services for administrative support, and other miscellaneous items.

The Company has granted loans to executive officers and directors and their affiliates. These loans, including the related principal additions, principal payments, and unfunded commitments are not material to the consolidated financial statements at September 30, 2019 and December 31, 2018. There were no outstanding loans to such related parties classified as non-accrual, past due, or troubled debt restructurings at September 30, 2019.

Deposits from related parties held by the Company were not material at September 30, 2019 and December 31, 2018.

XML

Fair Value Measurements

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

Recurring fair value measurements

The following table presents information about the Company's assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2019 and December 31, 2018 and their classification within the fair value hierarchy. See Note 1, Summary of Significant Accounting Policies, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

	September 30, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Securities available for sale	$	—	$	4,238,082	$	—	$	4,238,082
Mortgage loans held for sale	—		255,276		—		255,276
Mortgage loans held for investment, at fair value option	—		—		4,138		4,138
Derivative instruments	—		136,235		—		136,235
Total	$	—	$	4,629,593	$	4,138	$	4,633,731
Liabilities
Derivative instruments	$	—	$	10,851	$	—	$	10,851
Total	$	—	$	10,851	$	—	$	10,851
	December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets
Securities available for sale	$	—	$	4,783,579	$	—	$	4,783,579
Mortgage loans held for sale	—		107,734		—		107,734
Mortgage loans held for investment, at fair value option	—		—		3,143		3,143
Derivative instruments	—		27,048		—		27,048
Total	$	—	$	4,918,361	$	3,143	$	4,921,504
Liabilities
Derivative instruments	$	—	$	22,124	$	—	$	22,124
Total	$	—	$	22,124	$	—	$	22,124

During the nine months ended September 30, 2019, there were no transfers between the Level 1 and Level 2 fair value categories.

Non-recurring fair value measurements

The Company holds certain assets that are measured at fair value only in certain circumstances, such as impairment. The following table presents information about the Company's assets that are measured at fair value and still held as of September 30, 2019 and December 31, 2018 for which a non-recurring fair value adjustment was recorded during the periods then ended. See Note 1, Summary of Significant Accounting Policies, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

	September 30, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Impaired loans	$	—	$	—	$	79,442	$	79,442
OREO, net	—		—		4,008		4,008
Total	$	—	$	—	$	83,450	$	83,450
	December 31, 2018
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Impaired loans	$	—	$	—	$	65,914	$	65,914
OREO, net	—		—		6,433		6,433
Total	$	—	$	—	$	72,347	$	72,347

The tables above exclude the initial measurement of assets and liabilities that were acquired as part of business combinations. These assets and liabilities were recorded at their fair value upon acquisition in accordance with GAAP and were not re-measured during the periods presented unless specifically required by GAAP. Acquisition date fair values represent either Level 2 fair value measurements (investment securities, deposits, and premises and equipment) or Level 3 fair value measurements (loans, core deposit intangible assets, and debt). Refer to Note 3, Acquisition Activity, in the Annual Report on Form 10-K for the year ended December 31, 2018, for further detail.

The Company did not record any liabilities at fair value for which measurement of the fair value was made on a non-recurring basis as of September 30, 2019 and December 31, 2018.

Fair value option

The Company has elected the fair value option for originated residential mortgage loans held for sale, which allows for a more effective offset of the changes in fair values of the loans and the derivative instruments used to hedge them without the burden of complying with the requirements for hedge accounting. The Company also has a portion of mortgage loans held for investment for which the fair value option was elected upon origination and which continue to be accounted for at fair value at September 30, 2019 and December 31, 2018, respectively.

The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for mortgage loans held for sale and mortgage loans held for investment measured at fair value:

	September 30, 2019							December 31, 2018
(in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal		Aggregate Fair Value Less Unpaid Principal			Aggregate Fair Value		Aggregate Unpaid Principal		Aggregate Fair Value Less Unpaid Principal
Mortgage loans held for sale, at fair value	$	255,276	$	248,256	$	7,020		$	107,734	$	104,345	$	3,389
Mortgage loans held for investment, at fair value	4,138		4,306		(168		)	3,143		3,595		(452		)

Interest income on mortgage loans held for sale and mortgage loans held for investment at fair value option is recognized based on contractual rates and is reflected in interest income on loans held for sale in the consolidated statements of comprehensive income. The following table details net gains (losses) resulting from the change in fair value of loans that were recorded in mortgage income in the consolidated statements of comprehensive income for the three and nine months ended September 30, 2019 and 2018. The changes in fair value are mostly offset by economic hedging activities, with an insignificant portion of these changes attributable to changes in instrument-specific credit risk.

	Net Gains (Losses) Resulting From Changes in Fair Value
	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(in thousands)	2019			2018			2019		2018
Fair value option
Mortgage loans held for sale, at fair value	$	100		$	(1,041	)	$	3,631	$	(2,513	)
Mortgage loans held for investment, at fair value	(14		)	(296		)	73		(1,217		)

XML

Loans and Leases (Tables)

9 Months Ended

Sep. 30, 2019

Receivables [Abstract]

Schedule of Non-Covered and Covered Loans

Loans and leases by portfolio segment and class consisted of the following for the periods indicated:

(in thousands)	September 30, 2019		December 31, 2018
Commercial loans and leases:
Real estate - construction	$	1,330,014	$	1,196,366
Real estate - owner-occupied	2,468,061		2,395,822
Real estate - non-owner-occupied	6,011,681		5,796,117
Commercial and industrial (1)	6,490,125		5,737,017
Total commercial loans and leases	16,299,881		15,125,322
Residential mortgage loans	4,649,745		4,359,156
Consumer and other loans:
Home equity	2,053,588		2,304,694
Other	673,323		730,643
Total consumer and other loans	2,726,911		3,035,337
Total loans and leases	$	23,676,537	$	22,519,815

⁽¹⁾ 

Includes equipment financing leases

Schedule of Aging of Loans

The following tables provide an analysis of the aging of loans and leases as of September 30, 2019 and December 31, 2018. Past due and non-accrual loan amounts exclude acquired impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans. For additional information on the determination of past due status and the Company's policies for recording payments received, placing loans and leases on non-accrual status, and the resumption of interest accrual on non-accruing loans and leases, see Note 1, Summary of Significant Accounting Policies, in the 2018 10-K.

	September 30, 2019
	Accruing
(in thousands)	Current or Less Than 30 days Past Due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual (1)		Acquired Impaired		Total
Real estate- construction	$	1,307,793	$	3,851	$	—	$	—	$	3,851	$	1,381	$	16,989	$	1,330,014
Real estate- owner-occupied	2,389,631		2,294		1,031		—		3,325		17,158		57,947		2,468,061
Real estate- non-owner-occupied	5,930,480		2,093		2,672		426		5,191		20,201		55,809		6,011,681
Commercial and industrial	6,417,203		3,614		1,769		2,696		8,079		43,494		21,349		6,490,125
Residential mortgage	4,502,109		1,252		13,463		1,668		16,383		50,439		80,814		4,649,745
Consumer - home equity	1,967,342		10,448		6,792		—		17,240		18,311		50,695		2,053,588
Consumer - other	663,561		2,839		2,500		—		5,339		2,129		2,294		673,323
Total	$	23,178,119	$	26,391	$	28,227	$	4,790	$	59,408	$	153,113	$	285,897	$	23,676,537

⁽¹⁾  Of the total non-accrual loans at September 30, 2019, $10.7 million were past due 30-59 days, $4.5 million were past due 60-89 days, and $73.4 million were past due more than 90 days.

	December 31, 2018
	Accruing
(in thousands)	Current or Less Than 30 days Past Due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual (1)		Acquired Impaired		Total
Real estate- construction	$	1,167,795	$	1,054	$	—	$	—	$	1,054	$	1,094	$	26,423	$	1,196,366
Real estate- owner-occupied	2,305,743		7,167		—		—		7,167		10,260		72,652		2,395,822
Real estate- non-owner-occupied	5,703,131		7,473		360		—		7,833		15,898		69,255		5,796,117
Commercial and industrial	5,645,304		5,139		1,320		553		7,012		57,860		26,841		5,737,017
Residential mortgage	4,218,146		2,768		13,063		1,575		17,406		30,396		93,208		4,359,156
Consumer - home equity	2,200,517		10,283		2,409		—		12,692		18,830		72,655		2,304,694
Consumer - other	719,122		4,695		1,601		—		6,296		2,846		2,379		730,643
Total	$	21,959,758	$	38,579	$	18,753	$	2,128	$	59,460	$	137,184	$	363,413	$	22,519,815

⁽¹⁾  Of the total non-accrual loans at December 31, 2018, $7.0 million were past due 30-59 days, $3.7 million were past due 60-89 days, and $66.9 million were past due more than 90 days.

Summary of Changes in Accretable Yields of Acquired Loans

The following is a summary of changes in the accretable difference for all loans accounted for under ASC 310-30 during the nine months ended September 30:

(in thousands)	2019			2018
Balance at beginning of period	$	133,342		$	152,623
Additions	—			2,371
Transfers from non-accretable difference to accretable yield	(1,740		)	(4		)
Accretion	(29,506		)	(37,115		)
Changes in expected cash flows not affecting non-accretable differences (1)	(2,927		)	21,092
Balance at end of period	$	99,169		$	138,967

⁽¹⁾ 

Includes changes in cash flows expected to be collected due to the impact of changes in actual or expected timing of liquidation events, modifications, changes in interest rates and changes in prepayment assumptions.

Schedule of Modified TDRs

The following table provides information on how the TDRs were modified during the periods indicated:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Extended maturities	$	2,476	$	3,658	$	13,097	$	10,020
Maturity and interest rate adjustment	288		267		715		368
Movement to or extension of interest-rate only payments	48		—		1,827		48
Interest rate adjustment	—		—		71		101
Forbearance	22,202		802		25,068		14,386
Other concession(s) (1)	3,724		1,810		20,250		21,031
Total	$	28,738	$	6,537	$	61,028	$	45,954

⁽¹⁾ 

Other concessions may include covenant waivers, forgiveness of principal or interest associated with a customer bankruptcy, or a combination of any of the above concessions.

Schedule of Subsequently Defaulted TDRs

The following table presents the end of period balance for loans modified in a TDR during the periods indicated:

	Three Months Ended September 30,
	2019					2018
(in thousands, except number of loans)	Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Real estate- construction	1	$	6,331	$	7,602	—	$	—	$	—
Real estate- owner-occupied	7	8,936		8,691		1	2,312		2,312
Real estate- non-owner-occupied	6	1,553		1,210		6	1,818		1,790
Commercial and industrial	14	1,954		1,952		9	829		804
Residential mortgage	10	7,210		6,870		3	257		255
Consumer - home equity	19	2,375		2,237		15	1,152		1,124
Consumer - other	17	202		176		11	352		252
Total	74	$	28,561	$	28,738	45	$	6,720	$	6,537

	Nine Months Ended September 30,
	2019					2018
(in thousands, except number of loans)	Number of Loans	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment		Number of Loans	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment
Real estate- construction	1	$	6,331	$	7,602	1	$	1,950	$	976
Real estate- owner-occupied	11	10,153		9,869		8	15,233		13,373
Real estate- non-owner-occupied	16	7,931		7,233		13	3,228		3,064
Commercial and industrial	48	29,156		19,594		32	32,827		22,769
Residential mortgage	28	8,897		8,524		9	898		837
Consumer - home equity	69	7,629		7,268		47	4,130		4,047
Consumer - other	63	1,065		938		53	1,056		888
Total	236	$	71,162	$	61,028	163	$	59,322	$	45,954

Information detailing TDRs that defaulted during the three-month and nine-month periods ended September 30, 2019 and 2018, and were modified in the previous twelve months (i.e., the twelve months prior to the default) is presented in the following tables. The Company has defined a default as any loan with a payment that is currently past due greater than 30 days, or was past due greater than 30 days at any point during the respective periods, or since the date of modification, whichever is shorter.

	Three Months Ended September 30,
	2019			2018
(in thousands, except number of loans)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Real estate- owner-occupied	—	$	—	1	$	929
Real estate- non-owner-occupied	2	2,460		1	7
Commercial and industrial	8	1,429		2	127
Residential mortgage	1	101		—	—
Consumer - home equity	1	64		4	380
Consumer - other	5	57		6	86
Total	17	$	4,111	14	$	1,529

	Nine Months Ended September 30,
	2019			2018
(in thousands, except number of loans)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Real estate- owner-occupied	6	$	1,225	6	$	10,101
Real estate- non-owner-occupied	16	5,176		6	1,084
Commercial and industrial	25	6,859		12	3,632
Residential mortgage	18	1,394		8	912
Consumer - home equity	21	1,873		17	1,978
Consumer - other	38	557		39	488
Total	124	$	17,084	88	$	18,195

XML

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2017		13,750	53,872,272
Beginning balance at Dec. 31, 2017	$ 3,696,791	$ 132,097	$ 53,872	$ 2,787,484	$ 769,226	$ (45,888)
Increase (Decrease) in Shareholders' Equity
Net income	240,210				240,210
Other comprehensive income (loss)	(87,476)					(87,476)
Cash dividends declared	(64,288)				(64,288)
Preferred stock dividends	(8,146)				(8,146)
Common stock issued under incentive plans, net of shares surrendered in payment (in shares)			109,983
Common stock issued under incentive plans, net of shares surrendered in payment	(3,142)		$ 110	(3,252)
Common stock issued for acquisitions (in shares)			2,787,773
Common stock issued for acquisitions	214,659		$ 2,788	211,871
Common stock repurchases (in shares)			(763,210)
Common stock repurchases	(61,046)		$ (763)	(60,283)
Share-based compensation expense	15,144			15,144
Ending balance (in shares) at Sep. 30, 2018		13,750	56,006,818
Ending balance at Sep. 30, 2018	3,942,361	$ 132,097	$ 56,007	2,950,964	936,657	(133,364)
Beginning balance (in shares) at Jun. 30, 2018		13,750	56,390,387
Beginning balance at Jun. 30, 2018	3,913,409	$ 132,097	$ 56,390	2,976,833	860,073	(111,984)
Increase (Decrease) in Shareholders' Equity
Net income	101,465				101,465
Other comprehensive income (loss)	(21,380)					(21,380)
Cash dividends declared	(21,282)				(21,282)
Preferred stock dividends	(3,599)				(3,599)
Common stock issued under incentive plans, net of shares surrendered in payment (in shares)			(20,359)
Common stock issued under incentive plans, net of shares surrendered in payment	(1,040)		$ (20)	(1,020)
Common stock repurchases (in shares)			(363,210)
Common stock repurchases	(30,376)		$ (363)	(30,013)
Share-based compensation expense	5,164			5,164
Ending balance (in shares) at Sep. 30, 2018		13,750	56,006,818
Ending balance at Sep. 30, 2018	3,942,361	$ 132,097	$ 56,007	2,950,964	936,657	(133,364)
Beginning balance (in shares) at Dec. 31, 2018		13,750	54,796,231
Beginning balance at Dec. 31, 2018	4,056,277	$ 132,097	$ 54,796	2,869,416	1,042,718	(42,750)
Increase (Decrease) in Shareholders' Equity
Net income	301,579				301,579
Other comprehensive income (loss)	96,693					96,693
Cash dividends declared	(69,720)				(69,720)
Preferred stock dividends	(8,146)				(8,146)
Common stock issued under incentive plans, net of shares surrendered in payment (in shares)			169,656
Common stock issued under incentive plans, net of shares surrendered in payment	(4,178)		$ 170	(4,348)
Common stock issued for acquisitions (in shares)		10,000
Common stock issued for acquisitions	96,388	$ 96,388
Common stock repurchases (in shares)			(2,700,000)
Common stock repurchases	(204,740)		$ (2,700)	(202,040)
Share-based compensation expense	17,300			17,300
Ending balance (in shares) at Sep. 30, 2019		23,750	52,265,887
Ending balance at Sep. 30, 2019	4,283,300	$ 228,485	$ 52,266	2,680,328	1,268,278	53,943
Beginning balance (in shares) at Jun. 30, 2019		23,750	52,805,461
Beginning balance at Jun. 30, 2019	4,238,000	$ 228,485	$ 52,805	2,714,074	1,195,546	47,090
Increase (Decrease) in Shareholders' Equity
Net income	99,850				99,850
Other comprehensive income (loss)	6,853					6,853
Cash dividends declared	(23,519)				(23,519)
Preferred stock dividends	(3,599)				(3,599)
Common stock issued under incentive plans, net of shares surrendered in payment (in shares)			12,656
Common stock issued under incentive plans, net of shares surrendered in payment	270		$ 13	257
Common stock repurchases (in shares)			(552,230)
Common stock repurchases	(40,016)		$ (552)	(39,464)
Share-based compensation expense	5,461			5,461
Ending balance (in shares) at Sep. 30, 2019		23,750	52,265,887
Ending balance at Sep. 30, 2019	$ 4,283,300	$ 228,485	$ 52,266	$ 2,680,328	$ 1,268,278	$ 53,943

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 353,346	$ 294,186
Interest-bearing deposits in other banks	577,587	396,267
Total cash and cash equivalents	930,933	690,453
Securities available for sale, at fair value	4,238,082	4,783,579
Securities held to maturity (fair values of $192,586 and $204,277, respectively)	185,007	207,446
Mortgage loans held for sale, at fair value	255,276	107,734
Loans and leases, net of unearned income	23,676,537	22,519,815
Allowance for loan and lease losses	(146,235)	(140,571)
Loans and leases, net	23,530,302	22,379,244
Premises and equipment, net	298,309	300,507
Goodwill	1,235,533	1,235,533
Other intangible assets	79,143	88,736
Other assets	982,013	1,039,783
Total Assets	31,734,598	30,833,015
Deposits:
Non-interest-bearing	6,518,783	6,542,490
Interest-bearing	18,458,502	17,220,941
Total deposits	24,977,285	23,763,431
Short-term borrowings	498,049	1,482,882
Long-term debt	1,394,202	1,166,151
Other liabilities	581,762	364,274
Total Liabilities	27,451,298	26,776,738
Shareholders’ Equity
Preferred stock, $1 par value - 5,000,000 shares authorized Non-cumulative perpetual, liquidation preference $10,000 per share; 23,750 and 13,750 shares issued and outstanding, respectively, including related surplus	228,485	132,097
Common stock, $1 par value - 100,000,000 shares authorized; 52,265,887 and 54,796,231 shares issued and outstanding, respectively	52,266	54,796
Additional paid-in capital	2,680,328	2,869,416
Retained earnings	1,268,278	1,042,718
Accumulated other comprehensive income (loss)	53,943	(42,750)
Total Shareholders’ Equity	4,283,300	4,056,277
Total Liabilities and Shareholders’ Equity	$ 31,734,598	$ 30,833,015

XML

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Summary of Financial Instruments Outstanding

At September 30, 2019 and December 31, 2018, respectively, the Company had the following financial instruments outstanding and related reserves, whose contract amounts represent credit risk:

(in thousands)	September 30, 2019		December 31, 2018
Commitments to extend credit	$	883,615	$	642,162
Unfunded commitments under lines of credit	7,252,052		6,883,963
Commercial and standby letters of credit	215,664		240,436
Reserve for unfunded lending commitments	16,144		14,830

XML

Derivative Instruments and Other Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Outstanding Derivative Instruments

Information pertaining to outstanding derivative instruments was as follows:

	Derivative Assets - Fair Value				Derivative Liabilities - Fair Value
(in thousands)	September 30, 2019		December 31, 2018		September 30, 2019		December 31, 2018
Derivatives designated as hedging instruments:
Interest rate contracts	$	23,339	$	3,469	$	—	$	—
Total derivatives designated as hedging instruments	$	23,339	$	3,469	$	—	$	—
Derivatives not designated as hedging instruments:
Interest rate contracts:
Customer swaps - upstream	$	12	$	474	$	6,104	$	191
Customer swaps - downstream	104,779		16,946		206		17,812
Foreign exchange contracts	—		18		—		18
Forward sales contracts	485		630		654		750
Written and purchased options	7,549		5,490		3,695		3,310
Other contracts	71		21		192		43
Total derivatives not designated as hedging instruments	$	112,896	$	23,579	$	10,851	$	22,124
Total	$	136,235	$	27,048	$	10,851	$	22,124

	Derivative Assets - Notional Amount				Derivative Liabilities - Notional Amount
(in thousands)	September 30, 2019		December 31, 2018		September 30, 2019		December 31, 2018
Derivatives designated as hedging instruments:
Interest rate contracts	$	800,000	$	408,500	$	108,500	$	—
Total derivatives designated as hedging instruments	$	800,000	$	408,500	$	108,500	$	—
Derivatives not designated as hedging instruments:
Interest rate contracts:
Customer swaps - upstream	$	142,425	$	919,653	$	2,259,248	$	701,257
Customer swaps - downstream	2,259,248		701,257		142,425		919,653
Foreign exchange contracts	—		1,202		—		1,202
Forward sales contracts	144,368		1,140		211,049		143,179
Written and purchased options	339,569		229,333		128,150		140,645
Other contracts	74,085		50,527		145,443		85,623
Total derivatives not designated as hedging instruments	$	2,959,695	$	1,903,112	$	2,886,315	$	1,991,559
Total	$	3,759,695	$	2,311,612	$	2,994,815	$	1,991,559

Offsetting Assets

The following table reconciles the gross amounts presented in the consolidated balance sheets to the net amounts that would result in the event of offset.

	September 30, 2019
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet					Net
(in thousands)			Derivatives			Collateral
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	23,338	$	—		$	—	$	23,338
Interest rate contracts not designated as hedging instruments	104,791		(6,119		)	—		98,672
Written and purchased options	3,581		—			—		3,581
Total derivative assets subject to master netting arrangements	$	131,710	$	(6,119	)	$	—	$	125,591
Derivative liabilities
Interest rate contracts not designated as hedging instruments	$	6,310	$	(6,119	)	$	—	$	191
Written and purchased options	3,581		—			—		3,581
Total derivative liabilities subject to master netting arrangements	$	9,891	$	(6,119	)	$	—	$	3,772

	December 31, 2018
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet					Net
(in thousands)			Derivatives			Collateral
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	3,469	$	—		$	—	$	3,469
Interest rate contracts not designated as hedging instruments	17,420		(619		)	—		16,801
Written and purchased options	3,285		—			—		3,285
Total derivative assets subject to master netting arrangements	$	24,174	$	(619	)	$	—	$	23,555
Derivative liabilities
Interest rate contracts not designated as hedging instruments	$	18,003	$	(619	)	$	—	$	17,384
Written and purchased options	3,285		—			—		3,285
Total derivative liabilities subject to master netting arrangements	$	21,288	$	(619	)	$	—	$	20,669

Offsetting Liabilities

The following table reconciles the gross amounts presented in the consolidated balance sheets to the net amounts that would result in the event of offset.

	September 30, 2019
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet					Net
(in thousands)			Derivatives			Collateral
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	23,338	$	—		$	—	$	23,338
Interest rate contracts not designated as hedging instruments	104,791		(6,119		)	—		98,672
Written and purchased options	3,581		—			—		3,581
Total derivative assets subject to master netting arrangements	$	131,710	$	(6,119	)	$	—	$	125,591
Derivative liabilities
Interest rate contracts not designated as hedging instruments	$	6,310	$	(6,119	)	$	—	$	191
Written and purchased options	3,581		—			—		3,581
Total derivative liabilities subject to master netting arrangements	$	9,891	$	(6,119	)	$	—	$	3,772

	December 31, 2018
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet					Net
(in thousands)			Derivatives			Collateral
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	3,469	$	—		$	—	$	3,469
Interest rate contracts not designated as hedging instruments	17,420		(619		)	—		16,801
Written and purchased options	3,285		—			—		3,285
Total derivative assets subject to master netting arrangements	$	24,174	$	(619	)	$	—	$	23,555
Derivative liabilities
Interest rate contracts not designated as hedging instruments	$	18,003	$	(619	)	$	—	$	17,384
Written and purchased options	3,285		—			—		3,285
Total derivative liabilities subject to master netting arrangements	$	21,288	$	(619	)	$	—	$	20,669

Effect of Derivatives on the Consolidated Financial Statements

At September 30, 2019 and 2018, and for the three and nine months then ended, information pertaining to the effect of the hedging instruments on the consolidated financial statements was as follows:

		Amount of Gain (Loss) Recognized in OCI, net of taxes								Location of Gain (Loss) Reclassified from AOCI into Income	Amount of Gain (Loss) Reclassified from AOCI into Income, net of taxes									Location of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)
		Total			Including Component		Excluding Component				Total			Including Component			Excluding Component				Total		Including Component		Excluding Component
(in thousands)		For the Three Months Ended September 30,
Derivatives in Cash Flow Hedging Relationships		2019									2019										2019
	Interest rate contracts	$	(264	)	$	312	$	(576	)	Interest expense	$	(162	)	$	102		$	(264	)	Interest expense	$	—	$	—	$	—
		2018									2018										2018
	Interest rate contracts	$	818		$	818	$	—		Interest expense	$	(22	)	$	(22	)	$	—		Interest expense	$	—	$	—	$	—

		Amount of Gain (Loss) Recognized in OCI, net of taxes							Location of Gain (Loss) Reclassified from AOCI into Income	Amount of Gain (Loss) Reclassified from AOCI into Income, net of taxes									Location of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)
		Total		Including Component		Excluding Component				Total			Including Component			Excluding Component				Total		Including Component		Excluding Component
(in thousands)		For the Nine Months Ended September 30,
Derivatives in Cash Flow Hedging Relationships		2019								2019										2019
	Interest rate contracts	$	1,992	$	3,196	$	(1,204	)	Interest expense	$	(467	)	$	212		$	(679	)	Interest expense	$	—	$	—	$	—
		2018								2018										2018
	Interest rate contracts	$	4,762	$	4,762	$	—		Interest expense	$	(178	)	$	(178	)	$	—		Interest expense	$	—	$	—	$	—

Information pertaining to the effect of derivatives not designated as hedging instruments on the consolidated financial statements as of September 30, was as follows:

	Location of Gain (Loss) Recognized in Income on Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives
		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(in thousands)		2019			2018			2019			2018
Interest rate contracts (1)	Commission income	$	4,067		$	2,586		$	10,761		$	5,093
Foreign exchange contracts	Other income	8			7			14			17
Forward sales contracts	Mortgage income	(1,765		)	948			(8,085		)	4,563
Written and purchased options	Mortgage income	(1,848		)	(692		)	1,675			473
Other contracts	Other income	(72		)	1			(99		)	(4		)
Total		$	390		$	2,850		$	4,266		$	10,142

^{(1) Includes fees associated with customer interest rate contracts.}

XML

Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Share-based Compensation Arrangements by Share-based Payment Award

The following table represents the activity related to stock options during the periods indicated:

	Number of Shares		Weighted Average Exercise Price
Outstanding options, December 31, 2017	686,366		$	58.24
Granted	97,620		82.02
Exercised	(41,697	)	53.12
Forfeited or expired	(27,328	)	68.19
Outstanding options, September 30, 2018	714,961		$	61.41
Exercisable options, September 30, 2018	500,349		$	56.70
Outstanding options, December 31, 2018	714,420		$	61.41
Granted	127,090		70.34
Exercised	(50,375	)	52.99
Forfeited or expired	(12,227	)	72.79
Outstanding options, September 30, 2019	778,908		$	63.23
Exercisable options, September 30, 2019	533,784		$	58.60

The following table represents unvested restricted stock award and restricted share unit activity for the following periods:

	For the Nine Months Ended September 30,
	2019		2018
Number of shares at beginning of period	700,628		738,187
Granted	217,078		229,181
Forfeited	(18,955	)	(70,981	)
Vested	(248,047	)	(192,217	)
Number of shares at end of period	650,704		704,170

The following table represents phantom stock award activity during the periods indicated:

(in thousands)	Number of share equivalents (1)		Value of share equivalents (2)
Balance, December 31, 2017	393,844		$	30,523
Granted	151,908		12,358
Forfeited share equivalents	(59,550	)	4,844
Vested share equivalents	(130,497	)	10,871
Balance, September 30, 2018	355,705		$	28,937
Balance, December 31, 2018	353,407		$	22,717
Granted	183,879		13,890
Forfeited share equivalents	(30,283	)	2,288
Vested share equivalents	(107,592	)	8,116
Balance, September 30, 2019	399,411		$	30,171

⁽¹⁾  Number of share equivalents includes all reinvested dividend equivalents for the periods indicated.

⁽²⁾ 

Except for share equivalents at the beginning of each period, which are based on the value at that time, and vested share payments, which are based on the cash paid at the time of vesting, the value of share equivalents is calculated based on the market price of the Company’s stock at the end of the respective periods. The market price of the Company’s stock was $75.54 and $81.35 on September 30, 2019, and 2018, respectively.

Schedule of Valuation Assumptions

The following weighted-average assumptions were used for option awards issued during the following periods:

	For the Nine Months Ended September 30,
	2019			2018
Expected dividends	2.3		%	1.8		%
Expected volatility	24.5		%	24.3		%
Risk-free interest rate	2.5		%	2.7		%
Expected term (in years)	5.7			5.8
Weighted-average grant-date fair value	$	14.44		$	18.48

Schedule of Allocation for Share-based Compensation Expense

The following table represents compensation expense recorded for phantom stock based on the number of share equivalents vested at September 30 of the periods indicated and the current market price of the Company’s stock at that time:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to phantom stock	$	2,257	$	2,375	$	7,902	$	7,388

The following table represents the compensation expense that is included in non-interest expense and related income tax benefits in the accompanying consolidated statements of comprehensive income related to stock options for the following periods:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to stock options	$	373	$	321	$	1,058	$	952
Income tax benefit related to stock options	28		23		78		70

The following table represents the compensation expense that was included in non-interest expense and related income tax benefits in the accompanying consolidated statements of comprehensive income related to restricted stock awards and restricted share units for the periods indicated:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to restricted stock awards and restricted share units	$	5,088	$	4,843	$	16,242	$	14,192
Income tax benefit related to restricted stock awards and restricted share units	1,068		1,017		3,411		2,980

XML

Leases

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Leases

LEASES

IBERIABANK as Lessee

The Company leases certain branch and corporate offices, land and ATM facilities through operating leases with terms ranging from less than one year to 44 years. The Company has no financing leases (formerly capital leases). As discussed in Note 2, Recent Accounting Pronouncements, the Company adopted new guidance for leases on January 1, 2019 which requires leases, whether classified as operating leases or financing leases, to be accounted for as the acquisition of a right-of-use asset (ROU asset) and a related lease liability recorded at the present value of the lease payments less any lease incentives. The ROU asset represents the Company’s right to use an underlying asset for the lease term and is included in other assets on the Company’s consolidated balance sheets. The lease liability represents the Company’s obligation to make lease payments and is included in other liabilities in the Company’s consolidated balance sheets. The cost of the lease is recognized on a straight-line basis over the lease term as lease expense. Prior to January 1, 2019, operating leases were not recorded on the balance sheet. See Note 2, Recent Accounting Pronouncements, for further discussion of the adoption on this new guidance.

Subsequent to the adoption of ASC 842 on January 1, 2019, the Company reviews new lease and service contracts to determine if the contracts contain an embedded lease. For leases that do not provide an implicit rate, the Company uses the corresponding FHLB Advance rate based on the lease term at commencement in determining the present value of lease payments. For leases with variable lease payments, the present value is determined using the index at the lease commencement date. Changes in variable rent payments due to subsequent changes in the index or rate do not result in a re-measurement of the ROU asset or lease liability, but are recognized as expense in the period in which they occur. Certain of the Company’s leases contain options to either renew, extend or terminate the lease. During the third quarter of 2019, the exercise of existing renewal options became reasonably certain for several of the Company’s leases with current noncancelable terms ending in 2020. These renewal options have varying term lengths ranging from 1 to 5 years, and the payments associated with the renewal options were included in the measurement of the lease liability and ROU asset as of September 30, 2019. The Company also has lease agreements with lease and non-lease components, which are generally accounted for separately. Non-lease components, which primarily consist of common area maintenance, utilities, and janitorial services, are based on the stand-alone price of the services and expensed as incurred.

Operating lease expense for the three and nine months ended September 30, 2019 totaled $6.9 million and $20.5 million, respectively. During the three and nine months ended September 30, 2019, the Company paid $6.7 million and $21.1 million, respectively, for amounts included in the measurement of lease liabilities and $18.1 million and $31.3 million, respectively, to obtain ROU assets.

The following summarizes the ROU asset and lease liabilities as of September 30, 2019:

(in thousands)	September 30, 2019
Right-of-use assets	$	112,156
Lease liabilities	131,800
Weighted average remaining lease term	7.95
Weighted average discount rate	3.14		%

Maturities of operating lease liabilities as of September 30, 2019 were as follows:

(in thousands)
2019	$	6,732
2020	25,895
2021	23,847
2022	21,414
2023	16,659
2024 and thereafter	55,296
Total operating lease payments	$	149,843
Less: Imputed interest	18,043
Total lease liabilities	$	131,800

As of September 30, 2019, the Company had not entered into any material leases that had not yet commenced.

IBERIABANK as Lessor

As a lessor, the Company engages in the leasing of equipment to commercial customers primarily through direct financing and sales-type leases. Direct financing and sales-type leases are similar to other forms of installment lending in that lessors generally do not retain benefits and risks incidental to ownership of the property subject to leases. Such arrangements are essentially financing transactions that permit lessees to acquire and use property. The new guidance on leases discussed above did not have a significant impact on the lessor model of accounting. As lessor, the sum of all minimum lease payments over the lease term and the estimated residual value, less unearned interest income, is recorded as the net investment in the lease on the commencement date and is included in loans and leases, net of unearned income in the consolidated balance sheets. Interest income is accrued as earned over the term of the lease based on the net investment in leases. Fees incurred to originate the lease are deferred on the commencement date and recognized as an adjustment of the yield on the lease.

The Company’s portfolio of direct financing and sales-type leases contains terms of 3 to 20 years. Some of these leases contain options to extend the leases for up to 12 months and/or to terminate the lease within one year. These direct financing and sales-type leases typically include a payment structure set at lease inception and do not provide any additional services. Expenses associated with the leased equipment, such as maintenance and insurance, are paid by the lessee directly to third parties. The lease agreement typically contains an option for the purchase of the leased property by the lessee at the end of the lease term at either the property’s residual value or a specified price. In all cases, the Company expects to sell or re-lease the equipment at the end of the lease term. Due to the nature and structure of the Company’s direct financing and sales-type leases, there is no selling profit or loss on these transactions.

At a lease’s inception, the Company determines the expected residual value of the leased property at the end of the lease term based on the type of equipment leased, location and usage, as well as the contractual return provisions in the lease agreement. Additionally, the Company utilizes multiple market sources of data to establish equipment values and in many cases engages certified appraisers to provide valuation analyses. In order to manage the risk associated with the residual value of its leased assets, lease agreements typically include various provisions designed to protect the value of the leased property, such as contractual equipment maintenance, use and return provisions, remarketing agreements, and lessee guarantees. In a few cases, the Company also obtains third-party guarantees to further manage residual risk in the portfolio. On an annual basis, leased properties with material residual values are reviewed for impairment.

The components of the Company’s net investment in leases were as follows:

(in thousands)	September 30, 2019
Lease payment receivable	$	363,224
Unguaranteed residual assets	34,991
Total net investment in leases	$	398,215

For the three and nine months ended September 30, 2019, interest income for direct financing or sales-type leases totaled $3.1 million and $7.4 million. During the three and nine months ended September 30, 2019, there was no profit or loss recognized at the commencement date for direct financing or sales-type leases.

Maturities of the Company's lease receivables as of September 30, 2019 were as follows:

(in thousands)
2019	$	21,480
2020	82,993
2021	68,163
2022	62,809
2023	48,670
2024 and thereafter	90,277
Total future minimum lease payments	$	374,392
Less: Imputed interest	11,168
Lease receivables	$	363,224

Leases

LEASES

IBERIABANK as Lessee

The Company leases certain branch and corporate offices, land and ATM facilities through operating leases with terms ranging from less than one year to 44 years. The Company has no financing leases (formerly capital leases). As discussed in Note 2, Recent Accounting Pronouncements, the Company adopted new guidance for leases on January 1, 2019 which requires leases, whether classified as operating leases or financing leases, to be accounted for as the acquisition of a right-of-use asset (ROU asset) and a related lease liability recorded at the present value of the lease payments less any lease incentives. The ROU asset represents the Company’s right to use an underlying asset for the lease term and is included in other assets on the Company’s consolidated balance sheets. The lease liability represents the Company’s obligation to make lease payments and is included in other liabilities in the Company’s consolidated balance sheets. The cost of the lease is recognized on a straight-line basis over the lease term as lease expense. Prior to January 1, 2019, operating leases were not recorded on the balance sheet. See Note 2, Recent Accounting Pronouncements, for further discussion of the adoption on this new guidance.

Subsequent to the adoption of ASC 842 on January 1, 2019, the Company reviews new lease and service contracts to determine if the contracts contain an embedded lease. For leases that do not provide an implicit rate, the Company uses the corresponding FHLB Advance rate based on the lease term at commencement in determining the present value of lease payments. For leases with variable lease payments, the present value is determined using the index at the lease commencement date. Changes in variable rent payments due to subsequent changes in the index or rate do not result in a re-measurement of the ROU asset or lease liability, but are recognized as expense in the period in which they occur. Certain of the Company’s leases contain options to either renew, extend or terminate the lease. During the third quarter of 2019, the exercise of existing renewal options became reasonably certain for several of the Company’s leases with current noncancelable terms ending in 2020. These renewal options have varying term lengths ranging from 1 to 5 years, and the payments associated with the renewal options were included in the measurement of the lease liability and ROU asset as of September 30, 2019. The Company also has lease agreements with lease and non-lease components, which are generally accounted for separately. Non-lease components, which primarily consist of common area maintenance, utilities, and janitorial services, are based on the stand-alone price of the services and expensed as incurred.

Operating lease expense for the three and nine months ended September 30, 2019 totaled $6.9 million and $20.5 million, respectively. During the three and nine months ended September 30, 2019, the Company paid $6.7 million and $21.1 million, respectively, for amounts included in the measurement of lease liabilities and $18.1 million and $31.3 million, respectively, to obtain ROU assets.

The following summarizes the ROU asset and lease liabilities as of September 30, 2019:

(in thousands)	September 30, 2019
Right-of-use assets	$	112,156
Lease liabilities	131,800
Weighted average remaining lease term	7.95
Weighted average discount rate	3.14		%

Maturities of operating lease liabilities as of September 30, 2019 were as follows:

(in thousands)
2019	$	6,732
2020	25,895
2021	23,847
2022	21,414
2023	16,659
2024 and thereafter	55,296
Total operating lease payments	$	149,843
Less: Imputed interest	18,043
Total lease liabilities	$	131,800

As of September 30, 2019, the Company had not entered into any material leases that had not yet commenced.

IBERIABANK as Lessor

As a lessor, the Company engages in the leasing of equipment to commercial customers primarily through direct financing and sales-type leases. Direct financing and sales-type leases are similar to other forms of installment lending in that lessors generally do not retain benefits and risks incidental to ownership of the property subject to leases. Such arrangements are essentially financing transactions that permit lessees to acquire and use property. The new guidance on leases discussed above did not have a significant impact on the lessor model of accounting. As lessor, the sum of all minimum lease payments over the lease term and the estimated residual value, less unearned interest income, is recorded as the net investment in the lease on the commencement date and is included in loans and leases, net of unearned income in the consolidated balance sheets. Interest income is accrued as earned over the term of the lease based on the net investment in leases. Fees incurred to originate the lease are deferred on the commencement date and recognized as an adjustment of the yield on the lease.

The Company’s portfolio of direct financing and sales-type leases contains terms of 3 to 20 years. Some of these leases contain options to extend the leases for up to 12 months and/or to terminate the lease within one year. These direct financing and sales-type leases typically include a payment structure set at lease inception and do not provide any additional services. Expenses associated with the leased equipment, such as maintenance and insurance, are paid by the lessee directly to third parties. The lease agreement typically contains an option for the purchase of the leased property by the lessee at the end of the lease term at either the property’s residual value or a specified price. In all cases, the Company expects to sell or re-lease the equipment at the end of the lease term. Due to the nature and structure of the Company’s direct financing and sales-type leases, there is no selling profit or loss on these transactions.

At a lease’s inception, the Company determines the expected residual value of the leased property at the end of the lease term based on the type of equipment leased, location and usage, as well as the contractual return provisions in the lease agreement. Additionally, the Company utilizes multiple market sources of data to establish equipment values and in many cases engages certified appraisers to provide valuation analyses. In order to manage the risk associated with the residual value of its leased assets, lease agreements typically include various provisions designed to protect the value of the leased property, such as contractual equipment maintenance, use and return provisions, remarketing agreements, and lessee guarantees. In a few cases, the Company also obtains third-party guarantees to further manage residual risk in the portfolio. On an annual basis, leased properties with material residual values are reviewed for impairment.

The components of the Company’s net investment in leases were as follows:

(in thousands)	September 30, 2019
Lease payment receivable	$	363,224
Unguaranteed residual assets	34,991
Total net investment in leases	$	398,215

For the three and nine months ended September 30, 2019, interest income for direct financing or sales-type leases totaled $3.1 million and $7.4 million. During the three and nine months ended September 30, 2019, there was no profit or loss recognized at the commencement date for direct financing or sales-type leases.

Maturities of the Company's lease receivables as of September 30, 2019 were as follows:

(in thousands)
2019	$	21,480
2020	82,993
2021	68,163
2022	62,809
2023	48,670
2024 and thereafter	90,277
Total future minimum lease payments	$	374,392
Less: Imputed interest	11,168
Lease receivables	$	363,224

Leases

LEASES

IBERIABANK as Lessee

The Company leases certain branch and corporate offices, land and ATM facilities through operating leases with terms ranging from less than one year to 44 years. The Company has no financing leases (formerly capital leases). As discussed in Note 2, Recent Accounting Pronouncements, the Company adopted new guidance for leases on January 1, 2019 which requires leases, whether classified as operating leases or financing leases, to be accounted for as the acquisition of a right-of-use asset (ROU asset) and a related lease liability recorded at the present value of the lease payments less any lease incentives. The ROU asset represents the Company’s right to use an underlying asset for the lease term and is included in other assets on the Company’s consolidated balance sheets. The lease liability represents the Company’s obligation to make lease payments and is included in other liabilities in the Company’s consolidated balance sheets. The cost of the lease is recognized on a straight-line basis over the lease term as lease expense. Prior to January 1, 2019, operating leases were not recorded on the balance sheet. See Note 2, Recent Accounting Pronouncements, for further discussion of the adoption on this new guidance.

Subsequent to the adoption of ASC 842 on January 1, 2019, the Company reviews new lease and service contracts to determine if the contracts contain an embedded lease. For leases that do not provide an implicit rate, the Company uses the corresponding FHLB Advance rate based on the lease term at commencement in determining the present value of lease payments. For leases with variable lease payments, the present value is determined using the index at the lease commencement date. Changes in variable rent payments due to subsequent changes in the index or rate do not result in a re-measurement of the ROU asset or lease liability, but are recognized as expense in the period in which they occur. Certain of the Company’s leases contain options to either renew, extend or terminate the lease. During the third quarter of 2019, the exercise of existing renewal options became reasonably certain for several of the Company’s leases with current noncancelable terms ending in 2020. These renewal options have varying term lengths ranging from 1 to 5 years, and the payments associated with the renewal options were included in the measurement of the lease liability and ROU asset as of September 30, 2019. The Company also has lease agreements with lease and non-lease components, which are generally accounted for separately. Non-lease components, which primarily consist of common area maintenance, utilities, and janitorial services, are based on the stand-alone price of the services and expensed as incurred.

Operating lease expense for the three and nine months ended September 30, 2019 totaled $6.9 million and $20.5 million, respectively. During the three and nine months ended September 30, 2019, the Company paid $6.7 million and $21.1 million, respectively, for amounts included in the measurement of lease liabilities and $18.1 million and $31.3 million, respectively, to obtain ROU assets.

The following summarizes the ROU asset and lease liabilities as of September 30, 2019:

(in thousands)	September 30, 2019
Right-of-use assets	$	112,156
Lease liabilities	131,800
Weighted average remaining lease term	7.95
Weighted average discount rate	3.14		%

Maturities of operating lease liabilities as of September 30, 2019 were as follows:

(in thousands)
2019	$	6,732
2020	25,895
2021	23,847
2022	21,414
2023	16,659
2024 and thereafter	55,296
Total operating lease payments	$	149,843
Less: Imputed interest	18,043
Total lease liabilities	$	131,800

As of September 30, 2019, the Company had not entered into any material leases that had not yet commenced.

IBERIABANK as Lessor

As a lessor, the Company engages in the leasing of equipment to commercial customers primarily through direct financing and sales-type leases. Direct financing and sales-type leases are similar to other forms of installment lending in that lessors generally do not retain benefits and risks incidental to ownership of the property subject to leases. Such arrangements are essentially financing transactions that permit lessees to acquire and use property. The new guidance on leases discussed above did not have a significant impact on the lessor model of accounting. As lessor, the sum of all minimum lease payments over the lease term and the estimated residual value, less unearned interest income, is recorded as the net investment in the lease on the commencement date and is included in loans and leases, net of unearned income in the consolidated balance sheets. Interest income is accrued as earned over the term of the lease based on the net investment in leases. Fees incurred to originate the lease are deferred on the commencement date and recognized as an adjustment of the yield on the lease.

The Company’s portfolio of direct financing and sales-type leases contains terms of 3 to 20 years. Some of these leases contain options to extend the leases for up to 12 months and/or to terminate the lease within one year. These direct financing and sales-type leases typically include a payment structure set at lease inception and do not provide any additional services. Expenses associated with the leased equipment, such as maintenance and insurance, are paid by the lessee directly to third parties. The lease agreement typically contains an option for the purchase of the leased property by the lessee at the end of the lease term at either the property’s residual value or a specified price. In all cases, the Company expects to sell or re-lease the equipment at the end of the lease term. Due to the nature and structure of the Company’s direct financing and sales-type leases, there is no selling profit or loss on these transactions.

At a lease’s inception, the Company determines the expected residual value of the leased property at the end of the lease term based on the type of equipment leased, location and usage, as well as the contractual return provisions in the lease agreement. Additionally, the Company utilizes multiple market sources of data to establish equipment values and in many cases engages certified appraisers to provide valuation analyses. In order to manage the risk associated with the residual value of its leased assets, lease agreements typically include various provisions designed to protect the value of the leased property, such as contractual equipment maintenance, use and return provisions, remarketing agreements, and lessee guarantees. In a few cases, the Company also obtains third-party guarantees to further manage residual risk in the portfolio. On an annual basis, leased properties with material residual values are reviewed for impairment.

The components of the Company’s net investment in leases were as follows:

(in thousands)	September 30, 2019
Lease payment receivable	$	363,224
Unguaranteed residual assets	34,991
Total net investment in leases	$	398,215

For the three and nine months ended September 30, 2019, interest income for direct financing or sales-type leases totaled $3.1 million and $7.4 million. During the three and nine months ended September 30, 2019, there was no profit or loss recognized at the commencement date for direct financing or sales-type leases.

Maturities of the Company's lease receivables as of September 30, 2019 were as follows:

(in thousands)
2019	$	21,480
2020	82,993
2021	68,163
2022	62,809
2023	48,670
2024 and thereafter	90,277
Total future minimum lease payments	$	374,392
Less: Imputed interest	11,168
Lease receivables	$	363,224

XML

Loans and Leases

9 Months Ended

Sep. 30, 2019

Receivables [Abstract]

Loans and Leases

LOANS AND LEASES

Loans and leases by portfolio segment and class consisted of the following for the periods indicated:

(in thousands)	September 30, 2019		December 31, 2018
Commercial loans and leases:
Real estate - construction	$	1,330,014	$	1,196,366
Real estate - owner-occupied	2,468,061		2,395,822
Real estate - non-owner-occupied	6,011,681		5,796,117
Commercial and industrial (1)	6,490,125		5,737,017
Total commercial loans and leases	16,299,881		15,125,322
Residential mortgage loans	4,649,745		4,359,156
Consumer and other loans:
Home equity	2,053,588		2,304,694
Other	673,323		730,643
Total consumer and other loans	2,726,911		3,035,337
Total loans and leases	$	23,676,537	$	22,519,815

⁽¹⁾  Includes equipment financing leases

Net deferred loan origination fees were $37.8 million and $30.2 million at September 30, 2019 and December 31, 2018, respectively. Total net discount on the Company's loans was $97.8 million and $136.8 million at September 30, 2019 and December 31, 2018, respectively, of which $61.8 million and $81.6 million was related to non-impaired loans.

In addition to loans issued in the normal course of business, the Company considers overdrafts on customer deposit accounts to be loans and reclassifies these overdrafts as loans in its consolidated balance sheets. At September 30, 2019 and December 31, 2018, overdrafts of $7.0 million and $9.2 million, respectively, had been reclassified to loans.

Loans with carrying values of $8.5 billion and $7.6 billion were pledged as collateral for borrowings at September 30, 2019 and December 31, 2018, respectively.

Aging Analysis

The following tables provide an analysis of the aging of loans and leases as of September 30, 2019 and December 31, 2018. Past due and non-accrual loan amounts exclude acquired impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans. For additional information on the determination of past due status and the Company's policies for recording payments received, placing loans and leases on non-accrual status, and the resumption of interest accrual on non-accruing loans and leases, see Note 1, Summary of Significant Accounting Policies, in the 2018 10-K.

	September 30, 2019
	Accruing
(in thousands)	Current or Less Than 30 days Past Due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual (1)		Acquired Impaired		Total
Real estate- construction	$	1,307,793	$	3,851	$	—	$	—	$	3,851	$	1,381	$	16,989	$	1,330,014
Real estate- owner-occupied	2,389,631		2,294		1,031		—		3,325		17,158		57,947		2,468,061
Real estate- non-owner-occupied	5,930,480		2,093		2,672		426		5,191		20,201		55,809		6,011,681
Commercial and industrial	6,417,203		3,614		1,769		2,696		8,079		43,494		21,349		6,490,125
Residential mortgage	4,502,109		1,252		13,463		1,668		16,383		50,439		80,814		4,649,745
Consumer - home equity	1,967,342		10,448		6,792		—		17,240		18,311		50,695		2,053,588
Consumer - other	663,561		2,839		2,500		—		5,339		2,129		2,294		673,323
Total	$	23,178,119	$	26,391	$	28,227	$	4,790	$	59,408	$	153,113	$	285,897	$	23,676,537

⁽¹⁾  Of the total non-accrual loans at September 30, 2019, $10.7 million were past due 30-59 days, $4.5 million were past due 60-89 days, and $73.4 million were past due more than 90 days.

	December 31, 2018
	Accruing
(in thousands)	Current or Less Than 30 days Past Due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual (1)		Acquired Impaired		Total
Real estate- construction	$	1,167,795	$	1,054	$	—	$	—	$	1,054	$	1,094	$	26,423	$	1,196,366
Real estate- owner-occupied	2,305,743		7,167		—		—		7,167		10,260		72,652		2,395,822
Real estate- non-owner-occupied	5,703,131		7,473		360		—		7,833		15,898		69,255		5,796,117
Commercial and industrial	5,645,304		5,139		1,320		553		7,012		57,860		26,841		5,737,017
Residential mortgage	4,218,146		2,768		13,063		1,575		17,406		30,396		93,208		4,359,156
Consumer - home equity	2,200,517		10,283		2,409		—		12,692		18,830		72,655		2,304,694
Consumer - other	719,122		4,695		1,601		—		6,296		2,846		2,379		730,643
Total	$	21,959,758	$	38,579	$	18,753	$	2,128	$	59,460	$	137,184	$	363,413	$	22,519,815

⁽¹⁾  Of the total non-accrual loans at December 31, 2018, $7.0 million were past due 30-59 days, $3.7 million were past due 60-89 days, and $66.9 million were past due more than 90 days.

Acquired Loans

The Company acquired certain loans from Sabadell United to customers with addresses outside of the United States. Foreign loans, denominated in U.S. dollars, totaled $194.6 million and $202.6 million at September 30, 2019 and December 31, 2018, respectively.

The following is a summary of changes in the accretable difference for all loans accounted for under ASC 310-30 during the nine months ended September 30:

(in thousands)	2019			2018
Balance at beginning of period	$	133,342		$	152,623
Additions	—			2,371
Transfers from non-accretable difference to accretable yield	(1,740		)	(4		)
Accretion	(29,506		)	(37,115		)
Changes in expected cash flows not affecting non-accretable differences (1)	(2,927		)	21,092
Balance at end of period	$	99,169		$	138,967

⁽¹⁾  Includes changes in cash flows expected to be collected due to the impact of changes in actual or expected timing of liquidation events, modifications, changes in interest rates and changes in prepayment assumptions.

Troubled Debt Restructurings

Information about the Company’s TDRs at September 30, 2019 and 2018 is presented in the following tables. Modifications of loans that are accounted for within a pool under ASC Topic 310-30 are excluded as TDRs. Accordingly, such modifications do not result in the removal of those loans from the pool, even if the modification of those loans would otherwise be considered a TDR. As a result, all such acquired loans that would otherwise meet the criteria for classification as a TDR are excluded from the tables below.

TDRs totaling $61.0 million and $46.0 million occurred during the nine months ended September 30, 2019 and 2018, respectively, through modification of the original loan terms.

The following table provides information on how the TDRs were modified during the periods indicated:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Extended maturities	$	2,476	$	3,658	$	13,097	$	10,020
Maturity and interest rate adjustment	288		267		715		368
Movement to or extension of interest-rate only payments	48		—		1,827		48
Interest rate adjustment	—		—		71		101
Forbearance	22,202		802		25,068		14,386
Other concession(s) (1)	3,724		1,810		20,250		21,031
Total	$	28,738	$	6,537	$	61,028	$	45,954

⁽¹⁾  Other concessions may include covenant waivers, forgiveness of principal or interest associated with a customer bankruptcy, or a combination of any of the above concessions.

Of the $61.0 million of TDRs occurring during the nine months ended September 30, 2019, $25.5 million were on accrual status and $35.5 million were on non-accrual status. Of the $46.0 million of TDRs occurring during the nine months ended September 30 2018, $20.2 million were on accrual status and $25.8 million were on non-accrual status. The following table presents the end of period balance for loans modified in a TDR during the periods indicated:

	Three Months Ended September 30,
	2019					2018
(in thousands, except number of loans)	Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of Loans	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Real estate- construction	1	$	6,331	$	7,602	—	$	—	$	—
Real estate- owner-occupied	7	8,936		8,691		1	2,312		2,312
Real estate- non-owner-occupied	6	1,553		1,210		6	1,818		1,790
Commercial and industrial	14	1,954		1,952		9	829		804
Residential mortgage	10	7,210		6,870		3	257		255
Consumer - home equity	19	2,375		2,237		15	1,152		1,124
Consumer - other	17	202		176		11	352		252
Total	74	$	28,561	$	28,738	45	$	6,720	$	6,537

	Nine Months Ended September 30,
	2019					2018
(in thousands, except number of loans)	Number of Loans	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment		Number of Loans	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment
Real estate- construction	1	$	6,331	$	7,602	1	$	1,950	$	976
Real estate- owner-occupied	11	10,153		9,869		8	15,233		13,373
Real estate- non-owner-occupied	16	7,931		7,233		13	3,228		3,064
Commercial and industrial	48	29,156		19,594		32	32,827		22,769
Residential mortgage	28	8,897		8,524		9	898		837
Consumer - home equity	69	7,629		7,268		47	4,130		4,047
Consumer - other	63	1,065		938		53	1,056		888
Total	236	$	71,162	$	61,028	163	$	59,322	$	45,954

Information detailing TDRs that defaulted during the three-month and nine-month periods ended September 30, 2019 and 2018, and were modified in the previous twelve months (i.e., the twelve months prior to the default) is presented in the following tables. The Company has defined a default as any loan with a payment that is currently past due greater than 30 days, or was past due greater than 30 days at any point during the respective periods, or since the date of modification, whichever is shorter.

	Three Months Ended September 30,
	2019			2018
(in thousands, except number of loans)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Real estate- owner-occupied	—	$	—	1	$	929
Real estate- non-owner-occupied	2	2,460		1	7
Commercial and industrial	8	1,429		2	127
Residential mortgage	1	101		—	—
Consumer - home equity	1	64		4	380
Consumer - other	5	57		6	86
Total	17	$	4,111	14	$	1,529

	Nine Months Ended September 30,
	2019			2018
(in thousands, except number of loans)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Real estate- owner-occupied	6	$	1,225	6	$	10,101
Real estate- non-owner-occupied	16	5,176		6	1,084
Commercial and industrial	25	6,859		12	3,632
Residential mortgage	18	1,394		8	912
Consumer - home equity	21	1,873		17	1,978
Consumer - other	38	557		39	488
Total	124	$	17,084	88	$	18,195

XML

Earnings Per Share - Schedule of Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Common Share - Basic:
Net income	$ 99,850	$ 101,465	$ 301,579	$ 240,210
Less: Preferred stock dividends	3,599	3,599	8,146	8,146
Less: Dividends and undistributed earnings allocated to unvested restricted shares	874	908	2,806	2,341
Earnings allocated to common shareholders - basic	$ 95,377	$ 96,958	$ 290,627	$ 229,723
Weighted average common shares outstanding	51,984	55,571	53,160	55,047
Earnings per common share - basic (in usd per share)	$ 1.83	$ 1.74	$ 5.47	$ 4.17
Earnings Per Common Share - Diluted:
Earnings allocated to common shareholders - basic	$ 95,377	$ 96,958	$ 290,627	$ 229,723
Adjustment for undistributed earnings allocated to unvested restricted shares	(17)	(25)	(37)	(49)
Earnings allocated to common shareholders - diluted	$ 95,360	$ 96,933	$ 290,590	$ 229,674
Weighted average common shares outstanding	51,984	55,571	53,160	55,047
Dilutive potential common shares	308	374	333	360
Weighted average common shares outstanding - diluted	52,292	55,945	53,493	55,407
Earnings per common share - diluted (in usd per share)	$ 1.82	$ 1.73	$ 5.43	$ 4.14

XML

Fair Value Measurements - Summary of Difference Between the Aggregate Fair Value and the Aggregate Unpaid Principal Balance for Mortgage Loans Held for Sale and Mortgage Loans Held for Investment (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Mortgage loans held for sale, at fair value
Aggregate Fair Value	$ 255,276	$ 107,734
Aggregate Unpaid Principal	248,256	104,345
Aggregate Fair Value Less Unpaid Principal	7,020	3,389
Mortgage loans held for investment, at fair value
Aggregate Fair Value	4,138	3,143
Aggregate Unpaid Principal	4,306	3,595
Aggregate Fair Value Less Unpaid Principal	$ (168)	$ (452)

XML

Business Segments - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information
Interest and dividend income	$ 333,178	$ 317,067	$ 995,229	$ 891,433
Interest expense	83,845	57,842	240,073	143,206
Net interest income	249,333	259,225	755,156	748,227
Provision for/(reversal of) loan losses	8,986	11,384	33,504	27,290
Other non-interest income (expense)	39,072	34,078	107,993	97,395
Allocated expenses (income)	0	0	0	0
Non-interest expense	172,662	169,062	501,033	553,910
Income before income tax expense	131,359	131,866	395,627	318,620
Income tax expense	31,509	30,401	94,048	78,410
Net income	99,850	101,465	301,579	240,210
Total loans, leases, and loans held for sale, net of unearned income	23,931,813	22,386,882	23,931,813	22,386,882
Total assets	31,734,598	30,118,387	31,734,598	30,118,387	$ 30,833,015
Total deposits	24,977,285	23,193,446	24,977,285	23,193,446	$ 23,763,431
Average assets	31,554,291	30,046,231	31,222,511	29,323,445
Operating Segments | IBERIABANK
Segment Reporting Information
Interest and dividend income	330,896	315,467	989,595	886,629
Interest expense	83,845	57,842	240,073	143,206
Net interest income	247,051	257,625	749,522	743,423
Provision for/(reversal of) loan losses	8,974	11,386	33,539	27,316
Other non-interest income (expense)	35,881	33,594	104,840	96,981
Allocated expenses (income)	(4,068)	(3,691)	(10,515)	(9,043)
Non-interest expense	152,988	154,000	447,882	505,423
Income before income tax expense	125,038	129,524	383,456	316,708
Income tax expense	29,938	29,765	91,047	78,516
Net income	95,100	99,759	292,409	238,192
Total loans, leases, and loans held for sale, net of unearned income	23,650,057	22,302,679	23,650,057	22,302,679
Total assets	31,386,350	29,974,065	31,386,350	29,974,065
Total deposits	24,946,708	23,179,549	24,946,708	23,179,549
Average assets	31,256,216	29,863,742	30,981,906	29,136,369
Operating Segments | IMC
Segment Reporting Information
Interest and dividend income	2,282	1,599	5,633	4,802
Interest expense	0	0	0	0
Net interest income	2,282	1,599	5,633	4,802
Provision for/(reversal of) loan losses	12	(2)	(35)	(26)
Other non-interest income (expense)	3,194	(16)	3,172	(83)
Allocated expenses (income)	2,991	2,680	7,741	6,714
Non-interest expense	14,676	10,223	38,807	34,105
Income before income tax expense	5,229	1,411	10,017	(29)
Income tax expense	1,282	386	2,425	(7)
Net income	3,947	1,025	7,592	(22)
Total loans, leases, and loans held for sale, net of unearned income	281,756	84,203	281,756	84,203
Total assets	320,994	119,322	320,994	119,322
Total deposits	30,577	13,897	30,577	13,897
Average assets	271,817	158,464	215,306	164,039
Operating Segments | LTC
Segment Reporting Information
Interest and dividend income	0	1	1	2
Interest expense	0	0	0	0
Net interest income	0	1	1	2
Provision for/(reversal of) loan losses	0	0	0	0
Other non-interest income (expense)	(3)	500	(19)	497
Allocated expenses (income)	1,077	1,011	2,774	2,329
Non-interest expense	4,998	4,839	14,344	14,382
Income before income tax expense	1,092	931	2,154	1,941
Income tax expense	289	250	576	(99)
Net income	803	681	1,578	2,040
Total loans, leases, and loans held for sale, net of unearned income	0	0	0	0
Total assets	27,254	25,000	27,254	25,000
Total deposits	0	0	0	0
Average assets	26,258	24,025	25,299	23,037
Mortgage income
Segment Reporting Information
Non-interest income	17,432	12,729	47,725	36,045
Mortgage income | Operating Segments | IBERIABANK
Segment Reporting Information
Non-interest income	0	0	0	0
Mortgage income | Operating Segments | IMC
Segment Reporting Information
Non-interest income	17,432	12,729	47,725	36,045
Mortgage income | Operating Segments | LTC
Segment Reporting Information
Non-interest income	0	0	0	0
Title revenue
Segment Reporting Information
Non-interest income	7,170	6,280	19,290	18,153
Title revenue | Operating Segments | IBERIABANK
Segment Reporting Information
Non-interest income	0	0	0	0
Title revenue | Operating Segments | IMC
Segment Reporting Information
Non-interest income	0	0	0	0
Title revenue | Operating Segments | LTC
Segment Reporting Information
Non-interest income	$ 7,170	$ 6,280	$ 19,290	$ 18,153

XML

Share-Based Compensation - Estimate Fair Value of Stock Option Awards with Weighted-Average Assumptions (Detail) - Stock Option Awards - $ / shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividends	2.30%	1.80%
Expected volatility	24.50%	24.30%
Risk-free interest rate	2.50%	2.70%
Expected term (in years)	5 years 8 months 12 days	5 years 9 months 18 days
Weighted-average grant-date fair value	$ 14.44	$ 18.48

XML

Allowance for Credit Losses and Credit Quality - Schedule of Allowance for Loan Losses for Covered and Non-Covered Loan Portfolios (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Allowance for credit losses
Allowance for loan and lease losses at beginning of period	$ 140,571	$ 140,891
Provision for loan and lease losses	32,190	26,678
Transfer of balance to OREO and other	(2,696)	(5,709)
Charge-offs	(29,971)	(34,740)
Recoveries	6,141	9,830
Allowance for loan and lease losses at end of period	146,235	136,950
Reserve For Unfunded Commitments
Reserve for unfunded commitments at beginning of period	14,830	13,208
Balance created in acquisition accounting	0	900
Provision for unfunded lending commitments	1,314	613
Reserve for unfunded commitments at end of period	16,144	14,721
Allowance for credit losses at end of period	$ 162,379	$ 151,671

XML

Loans and Leases - Schedule of Carrying Amount of Loans Acquired (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable
Expected losses and foregone interest	$ (162,379)		$ (151,671)
Loans acquired with no evidence of deteriorated credit quality	4,138	$ 3,143
Related allowance	$ (14,015)	$ (16,342)

XML

Goodwill and Other Intangible Assets - Schedule of Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Goodwill
Balance at beginning of the period	$ 1,235,533	$ 1,188,902
Goodwill acquired and adjustments during the year	0	46,631
Balance at end of the period	1,235,533	1,235,533
Operating Segments | IBERIABANK
Goodwill
Balance at beginning of the period	1,203,810	1,160,559
Goodwill acquired and adjustments during the year	0	43,251
Balance at end of the period	1,203,810	1,203,810
Operating Segments | IMC
Goodwill
Balance at beginning of the period	23,178	23,178
Goodwill acquired and adjustments during the year	0	0
Balance at end of the period	23,178	23,178
Operating Segments | LTC
Goodwill
Balance at beginning of the period	8,545	5,165
Goodwill acquired and adjustments during the year	0	3,380
Balance at end of the period	$ 8,545	$ 8,545

XML

Investment Securities - Additional Information on Securities in a Continuous Loss Position (Detail) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019 USD ($) Security	Dec. 31, 2018 USD ($) Security
Schedule of Available-for-sale Securities
Number of debt securities with unrealized losses | Security	107	488
Debt securities with unrealized losses (percentage of amortized cost)	0.55%	2.38%
Number of securities | Security	76	441
Amortized cost basis	$ 327,233	$ 2,985,374
Unrealized loss	$ 2,490	$ 75,925
Mortgage-backed securities: Residential agency
Schedule of Available-for-sale Securities
Number of securities | Security	66	302
Amortized cost basis	$ 311,242	$ 2,268,608
Unrealized loss	$ 2,295	$ 57,268
Mortgage-backed securities: Commercial agency
Schedule of Available-for-sale Securities
Number of securities | Security	6	72
Amortized cost basis	$ 11,090	$ 498,321
Unrealized loss	$ 96	$ 14,756
Obligations of state and political subdivisions
Schedule of Available-for-sale Securities
Number of securities | Security	0	60
Amortized cost basis	$ 0	$ 185,175
Unrealized loss	$ 0	$ 3,208
Other securities
Schedule of Available-for-sale Securities
Number of securities | Security	4	7
Amortized cost basis	$ 4,901	$ 33,270
Unrealized loss	$ 99	$ 693

XML

Loans and Leases - Schedule of Non-Covered Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	$ 23,676,537	$ 22,519,815
Commercial loans and leases
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	16,299,881	15,125,322
Commercial loans and leases | Real estate - construction
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	1,330,014	1,196,366
Commercial loans and leases | Real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	2,468,061	2,395,822
Commercial loans and leases | Real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	6,011,681	5,796,117
Commercial loans and leases | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	6,490,125	5,737,017
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	4,649,745	4,359,156
Consumer and other loans
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	2,726,911	3,035,337
Consumer and other loans | Home equity
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	2,053,588	2,304,694
Consumer and other loans | Other
Accounts, Notes, Loans and Financing Receivable
Loans and leases, net of unearned income	$ 673,323	$ 730,643

XML

Leases - Maturities of Operating Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
2019	$ 6,732
2020	25,895
2021	23,847
2022	21,414
2023	16,659
2024 and thereafter	55,296
Total operating lease payments	149,843
Less: Imputed interest	18,043
Lease liabilities	$ 131,800	$ 118,900

XML

Derivative Instruments and Other Hedging Activities - Reconciliation of Gross Amounts in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivative assets
Gross derivative assets	$ 131,710	$ 24,174
Gross amounts not offset in the Balance Sheet, derivatives	(6,119)	(619)
Gross amounts not offset in the Balance Sheet, collateral	0	0
Net derivative assets	125,591	23,555
Derivative liabilities
Gross derivative liabilities	9,891	21,288
Gross amounts not offset in the Balance Sheet, derivatives	(6,119)	(619)
Gross amounts not offset in the Balance Sheet, collateral	0	0
Net derivative liabilities	3,772	20,669
Written and purchased options
Derivative assets
Gross derivative assets	3,581	3,285
Gross amounts not offset in the Balance Sheet, derivatives	0	0
Gross amounts not offset in the Balance Sheet, collateral	0	0
Net derivative assets	3,581	3,285
Derivative liabilities
Gross derivative liabilities	3,581	3,285
Gross amounts not offset in the Balance Sheet, derivatives	0	0
Gross amounts not offset in the Balance Sheet, collateral	0	0
Net derivative liabilities	3,581	3,285
Designated as Hedging Instruments | Interest rate contracts
Derivative assets
Gross derivative assets	23,338	3,469
Gross amounts not offset in the Balance Sheet, derivatives	0	0
Gross amounts not offset in the Balance Sheet, collateral	0	0
Net derivative assets	23,338	3,469
Not Designated as Hedging Instruments | Interest rate contracts
Derivative assets
Gross derivative assets	104,791	17,420
Gross amounts not offset in the Balance Sheet, derivatives	(6,119)	(619)
Gross amounts not offset in the Balance Sheet, collateral	0	0
Net derivative assets	98,672	16,801
Derivative liabilities
Gross derivative liabilities	6,310	18,003
Gross amounts not offset in the Balance Sheet, derivatives	(6,119)	(619)
Gross amounts not offset in the Balance Sheet, collateral	0	0
Net derivative liabilities	$ 191	$ 17,384

XML

Subsequent Events (Details)	3 Months Ended
	Jun. 30, 2020 $ / shares
Forecast | Subsequent Event
Subsequent Event [Line Items]
Number of shares exchanged per Company share	$ 4.584

XML

Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Title plant assets	$ 6.8	$ 6.8

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities
Net income	$ 301,579	$ 240,210
Depreciation, amortization, and accretion, including amortization of purchase accounting adjustments, and market value adjustments	5,638	(1,644)
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	33,504	27,290
Share-based compensation expense - equity awards	17,300	15,144
(Gain) loss on sale of OREO and long-lived assets, net of impairment	(1,657)	6,831
Securities losses, net	987	56
(Gain) loss on early termination of FDIC loss share agreements	0	(2,708)
Cash paid for early termination of FDIC loss share agreements	0	(5,637)
Deferred income tax expense	29,407	31,348
Originations of mortgage loans held for sale	(1,443,094)	(1,139,117)
Proceeds from sales of mortgage loans held for sale	1,347,850	1,260,962
Realized and unrealized (gain) on mortgage loans held for sale, net	(52,873)	(35,244)
Other operating activities, net	200,074	(36,390)
Net Cash Provided by Operating Activities	438,715	361,101
Cash Flows from Investing Activities
Proceeds from sales of securities available for sale	299,513	18,867
Proceeds from maturities, prepayments and calls of securities available for sale	549,747	493,095
Purchases of securities available for sale, net of securities available for sale acquired	(199,321)	(711,258)
Proceeds from maturities, prepayments and calls of securities held to maturity	20,353	11,464
Purchases of equity securities, net of equity securities acquired	(15,154)	(21,090)
Proceeds from sales of equity securities	25,741	70,371
Increase in loans, net of loans acquired	(1,135,759)	(767,715)
Proceeds from sales of premises and equipment	1,149	5,698
Purchases of premises and equipment, net of premises and equipment acquired	(17,030)	(11,575)
Proceeds from dispositions of OREO	9,471	12,166
Cash paid for additional investment in tax credit entities	(6,060)	(6,059)
Cash received for acquisition of a business, net of cash paid	0	99,318
Purchase of bank owned life insurance policies	0	(50,000)
Other investing activities, net	999	595
Net Cash Used in Investing Activities	268,116	345,233
Net Cash Provided by (Used in) Investing Activities	(466,351)	(856,123)
Cash Flows from Financing Activities
Increase in deposits, net of deposits acquired	1,213,854	662,680
Net change in short-term borrowings	(984,833)	251,422
Proceeds from long-term debt, net of long-term debt acquired	500,000	927,884
Repayments of long-term debt	(271,562)	(1,361,482)
Cash dividends paid on common stock	(68,667)	(62,937)
Cash dividends paid on preferred stock	(8,146)	(8,146)
Net share-based compensation stock transactions	(4,178)	(3,142)
Payments to repurchase common stock	(204,740)	(61,046)
Net proceeds from issuance of preferred stock	96,388	0
Net Increase (Decrease) In Cash and Cash Equivalents	240,480	(149,789)
Cash and Cash Equivalents at Beginning of Period	690,453	625,724
Cash and Cash Equivalents at End of Period	930,933	475,935
Supplemental Schedule of Non-cash Activities
Acquisition of real estate in settlement of loans	6,023	13,066
Common stock issued in acquisitions	0	214,659
Supplemental Disclosures
Cash paid for interest on deposits and borrowings, net of acquired	235,888	137,727
Cash paid for income taxes	57,287	34,968
Cash received from income tax refunds	$ 178,288	$ 364

XML

Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Principles of Consolidation

All significant intercompany balances and transactions have been eliminated in consolidation.

Reclassification

Certain amounts reported in prior periods have been reclassified to conform to the current period presentation.

Recent Accounting Pronouncements

RECENT ACCOUNTING PRONOUNCEMENTS

Pronouncements adopted during the nine months ended September 30, 2019:

ASU No. 2016-02, ASU No. 2018-11, ASU No. 2018-20, and ASU 2019-01

In February 2016, the FASB issued ASU No. 2016-02, Leases (ASC 842) which requires lessees to recognize ROU assets and lease liabilities on the balance sheet for most leases, including operating leases. The lessor accounting model was relatively unchanged by this ASU. Additional quantitative and qualitative disclosures are also required. During 2018 and early 2019, the FASB issued ASU No. 2018-11, Targeted Improvements, ASU No. 2018-20, Narrow-Scope Improvements for Lessors, and ASU No. 2019-01, Codification Improvements, which clarified certain implementation issues, provided an additional optional transition method and clarified the disclosure requirements during the period of adopting ASC 842, among others.

The Company adopted ASU No. 2016-02 and the related ASUs discussed above effective January 1, 2019 using the optional transition method. The Company elected the package of practical expedients that does not require the reassessment of whether expired or existing contracts contain leases, the reassessment of the lease classification for any expired or existing leases, or the reassessment of initial direct costs for existing leases. Additionally, the Company did not elect the hindsight practical expedient.

The Company conducted a review of all existing lease contracts and service contracts which might contain embedded leases. Some of the Company’s leases contain variable lease payments, the majority of which depend on an index or rate, such as the Consumer Price Index. At transition, the present value of variable payments was based on the index or rate as of January 1, 2019. To determine the present value of lease payments at transition, the Company applied a portfolio approach utilizing an FHLB Advance rate based on the weighted average remaining term of the Company’s existing leases as of January 1, 2019. As a result of adopting ASC 842, the Company established an ROU asset and a lease liability as of January 1, 2019 of $94.2 million and $118.9 million, respectively. Additionally, as part of the adoption of ASC 842, $24.7 million in pre-existing liabilities were reclassified to the ROU asset on January 1, 2019. This resulted in a gross-up of the balance sheet of $94.2 million as a result of recognizing lease liabilities and corresponding right-of-use assets for operating leases. The adoption of ASC 842 also required the recognition of previously deferred gains on sale-leaseback transactions which resulted in an insignificant increase to retained earnings on January 1, 2019. The related impact on the Company’s regulatory capital ratios was not significant. The Company does not expect material changes to the recognition of lease expense in future periods as a result of the adoption of ASC 842. See Note 8, Leases, for additional disclosures required by ASC 842.

ASU No. 2018-16

In October 2018, the FASB released ASU No. 2018-16, Derivatives and Hedging (ASC 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes, which permits the use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under ASC 815 in addition to the interest rates on direct Treasury obligations of the UST, the LIBOR swap rate, the OIS Rate based on the Fed Funds Effective Rate, and the SIFMA Municipal Swap Rate.

The required effective date of this ASU was dependent upon when an entity adopted the provisions of ASU No. 2017-12. The Company adopted ASU No. 2018-16 effective January 1, 2019 on a prospective basis for qualifying new or redesignated hedging relations as ASU No. 2017-12 had previously been adopted on January 1, 2018. The implementation of this ASU did not have a significant impact on the Company’s consolidated financial statements.

ASU No. 2017-08

In March 2017, the FASB issued ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities, which shortens the amortization period for callable debt securities held at a premium to the earliest call date instead of the maturity date. The amendments do not require an accounting change for securities held at a discount, which will continue to be amortized to the maturity date.

The Company adopted ASU No. 2017-08 effective January 1, 2019. The adoption of the ASU did not have a material impact to the Company’s consolidated financial statements.

Pronouncements issued but not yet adopted:

ASU No. 2016-13, ASU No. 2019-04 (portion related to ASC 326), and ASU No. 2019-05

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (ASC 326): Measurement of Credit Losses on Financial Instruments. The guidance introduces an impairment model that is based on expected credit losses (ECL), rather than incurred losses, to estimate credit losses on certain types of financial instruments such as loans and held-to-maturity securities, including certain off-balance sheet financial instruments such as loan commitments. The measurement of ECL should consider historical information, current information, and reasonable and supportable forecasts, including estimates of prepayments, over the contractual term. Financial instruments with similar risk characteristics must be grouped together when estimating ECL. The ASU also expands credit quality disclosures.

Additionally, ASU No. 2016-13 amends the current AFS security impairment model for debt securities. The new model will require an estimate of ECL when the fair value is below the amortized cost of the asset. The credit-related impairment (and subsequent recoveries) are recognized as an allowance on the balance sheet with a corresponding adjustment to the income statement. Non-credit related losses will continue to be recognized through OCI.

In addition, ASU No. 2016-13 provides for a simplified accounting model for purchased financial assets with a more-than-insignificant amount of credit deterioration since their origination. The initial estimate of expected credit losses would be recognized through an ALLL with an offset (i.e., increase) to the cost basis of the related financial asset at acquisition.

ASU No. 2016-13 will be effective for fiscal years beginning after December 15, 2019, including interim periods. This ASU will be applied through a modified-retrospective approach, resulting in a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. A prospective transition approach is required for debt securities for which OTTI had been recognized before the effective date. Amounts previously recognized in AOCI as of the date of adoption that relate to improvements in cash flows expected to be collected should continue to be accreted into income over the remaining life of the asset. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption should be recorded in earnings when received.

During 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Financial Instruments-Credit Losses (ASC 326), Derivatives and Hedging (ASC 815), and Financial Instruments (ASC 825), which clarified the scope of ASU No. 2016-13 and addressed various issues, including accrued interest receivable balances, recoveries, variable interest rates and prepayments, and ASU No. 2019-05, Financial Instruments-Credit Losses (Topic 326): Targeted Transition Relief, which clarified certain implementation issues. The effective date for the portion of ASU No. 2019-04 related to credit losses and ASU No. 2019-05 are the same as ASU No. 2016-13.

The Company’s cross-function implementation team and engaged third-party consultants have jointly developed and continue to execute the project plan and provide implementation oversight. Significant progress has been made in implementation efforts, including model development and validation, fulfillment of additional data needs for new disclosure and reporting requirements, and drafting of accounting policies. In October 2019, user acceptance testing was completed and the Company began concurrent model runs. Implementation efforts will continue through the remainder of 2019, including continued process refinement, documentation enhancement, and finalization of the internal control framework.

Based on a preliminary analysis performed in the third quarter of 2019 and forecasts of macroeconomic conditions and exposures as of September 30, 2019, the transition adjustment on January 1, 2020 is estimated to generate an ACL to loans ratio of 1.00% to 1.20%. The Company currently intends to use a blend of multiple economic forecasts to estimate expected credit losses over a one to two year reasonable and supportable forecast period and then revert to longer term historical loss experience to arrive at lifetime expected credit losses. The estimated increase in ACL is primarily due to required increases for residential mortgage and home equity loans to include the requirement to estimate lifetime expected credit losses and the remaining length of time to maturity for these loans as well as an increase in reserves on acquired non-impaired loans which had low reserve levels under the previous accounting guidance.

While these ASUs are expected to increase ACL, they do not change the overall credit risk in the Company's loan and lease portfolios or the ultimate losses therein. The transition adjustment to increase ACL will primarily result in a decrease to shareholders' equity, net of income taxes, on January 1, 2020. The ultimate impact of the adoption of these ASUs will depend on the composition of the loan, lease and securities portfolios, finalization of credit loss models, and macroeconomic conditions and forecasts at the adoption date.

ASU No. 2018-13

In August 2018, the FASB released ASU No. 2018-13, Fair Value Measurement (ASC 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, which eliminates, adds and modifies certain disclosure requirements for fair value measurements. The ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods, with early adoption permitted.

The Company is currently evaluating the impact of the ASU. While adoption of this ASU will result in changes to existing disclosures, it will not have an impact on the Company’s financial position or results of operations.

ASU No. 2018-17

In October 2018, the FASB released ASU No. 2018-17, Consolidation (ASC 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities, which improves the consistency of the application of the variable interest entity (VIE) related party guidance for common control arrangements. This ASU requires reporting entities to consider indirect interests held through related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety (as currently required in GAAP) when determining whether a decision-making fee is a variable interest. ASU No. 2018-17 will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and early adoption is permitted. The guidance will be applied retrospectively with a cumulative-effect adjustment to retained earnings at the beginning of the earliest period presented.

The Company is currently evaluating the impact of the ASU on the Company’s consolidated financial statements.

ASU No. 2019-04

In April 2019, the FASB released ASU No. 2019-04, Codification Improvements to Financial Instruments-Credit Losses (ASC 326), Derivatives and Hedging (ASC 815), and Financial Instruments (ASC 825). The amendments in the ASU improve the Codification by eliminating inconsistencies and providing clarifications. The amendments related to the credit losses standard are discussed above under ASU 2016-13.

With respect to hedge accounting, the ASU addresses partial-term fair value hedges, fair value hedge basis adjustments, and certain transition requirements, among other things. For recognizing and measuring financial instruments, the ASU addresses the scope of the guidance, the requirement for re-measurement under ASC 820 when using the measurement alternative, certain disclosure requirements and which equity securities have to be re-measured at historical exchange rates.

Since the Company early adopted the guidance in ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities in 2018, the amended hedge accounting guidance in ASU No. 2019-04 will be effective as of the beginning of the first annual reporting period beginning after April 25, 2019 with early adoption permitted on any date after the issuance of this ASU.

The Company is currently evaluating the impact of the ASU on the Company’s consolidated financial statements.

XML

Business Segments

9 Months Ended

Sep. 30, 2019

Segment Reporting [Abstract]

Business Segments

BUSINESS SEGMENTS

Each of the Company’s reportable operating segments serves the specific needs of the Company’s customers based on the products and services it offers. The reportable segments are based upon those revenue-producing components for which separate financial information is produced internally and primarily reflect the manner in which resources are allocated and performance is assessed. Further, the reportable operating segments are also determined based on the quantitative thresholds prescribed within ASC Topic 280, Segment Reporting, and consideration of the usefulness of the information to the users of the consolidated financial statements.

The Company reports the results of its operations through three reportable segments: IBERIABANK, Mortgage, and LTC. The IBERIABANK segment represents the Company’s commercial and retail banking functions, including its lending, investment, and deposit activities. IBERIABANK also includes the Company’s wealth management, capital markets, and other corporate functions. The Mortgage segment represents the Company’s origination, funding, and subsequent sale of one-to-four family residential mortgage loans. The LTC segment represents the Company’s title insurance and loan closing services.

Certain expenses not directly attributable to a specific reportable segment are allocated to segments based on pre-determined methods that reflect utilization. Also within IBERIABANK are certain reconciling items that translate reportable segment results into consolidated results. The following tables present certain information regarding operations by reportable segment, including a reconciliation of segment results to reported consolidated results for the periods presented. Reconciling items between segment results and reported results include:

• Elimination of interest income and interest expense representing interest earned by IBERIABANK on interest-bearing checking accounts held by related companies, as well as the elimination of the related deposit balances at the IBERIABANK segment;

• Elimination of investment in subsidiary balances on certain operating segments included in total and average segment assets; and

• Elimination of intercompany due to and due from balances on certain operating segments that are included in total and average segment assets.

	Three Months Ended September 30, 2019
(in thousands)	IBERIABANK			Mortgage		LTC			Consolidated
Interest and dividend income	$	330,896		$	2,282	$	—		$	333,178
Interest expense	83,845			—		—			83,845
Net interest income	247,051			2,282		—			249,333
Provision for (reversal of) credit losses	8,974			12		—			8,986
Mortgage income	—			17,432		—			17,432
Title revenue	—			—		7,170			7,170
Other non-interest income (expense)	35,881			3,194		(3		)	39,072
Allocated expenses (income)	(4,068		)	2,991		1,077			—
Non-interest expense	152,988			14,676		4,998			172,662
Income before income tax expense	125,038			5,229		1,092			131,359
Income tax expense	29,938			1,282		289			31,509
Net income	$	95,100		$	3,947	$	803		$	99,850
Total loans, leases, and loans held for sale, net of unearned income	$	23,650,057		$	281,756	$	—		$	23,931,813
Total assets	31,386,350			320,994		27,254			31,734,598
Total deposits	24,946,708			30,577		—			24,977,285
Average assets	31,256,216			271,817		26,258			31,554,291

	Three Months Ended September 30, 2018
(in thousands)	IBERIABANK			Mortgage			LTC		Consolidated
Interest and dividend income	$	315,467		$	1,599		$	1	$	317,067
Interest expense	57,842			—			—		57,842
Net interest income	257,625			1,599			1		259,225
Provision for (reversal of) credit losses	11,386			(2		)	—		11,384
Mortgage income	—			12,729			—		12,729
Title revenue	—			—			6,280		6,280
Other non-interest income (expense)	33,594			(16		)	500		34,078
Allocated expenses (income)	(3,691		)	2,680			1,011		—
Non-interest expense	154,000			10,223			4,839		169,062
Income before income tax expense	129,524			1,411			931		131,866
Income tax expense	29,765			386			250		30,401
Net income	$	99,759		$	1,025		$	681	$	101,465
Total loans, leases, and loans held for sale, net of unearned income	$	22,302,679		$	84,203		$	—	$	22,386,882
Total assets	29,974,065			119,322			25,000		30,118,387
Total deposits	23,179,549			13,897			—		23,193,446
Average assets	29,863,742			158,464			24,025		30,046,231

	Nine Months Ended September 30, 2019
(in thousands)	IBERIABANK			Mortgage			LTC			Consolidated
Interest and dividend income	$	989,595		$	5,633		$	1		$	995,229
Interest expense	240,073			—			—			240,073
Net interest income	749,522			5,633			1			755,156
Provision for (reversal of) credit losses	33,539			(35		)	—			33,504
Mortgage income	—			47,725			—			47,725
Title revenue	—			—			19,290			19,290
Other non-interest income (expense)	104,840			3,172			(19		)	107,993
Allocated expenses (income)	(10,515		)	7,741			2,774			—
Non-interest expense	447,882			38,807			14,344			501,033
Income before income tax expense	383,456			10,017			2,154			395,627
Income tax expense	91,047			2,425			576			94,048
Net income	$	292,409		$	7,592		$	1,578		$	301,579
Total loans, leases, and loans held for sale, net of unearned income	$	23,650,057		$	281,756		$	—		$	23,931,813
Total assets	31,386,350			320,994			27,254			31,734,598
Total deposits	24,946,708			30,577			—			24,977,285
Average assets	30,981,906			215,306			25,299			31,222,511

	Nine Months Ended September 30, 2018
(in thousands)	IBERIABANK			Mortgage			LTC			Consolidated
Interest and dividend income	$	886,629		$	4,802		$	2		$	891,433
Interest expense	143,206			—			—			143,206
Net interest income	743,423			4,802			2			748,227
Provision for (reversal of) credit losses	27,316			(26		)	—			27,290
Mortgage income	—			36,045			—			36,045
Title revenue	—			—			18,153			18,153
Other non-interest income (expense)	96,981			(83		)	497			97,395
Allocated expenses (income)	(9,043		)	6,714			2,329			—
Non-interest expense	505,423			34,105			14,382			553,910
Income (loss) before income tax expense	316,708			(29		)	1,941			318,620
Income tax expense (benefit)	78,516			(7		)	(99		)	78,410
Net income (loss)	$	238,192		$	(22	)	$	2,040		$	240,210
Total loans, leases, and loans held for sale, net of unearned income	$	22,302,679		$	84,203		$	—		$	22,386,882
Total assets	29,974,065			119,322			25,000			30,118,387
Total deposits	23,179,549			13,897			—			23,193,446
Average assets	29,136,369			164,039			23,037			29,323,445

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest and dividend income
Loans and leases, including fees	$ 296,790	$ 283,125	$ 878,355	$ 791,670
Mortgage loans held for sale, including fees	1,936	1,037	4,578	3,027
Taxable securities	27,883	27,113	93,461	79,058
Tax-exempt securities	2,049	2,680	6,399	8,154
Other	4,520	3,112	12,436	9,524
Total interest and dividend income	333,178	317,067	995,229	891,433
Interest expense
Deposits	70,753	44,401	196,854	108,804
Short-term borrowings	3,880	4,727	14,793	10,578
Long-term debt	9,212	8,714	28,426	23,824
Total interest expense	83,845	57,842	240,073	143,206
Net interest income	249,333	259,225	755,156	748,227
Provision for credit losses	8,986	11,384	33,504	27,290
Net interest income after provision for credit losses	240,347	247,841	721,652	720,937
Non-interest income
Income from bank owned life insurance	1,760	1,744	5,307	4,287
Securities gains (losses), net	27	0	(987)	(56)
Other non-interest income	7,114	3,583	15,415	10,971
Total non-interest income	63,674	53,087	175,008	151,593
Non-interest expense
Salaries and employee benefits	103,257	101,159	304,928	313,190
Net occupancy and equipment	21,316	18,889	58,879	58,867
Communication and delivery	3,634	3,773	10,931	11,888
Marketing and business development	3,163	4,068	10,651	13,715
Computer services expense	9,638	9,036	28,178	30,738
Professional services	6,323	5,519	17,017	20,070
Credit and other loan related expense	4,532	4,830	11,532	14,313
Insurance	4,825	6,536	13,276	20,587
Travel and entertainment	2,185	1,846	7,353	7,880
Amortization of acquisition intangibles	4,410	5,382	14,205	16,595
Impairment of long-lived assets and other (gains) losses	(309)	467	1,251	24,924
Other non-interest expense	9,688	7,557	22,832	21,143
Total non-interest expense	172,662	169,062	501,033	553,910
Income before income tax expense	131,359	131,866	395,627	318,620
Income tax expense	31,509	30,401	94,048	78,410
Net income	99,850	101,465	301,579	240,210
Less: Preferred stock dividends	3,599	3,599	8,146	8,146
Net income available to common shareholders	96,251	97,866	293,433	232,064
Less: Earnings allocated to unvested restricted stock	874	908	2,806	2,341
Earnings allocated to common shareholders	$ 95,377	$ 96,958	$ 290,627	$ 229,723
Earnings per common share - Basic (in usd per share)	$ 1.83	$ 1.74	$ 5.47	$ 4.17
Earnings per common share - Diluted (in usd per share)	1.82	1.73	5.43	4.14
Cash dividends declared per common share (in usd per share)	$ 0.45	$ 0.39	$ 1.31	$ 1.15
Comprehensive income
Net income	$ 99,850	$ 101,465	$ 301,579	$ 240,210
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during the period (net of tax effects of $2,294, $5,906, $27,805, and $24,578, respectively)	6,975	(22,220)	93,491	(92,460)
Less: Reclassification adjustment for gains (losses) included in net income (net of tax effects of $7, $0, $244, and $12, respectively)	20	0	(743)	(44)
Unrealized gains (losses) on securities, net of tax	6,955	(22,220)	94,234	(92,416)
Fair value of derivative instruments designated as cash flow hedges:
Change in fair value of derivative instruments designated as cash flow hedges during the period (net of tax effects of $86, $217, $903, and $1,266, respectively)	(264)	818	1,992	4,762
Less: Reclassification adjustment for gains (losses) included in net income (net of tax effects of $53, $6, $154, and $47, respectively)	(162)	(22)	(467)	(178)
Fair value of derivative instruments designated as cash flow hedges, net of tax	(102)	840	2,459	4,940
Other comprehensive income (loss), net of tax	6,853	(21,380)	96,693	(87,476)
Comprehensive income	106,703	80,085	398,272	152,734
Mortgage income
Non-interest income
Non-interest income	17,432	12,729	47,725	36,045
Service charges on deposit accounts
Non-interest income
Non-interest income	13,209	13,520	38,866	39,378
Title revenue
Non-interest income
Non-interest income	7,170	6,280	19,290	18,153
Broker commissions
Non-interest income
Non-interest income	1,800	2,627	5,797	7,244
ATM and debit card fee income
Non-interest income
Non-interest income	2,948	2,470	8,562	8,028
Credit card and merchant-related income
Non-interest income
Non-interest income	3,400	3,114	10,037	9,347
Trust department income
Non-interest income
Non-interest income	4,281	3,993	12,836	11,662
Commission income
Non-interest income
Non-interest income	$ 4,533	$ 3,027	$ 12,160	$ 6,534

XML

Earnings Per Share

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

The computations of basic and diluted earnings per share were as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands, except per share data)	2019			2018			2019			2018
Earnings Per Common Share - Basic:
Net income	$	99,850		$	101,465		$	301,579		$	240,210
Less: Preferred stock dividends	3,599			3,599			8,146			8,146
Less: Dividends and undistributed earnings allocated to unvested restricted shares	874			908			2,806			2,341
Earnings allocated to common shareholders - basic	$	95,377		$	96,958		$	290,627		$	229,723
Weighted average common shares outstanding	51,984			55,571			53,160			55,047
Earnings per common share - basic	$	1.83		$	1.74		$	5.47		$	4.17
Earnings Per Common Share - Diluted:
Earnings allocated to common shareholders - basic	$	95,377		$	96,958		$	290,627		$	229,723
Adjustment for undistributed earnings allocated to unvested restricted shares	(17		)	(25		)	(37		)	(49		)
Earnings allocated to common shareholders - diluted	$	95,360		$	96,933		$	290,590		$	229,674
Weighted average common shares outstanding	51,984			55,571			53,160			55,047
Dilutive potential common shares	308			374			333			360
Weighted average common shares outstanding - diluted	52,292			55,945			53,493			55,407
Earnings per common share - diluted	$	1.82		$	1.73		$	5.43		$	4.14

For the three months ended September 30, 2019 and 2018, the calculations for basic shares outstanding excluded weighted average shares owned by the RRP of 491,977 and 542,796, respectively. For the nine months ended September 30, 2019 and 2018, the calculations for basic shares outstanding excluded weighted average shares owned by the RRP of 525,652 and 581,397, respectively.

The effects from the assumed exercises of 152,991 and 60,931 stock options were not included in the computation of diluted earnings per share for the three months ended September 30, 2019 and 2018, respectively, because they were antidilutive. For the nine months ended September 30, 2019 and 2018, the effects from the assumed exercises of 152,991 and 147,834 stock options, respectively, were not included in the computation of diluted earnings per share because they were antidilutive.

XML

Goodwill and Other Intangible Assets

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill

Changes to the carrying amount of goodwill by reporting unit for the nine months ended September 30, 2019, and the year ended December 31, 2018 are provided in the following table:

(in thousands)	IBERIABANK		Mortgage		LTC		Total
Balance, December 31, 2017	$	1,160,559	$	23,178	$	5,165	$	1,188,902
Goodwill acquired and adjustments during the year	43,251		—		3,380		46,631
Balance, December 31, 2018	$	1,203,810	$	23,178	$	8,545	$	1,235,533
Goodwill acquired and adjustments during the year	—		—		—		—
Balance, September 30, 2019	$	1,203,810	$	23,178	$	8,545	$	1,235,533

The goodwill acquired and adjustments made during 2018 were the result of the Sabadell United, Gibraltar, and SolomonParks acquisitions. There were no changes to goodwill during the nine months ended September 30, 2019.

The Company performed the required annual goodwill impairment test as of October 1, 2018. The Company’s annual impairment test did not indicate impairment in any of the Company’s reporting units as of the testing date. Following the testing date, management evaluated the events and changes that could indicate that goodwill might be impaired and concluded that a subsequent interim test was not necessary. The Company is currently in the process of performing its annual impairment test as of October 1, 2019.

Mortgage Servicing Rights

Mortgage servicing rights are recorded at the lower of cost or market value in other intangible assets on the Company's consolidated balance sheets and amortized over the remaining servicing life of the loans, with consideration given to prepayment assumptions. Mortgage servicing rights had the following carrying values as of the periods indicated:

	September 30, 2019										December 31, 2018
	Gross Carrying Amount		Valuation Allowance			Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Valuation Allowance		Accumulated Amortization			Net Carrying Amount
(in thousands)
Mortgage servicing rights	$	19,517	$	(195	)	$	(5,994	)	$	13,328	$	13,612	$	—	$	(4,806	)	$	8,806

Title Plant

The Company held title plant assets recorded in other intangible assets on the Company's consolidated balance sheets totaling $6.8 million at both September 30, 2019 and December 31, 2018. No events or changes in circumstances occurred during the nine months ended September 30, 2019 to suggest the carrying value of the title plant was not recoverable.

Intangible assets subject to amortization

Definite-lived intangible assets had the following carrying values included in other intangible assets on the Company’s consolidated balance sheets as of the periods indicated:

	September 30, 2019							December 31, 2018
(in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core deposit intangible assets	$	136,183	$	(77,256	)	$	58,927	$	136,183	$	(63,213	)	$	72,970
Customer relationship intangible asset	1,385		(1,363		)	22		1,385		(1,323		)	62
Non-compete agreement	206		(102		)	104		206		(72		)	134
Total	$	137,774	$	(78,721	)	$	59,053	$	137,774	$	(64,608	)	$	73,166

XML

Recent Accounting Pronouncements

9 Months Ended

Sep. 30, 2019

Accounting Changes and Error Corrections [Abstract]

Recent Accounting Pronouncements

RECENT ACCOUNTING PRONOUNCEMENTS

Pronouncements adopted during the nine months ended September 30, 2019:

ASU No. 2016-02, ASU No. 2018-11, ASU No. 2018-20, and ASU 2019-01

In February 2016, the FASB issued ASU No. 2016-02, Leases (ASC 842) which requires lessees to recognize ROU assets and lease liabilities on the balance sheet for most leases, including operating leases. The lessor accounting model was relatively unchanged by this ASU. Additional quantitative and qualitative disclosures are also required. During 2018 and early 2019, the FASB issued ASU No. 2018-11, Targeted Improvements, ASU No. 2018-20, Narrow-Scope Improvements for Lessors, and ASU No. 2019-01, Codification Improvements, which clarified certain implementation issues, provided an additional optional transition method and clarified the disclosure requirements during the period of adopting ASC 842, among others.

The Company adopted ASU No. 2016-02 and the related ASUs discussed above effective January 1, 2019 using the optional transition method. The Company elected the package of practical expedients that does not require the reassessment of whether expired or existing contracts contain leases, the reassessment of the lease classification for any expired or existing leases, or the reassessment of initial direct costs for existing leases. Additionally, the Company did not elect the hindsight practical expedient.

The Company conducted a review of all existing lease contracts and service contracts which might contain embedded leases. Some of the Company’s leases contain variable lease payments, the majority of which depend on an index or rate, such as the Consumer Price Index. At transition, the present value of variable payments was based on the index or rate as of January 1, 2019. To determine the present value of lease payments at transition, the Company applied a portfolio approach utilizing an FHLB Advance rate based on the weighted average remaining term of the Company’s existing leases as of January 1, 2019. As a result of adopting ASC 842, the Company established an ROU asset and a lease liability as of January 1, 2019 of $94.2 million and $118.9 million, respectively. Additionally, as part of the adoption of ASC 842, $24.7 million in pre-existing liabilities were reclassified to the ROU asset on January 1, 2019. This resulted in a gross-up of the balance sheet of $94.2 million as a result of recognizing lease liabilities and corresponding right-of-use assets for operating leases. The adoption of ASC 842 also required the recognition of previously deferred gains on sale-leaseback transactions which resulted in an insignificant increase to retained earnings on January 1, 2019. The related impact on the Company’s regulatory capital ratios was not significant. The Company does not expect material changes to the recognition of lease expense in future periods as a result of the adoption of ASC 842. See Note 8, Leases, for additional disclosures required by ASC 842.

ASU No. 2018-16

In October 2018, the FASB released ASU No. 2018-16, Derivatives and Hedging (ASC 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes, which permits the use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under ASC 815 in addition to the interest rates on direct Treasury obligations of the UST, the LIBOR swap rate, the OIS Rate based on the Fed Funds Effective Rate, and the SIFMA Municipal Swap Rate.

The required effective date of this ASU was dependent upon when an entity adopted the provisions of ASU No. 2017-12. The Company adopted ASU No. 2018-16 effective January 1, 2019 on a prospective basis for qualifying new or redesignated hedging relations as ASU No. 2017-12 had previously been adopted on January 1, 2018. The implementation of this ASU did not have a significant impact on the Company’s consolidated financial statements.

ASU No. 2017-08

In March 2017, the FASB issued ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities, which shortens the amortization period for callable debt securities held at a premium to the earliest call date instead of the maturity date. The amendments do not require an accounting change for securities held at a discount, which will continue to be amortized to the maturity date.

The Company adopted ASU No. 2017-08 effective January 1, 2019. The adoption of the ASU did not have a material impact to the Company’s consolidated financial statements.

Pronouncements issued but not yet adopted:

ASU No. 2016-13, ASU No. 2019-04 (portion related to ASC 326), and ASU No. 2019-05

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (ASC 326): Measurement of Credit Losses on Financial Instruments. The guidance introduces an impairment model that is based on expected credit losses (ECL), rather than incurred losses, to estimate credit losses on certain types of financial instruments such as loans and held-to-maturity securities, including certain off-balance sheet financial instruments such as loan commitments. The measurement of ECL should consider historical information, current information, and reasonable and supportable forecasts, including estimates of prepayments, over the contractual term. Financial instruments with similar risk characteristics must be grouped together when estimating ECL. The ASU also expands credit quality disclosures.

Additionally, ASU No. 2016-13 amends the current AFS security impairment model for debt securities. The new model will require an estimate of ECL when the fair value is below the amortized cost of the asset. The credit-related impairment (and subsequent recoveries) are recognized as an allowance on the balance sheet with a corresponding adjustment to the income statement. Non-credit related losses will continue to be recognized through OCI.

In addition, ASU No. 2016-13 provides for a simplified accounting model for purchased financial assets with a more-than-insignificant amount of credit deterioration since their origination. The initial estimate of expected credit losses would be recognized through an ALLL with an offset (i.e., increase) to the cost basis of the related financial asset at acquisition.

ASU No. 2016-13 will be effective for fiscal years beginning after December 15, 2019, including interim periods. This ASU will be applied through a modified-retrospective approach, resulting in a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. A prospective transition approach is required for debt securities for which OTTI had been recognized before the effective date. Amounts previously recognized in AOCI as of the date of adoption that relate to improvements in cash flows expected to be collected should continue to be accreted into income over the remaining life of the asset. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption should be recorded in earnings when received.

During 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Financial Instruments-Credit Losses (ASC 326), Derivatives and Hedging (ASC 815), and Financial Instruments (ASC 825), which clarified the scope of ASU No. 2016-13 and addressed various issues, including accrued interest receivable balances, recoveries, variable interest rates and prepayments, and ASU No. 2019-05, Financial Instruments-Credit Losses (Topic 326): Targeted Transition Relief, which clarified certain implementation issues. The effective date for the portion of ASU No. 2019-04 related to credit losses and ASU No. 2019-05 are the same as ASU No. 2016-13.

The Company’s cross-function implementation team and engaged third-party consultants have jointly developed and continue to execute the project plan and provide implementation oversight. Significant progress has been made in implementation efforts, including model development and validation, fulfillment of additional data needs for new disclosure and reporting requirements, and drafting of accounting policies. In October 2019, user acceptance testing was completed and the Company began concurrent model runs. Implementation efforts will continue through the remainder of 2019, including continued process refinement, documentation enhancement, and finalization of the internal control framework.

Based on a preliminary analysis performed in the third quarter of 2019 and forecasts of macroeconomic conditions and exposures as of September 30, 2019, the transition adjustment on January 1, 2020 is estimated to generate an ACL to loans ratio of 1.00% to 1.20%. The Company currently intends to use a blend of multiple economic forecasts to estimate expected credit losses over a one to two year reasonable and supportable forecast period and then revert to longer term historical loss experience to arrive at lifetime expected credit losses. The estimated increase in ACL is primarily due to required increases for residential mortgage and home equity loans to include the requirement to estimate lifetime expected credit losses and the remaining length of time to maturity for these loans as well as an increase in reserves on acquired non-impaired loans which had low reserve levels under the previous accounting guidance.

While these ASUs are expected to increase ACL, they do not change the overall credit risk in the Company's loan and lease portfolios or the ultimate losses therein. The transition adjustment to increase ACL will primarily result in a decrease to shareholders' equity, net of income taxes, on January 1, 2020. The ultimate impact of the adoption of these ASUs will depend on the composition of the loan, lease and securities portfolios, finalization of credit loss models, and macroeconomic conditions and forecasts at the adoption date.

ASU No. 2018-13

In August 2018, the FASB released ASU No. 2018-13, Fair Value Measurement (ASC 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, which eliminates, adds and modifies certain disclosure requirements for fair value measurements. The ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods, with early adoption permitted.

The Company is currently evaluating the impact of the ASU. While adoption of this ASU will result in changes to existing disclosures, it will not have an impact on the Company’s financial position or results of operations.

ASU No. 2018-17

In October 2018, the FASB released ASU No. 2018-17, Consolidation (ASC 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities, which improves the consistency of the application of the variable interest entity (VIE) related party guidance for common control arrangements. This ASU requires reporting entities to consider indirect interests held through related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety (as currently required in GAAP) when determining whether a decision-making fee is a variable interest. ASU No. 2018-17 will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and early adoption is permitted. The guidance will be applied retrospectively with a cumulative-effect adjustment to retained earnings at the beginning of the earliest period presented.

The Company is currently evaluating the impact of the ASU on the Company’s consolidated financial statements.

ASU No. 2019-04

In April 2019, the FASB released ASU No. 2019-04, Codification Improvements to Financial Instruments-Credit Losses (ASC 326), Derivatives and Hedging (ASC 815), and Financial Instruments (ASC 825). The amendments in the ASU improve the Codification by eliminating inconsistencies and providing clarifications. The amendments related to the credit losses standard are discussed above under ASU 2016-13.

With respect to hedge accounting, the ASU addresses partial-term fair value hedges, fair value hedge basis adjustments, and certain transition requirements, among other things. For recognizing and measuring financial instruments, the ASU addresses the scope of the guidance, the requirement for re-measurement under ASC 820 when using the measurement alternative, certain disclosure requirements and which equity securities have to be re-measured at historical exchange rates.

Since the Company early adopted the guidance in ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities in 2018, the amended hedge accounting guidance in ASU No. 2019-04 will be effective as of the beginning of the first annual reporting period beginning after April 25, 2019 with early adoption permitted on any date after the issuance of this ASU.

The Company is currently evaluating the impact of the ASU on the Company’s consolidated financial statements.

XML

Shareholders' Equity, Capital Ratios and Other Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2019

Banking and Thrift [Abstract]

Schedule of Preferred Stock

The following table presents a summary of the Company's non-cumulative perpetual preferred stock:

							September 30, 2019		December 31, 2018
	Issuance Date	Earliest Redemption Date	Annual Dividend Rate		Liquidation Amount		Carrying Amount		Carrying Amount
(in thousands)
Series B Preferred Stock	8/5/2015	8/1/2025	6.625	%	$	80,000	$	76,812	$	76,812
Series C Preferred Stock	5/9/2016	5/1/2026	6.600	%	57,500		55,285		55,285
Series D Preferred Stock	4/4/2019	5/1/2024	6.100	%	100,000		96,388		—
					$	237,500	$	228,485	$	132,097

Actual Capital Amounts and Ratios

The Company’s and IBERIABANK’s actual capital amounts and ratios as of September 30, 2019 and December 31, 2018 are presented in the following tables:

(in thousands)	September 30, 2019
	Minimum				Well-Capitalized		Actual
	Amount		Ratio		Amount	Ratio	Amount		Ratio
Tier 1 Leverage
Consolidated	$	1,208,894	4.00	%	N/A	N/A	$	2,955,775	9.78	%
IBERIABANK	1,206,257		4.00		1,507,821	5.00	2,861,883		9.49
Common Equity Tier 1 (CET1)
Consolidated	$	1,179,356	4.50	%	N/A	N/A	$	2,727,290	10.41	%
IBERIABANK	1,175,984		4.50		1,698,643	6.50	2,861,883		10.95
Tier 1 Risk-Based Capital
Consolidated	$	1,572,475	6.00	%	N/A	N/A	$	2,955,775	11.28	%
IBERIABANK	1,567,978		6.00		2,090,638	8.00	2,861,883		10.95
Total Risk-Based Capital
Consolidated	$	2,096,633	8.00	%	N/A	N/A	$	3,234,654	12.34	%
IBERIABANK	2,090,638		8.00		2,613,297	10.00	3,024,262		11.57

(in thousands)	December 31, 2018
	Minimum				Well-Capitalized		Actual
	Amount		Ratio		Amount	Ratio	Amount		Ratio
Tier 1 Leverage
Consolidated	$	1,168,343	4.00	%	N/A	N/A	$	2,812,863	9.63	%
IBERIABANK	1,165,537		4.00		1,456,921	5.00	2,733,099		9.38
Common Equity Tier 1 (CET1)
Consolidated	$	1,125,405	4.50	%	N/A	N/A	$	2,680,766	10.72	%
IBERIABANK	1,122,712		4.50		1,621,695	6.50	2,733,099		10.95
Tier 1 Risk-Based Capital
Consolidated	$	1,500,540	6.00	%	N/A	N/A	$	2,812,863	11.25	%
IBERIABANK	1,496,949		6.00		1,995,932	8.00	2,733,099		10.95
Total Risk-Based Capital
Consolidated	$	2,000,720	8.00	%	N/A	N/A	$	3,084,764	12.33	%
IBERIABANK	1,995,932		8.00		2,494,915	10.00	2,888,500		11.58

XML

Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Estimated Fair Values and Carrying Amounts of Financial Instruments

The carrying amount and estimated fair values of the Company’s financial instruments, as well as the level within the fair value hierarchy, are included in the tables below. See Note 1, Summary of Significant Accounting Policies, and Note 2, Recent Accounting Pronouncements, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

		September 30, 2019
(in thousands)		Carrying  Amount		Fair Value		Level 1		Level 2		Level 3
Measurement Category
Fair Value
	Financial Assets
	Securities available for sale	$	4,238,082	$	4,238,082	$	—	$	4,238,082	$	—
	Mortgage loans held for sale	255,276		255,276		—		255,276		—
	Mortgage loans held for investment, at fair value option	4,138		4,138		—		—		4,138
	Derivative instruments	136,235		136,235		—		136,235		—
	Financial Liabilities
	Derivative instruments	10,851		10,851		—		10,851		—
Amortized Cost
	Financial Assets
	Cash and cash equivalents	$	930,933	$	930,933	$	930,933	$	—	$	—
	Securities held to maturity	185,007		192,586		—		192,586		—
	Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	23,526,164		23,290,286		—		—		23,290,286
	Financial Liabilities
	Deposits	24,977,285		24,985,510		—		24,985,510		—
	Short-term borrowings	498,049		498,049		223,049		275,000		—
	Long-term debt	1,394,202		1,391,857		—		—		1,391,857

		December 31, 2018
(in thousands)		Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Measurement Category
Fair Value
	Financial Assets
	Securities available for sale	$	4,783,579	$	4,783,579	$	—	$	4,783,579	$	—
	Mortgage loans held for sale	107,734		107,734		—		107,734		—
	Mortgage loans held for investment, at fair value option	3,143		3,143		—		—		3,143
	Derivative instruments	27,048		27,048		—		27,048		—
	Financial Liabilities
	Derivative instruments	22,124		22,124		—		22,124		—
Amortized Cost
	Financial Assets
	Cash and cash equivalents	$	690,453	$	690,453	$	690,453	$	—	$	—
	Securities held to maturity	207,446		204,277		—		204,277		—
	Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	22,376,101		22,088,236		—		—		22,088,236
	Financial Liabilities
	Deposits	23,763,431		23,752,139		—		23,752,139		—
	Short-term borrowings	1,482,882		1,482,882		315,882		1,167,000		—
	Long-term debt	1,166,151		1,154,062		—		—		1,154,062

XML

Allowance for Credit Losses and Credit Quality - Investment in Legacy and Acquired Loans by Credit Quality Indicator (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses
Total Loans	$ 23,676,537	$ 22,519,815
Commercial Loans
Financing Receivable, Allowance for Credit Losses
Total Loans	16,299,881	15,125,322
Commercial Loans | Real estate - construction
Financing Receivable, Allowance for Credit Losses
Total Loans	1,330,014	1,196,366
Commercial Loans | Real estate - owner-occupied
Financing Receivable, Allowance for Credit Losses
Total Loans	2,468,061	2,395,822
Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Allowance for Credit Losses
Total Loans	6,011,681	5,796,117
Commercial Loans | Commercial and industrial
Financing Receivable, Allowance for Credit Losses
Total Loans	6,490,125	5,737,017
Residential and Consumer Portfolio
Financing Receivable, Allowance for Credit Losses
Current	7,245,248	7,270,042
30 or more days past due	131,408	124,451
Total Loans	7,376,656	7,394,493
Residential mortgage loans | Residential mortgage
Financing Receivable, Allowance for Credit Losses
Current	4,567,633	4,290,152
30 or more days past due	82,112	69,004
Total Loans	4,649,745	4,359,156
Consumer and Other Loans | Consumer - Home equity
Financing Receivable, Allowance for Credit Losses
Current	2,011,913	2,258,659
30 or more days past due	41,675	46,035
Total Loans	2,053,588	2,304,694
Consumer and Other Loans | Consumer - Other
Financing Receivable, Allowance for Credit Losses
Current	665,702	721,231
30 or more days past due	7,621	9,412
Total Loans	673,323	730,643
Pass | Commercial Loans
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	15,977,343	14,785,998
Pass | Commercial Loans | Real estate - construction
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	1,300,847	1,182,554
Pass | Commercial Loans | Real estate - owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	2,409,221	2,328,999
Pass | Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	5,926,537	5,687,963
Pass | Commercial Loans | Commercial and industrial
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	6,340,738	5,586,482
Special Mention | Commercial Loans
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	158,342	157,229
Special Mention | Commercial Loans | Real estate - construction
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	19,631	1,062
Special Mention | Commercial Loans | Real estate - owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	19,786	25,526
Special Mention | Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	47,494	78,009
Special Mention | Commercial Loans | Commercial and industrial
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	71,431	52,632
Substandard | Commercial Loans
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	148,246	154,402
Substandard | Commercial Loans | Real estate - construction
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	9,536	12,740
Substandard | Commercial Loans | Real estate - owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	38,214	41,297
Substandard | Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	37,193	26,512
Substandard | Commercial Loans | Commercial and industrial
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	63,303	73,853
Doubtful | Commercial Loans
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	15,940	27,693
Doubtful | Commercial Loans | Real estate - construction
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	0	10
Doubtful | Commercial Loans | Real estate - owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	840	0
Doubtful | Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	447	3,633
Doubtful | Commercial Loans | Commercial and industrial
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	14,653	$ 24,050
Loss | Commercial and industrial
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	0
Loss | Commercial Loans
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	10
Loss | Commercial Loans | Real estate - construction
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	0
Loss | Commercial Loans | Real estate - owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	0
Loss | Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Allowance for Credit Losses
Gross loans and leases receivable	$ 10

XML

Loans and Leases - Schedule of Modified TDRs (Detail) - TDRs Occurring during the Period - TDRs $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) SecurityLoan	Sep. 30, 2018 USD ($) SecurityLoan	Sep. 30, 2019 USD ($) SecurityLoan	Sep. 30, 2018 USD ($) SecurityLoan
Financing Receivable, Modifications
Number of Loans | SecurityLoan	74	45	236	163
Pre-modification Outstanding Recorded Investment	$ 28,561	$ 6,720	$ 71,162	$ 59,322
Recorded investment	$ 4,111	$ 1,529	$ 17,084	$ 18,195
Number of loans | SecurityLoan	17	14	124	88
Extended maturities	$ 2,476	$ 3,658	$ 13,097	$ 10,020
Maturity and interest rate adjustment	288	267	715	368
Movement to or extension of interest-rate only payments	48	0	1,827	48
Interest rate adjustment	0	0	71	101
Financing Receivable Modifications Forbearance	22,202	802	25,068	14,386
Other concession(s)	3,724	1,810	20,250	21,031
TDRs during period	$ 28,738	$ 6,537	$ 61,028	$ 45,954
Commercial Loans | Real estate - construction
Financing Receivable, Modifications
Number of Loans | SecurityLoan	1	0	1	1
Pre-modification Outstanding Recorded Investment	$ 6,331	$ 0	$ 6,331	$ 1,950
TDRs during period	$ 7,602	$ 0	$ 7,602	$ 976
Commercial Loans | Real estate - owner-occupied
Financing Receivable, Modifications
Number of Loans | SecurityLoan	7	1	11	8
Pre-modification Outstanding Recorded Investment	$ 8,936	$ 2,312	$ 10,153	$ 15,233
Recorded investment	$ 0	$ 929	$ 1,225	$ 10,101
Number of loans | SecurityLoan	0	1	6	6
TDRs during period	$ 8,691	$ 2,312	$ 9,869	$ 13,373
Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Modifications
Number of Loans | SecurityLoan	6	6	16	13
Pre-modification Outstanding Recorded Investment	$ 1,553	$ 1,818	$ 7,931	$ 3,228
Recorded investment	$ 2,460	$ 7	$ 5,176	$ 1,084
Number of loans | SecurityLoan	2	1	16	6
TDRs during period	$ 1,210	$ 1,790	$ 7,233	$ 3,064
Commercial Loans | Commercial and industrial
Financing Receivable, Modifications
Number of Loans | SecurityLoan	14	9	48	32
Pre-modification Outstanding Recorded Investment	$ 1,954	$ 829	$ 29,156	$ 32,827
Recorded investment	$ 1,429	$ 127	$ 6,859	$ 3,632
Number of loans | SecurityLoan	8	2	25	12
TDRs during period	$ 1,952	$ 804	$ 19,594	$ 22,769
Residential mortgage loans | Residential mortgage
Financing Receivable, Modifications
Number of Loans | SecurityLoan	10	3	28	9
Pre-modification Outstanding Recorded Investment	$ 7,210	$ 257	$ 8,897	$ 898
Recorded investment	$ 101	$ 0	$ 1,394	$ 912
Number of loans | SecurityLoan	1	0	18	8
TDRs during period	$ 6,870	$ 255	$ 8,524	$ 837
Consumer and Other Loans | Consumer - Home equity
Financing Receivable, Modifications
Number of Loans | SecurityLoan	19	15	69	47
Pre-modification Outstanding Recorded Investment	$ 2,375	$ 1,152	$ 7,629	$ 4,130
Recorded investment	$ 64	$ 380	$ 1,873	$ 1,978
Number of loans | SecurityLoan	1	4	21	17
TDRs during period	$ 2,237	$ 1,124	$ 7,268	$ 4,047
Consumer and Other Loans | Consumer - Other
Financing Receivable, Modifications
Number of Loans | SecurityLoan	17	11	63	53
Pre-modification Outstanding Recorded Investment	$ 202	$ 352	$ 1,065	$ 1,056
Recorded investment	$ 57	$ 86	$ 557	$ 488
Number of loans | SecurityLoan	5	6	38	39
TDRs during period	$ 176	$ 252	$ 938	$ 888

XML

Shareholders' Equity, Capital Ratios and Other Regulatory Matters - Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended		9 Months Ended
	Aug. 01, 2024	Apr. 04, 2019	May 09, 2016	Aug. 05, 2015	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Class of Stock [Line Items]
Preferred stock, shares issued					23,750		23,750		13,750
Preferred stock, par value (in usd per share)					$ 1		$ 1		$ 1
Liquidation preference (per share)					$ 10,000		$ 10,000		$ 10,000
Liquidation preference value			$ 237,500
Carrying Amount					$ 228,485		$ 228,485		$ 132,097
Common stock repurchases					$ 40,016	$ 30,376	$ 204,740	$ 61,046
Shares authorized to be repurchased					1,165,000		1,165,000
Series B Preferred Stock
Class of Stock [Line Items]
Ownership per share				6.625%
Liquidation preference value				$ 80,000
Carrying Amount					$ 76,812		$ 76,812		76,812
Series C Preferred Stock
Class of Stock [Line Items]
Ownership per share			6.60%
Liquidation preference value			$ 57,500
Carrying Amount					55,285		55,285		55,285
Series D Preferred Stock
Class of Stock [Line Items]
Ownership per share		6.10%
Preferred stock, par value (in usd per share)		$ 1.00
Liquidation preference (per share)		$ 10,000
Liquidation preference value		$ 100,000
Carrying Amount					$ 96,388		$ 96,388		$ 0
Series D Depositary Shares
Class of Stock [Line Items]
Preferred stock, shares issued		4,000,000
Liquidation preference (per share)		$ 25
Common Stock
Class of Stock [Line Items]
Common stock repurchases (in shares)					552,230	363,210	2,700,000	763,210
Common stock repurchases					$ 552	$ 363	$ 2,700	$ 763
2018 Share Repurchase Plan | Common Stock
Class of Stock [Line Items]
Number of shares authorized to be repurchased									2,765,000
Common stock repurchases (in shares)					117,230
2019 Share Repurchase Program | Common Stock
Class of Stock [Line Items]
Number of shares authorized to be repurchased					1,600,000		1,600,000
Percentage of outstanding common shares					3.00%
2016 and 2018 Share Repurchase Program
Class of Stock [Line Items]
Common stock repurchases					$ 40,000	$ 30,400	$ 204,700
Average cost of common stock shares repurchased (in usd per share)					$ 72.46	$ 83.63	$ 75.83	$ 79.99
2016 and 2018 Share Repurchase Program | Common Stock
Class of Stock [Line Items]
Common stock repurchases (in shares)					552,230	363,210	2,700,000	763,210
Common stock repurchases								$ 61,000
Forecast | Series D Preferred Stock
Class of Stock [Line Items]
Variable dividend rate after August 1, 2024	3.859%

XML

Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Assets
Securities available for sale, at fair value	$ 4,238,082,000	$ 4,783,579,000
Mortgage loans held for sale	255,276,000	107,734,000
Mortgage loans held for investment, at fair value option	4,138,000	3,143,000
Derivative instruments	131,710,000	24,174,000
Liabilities
Derivative instruments	9,891,000	21,288,000
Fair value assets transferred from Level 1 to Level 2	0
Level 1
Assets
Securities available for sale, at fair value	0	0
Mortgage loans held for investment, at fair value option	0	0
Level 2
Assets
Securities available for sale, at fair value	4,238,082,000	4,783,579,000
Mortgage loans held for investment, at fair value option	0	0
Level 3
Assets
Securities available for sale, at fair value	0	0
Mortgage loans held for investment, at fair value option	4,138,000	3,143,000
Recurring
Assets
Securities available for sale, at fair value	4,238,082,000	4,783,579,000
Mortgage loans held for sale	255,276,000	107,734,000
Mortgage loans held for investment, at fair value option	4,138,000	3,143,000
Derivative instruments	136,235,000	27,048,000
Total	4,633,731,000	4,921,504,000
Liabilities
Derivative instruments	10,851,000	22,124,000
Total	10,851,000	22,124,000
Recurring | Level 1
Assets
Securities available for sale, at fair value	0	0
Mortgage loans held for sale	0	0
Mortgage loans held for investment, at fair value option	0	0
Derivative instruments	0	0
Total	0	0
Liabilities
Derivative instruments	0	0
Total	0	0
Recurring | Level 2
Assets
Securities available for sale, at fair value	4,238,082,000	4,783,579,000
Mortgage loans held for sale	255,276,000	107,734,000
Mortgage loans held for investment, at fair value option	0	0
Derivative instruments	136,235,000	27,048,000
Total	4,629,593,000	4,918,361,000
Liabilities
Derivative instruments	10,851,000	22,124,000
Total	10,851,000	22,124,000
Recurring | Level 3
Assets
Securities available for sale, at fair value	0	0
Mortgage loans held for sale	0	0
Mortgage loans held for investment, at fair value option	4,138,000	3,143,000
Derivative instruments	0	0
Total	4,138,000	3,143,000
Liabilities
Derivative instruments	0	0
Total	$ 0	$ 0

XML

Fair Value of Financial Instruments - Estimated Fair Values and Carrying Amounts of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Financial Assets
Securities available for sale, at fair value	$ 4,238,082	$ 4,783,579
Mortgage loans held for sale, at fair value	255,276	107,734
Mortgage loans held for investment, at fair value option	4,138	3,143
Derivative instruments	136,235	27,048
Cash and cash equivalents	930,933	690,453
Securities held to maturity	185,007	207,446
Financial Liabilities
Derivative instruments	10,851	22,124
Deposits	24,977,285	23,763,431	$ 23,193,446
Short-term borrowings	498,049	1,482,882
Long-term debt	1,394,202	1,166,151
Level 1
Financial Assets
Securities available for sale, at fair value	0	0
Mortgage loans held for sale, at fair value	0	0
Mortgage loans held for investment, at fair value option	0	0
Derivative instruments	0	0
Cash and cash equivalents	930,933	690,453
Securities held to maturity	0	0
Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	0	0
Financial Liabilities
Derivative instruments	0	0
Deposits	0	0
Short-term borrowings	223,049	315,882
Long-term debt	0	0
Level 2
Financial Assets
Securities available for sale, at fair value	4,238,082	4,783,579
Mortgage loans held for sale, at fair value	255,276	107,734
Mortgage loans held for investment, at fair value option	0	0
Derivative instruments	136,235	27,048
Cash and cash equivalents	0	0
Securities held to maturity	192,586	204,277
Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	0	0
Financial Liabilities
Derivative instruments	10,851	22,124
Deposits	24,985,510	23,752,139
Short-term borrowings	275,000	1,167,000
Long-term debt	0	0
Level 3
Financial Assets
Securities available for sale, at fair value	0	0
Mortgage loans held for sale, at fair value	0	0
Mortgage loans held for investment, at fair value option	4,138	3,143
Derivative instruments	0	0
Cash and cash equivalents	0	0
Securities held to maturity	0	0
Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	23,290,286	22,088,236
Financial Liabilities
Derivative instruments	0	0
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	1,391,857	1,154,062
Carrying Amount
Financial Assets
Securities available for sale, at fair value	4,238,082	4,783,579
Mortgage loans held for sale, at fair value	255,276	107,734
Mortgage loans held for investment, at fair value option	4,138	3,143
Derivative instruments	136,235	27,048
Cash and cash equivalents	930,933	690,453
Securities held to maturity	185,007	207,446
Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	23,526,164	22,376,101
Financial Liabilities
Derivative instruments	10,851	22,124
Deposits	24,977,285	23,763,431
Short-term borrowings	498,049	1,482,882
Long-term debt	1,394,202	1,166,151
Fair Value
Financial Assets
Securities available for sale, at fair value	4,238,082	4,783,579
Mortgage loans held for sale, at fair value	255,276	107,734
Mortgage loans held for investment, at fair value option	4,138	3,143
Derivative instruments	136,235	27,048
Cash and cash equivalents	930,933	690,453
Securities held to maturity	192,586	204,277
Loans and leases, carried at amortized cost, net of unearned income and allowance for loan and lease losses	23,290,286	22,088,236
Financial Liabilities
Derivative instruments	10,851	22,124
Deposits	24,985,510	23,752,139
Short-term borrowings	498,049	1,482,882
Long-term debt	$ 1,391,857	$ 1,154,062

XML

Share-Based Compensation - Narrative (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future awards shares under approved incentive compensation plans	3,450,647
Share-based compensation maximum option term (in years)	10 years
Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned share-based compensation associated with awards	$ 2.4
Unrecognized compensation cost related to stock options expected to be recognized over a weighted-average period	2 years 8 months 12 days
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned share-based compensation associated with awards	$ 24.3	$ 30.9
Unrecognized compensation cost related to stock options expected to be recognized over a weighted-average period	1 year 3 months 18 days
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Phantom Stock Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	5 years

XML

Share-Based Compensation - Unvested Restricted Stock Award Activity (Detail) - Restricted Stock And Restricted Stock Units - shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of the period (in shares)	700,628,000	738,187,000
Granted (in shares)	217,078,000	229,181,000
Forfeited (in shares)	(18,955,000)	(70,981,000)
Vested (in shares)	(248,047,000)	(192,217,000)
Balance at end of the period (in shares)	650,704,000	704,170,000

XML

Commitments and Contingencies - Summary of Financial Instruments Outstanding (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments to extend credit	$ 883,615	$ 642,162
Unfunded commitments under lines of credit	7,252,052	6,883,963
Commercial and standby letters of credit	215,664	240,436
Reserve for unfunded lending commitments	$ 16,144	$ 14,830	$ 14,721	$ 13,208

XML

Derivative Instruments and Other Hedging Activities

9 Months Ended

Sep. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Other Hedging Activities

DERIVATIVE INSTRUMENTS AND OTHER HEDGING ACTIVITIES

The Company enters into derivative financial instruments to manage interest rate risk, exposures related to liquidity and credit risk, and to facilitate customer transactions. The primary types of derivatives utilized by the Company for its risk management strategies include interest rate swap agreements, interest rate collars, interest rate floors, foreign exchange contracts, interest rate lock commitments, forward sales commitments, written and purchased options, and credit derivatives. All derivative instruments are recognized on the consolidated balance sheets as other assets or other liabilities at fair value, regardless of whether a right of offset exists.

Cash flow hedge relationships mitigate exposure to the variability of future cash flows or other forecasted transactions. The Company enters into interest rate swap agreements in a cash flow hedge to convert forecasted variable interest payments to a fixed rate on its junior subordinated debt. In addition, the Company has entered into interest rate collars and interest rate floors and designated the instruments as cash flow hedges of the risk of fluctuations in interest rates, thereby reducing the Company's exposure to variability in cash flows from variable-rate loans.

For cash flow hedges, the effective and ineffective portions of the gain or loss related to the derivative instrument is initially reported as a component of other comprehensive income and subsequently reclassified into earnings when the forecasted transaction affects earnings or when the hedge is terminated. In applying hedge accounting for derivatives, the Company establishes and documents a method for assessing the effectiveness of the hedging derivative and a measurement approach for determining the ineffective aspect of the hedge upon the inception of the hedge.

For derivative instruments that are not designated as hedging instruments, changes in the fair value of the derivatives are recognized in earnings immediately.

Information pertaining to outstanding derivative instruments was as follows:

	Derivative Assets - Fair Value				Derivative Liabilities - Fair Value
(in thousands)	September 30, 2019		December 31, 2018		September 30, 2019		December 31, 2018
Derivatives designated as hedging instruments:
Interest rate contracts	$	23,339	$	3,469	$	—	$	—
Total derivatives designated as hedging instruments	$	23,339	$	3,469	$	—	$	—
Derivatives not designated as hedging instruments:
Interest rate contracts:
Customer swaps - upstream	$	12	$	474	$	6,104	$	191
Customer swaps - downstream	104,779		16,946		206		17,812
Foreign exchange contracts	—		18		—		18
Forward sales contracts	485		630		654		750
Written and purchased options	7,549		5,490		3,695		3,310
Other contracts	71		21		192		43
Total derivatives not designated as hedging instruments	$	112,896	$	23,579	$	10,851	$	22,124
Total	$	136,235	$	27,048	$	10,851	$	22,124

	Derivative Assets - Notional Amount				Derivative Liabilities - Notional Amount
(in thousands)	September 30, 2019		December 31, 2018		September 30, 2019		December 31, 2018
Derivatives designated as hedging instruments:
Interest rate contracts	$	800,000	$	408,500	$	108,500	$	—
Total derivatives designated as hedging instruments	$	800,000	$	408,500	$	108,500	$	—
Derivatives not designated as hedging instruments:
Interest rate contracts:
Customer swaps - upstream	$	142,425	$	919,653	$	2,259,248	$	701,257
Customer swaps - downstream	2,259,248		701,257		142,425		919,653
Foreign exchange contracts	—		1,202		—		1,202
Forward sales contracts	144,368		1,140		211,049		143,179
Written and purchased options	339,569		229,333		128,150		140,645
Other contracts	74,085		50,527		145,443		85,623
Total derivatives not designated as hedging instruments	$	2,959,695	$	1,903,112	$	2,886,315	$	1,991,559
Total	$	3,759,695	$	2,311,612	$	2,994,815	$	1,991,559

The Company has entered into risk participation agreements with counterparties to transfer or assume credit exposures related to interest rate derivatives. The notional amounts of risk participation agreements sold were $145.4 million and $85.6 million at September 30, 2019 and December 31, 2018, respectively. Assuming all underlying third party customers referenced in the swap contracts defaulted at September 30, 2019 and December 31, 2018, the exposure from these agreements would not be material based on the fair value of the underlying swaps.

The Company is party to collateral agreements with certain derivative counterparties. Such agreements require that the Company maintain collateral based on the fair values of individual derivative transactions. In the event of default by the Company, the counterparty would be entitled to the collateral.

At September 30, 2019 and December 31, 2018, the Company was not required to post collateral due to the Company's derivative position at the balance sheet date. At September 30, 2019 and December 31, 2018, the Company was required to post $106.5 million and $35.8 million, respectively, in variation margin payments for its derivative transactions, which is required to be netted against the fair value of the derivatives in other assets or other liabilities on the consolidated balance sheets. The Company does not anticipate additional assets will be required to be posted as collateral, nor does it believe additional assets would be required to settle its derivative instruments immediately if contingent features were triggered at September 30, 2019. The Company’s master netting agreements represent written, legally enforceable bilateral agreements that (1) create a single legal obligation for all individual transactions covered by the master agreement and (2) in the event of default, provide the non-defaulting counterparty the right to accelerate, terminate, and close-out on a net basis all transactions under the agreement and to promptly liquidate or set-off collateral posted by the defaulting counterparty. As permitted by GAAP, the Company does not offset fair value amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral against recognized fair value amounts of derivatives executed with the same counterparty under a master netting agreement.

The following table reconciles the gross amounts presented in the consolidated balance sheets to the net amounts that would result in the event of offset.

	September 30, 2019
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet					Net
(in thousands)			Derivatives			Collateral
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	23,338	$	—		$	—	$	23,338
Interest rate contracts not designated as hedging instruments	104,791		(6,119		)	—		98,672
Written and purchased options	3,581		—			—		3,581
Total derivative assets subject to master netting arrangements	$	131,710	$	(6,119	)	$	—	$	125,591
Derivative liabilities
Interest rate contracts not designated as hedging instruments	$	6,310	$	(6,119	)	$	—	$	191
Written and purchased options	3,581		—			—		3,581
Total derivative liabilities subject to master netting arrangements	$	9,891	$	(6,119	)	$	—	$	3,772

	December 31, 2018
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet					Net
(in thousands)			Derivatives			Collateral
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	3,469	$	—		$	—	$	3,469
Interest rate contracts not designated as hedging instruments	17,420		(619		)	—		16,801
Written and purchased options	3,285		—			—		3,285
Total derivative assets subject to master netting arrangements	$	24,174	$	(619	)	$	—	$	23,555
Derivative liabilities
Interest rate contracts not designated as hedging instruments	$	18,003	$	(619	)	$	—	$	17,384
Written and purchased options	3,285		—			—		3,285
Total derivative liabilities subject to master netting arrangements	$	21,288	$	(619	)	$	—	$	20,669

During the three and nine months ended September 30, 2019 and 2018, the Company did not reclassify into earnings any gain or loss as a result of the discontinuance of cash flow hedges because it was probable the original forecasted transaction would not occur by the end of the originally specified term.

At September 30, 2019, the Company did not expect to reclassify a material amount from accumulated other comprehensive income into interest income over the next twelve months for derivatives that will be settled.

At September 30, 2019 and 2018, and for the three and nine months then ended, information pertaining to the effect of the hedging instruments on the consolidated financial statements was as follows:

		Amount of Gain (Loss) Recognized in OCI, net of taxes								Location of Gain (Loss) Reclassified from AOCI into Income	Amount of Gain (Loss) Reclassified from AOCI into Income, net of taxes									Location of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)
		Total			Including Component		Excluding Component				Total			Including Component			Excluding Component				Total		Including Component		Excluding Component
(in thousands)		For the Three Months Ended September 30,
Derivatives in Cash Flow Hedging Relationships		2019									2019										2019
	Interest rate contracts	$	(264	)	$	312	$	(576	)	Interest expense	$	(162	)	$	102		$	(264	)	Interest expense	$	—	$	—	$	—
		2018									2018										2018
	Interest rate contracts	$	818		$	818	$	—		Interest expense	$	(22	)	$	(22	)	$	—		Interest expense	$	—	$	—	$	—

		Amount of Gain (Loss) Recognized in OCI, net of taxes							Location of Gain (Loss) Reclassified from AOCI into Income	Amount of Gain (Loss) Reclassified from AOCI into Income, net of taxes									Location of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivatives (Amount Excluded from Effectiveness Testing)
		Total		Including Component		Excluding Component				Total			Including Component			Excluding Component				Total		Including Component		Excluding Component
(in thousands)		For the Nine Months Ended September 30,
Derivatives in Cash Flow Hedging Relationships		2019								2019										2019
	Interest rate contracts	$	1,992	$	3,196	$	(1,204	)	Interest expense	$	(467	)	$	212		$	(679	)	Interest expense	$	—	$	—	$	—
		2018								2018										2018
	Interest rate contracts	$	4,762	$	4,762	$	—		Interest expense	$	(178	)	$	(178	)	$	—		Interest expense	$	—	$	—	$	—

Information pertaining to the effect of derivatives not designated as hedging instruments on the consolidated financial statements as of September 30, was as follows:

	Location of Gain (Loss) Recognized in Income on Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives
		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(in thousands)		2019			2018			2019			2018
Interest rate contracts (1)	Commission income	$	4,067		$	2,586		$	10,761		$	5,093
Foreign exchange contracts	Other income	8			7			14			17
Forward sales contracts	Mortgage income	(1,765		)	948			(8,085		)	4,563
Written and purchased options	Mortgage income	(1,848		)	(692		)	1,675			473
Other contracts	Other income	(72		)	1			(99		)	(4		)
Total		$	390		$	2,850		$	4,266		$	10,142

^{(1) Includes fees associated with customer interest rate contracts.}

XML

Investment Securities

9 Months Ended

Sep. 30, 2019

Investments, Debt and Equity Securities [Abstract]

Investment Securities

INVESTMENT SECURITIES

The amortized cost and fair values of investment securities, with gross unrealized gains and losses, consisted of the following:

	September 30, 2019
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	39,887	$	294	$	—		$	40,181
Obligations of state and political subdivisions	166,034		7,333		—			173,367
Mortgage-backed securities:
Residential agency	3,135,619		31,354		(3,930		)	3,163,043
Commercial agency	732,669		24,239		(179		)	756,729
Other securities	101,324		3,543		(105		)	104,762
Total securities available for sale	$	4,175,533	$	66,763	$	(4,214	)	$	4,238,082
Securities held to maturity:
Obligations of state and political subdivisions	$	167,888	$	7,725	$	—		$	175,613
Mortgage-backed securities:
Residential agency	17,119		50		(196		)	16,973
Total securities held to maturity	$	185,007	$	7,775	$	(196	)	$	192,586

	December 31, 2018
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	995	$	3	$	—		$	998
Obligations of state and political subdivisions	177,566		2,045		(723		)	178,888
Mortgage-backed securities:
Residential agency	3,837,584		8,886		(57,073		)	3,789,397
Commercial agency	730,148		2,363		(14,799		)	717,712
Other securities	97,020		351		(787		)	96,584
Total securities available for sale	$	4,843,313	$	13,648	$	(73,382	)	$	4,783,579
Securities held to maturity:
Obligations of state and political subdivisions	$	188,684	$	309	$	(2,497	)	$	186,496
Mortgage-backed securities:
Residential agency	18,762		30		(1,011		)	17,781
Total securities held to maturity	$	207,446	$	339	$	(3,508	)	$	204,277

Securities with carrying values of $2.1 billion and $2.4 billion were pledged to support repurchase transactions, public funds deposits, and certain long-term borrowings at September 30, 2019 and December 31, 2018, respectively.

Information pertaining to securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, was as follows:

	September 30, 2019
	Less Than Twelve Months					Twelve Months or More					Total
(in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
Mortgage-backed securities:
Residential agency	$	(1,829	)	$	447,333	$	(2,101	)	$	299,396	$	(3,930	)	$	746,729
Commercial agency	(83		)	8,961		(96		)	10,994		(179		)	19,955
Other securities	(6		)	13,368		(99		)	4,802		(105		)	18,170
Total securities available for sale	$	(1,918	)	$	469,662	$	(2,296	)	$	315,192	$	(4,214	)	$	784,854
Securities held to maturity:
Mortgage-backed securities:
Residential agency	$	(2	)	$	924	$	(194	)	$	9,551	$	(196	)	$	10,475
Total securities held to maturity	$	(2	)	$	924	$	(194	)	$	9,551	$	(196	)	$	10,475

	December 31, 2018
	Less Than Twelve Months					Twelve Months or More					Total
(in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
Obligations of state and political subdivisions	$	(9	)	$	4,112	$	(714	)	$	30,268	$	(723	)	$	34,380
Mortgage-backed securities:
Residential agency	(816		)	197,057		(56,257		)	2,193,862		(57,073		)	2,390,919
Commercial agency	(43		)	18,190		(14,756		)	483,565		(14,799		)	501,755
Other securities	(94		)	18,025		(693		)	32,577		(787		)	50,602
Total securities available for sale	$	(962	)	$	237,384	$	(72,420	)	$	2,740,272	$	(73,382	)	$	2,977,656
Securities held to maturity:
Obligations of state and political subdivisions	$	(3	)	$	2,059	$	(2,494	)	$	151,699	$	(2,497	)	$	153,758
Mortgage-backed securities:
Residential agency	—			—		(1,011		)	17,478		(1,011		)	17,478
Total securities held to maturity	$	(3	)	$	2,059	$	(3,505	)	$	169,177	$	(3,508	)	$	171,236

The Company held certain investment securities where amortized cost exceeded fair value, resulting in unrealized loss positions, as shown in the tables above. Management evaluates securities for other-than-temporary impairment on at least a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Impairment is considered to be other-than-temporary if the Company (1) intends to sell the security, (2) more likely than not will be required to sell the security before recovering its cost, or (3) does not expect to recover the security's entire amortized cost basis. As of September 30, 2019, the Company did not intend to sell any of these securities, did not expect to be required to sell these securities, and expected to recover the entire amortized cost of all these securities.

At September 30, 2019, 107 debt securities had unrealized losses of 0.55% of the securities’ amortized cost basis. At December 31, 2018, 488 debt securities had unrealized losses of 2.38% of the securities’ amortized cost basis. The unrealized losses for each of the securities related to market interest rate changes and not credit concerns of the issuers. Additional information on securities that were in a continuous loss position for over twelve months at September 30, 2019 and December 31, 2018 is presented in the following table.

(in thousands)	September 30, 2019		December 31, 2018
Number of securities
Mortgage-backed securities:
Residential agency	66		302
Commercial agency	6		72
Obligations of state and political subdivisions	—		60
Other securities	4		7
	76		441
Amortized Cost Basis
Mortgage-backed securities:
Residential agency	$	311,242	$	2,268,608
Commercial agency	11,090		498,321
Obligations of state and political subdivisions	—		185,175
Other securities	4,901		33,270
	$	327,233	$	2,985,374
Unrealized Loss
Mortgage-backed securities:
Residential agency	$	2,295	$	57,268
Commercial agency	96		14,756
Obligations of state and political subdivisions	—		3,208
Other securities	99		693
	$	2,490	$	75,925

The amortized cost and estimated fair value of investment securities by maturity at September 30, 2019 are presented in the following table. Securities are classified according to their contractual maturities without consideration of principal amortization, potential prepayments or call options. Accordingly, actual maturities may differ from contractual maturities. Weighted average yields are calculated on the basis of the yield to maturity based on the amortized cost of each security.

	Securities Available for Sale						Securities Held to Maturity
(in thousands)	Weighted Average Yield		Amortized Cost		Estimated Fair Value		Weighted Average Yield		Amortized Cost		Estimated Fair Value
Within one year or less	2.55	%	$	10,720	$	10,787	2.33	%	$	948	$	949
One through five years	2.62		123,447		125,721		2.63		4,483		4,518
After five through ten years	2.76		760,325		786,040		2.35		43,085		44,653
Over ten years	2.67		3,281,041		3,315,534		2.58		136,491		142,466
	2.68	%	$	4,175,533	$	4,238,082	2.53	%	$	185,007	$	192,586

The following is a summary of realized gains and losses from the sale of securities classified as available for sale. Gains or losses on securities sold are recorded on the trade date, using the specific identification method.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2019		2018		2019			2018
Realized gains	$	27	$	—	$	1,324		$	39
Realized losses	—		—		(2,311		)	(95		)
	$	27	$	—	$	(987	)	$	(56	)

In addition to the gains above, the Company realized certain gains on calls of securities held to maturity that were not significant to the consolidated financial statements.

Other Equity Securities

The Company accounts for the following securities at cost less impairment plus or minus any observable price changes, which approximates fair value, with the exception of CRA and Community Development Investment Funds, which are recorded at fair value. Other equity securities, which are presented in other assets on the consolidated balance sheets, were as follows:

(in thousands)	September 30, 2019		December 31, 2018
Federal Home Loan Bank stock	$	87,156	$	95,213
Federal Reserve Bank stock	85,630		85,630
CRA and Community Development Investment Funds	1,962		1,884
Other investments	21,023		9,709
	$	195,771	$	192,436

XML

Share-Based Compensation

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement [Abstract]

Share-Based Compensation

SHARE-BASED COMPENSATION

The Company has various types of share-based compensation plans that permit the granting of awards in the form of stock options, restricted stock, restricted share units and phantom stock. These plans are administered by the Compensation Committee of the Board of Directors, which selects persons eligible to receive awards and determines the terms, conditions and other provisions of the awards. At September 30, 2019, awards of 3,450,647 shares could be made under approved incentive compensation plans. The Company issues shares to fulfill stock option exercises and restricted share units and restricted stock awards vesting from available authorized common shares. At September 30, 2019, the Company believes there are adequate authorized shares to satisfy anticipated stock option exercises and restricted share unit and restricted stock award vesting.

Stock option awards

The Company issues stock options under various plans to directors, officers and other key employees. The option exercise price cannot be less than the fair value of the underlying common stock as of the date of the option grant and the maximum option term cannot exceed ten years.

The following table represents the activity related to stock options during the periods indicated:

	Number of Shares		Weighted Average Exercise Price
Outstanding options, December 31, 2017	686,366		$	58.24
Granted	97,620		82.02
Exercised	(41,697	)	53.12
Forfeited or expired	(27,328	)	68.19
Outstanding options, September 30, 2018	714,961		$	61.41
Exercisable options, September 30, 2018	500,349		$	56.70
Outstanding options, December 31, 2018	714,420		$	61.41
Granted	127,090		70.34
Exercised	(50,375	)	52.99
Forfeited or expired	(12,227	)	72.79
Outstanding options, September 30, 2019	778,908		$	63.23
Exercisable options, September 30, 2019	533,784		$	58.60

The Company uses the Black-Scholes option pricing model to estimate the fair value of stock option awards. The following weighted-average assumptions were used for option awards issued during the following periods:

	For the Nine Months Ended September 30,
	2019			2018
Expected dividends	2.3		%	1.8		%
Expected volatility	24.5		%	24.3		%
Risk-free interest rate	2.5		%	2.7		%
Expected term (in years)	5.7			5.8
Weighted-average grant-date fair value	$	14.44		$	18.48

The assumptions above are based on multiple factors, including historical stock option exercise patterns and post-vesting employment termination behaviors, expected future exercise patterns and the expected volatility of the Company’s stock price.

The following table represents the compensation expense that is included in non-interest expense and related income tax benefits in the accompanying consolidated statements of comprehensive income related to stock options for the following periods:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to stock options	$	373	$	321	$	1,058	$	952
Income tax benefit related to stock options	28		23		78		70

At September 30, 2019, there was $2.4 million of unrecognized compensation expense related to stock options that is expected to be recognized over a weighted-average period of 2.7 years.

Restricted stock awards

The Company issues restricted stock under various plans for certain officers and directors. The restricted stock awards may not be sold or otherwise transferred until certain restrictions have lapsed. The holders of the restricted stock receive dividends and have the right to vote the shares. The compensation expense for these awards is determined based on the market price of the Company's common stock at the date of grant applied to the total number of shares granted and is recognized over the vesting period (generally three to five years). As of September 30, 2019 and 2018, unrecognized share-based compensation expense associated with these awards totaled $24.3 million and $30.9 million, respectively. The unrecognized compensation expense related to restricted stock awards at September 30, 2019 is expected to be recognized over a weighted-average period of 1.3 years.

Restricted share units

The Company issues restricted share units to certain of its executive officers. Restricted share units vest after the end of a three year performance period, based on satisfaction of the market and performance conditions set forth in the restricted share unit agreements. Recipients do not possess voting or investment power over the common stock underlying such units until vesting. The grant date fair value of these restricted share units is the same as the value of the corresponding number of shares of common stock, adjusted for assumptions surrounding the market-based conditions contained in the respective agreements. See Note 1, Summary of Significant Accounting Policies, in the 2018 Annual Report on Form 10-K for the year ended December 31, 2018, for further discussion of restricted share units with market or performance conditions.

The following table represents the compensation expense that was included in non-interest expense and related income tax benefits in the accompanying consolidated statements of comprehensive income related to restricted stock awards and restricted share units for the periods indicated:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to restricted stock awards and restricted share units	$	5,088	$	4,843	$	16,242	$	14,192
Income tax benefit related to restricted stock awards and restricted share units	1,068		1,017		3,411		2,980

The following table represents unvested restricted stock award and restricted share unit activity for the following periods:

	For the Nine Months Ended September 30,
	2019		2018
Number of shares at beginning of period	700,628		738,187
Granted	217,078		229,181
Forfeited	(18,955	)	(70,981	)
Vested	(248,047	)	(192,217	)
Number of shares at end of period	650,704		704,170

Phantom stock awards

The Company issues phantom stock awards to certain key officers and employees. The awards are subject to a vesting period of five years and are paid out in cash upon vesting. The amount paid per vesting period is calculated as the number of vested “share equivalents” multiplied by the closing market price of a share of the Company’s common stock on the vesting date. Share equivalents are calculated on the date of grant as the total award’s dollar value divided by the closing market price of a share of the Company’s common stock on the grant date.

The following table represents compensation expense recorded for phantom stock based on the number of share equivalents vested at September 30 of the periods indicated and the current market price of the Company’s stock at that time:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Compensation expense related to phantom stock	$	2,257	$	2,375	$	7,902	$	7,388

The following table represents phantom stock award activity during the periods indicated:

(in thousands)	Number of share equivalents (1)		Value of share equivalents (2)
Balance, December 31, 2017	393,844		$	30,523
Granted	151,908		12,358
Forfeited share equivalents	(59,550	)	4,844
Vested share equivalents	(130,497	)	10,871
Balance, September 30, 2018	355,705		$	28,937
Balance, December 31, 2018	353,407		$	22,717
Granted	183,879		13,890
Forfeited share equivalents	(30,283	)	2,288
Vested share equivalents	(107,592	)	8,116
Balance, September 30, 2019	399,411		$	30,171

⁽¹⁾  Number of share equivalents includes all reinvested dividend equivalents for the periods indicated.

⁽²⁾ 

Except for share equivalents at the beginning of each period, which are based on the value at that time, and vested share payments, which are based on the cash paid at the time of vesting, the value of share equivalents is calculated based on the market price of the Company’s stock at the end of the respective periods. The market price of the Company’s stock was $75.54 and $81.35 on September 30, 2019, and 2018, respectively.

XML

Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Assets And Liabilities, Leases

The following summarizes the ROU asset and lease liabilities as of September 30, 2019:

(in thousands)	September 30, 2019
Right-of-use assets	$	112,156
Lease liabilities	131,800
Weighted average remaining lease term	7.95
Weighted average discount rate	3.14		%

Lessee, Operating Lease, Liability, Maturity

Maturities of operating lease liabilities as of September 30, 2019 were as follows:

(in thousands)
2019	$	6,732
2020	25,895
2021	23,847
2022	21,414
2023	16,659
2024 and thereafter	55,296
Total operating lease payments	$	149,843
Less: Imputed interest	18,043
Total lease liabilities	$	131,800

Lessor, Net Investment in in Leases

The components of the Company’s net investment in leases were as follows:

(in thousands)	September 30, 2019
Lease payment receivable	$	363,224
Unguaranteed residual assets	34,991
Total net investment in leases	$	398,215

Sales-type and Direct Financing Leases, Lease Receivable, Maturity

Maturities of the Company's lease receivables as of September 30, 2019 were as follows:

(in thousands)
2019	$	21,480
2020	82,993
2021	68,163
2022	62,809
2023	48,670
2024 and thereafter	90,277
Total future minimum lease payments	$	374,392
Less: Imputed interest	11,168
Lease receivables	$	363,224

XML

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Financial Asset and Liabilities Measured at Fair Value on Recurring Basis

The following table presents information about the Company's assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2019 and December 31, 2018 and their classification within the fair value hierarchy. See Note 1, Summary of Significant Accounting Policies, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

	September 30, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Securities available for sale	$	—	$	4,238,082	$	—	$	4,238,082
Mortgage loans held for sale	—		255,276		—		255,276
Mortgage loans held for investment, at fair value option	—		—		4,138		4,138
Derivative instruments	—		136,235		—		136,235
Total	$	—	$	4,629,593	$	4,138	$	4,633,731
Liabilities
Derivative instruments	$	—	$	10,851	$	—	$	10,851
Total	$	—	$	10,851	$	—	$	10,851
	December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets
Securities available for sale	$	—	$	4,783,579	$	—	$	4,783,579
Mortgage loans held for sale	—		107,734		—		107,734
Mortgage loans held for investment, at fair value option	—		—		3,143		3,143
Derivative instruments	—		27,048		—		27,048
Total	$	—	$	4,918,361	$	3,143	$	4,921,504
Liabilities
Derivative instruments	$	—	$	22,124	$	—	$	22,124
Total	$	—	$	22,124	$	—	$	22,124

Financial Asset and Liabilities Measured at Fair Value on Nonrecurring Basis

The Company holds certain assets that are measured at fair value only in certain circumstances, such as impairment. The following table presents information about the Company's assets that are measured at fair value and still held as of September 30, 2019 and December 31, 2018 for which a non-recurring fair value adjustment was recorded during the periods then ended. See Note 1, Summary of Significant Accounting Policies, in the Annual Report on Form 10-K for the year ended December 31, 2018, for a description of how fair value measurements are determined.

	September 30, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Impaired loans	$	—	$	—	$	79,442	$	79,442
OREO, net	—		—		4,008		4,008
Total	$	—	$	—	$	83,450	$	83,450
	December 31, 2018
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Impaired loans	$	—	$	—	$	65,914	$	65,914
OREO, net	—		—		6,433		6,433
Total	$	—	$	—	$	72,347	$	72,347

Summary of Difference Between the Aggregate Fair Value and the Aggregate Unpaid Principal Balance for Mortgage Loans Held for Sale

The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for mortgage loans held for sale and mortgage loans held for investment measured at fair value:

	September 30, 2019							December 31, 2018
(in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal		Aggregate Fair Value Less Unpaid Principal			Aggregate Fair Value		Aggregate Unpaid Principal		Aggregate Fair Value Less Unpaid Principal
Mortgage loans held for sale, at fair value	$	255,276	$	248,256	$	7,020		$	107,734	$	104,345	$	3,389
Mortgage loans held for investment, at fair value	4,138		4,306		(168		)	3,143		3,595		(452		)

Fair Value Option, Disclosures

The following table details net gains (losses) resulting from the change in fair value of loans that were recorded in mortgage income in the consolidated statements of comprehensive income for the three and nine months ended September 30, 2019 and 2018. The changes in fair value are mostly offset by economic hedging activities, with an insignificant portion of these changes attributable to changes in instrument-specific credit risk.

	Net Gains (Losses) Resulting From Changes in Fair Value
	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(in thousands)	2019			2018			2019		2018
Fair value option
Mortgage loans held for sale, at fair value	$	100		$	(1,041	)	$	3,631	$	(2,513	)
Mortgage loans held for investment, at fair value	(14		)	(296		)	73		(1,217		)

XML

Allowance for Credit Losses and Credit Quality - Schedule of Investment in Legacy Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired
Unpaid Principal Balance	$ 227,102		$ 227,102		$ 209,746
Recorded Investment	205,395		205,395		169,725
Related allowance	(14,015)		(14,015)		(16,342)
Average Recorded Investment	212,055	$ 197,593	207,955	$ 201,997
Interest Income Recognized	1,460	1,829	4,845	5,852
Commercial Loans
Financing Receivable, Impaired
Unpaid Principal Balance	144,093		144,093		164,209
Recorded Investment	125,065		125,065		125,706
Related allowance	(10,695)		(10,695)		(13,282)
Average Recorded Investment	130,634	157,333	131,217	162,163
Interest Income Recognized	846	1,398	3,011	4,551
Residential mortgage loans
Financing Receivable, Impaired
Unpaid Principal Balance	44,192		44,192		7,114
Recorded Investment	42,423		42,423		6,579
Related allowance	(281)		(281)		(145)
Average Recorded Investment	43,310	6,268	38,817	6,337
Interest Income Recognized	210	59	623	185
Consumer and Other Loans
Financing Receivable, Impaired
Unpaid Principal Balance	38,817		38,817		38,423
Recorded Investment	37,907		37,907		37,440
Related allowance	(3,039)		(3,039)		(2,915)
Average Recorded Investment	38,111	33,992	37,921	33,497
Interest Income Recognized	404	372	1,211	1,116
With No Related Allowance Recorded | Commercial Loans | Real estate - construction
Financing Receivable, Impaired
Unpaid Principal Balance	9,540		9,540		10,261
Recorded Investment	8,531		8,531		9,262
Average Recorded Investment	7,333	10,806	7,145	10,371
Interest Income Recognized	82	164	242	460
With No Related Allowance Recorded | Commercial Loans | Real estate - owner-occupied
Financing Receivable, Impaired
Unpaid Principal Balance	33,985		33,985		25,037
Recorded Investment	33,590		33,590		19,044
Average Recorded Investment	33,895	34,118	34,437	34,505
Interest Income Recognized	355	209	1,235	903
With No Related Allowance Recorded | Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Impaired
Unpaid Principal Balance	23,964		23,964		15,265
Recorded Investment	22,652		22,652		14,288
Average Recorded Investment	22,794	22,091	22,910	22,988
Interest Income Recognized	72	249	301	746
With No Related Allowance Recorded | Commercial Loans | Commercial and industrial
Financing Receivable, Impaired
Unpaid Principal Balance	21,813		21,813		55,554
Recorded Investment	17,771		17,771		43,886
Average Recorded Investment	20,594	43,409	20,727	40,564
Interest Income Recognized	108	523	401	1,543
With No Related Allowance Recorded | Commercial Loans | Residential mortgage
Financing Receivable, Impaired
Unpaid Principal Balance	36,182		36,182		1,244
Recorded Investment	35,089		35,089		1,221
Average Recorded Investment	35,896	1,254	31,315	1,271
Interest Income Recognized	136	9	391	36
With No Related Allowance Recorded | Consumer and Other Loans | Consumer - Home equity
Financing Receivable, Impaired
Unpaid Principal Balance	4,736		4,736		4,183
Recorded Investment	4,734		4,734		4,176
Average Recorded Investment	4,736	705	4,613	708
Interest Income Recognized	47	2	137	16
With An Allowance Recorded | Commercial Loans | Real estate - construction
Financing Receivable, Impaired
Unpaid Principal Balance	98		98		228
Recorded Investment	85		85		140
Related allowance	(1)		(1)		(11)
Average Recorded Investment	87	148	93	151
Interest Income Recognized	0	0	0	1
With An Allowance Recorded | Commercial Loans | Real estate - owner-occupied
Financing Receivable, Impaired
Unpaid Principal Balance	5,135		5,135		5,032
Recorded Investment	4,921		4,921		4,773
Related allowance	(2,529)		(2,529)		(520)
Average Recorded Investment	4,952	4,006	5,050	4,044
Interest Income Recognized	10	83	113	102
With An Allowance Recorded | Commercial Loans | Real estate - non-owner-occupied
Financing Receivable, Impaired
Unpaid Principal Balance	4,149		4,149		6,445
Recorded Investment	3,936		3,936		6,398
Related allowance	(191)		(191)		(105)
Average Recorded Investment	4,155	2,398	4,090	2,442
Interest Income Recognized	46	20	137	76
With An Allowance Recorded | Commercial Loans | Commercial and industrial
Financing Receivable, Impaired
Unpaid Principal Balance	45,409		45,409		46,387
Recorded Investment	33,579		33,579		27,915
Related allowance	(7,974)		(7,974)		(12,646)
Average Recorded Investment	36,824	40,357	36,765	47,098
Interest Income Recognized	173	150	582	720
With An Allowance Recorded | Residential mortgage loans | Residential mortgage
Financing Receivable, Impaired
Unpaid Principal Balance	8,010		8,010		5,870
Recorded Investment	7,334		7,334		5,358
Related allowance	(281)		(281)		(145)
Average Recorded Investment	7,414	5,014	7,502	5,066
Interest Income Recognized	74	50	232	149
With An Allowance Recorded | Consumer and Other Loans | Consumer - Home equity
Financing Receivable, Impaired
Unpaid Principal Balance	29,773		29,773		29,284
Recorded Investment	29,124		29,124		28,818
Related allowance	(2,577)		(2,577)		(2,427)
Average Recorded Investment	29,200	28,577	28,982	27,905
Interest Income Recognized	298	305	890	892
With An Allowance Recorded | Consumer and Other Loans | Consumer - Other
Financing Receivable, Impaired
Unpaid Principal Balance	4,308		4,308		4,956
Recorded Investment	4,049		4,049		4,446
Related allowance	(462)		(462)		$ (488)
Average Recorded Investment	4,175	4,710	4,326	4,884
Interest Income Recognized	$ 59	$ 65	$ 184	$ 208

XML

Loans and Leases - Schedule of Subsequently Defaulted TDRs (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) SecurityLoan	Sep. 30, 2018 USD ($) SecurityLoan	Sep. 30, 2019 USD ($) SecurityLoan	Sep. 30, 2018 USD ($) SecurityLoan
Accounts, Notes, Loans and Financing Receivable
Threshold period for loans in default (in days)			30 days
TDRs | TDRs Occurring during the Period
Accounts, Notes, Loans and Financing Receivable
Number of Loans | SecurityLoan	74	45	236	163
Pre-modification Outstanding Recorded Investment	$ 28,561	$ 6,720	$ 71,162	$ 59,322
Post-modification Outstanding Recorded Investment	$ 28,738	$ 6,537	$ 61,028	$ 45,954
Number of loans | SecurityLoan	17	14	124	88
Recorded investment	$ 4,111	$ 1,529	$ 17,084	$ 18,195
TDRs | Commercial Loans | Real estate - construction | TDRs Occurring during the Period
Accounts, Notes, Loans and Financing Receivable
Number of Loans | SecurityLoan	1	0	1	1
Pre-modification Outstanding Recorded Investment	$ 6,331	$ 0	$ 6,331	$ 1,950
Post-modification Outstanding Recorded Investment	$ 7,602	$ 0	$ 7,602	$ 976
TDRs | Commercial Loans | Real estate - owner-occupied | TDRs Occurring during the Period
Accounts, Notes, Loans and Financing Receivable
Number of Loans | SecurityLoan	7	1	11	8
Pre-modification Outstanding Recorded Investment	$ 8,936	$ 2,312	$ 10,153	$ 15,233
Post-modification Outstanding Recorded Investment	$ 8,691	$ 2,312	$ 9,869	$ 13,373
Number of loans | SecurityLoan	0	1	6	6
Recorded investment	$ 0	$ 929	$ 1,225	$ 10,101
TDRs | Commercial Loans | Real estate - non-owner-occupied | TDRs Occurring during the Period
Accounts, Notes, Loans and Financing Receivable
Number of Loans | SecurityLoan	6	6	16	13
Pre-modification Outstanding Recorded Investment	$ 1,553	$ 1,818	$ 7,931	$ 3,228
Post-modification Outstanding Recorded Investment	$ 1,210	$ 1,790	$ 7,233	$ 3,064
Number of loans | SecurityLoan	2	1	16	6
Recorded investment	$ 2,460	$ 7	$ 5,176	$ 1,084
TDRs | Commercial Loans | Commercial and industrial | TDRs Occurring during the Period
Accounts, Notes, Loans and Financing Receivable
Number of Loans | SecurityLoan	14	9	48	32
Pre-modification Outstanding Recorded Investment	$ 1,954	$ 829	$ 29,156	$ 32,827
Post-modification Outstanding Recorded Investment	$ 1,952	$ 804	$ 19,594	$ 22,769
Number of loans | SecurityLoan	8	2	25	12
Recorded investment	$ 1,429	$ 127	$ 6,859	$ 3,632
TDRs | Residential mortgage loans | Residential mortgage | TDRs Occurring during the Period
Accounts, Notes, Loans and Financing Receivable
Number of Loans | SecurityLoan	10	3	28	9
Pre-modification Outstanding Recorded Investment	$ 7,210	$ 257	$ 8,897	$ 898
Post-modification Outstanding Recorded Investment	$ 6,870	$ 255	$ 8,524	$ 837
Number of loans | SecurityLoan	1	0	18	8
Recorded investment	$ 101	$ 0	$ 1,394	$ 912
TDRs | Consumer and Other Loans | Consumer - Home equity | TDRs Occurring during the Period
Accounts, Notes, Loans and Financing Receivable
Number of Loans | SecurityLoan	19	15	69	47
Pre-modification Outstanding Recorded Investment	$ 2,375	$ 1,152	$ 7,629	$ 4,130
Post-modification Outstanding Recorded Investment	$ 2,237	$ 1,124	$ 7,268	$ 4,047
Number of loans | SecurityLoan	1	4	21	17
Recorded investment	$ 64	$ 380	$ 1,873	$ 1,978
TDRs | Consumer and Other Loans | Consumer - Other | TDRs Occurring during the Period
Accounts, Notes, Loans and Financing Receivable
Number of Loans | SecurityLoan	17	11	63	53
Pre-modification Outstanding Recorded Investment	$ 202	$ 352	$ 1,065	$ 1,056
Post-modification Outstanding Recorded Investment	$ 176	$ 252	$ 938	$ 888
Number of loans | SecurityLoan	5	6	38	39
Recorded investment	$ 57	$ 86	$ 557	$ 488

XML

Share-Based Compensation - Compensation Expense Included in Non-Interest Expense and Related Income Tax Benefits (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 373	$ 321	$ 1,058	$ 952
Income tax benefit	28	23	78	70
Restricted Stock And Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	5,088	4,843	16,242	14,192
Income tax benefit	1,068	1,017	3,411	2,980
Phantom Stock and Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 2,257	$ 2,375	$ 7,902	$ 7,388

XML

Commitments and Contingencies (Detail) - USD ($) $ in Millions		9 Months Ended
	Dec. 11, 2017	Sep. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Fair value of guarantees under commercial and standby letters of credit		$ 2.2	$ 2.4
Settled Litigation
Loss Contingencies [Line Items]
Settlement amount	$ 11.7
Pending Litigation
Loss Contingencies [Line Items]
Damages sought		$ 11.7

XML

Leases - Direct Finance and Sales Type Leases (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Leases [Abstract]
2019	$ 21,480
2020	82,993
2021	68,163
2022	62,809
2023	48,670
2024 and thereafter	90,277
Total future minimum lease payments	374,392
Less: Imputed interest	11,168
Lease receivables	$ 363,224

XML

Share-Based Compensation - Schedule of Share and Dividend Equivalent Share Award Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Value of share equivalents
Market price of Company's stock (in usd per share)	$ 75.54	$ 81.35
Phantom Stock and Performance Stock Units
Number of share equivalents
Balance at beginning of the period (in shares)	353,407,000	393,844,000
Granted (in shares)	183,879,000	151,908,000
Forfeited share equivalents (in shares)	(30,283,000)	(59,550,000)
Vested share equivalents (in shares)	(107,592,000)	(130,497,000)
Balance at end of the period (in shares)	399,411,000	355,705,000
Value of share equivalents
Balance at beginning of the period (in shares)	$ 22,717	$ 30,523
Granted (in shares)	13,890	12,358
Forfeited share equivalents (in shares)	2,288	4,844
Vested share equivalents (in shares)	8,116	10,871
Balance at end of the period (in shares)	$ 30,171	$ 28,937

XML

Fair Value Measurements - Amount of Net Gains (Losses) from Fair Value Changes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Mortgage loans held for sale, at fair value	$ 100	$ (1,041)	$ 3,631	$ (2,513)
Mortgage loans held for investment, at fair value	$ (14)	$ (296)	$ 73	$ (1,217)

XML

Earnings Per Share - Narrative (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share
Weighted average number of shares held by Recognition and Retention Plan excluded from the calculation for basic shares outstanding	491,977	542,796	525,652	581,397
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from the computation of earnings per share	152,991	60,931	152,991	147,834

XML

Investment Securities - Schedule of Securities with Gross Unrealized Losses Aggregated by Investment Category (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Gross Unrealized Losses
Less Than Twelve Months	$ (1,918)	$ (962)
Twelve Months or More	(2,296)	(72,420)
Total	(4,214)	(73,382)
Estimated Fair Value
Less Than Twelve Months	469,662	237,384
Twelve Months or More	315,192	2,740,272
Total	784,854	2,977,656
Gross Unrealized Losses
Less than twelve months	(2)	(3)
Over twelve months	(194)	(3,505)
Total	(196)	(3,508)
Estimated Fair Value
Less than twelve months	924	2,059
Over twelve months	9,551	169,177
Total	10,475	171,236
Obligations of state and political subdivisions
Gross Unrealized Losses
Less Than Twelve Months		(9)
Twelve Months or More		(714)
Total		(723)
Estimated Fair Value
Less Than Twelve Months		4,112
Twelve Months or More		30,268
Total		34,380
Gross Unrealized Losses
Less than twelve months		(3)
Over twelve months		(2,494)
Total		(2,497)
Estimated Fair Value
Less than twelve months		2,059
Over twelve months		151,699
Total		153,758
Mortgage-backed securities: Residential agency
Gross Unrealized Losses
Less Than Twelve Months	(1,829)	(816)
Twelve Months or More	(2,101)	(56,257)
Total	(3,930)	(57,073)
Estimated Fair Value
Less Than Twelve Months	447,333	197,057
Twelve Months or More	299,396	2,193,862
Total	746,729	2,390,919
Gross Unrealized Losses
Less than twelve months	(2)	0
Over twelve months	(194)	(1,011)
Total	(196)	(1,011)
Estimated Fair Value
Less than twelve months	924	0
Over twelve months	9,551	17,478
Total	10,475	17,478
Mortgage-backed securities: Commercial agency
Gross Unrealized Losses
Less Than Twelve Months	(83)	(43)
Twelve Months or More	(96)	(14,756)
Total	(179)	(14,799)
Estimated Fair Value
Less Than Twelve Months	8,961	18,190
Twelve Months or More	10,994	483,565
Total	19,955	501,755
Other securities
Gross Unrealized Losses
Less Than Twelve Months	(6)	(94)
Twelve Months or More	(99)	(693)
Total	(105)	(787)
Estimated Fair Value
Less Than Twelve Months	13,368	18,025
Twelve Months or More	4,802	32,577
Total	$ 18,170	$ 50,602

XML

Investment Securities - Schedule of Securities in Other Assets on Company's Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Federal Home Loan Bank (FHLB) stock	$ 87,156	$ 95,213
Federal Reserve Bank Stock	85,630	85,630
CRA and Community Development Investment Funds	1,962	1,884
Other Investments	21,023	9,709
Marketable Securities	$ 195,771	$ 192,436

XML

Derivative Instruments and Other Hedging Activities - Effect of Hedging Instruments on Consolidated Financial Statements (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Designated as Hedging Instruments | Cash Flow Hedging | Interest rate contracts | Interest expense
Derivative Instruments and Hedging Activities Disclosures
Amount of gain (loss) recognized	$ (162)	$ (22)	$ (467)	$ (178)
Derivative, included component, gain (loss) recognized in earnings	102	(22)	212	(178)
Amount of gain (loss) recognized in income on derivatives (amount excluded from effectiveness testing)	(264)	0	(679)	0
Derivative instruments, gain (loss) recognized in income, ineffective portion and amount excluded from effectiveness testing, net	0	0	0	0
Derivative instruments, gain (loss) recognized in income, ineffective portion and amount excluded from effectiveness testing, included component net	0	0	0	0
Derivative instruments, gain (loss) recognized in income, ineffective portion and amount excluded from effectiveness testing, excluding component, net	0	0	0	0
Not Designated as Hedging Instruments
Derivative Instruments and Hedging Activities Disclosures
Amount of gain (loss) recognized	390	2,850	4,266	10,142
Not Designated as Hedging Instruments | Interest rate contracts | Commission income
Derivative Instruments and Hedging Activities Disclosures
Amount of gain (loss) recognized	4,067	2,586	10,761	5,093
Not Designated as Hedging Instruments | Foreign exchange contracts | Commission income
Derivative Instruments and Hedging Activities Disclosures
Amount of gain (loss) recognized	8	7	14	17
Not Designated as Hedging Instruments | Forward sales contracts | Mortgage income
Derivative Instruments and Hedging Activities Disclosures
Amount of gain (loss) recognized	(1,765)	948	(8,085)	4,563
Not Designated as Hedging Instruments | Written and purchased options | Mortgage income
Derivative Instruments and Hedging Activities Disclosures
Amount of gain (loss) recognized	(1,848)	(692)	1,675	473
Not Designated as Hedging Instruments | Other contracts | Commission income
Derivative Instruments and Hedging Activities Disclosures
Amount of gain (loss) recognized	(72)	1	(99)	(4)
OCI | Designated as Hedging Instruments | Cash Flow Hedging | Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures
Amount of gain (loss) recognized	(264)	818	1,992	4,762
Derivative, included component, gain (loss) recognized in earnings	312	818	3,196	4,762
Amount of gain (loss) recognized in income on derivatives (amount excluded from effectiveness testing)	$ (576)	$ 0	$ (1,204)	$ 0

XML

Goodwill and Other Intangible Assets - Schedule of Definite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 137,774	$ 137,774
Accumulated Amortization	(78,721)	(64,608)
Net Carrying Amount	59,053	73,166
Core deposit intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	136,183	136,183
Accumulated Amortization	(77,256)	(63,213)
Net Carrying Amount	58,927	72,970
Customer relationship intangible asset
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,385	1,385
Accumulated Amortization	(1,363)	(1,323)
Net Carrying Amount	22	62
Non-compete agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	206	206
Accumulated Amortization	(102)	(72)
Net Carrying Amount	$ 104	$ 134

XML

Leases - Components of Net Investment in Leases (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Leases [Abstract]
Lease payment receivable	$ 363,224
Unguaranteed residual assets	34,991
Total net investment in leases	$ 398,215

XML

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Unrealized holding gains (losses) arising during the period, tax expense (benefit)	$ 2,294	$ (5,906)	$ 27,805	$ (24,578)
Reclassification adjustment for gains (losses) included in net income, tax expense (benefit)	7	0	(244)	(12)
Change in fair value of derivative instruments designated as cash flow hedges, tax expense	(86)	217	903	1,266
Reclassification adjustment for gains (losses) included in net income, tax expense (benefit)	$ (53)	$ (6)	$ (154)	$ (47)

XML

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-37532
Entity Registrant Name	IBERIABANK Corp
Entity Incorporation, State or Country Code	LA
Entity Address, Address Line One	200 West Congress Street
Entity Address, City or Town	Lafayette,
Entity Address, State or Province	LA
Entity Tax Identification Number	72-1280718
Entity Address, Postal Zip Code	70501
City Area Code	337
Local Phone Number	521-4003
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		52,267,165
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000933141
Current Fiscal Year End Date	--12-31
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock (par value $1.00 per share)
Trading Symbol	IBKC
Security Exchange Name	NASDAQ
Series B Preferred Stock
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing a 1/400th Interest in
Trading Symbol	IBKCP
Security Exchange Name	NASDAQ
Series C Preferred Stock
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing a 1/400th Interest in
Trading Symbol	IBKCO
Security Exchange Name	NASDAQ
Series D Preferred Stock
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, Each Representing a 1/400th Interest
Trading Symbol	IBKCN
Security Exchange Name	NASDAQ

XML

Investment Securities (Tables)

9 Months Ended

Sep. 30, 2019

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities

Information pertaining to securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, was as follows:

	September 30, 2019
	Less Than Twelve Months					Twelve Months or More					Total
(in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
Mortgage-backed securities:
Residential agency	$	(1,829	)	$	447,333	$	(2,101	)	$	299,396	$	(3,930	)	$	746,729
Commercial agency	(83		)	8,961		(96		)	10,994		(179		)	19,955
Other securities	(6		)	13,368		(99		)	4,802		(105		)	18,170
Total securities available for sale	$	(1,918	)	$	469,662	$	(2,296	)	$	315,192	$	(4,214	)	$	784,854
Securities held to maturity:
Mortgage-backed securities:
Residential agency	$	(2	)	$	924	$	(194	)	$	9,551	$	(196	)	$	10,475
Total securities held to maturity	$	(2	)	$	924	$	(194	)	$	9,551	$	(196	)	$	10,475

	December 31, 2018
	Less Than Twelve Months					Twelve Months or More					Total
(in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
Obligations of state and political subdivisions	$	(9	)	$	4,112	$	(714	)	$	30,268	$	(723	)	$	34,380
Mortgage-backed securities:
Residential agency	(816		)	197,057		(56,257		)	2,193,862		(57,073		)	2,390,919
Commercial agency	(43		)	18,190		(14,756		)	483,565		(14,799		)	501,755
Other securities	(94		)	18,025		(693		)	32,577		(787		)	50,602
Total securities available for sale	$	(962	)	$	237,384	$	(72,420	)	$	2,740,272	$	(73,382	)	$	2,977,656
Securities held to maturity:
Obligations of state and political subdivisions	$	(3	)	$	2,059	$	(2,494	)	$	151,699	$	(2,497	)	$	153,758
Mortgage-backed securities:
Residential agency	—			—		(1,011		)	17,478		(1,011		)	17,478
Total securities held to maturity	$	(3	)	$	2,059	$	(3,505	)	$	169,177	$	(3,508	)	$	171,236

The amortized cost and fair values of investment securities, with gross unrealized gains and losses, consisted of the following:

	September 30, 2019
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	39,887	$	294	$	—		$	40,181
Obligations of state and political subdivisions	166,034		7,333		—			173,367
Mortgage-backed securities:
Residential agency	3,135,619		31,354		(3,930		)	3,163,043
Commercial agency	732,669		24,239		(179		)	756,729
Other securities	101,324		3,543		(105		)	104,762
Total securities available for sale	$	4,175,533	$	66,763	$	(4,214	)	$	4,238,082
Securities held to maturity:
Obligations of state and political subdivisions	$	167,888	$	7,725	$	—		$	175,613
Mortgage-backed securities:
Residential agency	17,119		50		(196		)	16,973
Total securities held to maturity	$	185,007	$	7,775	$	(196	)	$	192,586

	December 31, 2018
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	995	$	3	$	—		$	998
Obligations of state and political subdivisions	177,566		2,045		(723		)	178,888
Mortgage-backed securities:
Residential agency	3,837,584		8,886		(57,073		)	3,789,397
Commercial agency	730,148		2,363		(14,799		)	717,712
Other securities	97,020		351		(787		)	96,584
Total securities available for sale	$	4,843,313	$	13,648	$	(73,382	)	$	4,783,579
Securities held to maturity:
Obligations of state and political subdivisions	$	188,684	$	309	$	(2,497	)	$	186,496
Mortgage-backed securities:
Residential agency	18,762		30		(1,011		)	17,781
Total securities held to maturity	$	207,446	$	339	$	(3,508	)	$	204,277

Held-to-maturity Securities

The amortized cost and fair values of investment securities, with gross unrealized gains and losses, consisted of the following:

	September 30, 2019
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	39,887	$	294	$	—		$	40,181
Obligations of state and political subdivisions	166,034		7,333		—			173,367
Mortgage-backed securities:
Residential agency	3,135,619		31,354		(3,930		)	3,163,043
Commercial agency	732,669		24,239		(179		)	756,729
Other securities	101,324		3,543		(105		)	104,762
Total securities available for sale	$	4,175,533	$	66,763	$	(4,214	)	$	4,238,082
Securities held to maturity:
Obligations of state and political subdivisions	$	167,888	$	7,725	$	—		$	175,613
Mortgage-backed securities:
Residential agency	17,119		50		(196		)	16,973
Total securities held to maturity	$	185,007	$	7,775	$	(196	)	$	192,586

	December 31, 2018
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	995	$	3	$	—		$	998
Obligations of state and political subdivisions	177,566		2,045		(723		)	178,888
Mortgage-backed securities:
Residential agency	3,837,584		8,886		(57,073		)	3,789,397
Commercial agency	730,148		2,363		(14,799		)	717,712
Other securities	97,020		351		(787		)	96,584
Total securities available for sale	$	4,843,313	$	13,648	$	(73,382	)	$	4,783,579
Securities held to maturity:
Obligations of state and political subdivisions	$	188,684	$	309	$	(2,497	)	$	186,496
Mortgage-backed securities:
Residential agency	18,762		30		(1,011		)	17,781
Total securities held to maturity	$	207,446	$	339	$	(3,508	)	$	204,277

Information pertaining to securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, was as follows:

	September 30, 2019
	Less Than Twelve Months					Twelve Months or More					Total
(in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
Mortgage-backed securities:
Residential agency	$	(1,829	)	$	447,333	$	(2,101	)	$	299,396	$	(3,930	)	$	746,729
Commercial agency	(83		)	8,961		(96		)	10,994		(179		)	19,955
Other securities	(6		)	13,368		(99		)	4,802		(105		)	18,170
Total securities available for sale	$	(1,918	)	$	469,662	$	(2,296	)	$	315,192	$	(4,214	)	$	784,854
Securities held to maturity:
Mortgage-backed securities:
Residential agency	$	(2	)	$	924	$	(194	)	$	9,551	$	(196	)	$	10,475
Total securities held to maturity	$	(2	)	$	924	$	(194	)	$	9,551	$	(196	)	$	10,475

	December 31, 2018
	Less Than Twelve Months					Twelve Months or More					Total
(in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
Obligations of state and political subdivisions	$	(9	)	$	4,112	$	(714	)	$	30,268	$	(723	)	$	34,380
Mortgage-backed securities:
Residential agency	(816		)	197,057		(56,257		)	2,193,862		(57,073		)	2,390,919
Commercial agency	(43		)	18,190		(14,756		)	483,565		(14,799		)	501,755
Other securities	(94		)	18,025		(693		)	32,577		(787		)	50,602
Total securities available for sale	$	(962	)	$	237,384	$	(72,420	)	$	2,740,272	$	(73,382	)	$	2,977,656
Securities held to maturity:
Obligations of state and political subdivisions	$	(3	)	$	2,059	$	(2,494	)	$	151,699	$	(2,497	)	$	153,758
Mortgage-backed securities:
Residential agency	—			—		(1,011		)	17,478		(1,011		)	17,478
Total securities held to maturity	$	(3	)	$	2,059	$	(3,505	)	$	169,177	$	(3,508	)	$	171,236

Additional Information on Securities in a Continuous Loss Position

Additional information on securities that were in a continuous loss position for over twelve months at September 30, 2019 and December 31, 2018 is presented in the following table.

(in thousands)	September 30, 2019		December 31, 2018
Number of securities
Mortgage-backed securities:
Residential agency	66		302
Commercial agency	6		72
Obligations of state and political subdivisions	—		60
Other securities	4		7
	76		441
Amortized Cost Basis
Mortgage-backed securities:
Residential agency	$	311,242	$	2,268,608
Commercial agency	11,090		498,321
Obligations of state and political subdivisions	—		185,175
Other securities	4,901		33,270
	$	327,233	$	2,985,374
Unrealized Loss
Mortgage-backed securities:
Residential agency	$	2,295	$	57,268
Commercial agency	96		14,756
Obligations of state and political subdivisions	—		3,208
Other securities	99		693
	$	2,490	$	75,925

Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Maturity

The amortized cost and estimated fair value of investment securities by maturity at September 30, 2019 are presented in the following table. Securities are classified according to their contractual maturities without consideration of principal amortization, potential prepayments or call options. Accordingly, actual maturities may differ from contractual maturities. Weighted average yields are calculated on the basis of the yield to maturity based on the amortized cost of each security.

	Securities Available for Sale						Securities Held to Maturity
(in thousands)	Weighted Average Yield		Amortized Cost		Estimated Fair Value		Weighted Average Yield		Amortized Cost		Estimated Fair Value
Within one year or less	2.55	%	$	10,720	$	10,787	2.33	%	$	948	$	949
One through five years	2.62		123,447		125,721		2.63		4,483		4,518
After five through ten years	2.76		760,325		786,040		2.35		43,085		44,653
Over ten years	2.67		3,281,041		3,315,534		2.58		136,491		142,466
	2.68	%	$	4,175,533	$	4,238,082	2.53	%	$	185,007	$	192,586

Schedule of Realized Gains and Losses from Sale of Securities Classified as Available for Sale

The following is a summary of realized gains and losses from the sale of securities classified as available for sale. Gains or losses on securities sold are recorded on the trade date, using the specific identification method.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2019		2018		2019			2018
Realized gains	$	27	$	—	$	1,324		$	39
Realized losses	—		—		(2,311		)	(95		)
	$	27	$	—	$	(987	)	$	(56	)

Schedule of Securities in Other Assets on Company's Consolidated Balance Sheets

The Company accounts for the following securities at cost less impairment plus or minus any observable price changes, which approximates fair value, with the exception of CRA and Community Development Investment Funds, which are recorded at fair value. Other equity securities, which are presented in other assets on the consolidated balance sheets, were as follows:

(in thousands)	September 30, 2019		December 31, 2018
Federal Home Loan Bank stock	$	87,156	$	95,213
Federal Reserve Bank stock	85,630		85,630
CRA and Community Development Investment Funds	1,962		1,884
Other investments	21,023		9,709
	$	195,771	$	192,436

XML

Basis of Presentation

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Basis of Presentation

BASIS OF PRESENTATION

IBERIABANK Corporation is a financial holding company based in Lafayette, Louisiana. The accompanying unaudited consolidated financial statements include the accounts of IBERIABANK Corporation and its consolidated subsidiaries (the "Company"). Through its subsidiaries, the Company provides a full range of commercial and consumer banking services, including private banking, small business, wealth and trust management, retail brokerage, mortgage, commercial leasing and equipment financing, and title insurance services through locations in Louisiana, Arkansas, Tennessee, Alabama, Texas, Florida, Georgia, South Carolina, North Carolina, Mississippi, Missouri, and New York.

The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all information and notes necessary for complete financial statements in accordance with GAAP. In the opinion of management, the accompanying unaudited consolidated financial statements contain all the significant adjustments, consisting of normal and recurring items, considered necessary for fair presentation. These interim financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes in the Annual Report on Form 10-K for the year ended December 31, 2018. Operating results for the interim period are not necessarily indicative of the results that may be expected for the full year.

All significant intercompany balances and transactions have been eliminated in consolidation. Certain amounts reported in prior periods have been reclassified to conform to the current period presentation. See the Glossary of Defined Terms included in this Report for terms used herein.

XML

Commitments and Contingencies

9 Months Ended

Sep. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Off-balance sheet commitments

In the normal course of business, to meet the financing needs of its customers, the Company is a party to credit-related financial instruments, with risk not reflected in the consolidated financial statements. These financial instruments include commitments to extend credit, standby letters of credit, and commercial letters of credit. Such commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets. The credit policies used for these commitments are consistent with those used for on-balance sheet instruments. The Company’s exposure to credit loss in the event of non-performance by its customers under such commitments or letters of credit represents the contractual amount of the financial instruments as indicated in the table below. At September 30, 2019 and December 31, 2018, the fair value of guarantees under commercial and standby letters of credit was $2.2 million and $2.4 million, respectively. This fair value will decrease as the existing commercial and standby letters of credit approach their expiration dates.

At September 30, 2019 and December 31, 2018, respectively, the Company had the following financial instruments outstanding and related reserves, whose contract amounts represent credit risk:

(in thousands)	September 30, 2019		December 31, 2018
Commitments to extend credit	$	883,615	$	642,162
Unfunded commitments under lines of credit	7,252,052		6,883,963
Commercial and standby letters of credit	215,664		240,436
Reserve for unfunded lending commitments	16,144		14,830

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee by the borrower. Since many of the commitments are expected to be drawn upon, the total commitment amounts generally represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral, if any, is based on management’s credit evaluation of the customer.

Unfunded commitments under commercial lines of credit, revolving credit lines, and overdraft protection agreements are commitments for possible future extensions of credit to existing customers. Many of these types of commitments do not contain a specified maturity date and may not be drawn upon to the total extent to which the Company is committed. See Note 5, Allowance for Credit Losses and Credit Quality, for additional information related to the Company’s reserve for unfunded lending commitments.

Commercial and standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These guarantees are primarily issued to support public and private borrowing arrangements, including commercial paper issuance, bond financing, and similar transactions. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. When necessary, they are collateralized, generally in the form of marketable securities and cash equivalents.

Legal proceedings

The nature of the business of the Company’s banking and other subsidiaries ordinarily results in a certain amount of claims, litigation, investigations, and legal and administrative cases and proceedings, which are considered incidental to the normal conduct of business. Some of these claims are against entities or assets of which the Company is a successor or acquired in business acquisitions. The Company has asserted defenses to these claims and, with respect to such legal proceedings, intends to continue to defend itself vigorously, litigating or settling cases according to management’s judgment as to what is in the best interest of the Company and its shareholders.

In July of 2016, the Company received a subpoena from the Office of Inspector General of the U.S. Department of Housing and Urban Development (“HUD”) requesting information on certain previously originated loans insured by the Federal Housing Administration ("FHA") as well as other documents regarding the Company's FHA-related policies and practices. After the Company complied with the subpoena, attorneys from the Department of Justice (“DOJ”) informed the Company in late March of 2017 that a civil qui tam suit had been filed against the Company in federal court involving the subject matter of the HUD subpoena. The HUD lawsuit was settled on December 11, 2017 in the amount of $11.7 million. On February 2, 2018, IBERIABANK filed a lawsuit in the United States District Court for the Eastern District of Louisiana (New Orleans) against Illinois Union Insurance Company and Travelers Casualty and Surety Company of America in an effort to recover the $11.7 million it paid to settle the HUD matter. IBERIABANK filed that lawsuit to recover the insurance proceeds to which it claims to be entitled under certain Bankers’ Professional Liability insurance policies issued by defendants Illinois Union and Travelers. More specifically, IBERIABANK alleges that the insurers have failed to honor their obligations under the policies to pay IBERIABANK’s losses in connection with the $11.7 million settlement of disputed allegations relating to IBERIABANK’s professional services in connection with certain mortgage loans insured by the FHA. The judge in the federal lawsuit granted motion for summary judgment thereby dismissing the case. The Company has appealed that decision to the United States Court of Appeals for the Fifth Circuit. The appeal seeks reversal of the summary judgment such that the case can be remanded to the district court in an effort to recover the $11.7 million.

The Company assesses its liabilities and contingencies in connection with outstanding legal proceedings utilizing the latest information available. Where it is probable that the Company will incur a loss and the amount of the loss can be reasonably estimated, the Company records a liability in its consolidated financial statements. These legal reserves may be increased or decreased to reflect any relevant developments on a quarterly basis. Where a loss is not probable or the amount of loss is not estimable, the Company does not accrue legal reserves. While the outcome of legal proceedings is inherently uncertain, based on information currently available and available insurance coverage, the Company’s management believes that it has established appropriate legal reserves. Any incremental liabilities arising from pending legal proceedings are not expected to have a material adverse effect on the Company’s consolidated financial position, consolidated results of operations, or consolidated cash flows. However, it is possible that the ultimate resolution of these matters, if unfavorable, may be material to the Company’s consolidated financial position, consolidated results of operations, or consolidated cash flows.

As of the date of this filing, the Company believes the amount of losses associated with legal proceedings that is reasonably possible to incur above amounts already accrued and reported as of September 30, 2019 is not material.