10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the quarterly period ended June 30, 2014

¨ 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 0-25756

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  x    No  ¨

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted 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  x    No  ¨

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company (as defined in Securities Exchange Act Rule 12b-2).

Large Accelerated Filer	x	Accelerated Filer	¨
Non-accelerated Filer	¨	Smaller Reporting Company	¨

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

At July 31, 2014, the Registrant had 33,419,918 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)		3
	Consolidated Balance Sheets as of June 30, 2014 and December 31, 2013		3
	Consolidated Statements of Comprehensive Income (Loss) for the three and six months ended June 30, 2014 and 2013		4
	Consolidated Statements of Shareholders’ Equity for the six months ended June 30, 2014 and 2013		5
	Consolidated Statements of Cash Flows for the six months ended June 30, 2014 and 2013		6
	Notes to Unaudited Consolidated Financial Statements		7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		54
Item 3.	Quantitative and Qualitative Disclosures About Market Risk		99
Item 4.	Controls and Procedures		99
Part II.	Other Information
Item 1.	Legal Proceedings		100
Item 1A.	Risk Factors		100
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		100
Item 3.	Defaults Upon Senior Securities		100
Item 4.	Mine Safety Disclosures		100
Item 5.	Other Information		100
Item 6.	Exhibits		101
Signatures			102

2

IBERIABANK CORPORATION AND SUBSIDIARIES

Consolidated Balance Sheets

(Dollars in thousands, except share data)	(unaudited) June 30, 2014			December 31, 2013
Assets
Cash and due from banks	$	286,615		$	238,672
Interest-bearing deposits in banks		381,955			152,724
Total cash and cash equivalents		668,570			391,396
Securities available for sale, at fair value		2,008,953			1,936,797
Securities held to maturity (fair values of $134,063 and $152,566, respectively)		132,245			154,109
Mortgage loans held for sale ($178,380 and $97,273 recorded at fair value, respectively)		178,380			128,442
Loans covered by loss share agreements		585,439			719,793
Non-covered loans, net of unearned income		10,313,088			8,772,226
Total loans, net of unearned income		10,898,527			9,492,019
Allowance for loan losses		(133,519	)		(143,074	)
Loans, net		10,765,008			9,348,945
FDIC loss share receivables		120,532			162,312
Premises and equipment, net		307,090			287,510
Goodwill		524,154			401,872
Other assets		620,110			554,167
Total Assets	$	15,325,042		$	13,365,550
Liabilities
Deposits:
Non-interest-bearing	$	3,047,385		$	2,575,939
Interest-bearing		8,933,798			8,161,061
Total deposits		11,981,183			10,737,000
Short-term borrowings		1,034,741			680,344
Long-term debt		365,747			280,699
Other liabilities		144,065			136,528
Total Liabilities		13,525,736			11,834,571
Shareholders’ Equity
Preferred stock, $1 par value – 5,000,000 shares authorized		—			—
Common stock, $1 par value – 50,000,000 shares authorized; 35,262,901 and 31,917,385 shares issued, respectively		35,263			31,917
Additional paid-in capital		1,391,097			1,178,284
Retained earnings		455,511			436,141
Accumulated other comprehensive income (loss)		4,693			(16,491	)
Treasury stock at cost – 1,852,819 and 2,130,841 shares, respectively		(87,258	)		(98,872	)
Total Shareholders’ Equity		1,799,306			1,530,979
Total Liabilities and Shareholders’ Equity	$	15,325,042		$	13,365,550

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

3

IBERIABANK CORPORATION AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income (Loss) (unaudited)

	For The Three Months Ended June 30						For the Six Months Ended June 30
(Dollars in thousands, except per share data)	2014			2013			2014			2013
Interest and Dividend Income
Loans, including fees	$	123,124		$	115,242		$	244,278		$	238,309
Mortgage loans held for sale, including fees		1,474			1,351			2,359			2,676
Investment securities:
Taxable interest		9,492			7,301			18,859			14,406
Tax-exempt interest		1,508			1,677			3,058			3,432
Amortization of FDIC loss share receivable		(17,009	)		(18,130	)		(36,273	)		(45,831	)
Other		631			736			1,170			1,601
Total interest and dividend income		119,220			108,177			233,451			214,593
Interest Expense
Deposits:
NOW and MMDA		4,123			4,614			8,307			10,021
Savings		83			74			147			167
Time deposits		3,089			4,372			6,026			9,026
Short-term borrowings		373			121			615			261
Long-term debt		2,573			2,514			4,970			5,764
Total interest expense		10,241			11,695			20,065			25,239
Net interest income		108,979			96,482			213,386			189,354
(Reversal of) Provision for loan losses		4,748			1,807			6,851			(1,569	)
Net interest income after provision for loan losses		104,231			94,675			206,535			190,923
Non-interest Income
Service charges on deposit accounts		8,203			7,106			15,216			13,903
Mortgage income		17,957			17,708			28,089			36,639
Title revenue		5,262			5,696			9,429			10,717
ATM/debit card fee income		2,937			2,357			5,404			4,541
Income from bank owned life insurance		935			901			3,376			1,840
Gain (loss) on sale of available for sale investments		8			(66	)		27			2,261
Derivative losses reclassified from other comprehensive income		—			33			—			(392	)
Broker commissions		5,479			3,863			9,526			7,397
Other income		7,182			4,891			12,577			10,074
Total non-interest income		47,963			42,489			83,644			86,980
Non-interest Expense
Salaries and employee benefits		68,846			63,815			128,707			126,344
Net occupancy and equipment		16,104			14,283			30,094			29,478
Impairment of FDIC loss share receivables and other long-lived assets		1,109			4,618			1,441			36,431
Communication and delivery		3,464			3,116			6,231			6,387
Marketing and business development		3,412			3,049			6,262			6,136
Data processing		10,121			4,264			15,503			8,256
Amortization of acquisition intangibles		1,244			1,181			2,461			2,364
Professional services		5,560			5,101			9,308			9,519
Costs of OREO property, net		497			367			1,657			1,339
Credit and other loan related expense		3,093			4,135			6,639			7,858
Insurance		3,255			2,782			6,672			5,283
Travel and entertainment		2,126			2,019			4,456			4,287
Other expenses		8,544			8,631			15,371			18,577
Total non-interest expense		127,375			117,361			234,802			262,259
Income before income tax expense		24,819			19,803			55,377			15,644
Income tax expense (benefit)		6,271			4,213			14,434			(663	)
Net Income		18,548			15,590			40,943			16,307
Income Available to Common Shareholders – Basic	$	18,548		$	15,590		$	40,943		$	16,307
Earnings Allocated to Unvested Restricted Stock		(298	)		(293	)		(699	)		(313	)
Earnings Available to Common Shareholders – Diluted		18,250			15,297			40,244			15,994
Earnings per common share – Basic	$	0.60		$	0.53		$	1.35		$	0.55
Earnings per common share – Diluted		0.60			0.53			1.35			0.55
Cash dividends declared per common share		0.34			0.34			0.68			0.68
Other comprehensive income
Unrealized gains on securities:
Unrealized holding gains (losses) arising during the period	$	16,730		$	(42,303	)	$	32,618		$	(44,297	)
Less: reclassification adjustment for (gains) losses included in net income		(8	)		66			(27	)		(2,261	)
Unrealized gain (loss) on securities, before tax		16,722			(42,237	)		32,591			(46,558	)
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		—			(1,121	)		—			952
Less: reclassification adjustment for losses (gains) included in net income		—			(33	)		—			392
Fair value of derivative instruments designated as cash flow hedges, before tax		—			(1,154	)		—			1,344
Other comprehensive income (loss), before tax		16,722			(43,391	)		32,591			(45,214	)
Income tax expense (benefit) related to items of other comprehensive (loss) income		5,853			(15,187	)		11,407			(15,825	)
Other comprehensive income (loss), net of tax		10,869			(28,204	)		21,184			(29,389	)
Comprehensive income (loss)	$	29,417		$	(12,614	)	$	62,127		$	(13,082	)

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

4

IBERIABANK CORPORATION AND SUBSIDIARIES

Consolidated Statements of Shareholders’ Equity

(unaudited)

(Dollars in thousands, except share and per share data)					Additional Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)									Total
	Common Stock													Treasury Stock
	Shares		Amount											Shares			Amount
Balance, December 31, 2012		31,917,385	$	31,917	$	1,176,180		$	411,472		$	24,477			2,427,640		$	(114,178	)		1,529,868
Net income		—		—		—			16,307			—			—			—			16,307
Other comprehensive loss		—		—		—			—			(29,389	)		—			—			(29,389	)
Cash dividends declared, $0.68 per share		—		—		—			(20,197	)		—			—			—			(20,197	)
Reissuance of treasury stock under incentive plans, net of shares surrendered in payment, including tax benefit		—		—		(1,120	)		—			—			(220,313	)		4,031			2,911
Common stock issued for recognition and retention plans		—		—		(7,962	)		—			—			—			7,962			—
Share-based compensation cost		—		—		5,261			—			—			—			—			5,261
Balance, June 30, 2013		31,917,385	$	31,917	$	1,172,359		$	407,582		$	(4,912	)		2,207,327		$	(102,185	)	$	1,504,761
Balance, December 31, 2013		31,917,385	$	31,917	$	1,178,284		$	436,141		$	(16,491	)		2,130,841		$	(98,872	)	$	1,530,979
Net income		—		—		—			40,943			—			—			—			40,943
Other comprehensive income		—		—		—			—			21,184			—			—			21,184
Cash dividends declared, $0.68 per share		—		—		—			(21,573	)		—			—			—			(21,573	)
Reissuance of treasury stock under incentive plans, net of shares surrendered in payment, including tax benefit		—		—		1,797			—			—			(278,022	)		5,389			7,186
Common stock issued for acquisitions		3,345,516		3,346		211,319			—			—			—			—			214,665
Common stock issued for recognition and retention plans		—		—		(6,225	)		—			—			—			6,225			—
Share-based compensation cost		—		—		5,922			—			—			—			—			5,922
Balance, June 30, 2014		35,262,901	$	35,263	$	1,391,097		$	455,511		$	4,693			1,852,819		$	(87,258	)	$	1,799,306

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

5

IBERIABANK CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows (unaudited)

(Dollars in thousands)
	For the Six Months Ended June 30,
	2014			2013
Cash Flows from Operating Activities
Net income	$	40,943		$	16,307
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		7,749			13,346
Amortization of purchase accounting adjustments, net		6,142			(10,879	)
Provision for (Reversal of) loan losses		6,851			(1,569	)
Share-based equity compensation expense		5,922			5,261
Gain on sale of assets		(16	)		(49	)
Gain on sale of available for sale investments		(27	)		(2,261	)
Gain on sale of OREO		(1,322	)		(2,975	)
Loss on abandonment of fixed assets		—			4,618
Impairment of FDIC loss share receivables		804			31,813
Amortization of premium/discount on investments		6,713			10,683
Derivative losses on swaps		—			(209	)
(Benefit) provision for deferred income taxes		(6,817	)		(12,198	)
Originations of mortgage loans held for sale		(760,658	)		(1,207,676	)
Proceeds from sales of mortgage loans held for sale		730,129			1,350,910
Gain on sale of mortgage loans held for sale, net		(24,397	)		(37,790	)
Tax benefit associated with share-based payment arrangements		(945	)		(417	)
(Increase) decrease in other assets		(26,251	)		732
Other operating activities, net		(780	)		5,798
Net Cash (Used in) Provided by Operating Activities		(15,960	)		163,445
Cash Flows from Investing Activities
Proceeds from sales of securities available for sale		14,050			44,675
Proceeds from maturities, prepayments and calls of securities available for sale		154,111			494,593
Purchases of securities available for sale		(169,807	)		(760,640	)
Proceeds from maturities, prepayments and calls of securities held to maturity		21,383			47,101
Purchases of securities held to maturity		—			(5,901	)
Reimbursement of recoverable covered asset losses from the FDIC		1,319			49,582
Increase in loans receivable, net		(306,593	)		(427,489	)
Proceeds from sale of premises and equipment		6,474			639
Purchases of premises and equipment		(21,297	)		(8,735	)
Proceeds from disposition of real estate owned		43,376			44,082
Investment in new market tax credit entities		(5,809	)		—
Cash received in excess of cash paid for acquisition		188,796			—
Other investing activities, net		(13,567	)		11,400
Net Cash Used in Investing Activities		(87,564	)		(510,693	)
Cash Flows from Financing Activities
Increase (decrease) in deposits, net of deposits acquired		101,223			(106,219	)
Net change in short-term borrowings, net of borrowings acquired		299,296			(13,668	)
Proceeds from long-term debt		—			2,230
Repayments of long-term debt		(6,666	)		(141,296	)
Dividends paid to shareholders		(20,341	)		(20,122	)
Proceeds from sale of treasury stock for stock options exercised		9,240			4,238
Payments to repurchase common stock		(2,999	)		(1,744	)
Common stock issued		—			—
Tax benefit associated with share-based payment arrangements		945			417
Net Cash Provided by (Used in) Financing Activities		380,698			(276,164	)
Net Increase (Decrease) In Cash and Cash Equivalents		277,174			(623,412	)
Cash and Cash Equivalents at Beginning of Period		391,396			970,977
Cash and Cash Equivalents at End of Period	$	668,570		$	347,565
Supplemental Schedule of Noncash Activities
Acquisition of real estate in settlement of loans	$	16,851		$	51,733
Transfers of property into Other Real Estate	$	27,074		$	51,733
Supplemental Disclosures
Cash paid for:
Interest on deposits and borrowings	$	19,277		$	25,797
Income taxes, net	$	39,306		$	19,558

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

6

IBERIABANK CORPORATION AND SUBSIDIARIES

Notes to Unaudited Consolidated Financial Statements

NOTE 1 – BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include information or footnotes necessary for a complete presentation of financial position, results of operations and cash flows in conformity with generally accepted accounting principles. These interim financial statements should be read in conjunction with the audited consolidated financial statements and note disclosures for IBERIABANK Corporation (the “Company”) previously filed with the Securities and Exchange Commission (the “SEC”) in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, IBERIABANK, Lenders Title Company (“LTC”), IBERIA Capital Partners L.L.C. (“ICP”), IB Aircraft Holdings, LLC, 1887 Leasing LLC, IBERIA Asset Management, Inc. (“IAM”), and IBERIA CDE, L.L.C. (“CDE”). All significant intercompany balances and transactions have been eliminated in consolidation. All normal, recurring adjustments which, in the opinion of management, are necessary for a fair presentation of the financial statements have been included. Certain amounts reported in prior periods have been reclassified to conform to the current period presentation.

NATURE OF OPERATIONS

The Company offers commercial and retail banking products and services to customers throughout locations in six states through IBERIABANK. The Company also operates mortgage production offices in twelve states through IBERIABANK Mortgage Company (“IMC”), and offers a full line of title insurance and closing services throughout Arkansas and Louisiana through LTC and its subsidiaries. ICP provides equity research, institutional sales and trading, and corporate finance services. 1887 Leasing LLC owns an aircraft used by management of the Company, and IB Aircraft Holdings, LLC owns a fractional share of a separate aircraft also used by management. IAM provides wealth management and trust services for commercial and private banking clients. CDE is engaged in the purchase of tax credits.

USE OF ESTIMATES

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Material estimates that are susceptible to significant change in the near term are the allowance for credit losses, valuation of and accounting for loans covered by loss sharing arrangements with the FDIC and the related loss share receivables, valuation of and accounting for acquired loans, and valuation of goodwill, intangible assets and other purchase accounting adjustments.

CONCENTRATION OF CREDIT RISKS

Most of the Company’s business activity is with customers located within the States of Louisiana, Florida, Arkansas, Alabama, Texas, and Tennessee. The Company’s lending activity is concentrated in its market areas in those states. The Company has emphasized originations of commercial loans and private banking loans, defined as loans to larger consumer clients. Repayments on loans are expected to come from cash flows of the borrower and/or guarantor. Losses on secured loans are limited by the value of the collateral upon default of the borrowers. The Company does not have any significant concentrations to any one industry or customer.

FAIR VALUE MEASUREMENTS

The Company estimates fair value based on the assumptions market participants would use when selling an asset or transferring a liability and characterizes such measurements within the fair value hierarchy based on the inputs used to develop those assumptions and measure fair value. The hierarchy requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows:

• Level 1 – Quoted prices in active markets for identical assets or liabilities.

• Level 2 – Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.

• Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

A description of the valuation methodologies used for instruments measured at fair value follows, as well as the classification of such instruments within the valuation hierarchy.

Investment securities

Securities are classified within Level 1 where quoted market prices are available in an active market. Inputs include securities that have quoted prices in active markets for identical assets. If quoted market prices are unavailable, fair value is estimated using quoted prices of securities with similar characteristics, at which point the securities would be classified within Level 2 of the hierarchy. Examples may include certain collateralized mortgage and debt obligations.

7

Mortgage loans held for sale

Mortgage loans originated and held for sale, excluding loans held for sale that are recorded at fair value under the fair value option, are carried at the lower of cost or estimated fair value. When determining the fair value of loans held for sale, the Company obtains quotes or bids on these loans directly from purchasing financial institutions (Level 2). Mortgage loans held for sale that were recorded at estimated fair value are included in Note 17.

Impaired loans

Loans are measured for impairment using the methods permitted by Accounting Standards Codification (“ASC”) Topic 310. Fair value measurements are used in determining impairment using either the loan’s observable market price (Level 1), if available, or the fair value of the collateral if the loan is collateral dependent (Level 2). Measuring the impairment of loans using the present value of expected future cash flows, discounted at the loan’s effective interest rate, is not considered a fair value measurement. Fair value of the collateral is determined by appraisals or independent valuation.

Other real estate owned (OREO)

Fair values of OREO at June 30, 2014 and December 31, 2013 are determined by sales agreement or appraisal, and costs to sell are based on estimation per the terms and conditions of the sales agreement or amounts commonly used in real estate transactions. Inputs include appraisal values on the properties or recent sales activity for similar assets in the property’s market, and thus OREO measured at fair value would be classified within Level 2 of the hierarchy. The Company included property write-downs of $0.6 million and $1.4 million in earnings for the three months ended June 30, 2014 and 2013, respectively, and $1.4 million and $2.6 million for the six months ended June 30, 2014 and 2013, respectively.

Derivative financial instruments

The Company enters into commitments to originate loans whereby the interest rate on the prospective loan is determined prior to funding. Rate lock commitments on mortgage loans that are intended to be sold are considered to be derivatives. The Company offers its customers a certificate of deposit that provides the purchaser a guaranteed return of principal at maturity plus potential return, which allows the Company to identify a known cost of funds. The rate of return is based on an equity index, and as such represents an embedded derivative. Fair value of interest rate swaps, interest rate lock commitments, forward sales contracts, and equity-linked written and purchased options are estimated using prices of financial instruments with similar characteristics, and thus are classified within Level 2 of the fair value hierarchy.

NOTE 2 – RECENT ACCOUNTING PRONOUNCEMENTS

ASU No. 2014-01

In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-01, Investments – Equity Method and Joint Ventures, in order to provide guidance on accounting for investments in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for low-income housing tax credit (“LIHTC”). Through the Company’s investments in these entities, the Company receives tax credits and/or tax deductions from operating losses, which are allowable on the Company’s filed income tax returns over a 10-year period, subject to recapture over a 15-year period beginning with the first year the tax credits are earned.

Under current U.S. generally accepted accounting principles (“U.S. GAAP”), the Company may elect to account for the investments using the effective yield method if certain conditions are met, and if they are not met, the investments are accounted for under either the equity method or the cost method. The Company currently accounts for its investments under the equity method. The provisions of ASU No. 2014-01 permit the Company to make an accounting policy election to account for its investments in LIHTC entities using the proportional amortization method if certain conditions are met. Under the proportional amortization method, the Company would amortize the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognize the net investment performance in the Company’s consolidated statements of comprehensive income as a component of income tax expense or benefit. ASU No. 2014-01 also required the Company to disclose information that enables users of the consolidated financial statements to understand the nature of the Company’s investments, the measurement of these investments, and their effect on the Company’s financial position and results of operations.

ASU No. 2014-01 is effective beginning with the Company’s first quarter ending March 31, 2015, with early adoption permitted. If adopted, the provisions of ASU No. 2014-01 would be applied retrospectively to all financial statement periods presented. The Company is currently assessing the effect a change in accounting policy would have on its consolidated financial statements, but does not anticipate the potential accounting policy change to the proportional amortization method would be material to the financial condition, results of operations, or liquidity of the Company. The expanded disclosures required by ASU No. 2014-01 will be incorporated in the Company’s future consolidated financial statements upon adoption.

ASU No. 2014-04

In January 2014, the FASB issued ASU No. 2014-04, Receivables-Troubled Debt Restructurings by Creditors, in order to clarify when a creditor should reclassify mortgage loans collateralized by residential real estate from their loan portfolio to other real estate owned

8

(“OREO”) upon foreclosure. The amendments in the ASU deem that an in-substance repossession or foreclosure has occurred when either the creditor obtains legal title to the property or the borrower conveys all interest in the property to the creditor to satisfy the loan through completion of a deed in-lieu-of foreclosure or similar legal agreement. Additionally, ASU No. 2014-04 requires the Company to disclose both the amount of foreclosed residential real estate property held and the investment in consumer mortgage loans collateralized by residential real estate that are in the process of foreclosure.

ASU No. 2014-04 is effective beginning with the Company’s first quarter ending March 31, 2015, with early adoption permitted. When adopting the provisions of ASU No. 2014-04, the Company could apply the provisions using either a prospective transition method or a modified retrospective method. The Company is currently assessing the effect the adoption would have on its consolidated financial statements, but does not anticipate adoption would materially affect the Company’s financial condition, results of operations, or liquidity. The expanded disclosures required by this ASU will be incorporated in the Company’s future consolidated financial statements upon adoption.

ASU No. 2014-09

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which implements a common revenue standard and clarifies the principles used for recognizing revenue. The amendments in the ASU clarify that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. As part of that principle, the entity should identify the contract(s) with the customer, identify the performance obligations of the contract, determine the transaction price, allocate that transaction price to the performance obligation(s) of the contract, and then recognize revenue when or as the entity satisfies the performance
obligation(s).

ASU No. 2014-09 is effective beginning with the Company’s first quarter ending March 31, 2017. The Company is currently assessing the effect the adoption of this ASU will have on its consolidated financial statements, but the Company does not expect adoption will have a significant impact on the Company’s consolidated financial statements.

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NOTE 3 – EARNINGS PER SHARE

Share-based payment awards that entitle holders to receive non-forfeitable dividends before vesting are considered participating securities and thus included in the calculation of basic earnings per share. These awards are included in the calculation of basic earnings per share under the two-class method. The two-class method allocates earnings for the period between common shareholders and other participating securities holders. The participating awards receiving dividends will be allocated the same amount of income as if they were outstanding shares.

The following table presents the calculation of basic and diluted earnings per share for the periods indicated.

	For the Three Months Ended June 30						For the Six Months Ended June 30
	2014			2013			2014			2013
(Dollars in thousands, except per share data)
Income available to common shareholders	$	18,548		$	15,590		$	40,943		$	16,307
Distributed earnings (capital) to unvested restricted stock		(286	)		(290	)		(681	)		(313	)
Distributed earnings (capital) to common shareholders – basic		18,262			15,300			40,262			15,994
Undistributed earnings reallocated to unvested restricted stock		(12	)		(3	)		(18	)		—
Distributed and undistributed earnings to common shareholders – diluted	$	18,250		$	15,297		$	40,244		$	15,994
Weighted average shares outstanding – basic (1)		30,787,520			29,610,315			30,303,294			29,556,810
Weighted average shares outstanding – diluted		30,386,105			29,066,906			29,904,370			29,023,002
Earnings per common share – basic	$	0.60		$	0.53		$	1.35		$	0.55
Earnings per common share – diluted		0.60			0.53			1.35			0.55
Earnings per unvested restricted stock share – basic		0.54			0.51			1.27			0.55
Earnings per unvested restricted stock share – diluted		0.56			0.52			1.31			0.55

(1) Weighted average basic shares outstanding include 527,605 and 567,162 shares of unvested restricted stock for the three months ended June 30, 2014 and 2013, respectively, and 535,442 and 565,860 shares for the six months ended June 30, 2014 and 2013, respectively.

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Additional information on the Company’s basic earnings per common share is shown in the following table.

	For the Three Months Ended June 30				For the Six Months Ended June 30
	2014		2013		2014		2013
(Dollars in thousands, except per share data)
Distributed earnings to common shareholders	$	11,184	$	9,914	$	21,214	$	19,810
Undistributed earnings (distributed capital) to common shareholders		7,078		5,386		19,048		(3,816	)
Total earnings to common shareholders	$	18,262	$	15,300	$	40,262	$	15,994
Distributed earnings to unvested restricted stock	$	175	$	188	$	359	$	387
Undistributed earnings (distributed capital) to unvested restricted stock		111		102		322		(74	)
Total earnings allocated to restricted stock	$	286	$	290	$	681	$	313
Distributed earnings per common share	$	0.37	$	0.34	$	0.71	$	0.68
Undistributed earnings (distributed capital) per common share		0.23		0.19		0.64		(0.13	)
Total earnings per common share – basic	$	0.60	$	0.53	$	1.35	$	0.55
Distributed earnings per unvested restricted stock share	$	0.33	$	0.33	$	0.67	$	0.68
Undistributed earnings (distributed capital) per unvested restricted stock share		0.21		0.18		0.60		(0.13	)
Total earnings per unvested restricted stock share – basic	$	0.54	$	0.51	$	1.27	$	0.55

For the three months ended June 30, 2014 and 2013, the calculations for basic shares outstanding exclude the weighted average shares owned by the Recognition and Retention Plan (“RRP”) of 629,055 and 652,683, respectively, and are adjusted for the weighted average shares in treasury stock of 1,861,247 and 2,221,550, respectively. For the six months ended June 30, 2014 and 2013, basic shares outstanding exclude 634,883 and 647,332 shares owned by the RRP, respectively, and are adjusted for 1,933,367 and 2,279,103 shares, respectively, of weighted average shares of treasury stock.

The effects from the assumed exercises of 11,623 and 792,893 stock options were not included in the computation of diluted earnings per share for the three months ended June 30, 2014 and 2013, respectively, because such amounts would have had an antidilutive effect on earnings per common share. For the six months ended June 30, 2014 and 2013, the effects from the assumed exercise of 11,623 and 787,893 stock options, respectively, was not included in the computation of diluted earnings per share because such amounts would have had an antidilutive effect on earnings per common share.

NOTE 4 – ACQUISITION ACTIVITY

Acquisition of Certain Assets and Liabilities of Trust One Bank

On January 17, 2014, IBERIABANK acquired certain assets and assumed certain liabilities of the Memphis, Tennessee operations of Trust One Bank, a division of Synovus Bank (hereby referred to as “Trust One-Memphis”). Under terms of the agreement, Synovus Bank paid IBERIABANK $91.6 million in cash to acquire four Trust One-Memphis branches in the Memphis, Tennessee market, which resulted in goodwill of $8.4 million. With this acquisition, IBERIABANK expanded its presence in the Memphis, Tennessee Metropolitan Statistical Area (“MSA”) through the addition of four branches and an experienced in-market team that enhances IBERIABANK’s ability to compete in that market.

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Acquisition of Teche Holding Company

On May 31, 2014, the Company acquired Teche Holding Company (“Teche”), the holding company of Teche Federal Bank, a New Iberia, Louisiana-based commercial bank servicing south Louisiana. Under terms of the agreement, for each share of Teche stock outstanding, Teche shareholders received 1.162 shares of the Company’s common stock, as well as a cash payment for any fractional share and unexercised option to purchase Teche stock. The Company acquired all of the outstanding common stock of the former Teche shareholders for total consideration of $156.7 million, which resulted in goodwill of $84.4 million, as shown in the table below. With this acquisition, IBERIABANK expanded its presence in the Acadiana region of Louisiana through the addition of 20 branches and an experienced in-market team that enhances IBERIABANK’s ability to compete in that market. The Company projects cost savings will be recognized in future periods through the elimination of redundant operations. The following summarizes consideration paid and a preliminary allocation of purchase price to net assets acquired.

(Dollars in thousands)	Number of Shares		Amount
Equity consideration
Common stock issued		2,498,007	$	156,026
Total equity consideration				156,026
Non-Equity consideration
Cash				714
Total consideration paid				156,740
Fair value of net assets assumed including identifiable intangible assets				72,308
Goodwill			$	84,432

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Acquisition of First Private Holdings, Inc.

On June 30, 2014, the Company acquired First Private Holdings, Inc. (“First Private”), the holding company of First Private Bank of Texas, a Dallas, Texas-based commercial bank with four branch locations, including two mobile branches. Under terms of the agreement, for each share of First Private stock outstanding, First Private shareholders received 0.27 of a share of the Company’s common stock, as well as a cash payment for any fractional share. The Company acquired all of the outstanding common stock of the former First Private shareholders for total consideration of $58.6 million, which resulted in goodwill of $28.7 million, as shown in the table below. With this acquisition, IBERIABANK expanded its presence into the Dallas, Texas MSA through the addition of branches and an experienced in-market team. The Company projects cost savings will be recognized in future periods through the elimination of redundant operations. The following summarizes consideration paid and a preliminary allocation of purchase price to net assets acquired.

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(Dollars in thousands)	Number of Shares		Amount
Equity consideration
Common stock issued		847,509	$	58,639
Total equity consideration				58,639
Non-Equity consideration
Cash				1
Total consideration paid				58,640
Fair value of net liabilities assumed including identifiable intangible assets				29,980
Goodwill			$	28,660

The Company accounted for the aforementioned business combinations as purchase business combinations. Accordingly, the purchase price is allocated to the fair value of the assets acquired and liabilities assumed as of the date of acquisition. The following purchase price allocations on these acquisitions are preliminary and will be finalized upon the receipt of final valuations on certain assets and liabilities. Upon receipt of final fair value estimates, which must be within one year of the acquisition dates, the Company will make any final adjustments to the purchase price allocation and retrospectively adjust any goodwill recorded. Material adjustments to acquisition date estimated fair values would be recorded in the period in which the acquisition occurred, and as a result, previously reported results are subject to change. Net assets acquired subject to finalization of fair value estimates include, but are not limited to, loans and core deposit intangibles and any related adjustments to deferred taxes associated with these fair value adjustments. Determining the fair value of assets and liabilities, particularly illiquid assets and liabilities, is a complicated process involving significant judgment regarding estimates and assumptions used to calculate estimated fair value. Fair value adjustments based on updated estimates could materially affect the goodwill recorded on the acquisition. The Company may incur losses on the acquired loans that are materially different from losses the Company originally projected.

The acquired assets and liabilities, as well as the preliminary adjustments to record the assets and liabilities at their estimated fair values, are presented in the following table.

Trust One-Memphis

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	92,060	$	—		$	92,060
Loans		88,179		(1,290	)(1)		86,889
Other real estate owned		1,325		—			1,325
Core deposit intangible		—		2,597	(2)		2,597
Other assets		368		—			368
Total Assets	$	181,932	$	1,307		$	183,239
Liabilities
Interest-bearing deposits	$	164,942	$	—		$	164,942
Non-interest-bearing deposits		26,373		—			26,373
Deferred tax liability		—		654	(3)		654
Other liabilities		84		—			84
Total Liabilities	$	191,399	$	654		$	192,053

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment of the book value of Trust One-Memphis loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽²⁾  The amount represents the estimated fair value of the core deposit intangible asset created in the acquisition.

⁽³⁾  The amount represents the deferred tax liability recognized on the fair value adjustment of Trust One-Memphis acquired assets and assumed liabilities.

Teche

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	71,606	$	—		$	71,606
Investment securities		24,077		1,092	(1)		25,169
Loans		716,587		(16,637	)(2)		699,950
Other real estate owned		329		—			329
Core deposit intangible		—		2,055	(3)		2,055
Deferred tax asset		1,057		7,373	(4)		8,430
Other assets		56,708		(6,512	)(5)		50,196
Total Assets	$	870,364	$	(12,629	)	$	857,735
Liabilities
Interest-bearing deposits	$	520,446	$	902	(6)	$	521,348
Non-interest-bearing deposits		118,256		—			118,256
Borrowings		134,228		6,304	(7)		140,532
Other liabilities		5,291		—			5,291
Total Liabilities	$	778,221	$	7,206		$	785,427

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment to the book value of Teche’s investments to their estimated fair value based on fair values on the date of acquisition.

⁽²⁾  The amount represents the adjustment of the book value of Teche loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽³⁾  The amount represents the estimated fair value of the core deposit intangible asset created in the acquisition.

⁽⁴⁾  The amount represents the deferred tax asset recognized on the fair value adjustment of Teche acquired assets and assumed liabilities.

⁽⁵⁾  The amount represents the write down of the book value of Teche’s property, equipment, and other assets to their estimated fair value at the acquisition date.

⁽⁶⁾  The adjustment is necessary because the weighted average interest rate of Teche’s deposits exceeded the cost of similar funding at the time of acquisition. The fair value adjustment will be amortized to reduce future interest expense over the life of the portfolio, which is estimated at 85 months.

⁽⁷⁾  The amount represents the estimated fair value adjustment for the debt assumed, primarily driven by the estimated market interest rate on the debt relative to the stated interest rate.

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First Private

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	26,621	$	—		$	26,621
Investment securities		19,110		—			19,110
Loans		294,425		4,207	(1)		298,632
Other real estate owned		—		—			—
Core deposit intangible		—		506	(2)		506
Deferred tax asset (liability)		530		(1,676	) (3)		(1,146	)
Other assets		5,230		—			5,230
Total Assets	$	345,916	$	3,037		$	348,953
Liabilities
Interest-bearing deposits	$	261,713	$	220	(4)	$	261,933
Non-interest-bearing deposits		50,333		—			50,333
Borrowings		6,451		—			6,451
Other liabilities		256		—			256
Total Liabilities	$	318,753	$	220		$	318,973

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment of the book value of First Private loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽²⁾  The amount represents the fair value of the core deposit intangible asset created in the acquisition.

⁽³⁾  The amount represents the deferred tax liability recognized on the fair value adjustment of First Private acquired assets and assumed liabilities.

⁽⁴⁾  The adjustment is necessary because the weighted average interest rate of First Private’s deposits exceeded the cost of similar funding at the time of acquisition.

Acquisition of The Title Company LLC

On February 24, 2014, the Company’s subsidiary, LTC, acquired The Title Company LLC. Under terms of the agreement, LTC paid $0.4 million in cash to acquire a title office in Baton Rouge, Louisiana, which resulted in goodwill of $0.2 million. The acquisition was accounted for under the purchase method of accounting in accordance with ASC Topic 805. Purchased assets were recorded at their acquisition date fair values. Identifiable intangible assets were recorded at fair value. Because the consideration paid was greater than the net fair value of the acquired assets, the Company recorded goodwill as part of the acquisition. The goodwill recognized was the result of LTC’s expanded presence into the Baton Rouge, Louisiana MSA and an experienced in-market team that enhances its ability to compete in that market. As part of the acquisition, LTC also acquired or created the following other assets:

(Dollars in thousands)	Amount
Non-compete agreement	$	63
Title plant		14
Other intangible assets		75
Other assets		2
Total Assets	$	154

15

Acquisition of Louisiana Abstract and Title, LLC

On May 1, 2014, LTC acquired Louisiana Abstract and Title, LLC. Under terms of the agreement, LTC paid $0.2 million in cash to acquire a title office in Baton Rouge, Louisiana, which resulted in goodwill of $0.2 million. In addition, the agreement provides for potential additional cash consideration based on earnings over a four-year period after the acquisition. The acquisition was accounted for under the purchase method of accounting in accordance with ASC Topic 805. Purchased assets were recorded at their acquisition date fair values. Identifiable intangible assets were recorded at fair value. Because the consideration paid was greater than the net fair value of the acquired assets, the Company recorded goodwill as part of the acquisition. The goodwill recognized was the result of LTC’s expanded presence in the Shreveport, Louisiana MSA and an experienced in-market team that enhances its ability to compete in that market. As part of the acquisition, LTC also acquired or created the following other assets:

(Dollars in thousands)	Amount
Non-compete agreement	$	100
Title plant		9
Other intangible assets		130
Other assets		6
Total Assets	$	245

Supplemental unaudited pro forma information

The following unaudited pro forma information for the six months ended June 30, 2013 reflects the Company’s estimated consolidated results of operations as if the acquisitions of Trust One-Memphis, Teche, and First Private occurred at January 1, 2013, unadjusted for potential cost savings and preliminary purchase price adjustments.

(Dollars in thousands, except per share data)	2013
Interest and non-interest income	$	332,674
Net income		20,022
Earnings per share – basic		0.68
Earnings per share – diluted		0.68

The Company’s consolidated financial statements as of and for the six months ended June 30, 2014 include the operating results of the acquired assets and assumed liabilities for the days subsequent to the respective acquisition dates. Due to the system conversion of the acquired entities throughout the current six-month period and subsequent integration of the operating activities of the acquired branches into existing Company markets, historical reporting for the former Trust One-Memphis, Teche, and First Private branches is impracticable and thus disclosure of the revenue from the assets acquired and income before income taxes is impracticable for the period subsequent to acquisition.

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NOTE 5 – INVESTMENT SECURITIES

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

	June 30, 2014
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	371,703	$	1,702	$	(6,011	)	$	367,394
Obligations of state and political obligations		98,833		3,944		(170	)		102,607
Mortgage-backed securities		1,530,366		16,456		(9,357	)		1,537,465
Other securities		1,460		27		—			1,487
Total securities available for sale	$	2,002,362	$	22,129	$	(15,538	)	$	2,008,953
Securities held to maturity:
U.S. Government-sponsored enterprise obligations	$	17,499	$	214	$	—		$	17,713
Obligations of state and political obligations		82,073		2,831		(324	)		84,580
Mortgage-backed securities		32,673		234		(1,137	)		31,770
Total securities held to maturity	$	132,245	$	3,279	$	(1,461	)	$	134,063

	December 31, 2013
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	406,092	$	1,382	$	(11,913	)	$	395,561
Obligations of state and political obligations		105,300		2,435		(256	)		107,479
Mortgage-backed securities		1,450,194		10,031		(27,947	)		1,432,278
Other securities		1,460		19		—			1,479
Total securities available for sale	$	1,963,046	$	13,867	$	(40,116	)	$	1,936,797
Securities held to maturity:
U.S. Government-sponsored enterprise obligations	$	34,478	$	484	$	—		$	34,962
Obligations of state and political obligations		84,290		1,463		(1,624	)		84,129
Mortgage-backed securities		35,341		258		(2,124	)		33,475
Total securities held to maturity	$	154,109	$	2,205	$	(3,748	)	$	152,566

Securities with carrying values of $1.5 billion were pledged to secure public deposits and other borrowings at both June 30, 2014 and December 31, 2013.

Management evaluates securities for other-than-temporary impairment at least quarterly, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to 1) the length of time and extent to which the estimated fair value has been less than amortized cost, 2) the financial condition and near-term prospects of the issuer, and 3) the intent of the Company to retain the investment for a period of time sufficient to allow for any anticipated recovery in estimated fair value above amortized cost. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies and whether downgrades by bond rating agencies have occurred, as well as review of issuer financial statements and industry analysts’ reports.

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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, is as follows:

	June 30, 2014
	Less Than Twelve Months					Over Twelve Months					Total
(Dollars in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	—		$	—	$	(6,011	)	$	258,673	$	(6,011	)	$	258,673
Obligations of state and political obligations		—			—		(170	)		1,437		(170	)		1,437
Mortgage-backed securities		(869	)		182,114		(8,488	)		354,316		(9,357	)		536,430
Total securities available for sale	$	(869	)	$	182,114	$	(14,669	)	$	614,426	$	(15,538	)	$	796,540
Securities held to maturity:
Obligations of state and political obligations	$	—		$	569	$	(324	)	$	13,937	$	(324	)	$	14,506
Mortgage-backed securities		—			—		(1,137	)		24,785		(1,137	)		24,785
Total securities held to maturity	$	—		$	569	$	(1,461	)	$	38,722	$	(1,461	)	$	39,291

	December 31, 2013
	Less Than Twelve Months					Over Twelve Months					Total
(Dollars in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	(11,764	)	$	298,515	$	(149	)	$	5,515	$	(11,913	)	$	304,030
Obligations of state and political obligations		(30	)		2,415		(226	)		1,047		(256	)		3,462
Mortgage-backed securities		(23,749	)		864,899		(4,198	)		81,870		(27,947	)		946,769
Total securities available for sale	$	(35,543	)	$	1,165,829	$	(4,573	)	$	88,432	$	(40,116	)	$	1,254,261
Securities held to maturity:
Obligations of state and political obligations	$	(1,181	)	$	29,355	$	(443	)	$	6,240	$	(1,624	)	$	35,595
Mortgage-backed securities		(952	)		12,913		(1,172	)		11,616		(2,124	)		24,529
Total securities held to maturity	$	(2,133	)	$	42,268	$	(1,615	)	$	17,856	$	(3,748	)	$	60,124

The Company assessed the nature of the losses in its portfolio as of June 30, 2014 and December, 31, 2013 to determine if there are losses that should be deemed other-than-temporary. In its analysis of these securities, management considered numerous factors to determine whether there were instances where the amortized cost basis of the debt securities would not be fully recoverable, including, but not limited to:

• The length of time and extent to which the estimated fair value of the securities was less than their amortized cost,

• Whether adverse conditions were present in the operations, geographic area, or industry of the issuer,

• The payment structure of the security, including scheduled interest and principal payments, including the issuer’s failures to make scheduled payments, if any, and the likelihood of failure to make scheduled payments in the future,

• Changes to the rating of the security by a rating agency, and

• Subsequent recoveries or additional declines in fair value after the balance sheet date.

Management believes it has considered these factors, as well as all relevant information available, when determining the expected future cash flows of the securities in question. Except for the bond discussed below, in each instance, management has determined the cost basis of the securities would be fully recoverable. Management also has the intent to hold debt securities until their maturity or anticipated recovery if the security is classified as available for sale. In addition, management does not believe the Company will be required to sell debt securities before the anticipated recovery of the amortized cost basis of the security.

At June 30, 2014, 113 debt securities had unrealized losses of 1.99% of the securities’ amortized cost basis and 0.80% of the Company’s total amortized cost basis. At December 31, 2013, 207 debt securities had unrealized losses of 3.23% of the securities’ amortized cost basis and 2.07% of the Company’s total amortized cost basis. The unrealized losses for each of the securities related to market interest rate changes. Additional information on securities that have been in a continuous loss position for over twelve months at June 30, 2014 and December 31, 2013 is presented in the following table.

18

(Dollars in thousands)	June 30, 2014		December 31, 2013
Number of securities
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae		80		20
Issued by political subdivisions		11		5
		91		25
Amortized Cost Basis
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae	$	653,411	$	104,520
Issued by political subdivisions		15,867		7,956
	$	669,278	$	112,476
Unrealized Loss
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae	$	15,636	$	5,519
Issued by political subdivisions		494		669
	$	16,130	$	6,188

The Fannie Mae, Freddie Mac, and Ginnie Mae securities are rated AA+ by S&P and Aaa by Moodys. Eleven of the securities in a continuous loss position for over twelve months were issued by political subdivisions. Ten of the securities issued by political subdivisions have credit ratings by S&P ranging from A+ to AAA and credit ratings from Moody’s ranging from A2 to Aaa. The remaining security in a continuous unrealized loss position for over twelve months was issued by a political subdivision and is discussed in further detail below.

Prior to 2013, management assessed the operating environment of a bond issuer as adverse and concluded that the Company had one unrated revenue municipal bond that warranted an other-than-temporary impairment charge. The specific impairment was related to the loss of the contracted revenue source required for bond repayment. The Company determined the impairment charge using observable market data for similar assets, including third party valuation of the security, as well as information from unobservable inputs, including its best estimate of the recoverability of the amortized cost of the security as outlined above. Changes to the unobservable inputs used by the Company would have resulted in a higher or lower impairment charge, but the unobservable inputs were not highly sensitive and would not result in a material difference in the impairment charge recorded. The Company recorded total impairment of 50% of the par value of the bond and provided a fair value of the bonds that was consistent with current market pricing. During 2014, the Company continued to analyze the operating environment of the bond as it did in prior periods and noted no further deterioration in the operating environment of the bond issuer.

During the six months ended June 30, 2014 and 2013, there was no activity related to credit losses on the other-than temporarily impaired investment security where a portion of the unrealized loss was recognized in other comprehensive income.

As a result of the Company’s analysis, no other declines in the estimated fair value of the Company’s investment securities were deemed to be other-than-temporary at June 30, 2014 or December 31, 2013.

The amortized cost and estimated fair value of investment securities by maturity at June 30, 2014 are shown 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
(Dollars in thousands)	Weighted Average Yield			Amortized Cost		Estimated Fair Value		Weighted Average Yield			Amortized Cost		Estimated Fair Value
Within one year or less		2.00	%	$	16,390	$	16,445		2.11	%	$	17,499	$	17,713
One through five years		1.55			262,494		263,033		3.24			13,510		13,867
After five through ten years		2.10			504,532		508,167		2.92			20,495		21,200
Over ten years		2.20			1,218,946		1,221,308		3.10			80,741		81,283
Total		2.09	%	$	2,002,362	$	2,008,953		2.95	%	$	132,245	$	134,063

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 June 30					Six Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013
Realized gains	$	8	$	4		$	27	$	2,369
Realized losses		—		(70	)		—		(108	)
Net realized gains (losses)	$	8	$	(66	)	$	27	$	2,261

19

In addition to the gains above, the Company realized certain immaterial gains on calls of held to maturity securities.

Other Equity Securities

At June 30, 2014 and December 31, 2013, the Company included the following securities in “Other assets” on the consolidated balance sheets:

(Dollars in thousands)	June 30 2014		December 31 2013
Federal Home Loan Bank (FHLB) stock	$	44,715	$	24,369
Federal Reserve Bank (FRB) stock		28,098		28,098
Other investments		3,306		1,306
Total	$	76,119	$	53,773

20

NOTE 6 – LOANS RECEIVABLE

Loans receivable consist of the following, segregated into non-covered and covered loans, for the periods indicated:

	June 30, 2014
(Dollars in thousands)	Non-covered loans		Covered loans		Total
Commercial loans:
Real estate	$	3,949,444	$	294,115	$	4,243,559
Business		3,095,087		35,902		3,130,989
		7,044,531		330,017		7,374,548
Residential mortgage loans:
Residential 1-4 family		926,972		141,613		1,068,585
Construction / Owner Occupied		56,039		—		56,039
		983,011		141,613		1,124,624
Consumer and other loans:
Home equity		1,357,073		110,068		1,467,141
Indirect automobile		392,355		—		392,355
Other		536,119		3,740		539,859
		2,285,547		113,808		2,399,355
Total	$	10,313,089	$	585,438	$	10,898,527

	December 31, 2013
(Dollars in thousands)	Non-covered loans		Covered loans		Total
Commercial loans:
Real estate	$	3,479,973	$	387,332	$	3,867,305
Business		2,959,088		37,025		2,996,113
		6,439,061		424,357		6,863,418
Residential mortgage loans:
Residential 1-4 family		423,057		154,025		577,082
Construction / Owner Occupied		9,450		—		9,450
		432,507		154,025		586,532
Consumer and other loans:
Home equity		1,154,670		137,122		1,291,792
Indirect automobile		375,236		—		375,236
Other		370,752		4,289		375,041
		1,900,658		141,411		2,042,069
Total	$	8,772,226	$	719,793	$	9,492,019

In 2009, the Company acquired substantially all of the assets and liabilities of CapitalSouth Bank (“CSB”), and certain assets deposits, and other liabilities of Orion Bank (“Orion”) and Century Bank (“Century”). In 2010, the Company acquired certain assets and assumed certain deposit and other liabilities of Sterling Bank (“Sterling”). Substantially all of the loans and foreclosed real estate that were acquired in these transactions are covered by loss sharing agreements between the FDIC and IBERIABANK, which afford IBERIABANK loss protection. Refer to Note 8 for additional information regarding the Company’s loss sharing agreements.

Because of the loss protection provided by the FDIC, the risks of the CSB, Orion, Century, and Sterling loans and foreclosed real estate are significantly different from those assets not covered under the loss share agreements. Accordingly, the Company presents loans subject to the loss share agreements as “covered loans” and loans that are not subject to the loss share agreements as “non-covered loans.”

Deferred loan origination fees were $19.1 million and $18.6 million and deferred loan expenses were $8.4 million and $7.6 million at June 30, 2014 and December 31, 2013, respectively. 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 June 30, 2014 and December 31, 2013, overdrafts of $6.4 million and $3.1 million, respectively, have been reclassified to loans receivable.

Loans with carrying values of $2.4 billion and $2.3 billion were pledged to secure public deposits and other borrowings at June 30, 2014 and December 31, 2013, respectively.

21

Non-covered Loans

The following tables provide an analysis of the aging of non-covered loans as of June 30, 2014 and December 31, 2013. Because of the difference in accounting for acquired loans, the tables below further segregate the Company’s non-covered loans receivable between acquired loans and loans originated by the Company. For purposes of the following tables, subprime mortgage loans are defined as the Company’s mortgage loans that have FICO scores that are less than 620 at the time of origination or were purchased outside of a business combination.

	June 30, 2014
	Non-covered loans excluding acquired loans
	Past Due (1)								Current		Total Non-covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	56	$	223	$	1,349	$	1,628	$	591,233	$	592,861	$	—
Commercial real estate – other		387		112		4,331		4,830		2,828,295		2,833,125		—
Commercial business		3,742		56		4,191		7,989		2,953,471		2,961,460		—
Residential prime		2,581		1,455		10,593		14,629		326,077		340,706		20
Residential subprime		—		—		3,111		3,111		115,835		118,946		—
Home equity		1,518		703		7,949		10,170		1,163,216		1,173,386		—
Indirect automobile		1,611		322		1,192		3,125		388,356		391,481		—
Credit card		282		158		949		1,389		63,871		65,260		—
Other		567		209		542		1,318		356,189		357,507		—
Total	$	10,744	$	3,238	$	34,207	$	48,189	$	8,786,543	$	8,834,732	$	20

	December 31, 2013
	Non-covered loans excluding acquired loans
	Past Due (1)								Current		Total Non-covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	—	$	—	$	1,803	$	1,803	$	381,292	$	383,095	$	—
Commercial real estate – other		6,098		5,630		7,650		19,378		2,732,431		2,751,809		2
Commercial business		2,117		423		15,020		17,560		2,888,491		2,906,051		—
Residential prime		1,104		852		9,684		11,640		286,167		297,807		1,073
Residential subprime		—		—		1,626		1,626		114,939		116,565		—
Home equity		1,956		569		6,808		9,333		1,091,894		1,101,227		—
Indirect automobile		1,427		293		1,275		2,995		370,388		373,383		—
Credit card		266		92		411		769		62,873		63,642		—
Other		458		106		485		1,049		293,693		294,742		—
Total	$	13,426	$	7,965	$	44,762	$	66,153	$	8,222,168	$	8,288,321	$	1,075

⁽¹⁾  Past due loans include loans on nonaccrual status as of the period indicated. Nonaccrual loans are presented separately in the “Nonaccrual Loans” section below.

22

	June 30, 2014
	Non-covered acquired loans
	Past Due (1)								Current		Discount/ Premium			Total Non- covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	—	$	597	$	2,183	$	2,780	$	35,403	$	(2,536	)	$	35,647	$	2,090
Commercial real estate – other		3,584		628		23,144		27,356		511,672		(51,217	)		487,811		21,592
Commercial business		1,944		281		2,212		4,437		136,130		(6,941	)		133,626		2,172
Residential prime		331		1,378		6,703		8,412		508,678		6,269			523,359		525
Home equity		1,260		622		8,667		10,549		180,703		(7,565	)		183,687		4,629
Indirect automobile		28		—		59		87		850		(63	)		874		59
Other		1,004		395		2,096		3,495		122,011		(12,154	)		113,352		343
Total	$	8,151	$	3,901	$	45,064	$	57,116	$	1,495,447	$	(74,207	)	$	1,478,356	$	31,410

	December 31, 2013
	Non-covered acquired loans
	Past Due (1)								Current		Discount/ Premium			Total Non- covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	388	$	—	$	2,542	$	2,930	$	19,833	$	(2,532	)	$	20,231	$	2,542
Commercial real estate – other		1,798		1,963		27,967		31,728		345,286		(52,176	)		324,838		27,967
Commercial business		544		—		1,218		1,762		54,189		(2,914	)		53,037		1,218
Residential prime		—		—		226		226		18,796		(887	)		18,135		226
Home equity		313		516		4,242		5,071		53,995		(5,623	)		53,443		4,242
Indirect automobile		33		—		95		128		1,725		—			1,853		95
Other		175		101		975		1,251		12,598		(1,481	)		12,368		975
Total	$	3,251	$	2,580	$	37,265	$	43,096	$	506,422	$	(65,613	)	$	483,905	$	37,265

⁽¹⁾  Past due information includes acquired loans at the gross loan balance, prior to application of discounts.

Non-accrual Loans

The following table provides the recorded investment of non-covered loans, excluding acquired loans, on non-accrual status at June 30, 2014 and December 31, 2013.

(Dollars in thousands)	June 30 2014		December 31 2013
Commercial real estate construction	$	1,349	$	1,803
Commercial real estate – other		4,331		7,648
Commercial business		4,191		15,020
Residential prime		10,573		8,611
Residential subprime		3,111		1,626
Home equity		7,949		6,808
Indirect automobile		1,192		1,275
Credit card		949		411
Other		542		485
Total	$	34,187	$	43,687

23

Covered Loans

The carrying amount of the acquired covered loans at June 30, 2014 and December 31, 2013 consisted of loans determined to be impaired at the acquisition date, which are accounted for in accordance with ASC Topic 310-30, and loans that were considered to be performing at the acquisition date, accounted for by analogy to ASC Topic 310-30, as detailed in the following tables.

	June 30, 2014
(Dollars in thousands)	Acquired Impaired Loans		Acquired Performing Loans		Total Covered Loans
Commercial loans:
Real estate	$	6,523	$	287,592	$	294,115
Business		—		35,902		35,902
		6,523		323,494		330,017
Residential mortgage loans:
Residential 1-4 family		28,273		113,340		141,613
Construction / Owner Occupied		—		—		—
		28,273		113,340		141,613
Consumer and other loans:
Home equity		13,879		96,189		110,068
Indirect automobile		—		—		—
Other		596		3,145		3,741
		14,475		99,334		113,809
Total	$	49,271	$	536,168	$	585,439

	December 31, 2013
(Dollars in thousands)	Acquired Impaired Loans		Acquired Performing Loans		Total Covered Loans
Commercial loans:
Real estate	$	14,904	$	372,428	$	387,332
Business		—		37,025		37,025
		14,904		409,453		424,357
Residential mortgage loans:
Residential 1-4 family		28,223		125,802		154,025
Construction / Owner Occupied		—		—		—
		28,223		125,802		154,025
Consumer and other loans:
Home equity		21,768		115,354		137,122
Indirect automobile		—		—		—
Other		1,182		3,107		4,289
		22,950		118,461		141,411
Total	$	66,077	$	653,716	$	719,793

24

Loans Acquired

The Company acquired loans (both covered and non-covered) through previous acquisitions, which are subject to ASC Topic 310-30.

As discussed in Note 4, during 2014, the Company acquired loans of $86.9 million from Trust One-Memphis, $700.0 million from Teche, and $298.6 million for First Private in the current period. $1.0 billion in loans acquired are accounted for under ASC Topic 310-10, while the carrying amounts of the loans acquired in the current period subject to ASC Topic 310-30 are detailed in the following table as of the purchase date. The allocation of loans acquired from both Teche and First Private between loans subject to ASC Topic 310-30 and those subject to ASC Topic 310-10 is preliminary and subject to change up to one year after the acquisition dates as information on these loans becomes available.

(Dollars in thousands)	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Contractually required principal and interest at acquisition	$	82,967		$	15,130		$	98,097
Nonaccretable difference (expected losses and foregone interest)		(4,197	)		(361	)		(4,558	)
Cash flows expected to be collected at acquisition		78,770			14,769			93,539
Accretable yield		(8,242	)		(1,536	)		(9,778	)
Basis in acquired loans at acquisition	$	70,528		$	13,233		$	83,761

The following is a summary of changes in the accretable difference of acquired loans during the six months ended June 30, 2014 and 2013.

	June 30, 2014
(Dollars in thousands)	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Balance at beginning of period	$	78,349		$	276,543		$	354,892
Acquisition		8,242			1,536			9,778
Transfers from nonaccretable difference to accretable yield		4,128			13,517			17,645
Accretion		(4,089	)		(50,429	)		(54,518	)
Changes in expected cash flows not affecting nonaccretable differences (1)		(12,176	)		12,720			544
Balance at end of period	$	74,454		$	253,887		$	328,341

	June 30, 2013
	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Balance at beginning of period	$	76,623		$	279,770		$	356,393
Transfers from nonaccretable difference to accretable yield		6,368			32,039			38,407
Accretion		(10,973	)		(81,227	)		(92,200	)
Changes in expected cash flows not affecting nonaccretable differences (1)		4,158			70,721			74,879
Balance at end of period	$	76,176		$	301,303		$	377,479

(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.

25

Troubled Debt Restructurings

Information about the Company’s troubled debt restructurings (“TDRs”) at June 30, 2014 and 2013 is presented in the following tables. The Company excludes as TDRs modifications of loans that are accounted for within a pool under ASC Topic 310-30, which include the covered loans above, as well as acquired loans. 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 covered and acquired loans that would otherwise meet the criteria for classification as a TDR are excluded from the tables below.

	June 30, 2014								June 30, 2013
	Accruing Loans								Accruing Loans
(Dollars in thousands)	Current		Past Due > 30 days		Nonaccrual TDRs		Total TDRs		Current		Past Due > 30 days		Nonaccrual TDRs		Total TDRs
Commercial real estate construction	$	—	$	—	$	—	$	—	$	—		—		—		—
Commercial real estate – other		378		—		1,634		2,012		677		—		8,064		8,741
Commercial business		811		—		2,342		3,153		1,135		—		281		1,416
Residential prime		—		—		—		—		—		—		—		—
Residential subprime		—		—		—		—		—		—		—		—
Home equity		—		—		248		248		—		—		268		268
Indirect automobile		—		—		—		—		—		—		—		—
Credit card		—		—		—		—		—		—		—		—
Other		—		—		—		—		—		—		—		—
Total	$	1,189	$	—	$	4,224	$	5,413	$	1,812	$	—	$	8,613	$	10,425

At June 30, 2014, there were no TDRs that occurred during the first six months through modification of the original loan terms. TDRs totaling $1.5 million occurred during the six-month period ending June 30, 2013 and were subsequently charged off during the same period. The following table provides information on how the TDRs were modified during the six months ended June 30:

(Dollars in thousands)	2014		2013
Extended maturities	$	—	$	—
Interest rate adjustment		—		—
Maturity and interest rate adjustment		—		1,545
Movement to or extension of interest-rate only payments		—		—
Forbearance		—		—
Other concession(s) (1)		—		—
Total	$	—	$	1,545

⁽¹⁾ Other concessions include concessions or a combination of concessions that do not consist of maturity extensions, interest rate adjustments, forbearance or covenant modifications.

26

Information about the Company’s TDRs occurring in these periods is presented in the following table.

	June 30, 2014						June 30, 2013
(In thousands, except number of loans)	Number of Loans		Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment  (1)		Number of Loans		Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment  (1)
Commercial real estate		—	$	—	$	—		1	$	1,545	$	1,545
Commercial business		—		—		—		—		—		—
Residential prime		—		—		—		—		—		—
Home Equity		—		—		—		—		—		—
Indirect automobile		—		—		—		—		—		—
Credit card		—		—		—		—		—		—
Other		—		—		—		—		—		—
Total		—	$	—	$	—		1	$	1,545	$	1,545

⁽¹⁾ Recorded investment includes any allowance for credit losses recorded on the TDRs at the dates indicated.

Information detailing non-covered TDRs that subsequently defaulted during the previous twelve months is presented in the following table. The Company has defined a default as any loan with a loan payment that is currently past due greater than 30 days, or was past due greater than 30 days at any point during the previous twelve months, or since the date of modification, whichever is shorter.

	June 30, 2014				June 30, 2013
(In thousands, except number of loans)	Number of Loans		Recorded Investment		Number of Loans		Recorded Investment
Commercial real estate		31	$	1,635		48	$	8,673
Commercial business		11		2,115		8		1,417
Residential prime		—		—		—		—
Home Equity		1		40		1		49
Indirect automobile		—		—		—		—
Credit card		—		—		—		—
Other		1		—		1		—
Total		44	$	3,790		58	$	10,139

27

NOTE 7 – ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY

Allowance for Credit Losses Activity

A summary of changes in the allowance for credit losses for the covered loan and non-covered loan portfolios for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
	Non-covered loans
(Dollars in thousands)	Excluding Acquired Loans			Acquired Loans			Covered Loans			Total
Allowance for credit losses
Balance at beginning of period	$	67,342		$	4,557		$	71,175		$	143,074
(Reversal of) Provision for loan losses before benefit attributable to FDIC loss share agreements		5,078			(1,085	)		(740	)		3,253
Adjustment attributable to FDIC loss share arrangements		—			—			3,598			3,598
Net (reversal of) provision for loan losses		5,078			(1,085	)		2,858			6,851
Adjustment attributable to FDIC loss share arrangements		—			—			(3,598	)		(3,598	)
Transfer of balance to OREO		—			(523	)		(5,085	)		(5,608	)
Loans charged-off		(5,198	)		(182	)		(5,393	)		(10,773	)
Recoveries		3,426			109			38			3,573
Balance at end of period	$	70,648		$	2,876		$	59,995		$	133,519
Reserve for unfunded lending commitments
Balance, beginning of period	$	11,147		$	—		$	—		$	11,147
Provision for unfunded lending commitments		113			—			—			113
Balance at end of period	$	11,260		$	—		$	—		$	11,260

	June 30, 2013
	Non-covered loans
	Excluding Acquired Loans			Acquired Loans			Covered Loans			Total
Allowance for loan losses
Balance at beginning of period	$	74,211		$	8,816		$	168,576		$	251,603
(Reversal of) Provision for loan losses before adjustment attributable to FDIC loss share agreements		(585	)		(1,009	)		(55,060	)		(56,654	)
Adjustment attributable to FDIC loss share arrangements		—			—			55,085			55,085
Net (reversal of) provision for loan losses		(585	)		(1,009	)		25			(1,569	)
Adjustment attributable to FDIC loss share arrangements		—			—			(55,085	)		(55,085	)
Transfer of balance to OREO		—			(973	)		(16,712	)		(17,685	)
Transfer of balance to the RULC		(9,828	)		—			—			(9,828	)
Loans charged-off		(4,249	)		—			(2,334	)		(6,583	)
Recoveries		2,050			—			—			2,050
Balance at end of period		61,599			6,834		$	94,470		$	162,903
Reserve for unfunded lending commitments
Balance, beginning of period		—			—			—			—
Transfer of balance from the allowance for loan losses		9,828			—			—			9,828
Provision for unfunded lending commitments		514			—			—			514
Balance at end of period	$	10,342		$	—		$	—		$	10,342

28

A summary of changes in the allowance for credit losses for non-covered loans, by loan portfolio type, for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for loan losses
Balance at beginning of period	$	26,590		$	28,515		$	2,546		$	14,248		$	—	$	71,899
(Reversal of) Provision for loan losses		585			782			171			2,455			—		3,993
Transfer of balance to OREO		(108	)		(162	)		(253	)		—			—		(523	)
Loans charged off		(660	)		(668	)		(435	)		(3,617	)		—		(5,380	)
Recoveries		1,699			65			114			1,657			—		3,535
Balance at end of period	$	28,106		$	28,532		$	2,143		$	14,743		$	—	$	73,524
Reserve for unfunded commitments
Balance at beginning of period	$	3,089		$	4,839		$	72		$	3,147		$	—	$	11,147
(Reversal of) Provision for unfunded commitments		112			(43	)		4			40			—		113
Balance at end of period	$	3,201		$	4,796		$	76		$	3,187		$	—	$	11,260
Allowance on loans individually evaluated for impairment	$	—		$	31		$	171		$	—		$	—	$	202
Allowance on loans collectively evaluated for impairment		28,105			28,501			1,972			14,743			—		73,321
Loans, net of unearned income:
Balance at end of period	$	3,949,444		$	3,095,087		$	983,011		$	2,285,547		$	—	$	10,313,089
Balance at end of period individually evaluated for impairment		5,976			4,563			1,058			248			—		11,845
Balance at end of period collectively evaluated for impairment		3,943,468			3,090,524			981,953			2,285,299			—		10,301,244
Balance at end of period acquired with deteriorated credit quality		30,799			5,496			1,209			3,803			—		41,307

	June 30, 2013
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for credit losses
Balance at beginning of period	$	38,264		$	28,721		$	2,125		$	13,917		$	—	$	83,027
(Reversal of) Provision for loan losses		(7,459	)		557			2,961			2,347			—		(1,594	)
Transfer of balance to OREO		(264	)		(90	)		(612	)		(7	)		—		(973	)
Transfer of balance to the RULC		(2,939	)		(3,497	)		(40	)		(3,352	)		—		(9,828	)
Loans charged off		(807	)		(395	)		(2,603	)		(444	)		—		(4,249	)
Recoveries		500			259			188			1,103			—		2,050
Balance at end of period	$	27,295		$	25,555		$	2,019		$	13,564		$	—	$	68,433
Reserve for unfunded commitments
Balance at beginning of period	$	—		$	—		$	—		$	—		$	—	$	—
Transfer of balance from the allowance for loan losses		2,939			3,497			40			3,352					9,828
(Reversal of) Provision for unfunded commitments		545			12			—			(43	)				514
Balance at end of period	$	3,484		$	3,509		$	40		$	3,309		$	—	$	10,342
Allowance on loans individually evaluated for impairment	$	72		$	116		$	137		$	—		$	—	$	325
Allowance on loans collectively evaluated for impairment		27,223			25,439			1,882			13,564			—		68,108
Loans, net of unearned income:
Balance at end of period	$	3,224,078		$	2,618,963		$	350,842		$	1,790,939		$	—	$	7,984,822
Balance at end of period individually evaluated for impairment		16,525			14,014			1,152			267			—		31,958
Balance at end of period collectively evaluated for impairment		3,207,553			2,604,949			349,690			1,790,672			—		7,952,864
Balance at end of period acquired with deteriorated credit quality		40,015			3,468			383			3,287			—		47,153

29

A summary of changes in the allowance for credit losses for covered loans, by loan portfolio type, for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for loan losses
Balance at beginning of period	$	38,772		$	5,380		$	10,889		$	16,134		$	—	$	71,175
Provision for loan losses		1,474			313			592			479			—		2,858
(Decrease) Increase in FDIC loss share receivable		(2,121	)		749			(2,100	)		(126	)		—		(3,598	)
Transfer of balance to OREO		(1,857	)		(1,162	)		(534	)		(1,532	)		—		(5,085	)
Loans charged off		(3,726	)		(1,589	)		—			(78	)		—		(5,393	)
Recoveries		38			—			—			—			—		38
Balance at end of period	$	32,580		$	3,691		$	8,847		$	14,877		$	—	$	59,995
Allowance on loans individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—	$	—
Allowance on loans collectively evaluated for impairment		32,580			3,691			8,847			14,877			—		59,995
Loans, net of unearned income:
Balance at end of period	$	294,115		$	35,902		$	141,613		$	113,809		$	—	$	585,439
Balance at end of period individually evaluated for impairment		—			—			—			—			—		—
Balance at end of period collectively evaluated for impairment		294,115			35,902			141,613			113,809			—		585,439
Balance at end of period acquired with deteriorated credit quality		6,523			—			28,273			14,475			—		49,271

	June 30, 2013
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for credit losses
Balance at beginning of period	$	100,871		$	11,375		$	22,566		$	33,764		$	—	$	168,576
Provision for loan losses		27			—			(1	)		(1	)		—		25
(Decrease) Increase in FDIC loss share receivable		(26,737	)		(2,672	)		(7,073	)		(18,603	)		—		(55,085	)
Transfer of balance to OREO		(12,178	)		(314	)		(4,221	)		1			—		(16,712	)
Loans charged off		(2,334	)		—			—			—			—		(2,334	)
Balance at end of period	$	59,649		$	8,389		$	11,271		$	15,161		$	—	$	94,470
Allowance on loans individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—	$	—
Allowance on loans collectively evaluated for impairment		59,649			8,389			11,271			15,161			—		94,470
Loans, net of unearned income:
Balance at end of period	$	520,160		$	68,957		$	167,654		$	161,444		$	—	$	918,215
Balance at end of period individually evaluated for impairment		—			—			—			—			—		—
Balance at end of period collectively evaluated for impairment		520,160			68,957			167,654			161,444			—		918,215
Balance at end of period acquired with deteriorated credit quality		132,565			2,005			17,969			19,504			—		172,043

30

Credit Quality

The Company’s investment in non-covered loans by credit quality indicator is presented in the following tables. Because of the difference in accounting for acquired loans, the tables below further segregate the Company’s non-covered loans receivable between acquired loans and loans that were not acquired. Loan premiums/discounts in the tables below represent the adjustment of non-covered acquired loans to fair value at the acquisition date, as adjusted for income accretion and changes in cash flow estimates in subsequent periods. Asset risk classifications for commercial loans reflect the classification as of June 30, 2014 and December 31, 2013, respectively. Credit quality information in the tables below include loans acquired at the gross loan balance, prior to the application of premiums/discounts, at June 30, 2014 and December 31, 2013.

	Non-covered loans excluding acquired loans
	June 30, 2014										December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Total		Pass		Special Mention		Substandard		Doubtful		Total
Commercial real estate construction	$	581,164	$	252	$	11,445	$	—	$	592,861	$	370,824	$	9,309	$	2,962	$	—	$	383,095
Commercial real estate – other		2,757,043		46,067		29,783		232		2,833,125		2,694,161		27,227		30,308		113		2,751,809
Commercial business		2,920,519		27,975		11,013		1,953		2,961,460		2,866,794		6,164		32,167		926		2,906,051
Total	$	6,258,726	$	74,294	$	52,241	$	2,185	$	6,387,446	$	5,931,779	$	42,700	$	65,437	$	1,039	$	6,040,955

	Non-covered loans excluding acquired loans
	June 30, 2014						December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Total		Current		30+ Days Past Due		Total
Residential prime	$	326,077	$	14,629	$	340,706	$	286,167	$	11,640	$	297,807
Residential subprime		115,835		3,111		118,946		114,939		1,626		116,565
Home equity		1,163,216		10,170		1,173,386		1,091,894		9,333		1,101,227
Indirect automobile		388,356		3,125		391,481		370,388		2,995		373,383
Credit card		63,871		1,389		65,260		62,873		769		63,642
Consumer – other		356,189		1,318		357,507		293,693		1,049		294,742
Total	$	2,413,544	$	33,742	$	2,447,286	$	2,219,954	$	27,412	$	2,247,366

	Non-covered acquired loans
	June 30, 2014													December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Discount			Total		Pass		Special Mention		Substandard		Doubtful		Discount			Total
Commercial real estate construction	$	31,269	$	1,541	$	5,373	$	—	$	(2,536	)	$	35,647	$	17,132	$	196	$	5,435	$	—	$	(2,532	)	$	20,231
Commercial real estate – other		482,016		13,816		42,866		330		(51,217	)		487,811		310,303		15,351		51,267		93		(52,176	)		324,838
Commercial business		132,151		2,916		4,571		929		(6,941	)		133,626		51,414		1,920		2,586		31		(2,914	)		53,037
Total	$	645,436	$	18,273	$	52,810	$	1,259	$	(60,694	)	$	657,084	$	378,849	$	17,467	$	59,288	$	124	$	(57,622	)	$	398,106

	Non-covered acquired loans
	June 30, 2014									December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Premium (discount)			Total		Current		30+ Days Past Due		Premium (discount)			Total
Residential prime	$	508,678	$	8,412	$	6,269		$	523,359	$	18,796	$	226	$	(887	)	$	18,135
Home equity		180,703		10,549		(7,565	)		183,687		53,995		5,071		(5,623	)		53,443
Indirect automobile		850		87		(63	)		874		1,725		128		—			1,853
Consumer – other		122,011		3,495		(12,154	)		113,352		12,598		1,251		(1,481	)		12,368
Total	$	812,242	$	22,543	$	(13,513	)	$	821,272	$	87,114	$	6,676	$	(7,991	)	$	85,799

The Company’s investment in covered loans by credit quality indicator is presented in the following table. Loan premiums/discounts in the tables below represent the adjustment of covered loans to fair value at the date, as adjusted for income accretion and changes in cash flow estimates in subsequent periods.

31

	Covered loans
	June 30, 2014											December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Total			Pass		Special Mention		Substandard		Doubtful		Total
Commercial real estate construction	$	39,482	$	1,997	$	14,476	$	—	$	55,955		$	42,886	$	7,401	$	23,891	$	497	$	74,675
Commercial real estate – other		119,489		40,291		104,527		821		265,128			148,579		49,699		144,680		3,267		346,225
Commercial business		25,592		930		9,334		46		35,902			30,710		780		14,556		984		47,030
		$184,563	$	43,218	$	128,337	$	867	$	356,985		$	222,175	$	57,880	$	183,127	$	4,748	$	467,930
Discount										(26,968	)										(43,573	)
Total									$	330,017										$	424,357

	Covered loans
	June 30, 2014									December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Premium (discount)			Total		Current		30+ Days Past Due		Premium (discount)			Total
Residential prime	$	149,945	$	30,381	$	(38,713	)	$	141,613	$	158,710	$	30,814	$	(35,499	)	$	154,025
Home equity		124,113		16,489		(30,534	)		110,068		143,236		35,811		(41,925	)		137,122
Credit card		582		50		—			632		648		31		—			679
Consumer – other		316		71		2,721			3,108		591		144		2,875			3,610
Total	$	274,956	$	46,991	$	(66,526	)	$	255,421	$	303,185	$	66,800	$	(74,549	)	$	295,436

32

Impaired Loans

Information on the Company’s investment in impaired loans is presented in the following tables as of and for the periods indicated.

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance			Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate	$	5,146	$	5,146	$	—		$	8,567	$	8,567	$	—
Commercial business		4,291		4,291		—			13,256		13,256		—
Home equity		248		248		—			258		258		—
With an allowance recorded:
Commercial real estate		905		912		(7	)		1,268		1,284		(16	)
Commercial business		675		710		(35	)		1,927		2,770		(843	)
Residential prime		10,362		10,573		(211	)		9,791		10,019		(228	)
Residential subprime		3,097		3,111		(14	)		1,617		1,626		(9	)
Home equity		7,663		7,701		(38	)		6,506		6,550		(44	)
Indirect automobile		1,185		1,192		(7	)		1,267		1,275		(8	)
Credit card		931		949		(18	)		404		411		(7	)
Other		537		542		(5	)		481		485		(4	)
Total	$	35,040	$	35,375	$	(335	)	$	45,342	$	46,501		(1,159	)
Total commercial loans		11,017		11,059		(42	)		25,018		25,877		(859	)
Total mortgage loans		13,459		13,684		(225	)		11,408		11,645		(237	)
Total consumer loans		10,564		10,632		(68	)		8,916		8,979		(63	)

	For the Three Months Ended June 30								For the Six Months Ended June 30
	2014				2013				2014				2013
(Dollars in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate	$	5,228	$	6	$	21,452	$	24	$	5,178	$	14	$	22,871	$	63
Commercial business		5,128		9		10,942		17		5,006		22		6,891		73
Home equity		252		—		—		—		250		—		—		—
With an allowance recorded:
Commercial real estate		925				194		—		926		1		306		1
Commercial business		1,078		4		447		3		1,061		13		449		8
Residential prime		10,911		—		8,613		—		10,131		6		8,913		13
Residential subprime		3,139		—		—		—		3,127		—		—		—
Home equity		7,825		—		7,356		—		7,749		5		7,541		7
Indirect automobile		1,310		—		1,228		—		1,300		6		1,386		6
Credit card		750		—		448		—		560		—		427		—
Other		575		—		527		—		571		5		597		1
Total	$	37,121	$	19	$	51,207	$	44	$	35,859	$	72	$	49,381	$	172
Total commercial loans		12,359		19		33,035		44		12,171		50		30,517		145
Total mortgage loans		14,050		—		8,613		—		13,258		6		8,913		13
Total consumer loans		10,712		—		9,559		—		10,430		16		9,951		14

33

As of June 30, 2014 and December 31, 2013, the Company was not committed to lend additional funds to any customer whose loan was classified as impaired or as a troubled debt restructuring.

NOTE 8 – LOSS SHARING AGREEMENTS AND FDIC LOSS SHARE RECEIVABLE

Loss Sharing Agreements

In 2009, the Company acquired substantially all of the assets and liabilities of CSB, and certain assets and assumed certain deposit and other liabilities of Orion and Century. In 2010, the Company acquired certain assets, deposits, and other liabilities of Sterling. Excluding consumer loans acquired from Sterling, the loans and foreclosed real estate that were acquired in these transactions are covered by loss share agreements between the FDIC and IBERIABANK, which afford IBERIABANK loss protection.

During the reimbursable loss periods, the FDIC will cover 80% of covered loan and foreclosed real estate losses up to certain thresholds for all four acquisitions, and 95% of losses that exceed contractual thresholds for CSB, Orion, and Century. The CSB reimbursable loss period ends during the third quarter of 2014 for all covered assets excluding single family residential assets and during the third quarter of 2019 for single family residential assets. The Century and Orion reimbursable loss periods end during the fourth quarter of 2014 for all covered assets excluding single family residential assets and during the fourth quarter of 2019 for single family residential assets. The Sterling reimbursable loss period ends during the third quarter of 2015 for all covered assets excluding single family residential assets and during the third quarter of 2020 for single family residential assets. To the extent that loss share coverage ends prior to triggering events on covered assets that would enable the Company to collect these amounts from the FDIC, future impairments may be required.

In addition, all covered assets, excluding single family residential assets, have a three year recovery period, which begins upon expiration of the reimbursable loss period. During the recovery periods, the Company must reimburse the FDIC for its share of any recovered losses, net of certain expenses, consistent with the covered loss reimbursement rates in effect during the recovery periods.

The Orion, Century, and Sterling loss share agreements include “clawback” provisions. The clawback provisions require the Company to make payments to the FDIC to the extent that specified cumulative loss floors are not met. For each of the three loss share agreements that contain clawback provisions, cumulative losses have exceeded the cumulative loss floors that would trigger a clawback payment. However, the sum of the historical and remaining projected losses and recoveries under one agreement is less than the clawback threshold stated in that agreement. The Company has a liability of $0.8 million at both June 30, 2014 and December 31, 2013, to reserve for the amount of consideration due to the FDIC based on projected net losses. Improvement in the performance of covered assets in excess of current expectations, particularly in regard to improvements in recoveries and/or reduced losses, through expiration of the recovery periods could result in reduced levels of cumulative losses that trigger the clawback provisions within any or all of the applicable loss share agreements.

34

FDIC loss share receivables

The Company recorded indemnification assets in the form of FDIC loss share receivables as of the acquisition date of each of the four banks covered by loss share agreements. At acquisition, the indemnification assets represented the fair value of the expected cash flows to be received from the FDIC under the loss share agreements. Subsequent to acquisition, the FDIC loss share receivables are updated to reflect changes in actual and expected amounts collectible adjusted for amortization.

The following is a summary of FDIC loss share receivables year-to-date activity:

	Six Months Ended June 30
(Dollars in thousands)	2014			2013
Balance at beginning of period	$	162,312		$	423,069
Change due to (reversal of) loan loss provision recorded on FDIC covered loans		(3,598	)		(55,085	)
Amortization		(36,273	)		(45,831	)
Submission of reimbursable losses to (recoveries payable to) the FDIC		2,215			(42,043	)
Impairment		(804	)		(31,813	)
Changes due to a change in cash flow assumptions on OREO and other changes		(3,320	)		(7,257	)
Balance at end of period	$	120,532		$	241,040

FDIC loss share receivables collectability assessment

The Company assesses the FDIC loss share receivables for collectability on a quarterly basis. Based on the collectability analysis completed for the six months ended June 30, 2014, the Company concluded that the $120.5 million FDIC loss share receivable is fully collectible as of June 30, 2014. See below for discussion of the impairment charges recognized in 2014 and 2013.

Impairment of FDIC loss share receivables

Based on improving economic trends, their impact on the amount and timing of expected future cash flows, and delays in the foreclosure process, during the loss share receivable collectability assessment completed for the three-months ended June 30, 2014 and March 31, 2013, the Company concluded that certain expected losses were probable of not being collected from either the FDIC or the customer because such projected losses were no longer expected to occur or were expected to occur beyond the reimbursable loss periods specified within the loss share agreements.

On April 10, 2013, management concluded and the Audit Committee and the Board of Directors agreed that an impairment charge was required under generally accepted accounting principles applicable to the Company and should be recognized in the Company’s consolidated financial statements during the three-month period ended March 31, 2013. Therefore, the Company recognized a valuation allowance against the indemnification assets in the amount of $31.8 million through a charge to net income.

Management deemed an impairment charge necessary for the three-month period ended June 30, 2014 for $0.8 million.

NOTE 9 – TRANSFERS AND SERVICING OF FINANCIAL ASSETS (INCLUDING MORTGAGE BANKING ACTIVITY)

Mortgage Banking Activity

IBERIABANK through its subsidiary, IMC, originates mortgage loans for sale into the secondary market. The loans originated primarily consist of residential first mortgages that conform to standards established by the government-sponsored enterprises (“GSEs”), but can also consist of junior lien loans secured by residential property. These sales are primarily to private companies that are unaffiliated with the GSEs on a servicing released basis. The following table details the mortgage banking activity as of and for the six months ended June 30:

(Dollars in thousands)	2014			2013
Balance at beginning of period	$	128,442		$	267,475
Originations and purchases		760,658			1,207,676
Sales, net of gains		(705,732	)		(1,313,120	)
Other		(4,988	)		—
Balance at end of period	$	178,380		$	162,031

35

(Dollars in thousands)	2014		2013
Fair value changes of derivatives and mortgage loans held for sale, net	$	3,383	$	(1,431	)
Gains on sales		24,397		37,790
Servicing and other income, net		309		280
Total mortgage income	$	28,089	$	36,639

Mortgage Servicing Rights

Mortgage servicing rights are 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:

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Mortgage servicing rights	$	2,484	$	(887	)	$	1,597	$	2,146	$	(638	)	$	1,508

NOTE 10 – GOODWILL AND OTHER ACQUIRED INTANGIBLE ASSETS

Goodwill

Changes to the carrying amount of goodwill by reportable segment for the six months ended June 30, 2014 and the year ended December 31, 2013 are provided in the following table.

(Dollars in thousands)	IBERIABANK		IMC		LTC		Total
Balance, December 31, 2012	$	373,905	$	23,178	$	4,789	$	401,872
Goodwill acquired during the year		—		—		—		—
Balance, December 31, 2013		373,905	$	23,178	$	4,789		401,872
Goodwill acquired during the period		121,906		—		376		122,282
Balance, June 30, 2014	$	495,811	$	23,178	$	5,165	$	524,154

The goodwill acquired during the six months ended June 30, 2014 was a result of the Trust One-Memphis, Teche, First Private, and The Title Company LLC acquisitions. See Note 4 for further information. Allocation of the goodwill acquired during the six months ended June 30, 2014 to reportable segments is preliminary and subject to change.

The Company performed the required annual goodwill impairment test as of October 1, 2013. The Company’s annual impairment test did not indicate impairment in any of the Company’s reporting units as of the testing date. Subsequent to the testing date, management has not become aware of any events or changes in circumstances that would indicate that goodwill might be impaired.

Title Plant

The Company held title plant assets totaling $6.7 million at both June 30, 2014 and December 31, 2013. No events or changes in circumstances occurred during 2014 or 2013 to suggest the carrying value of the title plant was not recoverable.

36

Intangible assets subject to amortization

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

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core deposit intangibles	$	50,564	$	(33,135	)	$	17,429	$	45,406	$	(30,784	)	$	14,622
Customer relationship intangible asset		1,398		(780	)		618		1,348		(631	)		717
Non-compete agreement		163		(25	)		138		—		—			—
Other intangible assets		255		(62	)		193		—		—			—
Total	$	52,380	$	(34,002	)	$	18,378	$	46,754	$	(31,415	)	$	15,339

NOTE 11 – OTHER REAL ESTATE OWNED

Other real estate owned is included in Other assets on the Company’s consolidated balance sheet. Other real estate owned, segregated into non-covered and covered properties, consists of the following for the periods indicated. For further discussion of loss share coverage periods applicable to the covered foreclosed assets, see Note 8 to these consolidated financial statements.

	June 30, 2014						December 31, 2013
(Dollars in thousands)	Non-covered		Covered		Total		Non-covered		Covered		Total
Real estate owned acquired by foreclosure	$	25,135	$	39,571	$	64,706	$	28,072	$	60,474	$	88,546
Real estate acquired for development or resale		18,586		—		18,586		9,206		—		9,206
Other foreclosed property		216		971		1,187		93		1,328		1,421
Total	$	43,937	$	40,542	$	84,479	$	37,371	$	61,802	$	99,173

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NOTE 12 – DERIVATIVE INSTRUMENTS AND OTHER HEDGING ACTIVITIES

Information pertaining to outstanding derivative instruments is as follows:

(Dollars in thousands)	Balance Sheet Location		Asset Derivatives Fair Value				Balance Sheet Location		Liability Derivatives Fair Value
			June 30, 2014		December 31, 2013				June 30, 2014		December 31, 2013
Derivatives not designated as hedging instruments under ASC Topic 815:
Interest rate contracts		Other assets	$	14,653	$	10,621		Other liabilities	$	14,653	$	10,620
Forward sales contracts		Other assets		2,414		1,468		Other liabilities		4,163		287
Written and purchased options		Other assets		23,224		17,987		Other liabilities		18,752		15,828
Total derivatives not designated as hedging instruments under ASC Topic 815				40,291		30,076				37,568		26,735
Total			$	40,291	$	30,076			$	37,568	$	26,735
			Asset Derivatives Notional Amount						Liability Derivatives Notional Amount
(Dollars in thousands)			June 30, 2014		December 31, 2013				June 30, 2014		December 31, 2013
Derivatives not designated as hedging instruments under ASC Topic 815:
Interest rate contracts			$	493,924	$	380,303			$	493,924	$	380,303
Forward sales contracts				3,123		192,876				384,907		45,091
Written and purchased options				375,495		295,425				200,126		199,061
Total derivatives not designated as hedging instruments under ASC Topic 815				872,542		868,604				1,078,957		624,455
Total			$	872,542	$	868,604			$	1,078,957	$	624,455

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 June 30, 2014 and December 31, 2013, the Company was required to post $8.7 million and $5.0 million, respectively, in cash as collateral for its derivative transactions, which are included in interest-bearing deposits in banks on the Company’s 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 June 30, 2014. 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 agreement to the non-defaulting entity upon an event of default of the counterparty, including bankruptcy, insolvency, or similar proceeding, and (2) provide the non-defaulting entity the right to accelerate, terminate, and close-out on a net basis all transactions under the agreement and to liquidate or set-off collateral promptly upon an event of default of the counterparty. As permitted by U.S. 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.

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	June 30, 2014
(Dollars in thousands)	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet
			Derivatives		Collateral (1)			Net
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		14,653		—		—			14,653
Written and purchased options		18,645		—		—			18,645
Total derivative assets subject to master netting arrangements	$	33,298	$	—	$	—		$	33,298
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		14,653		—		(4,060	)		10,593
Total derivative liabilities subject to master netting arrangements	$	14,653	$	—	$	(4,060	)	$	10,593

	December 31, 2013
(Dollars in thousands)	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet
			Derivatives		Collateral (1)			Net
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		10,621		—		—			10,621
Written and purchased options		15,801		—		—			15,801
Total derivative assets subject to master netting arrangements	$	26,422	$	—	$	—		$	26,422
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		10,620		—		(5,419	)		5,201
Total derivative liabilities subject to master netting arrangements	$	10,620	$	—	$	(5,419	)	$	5,201

⁽¹⁾  Consists of cash collateral recorded at cost, which approximates fair value, and investment securities.

During the six months ended June 30, 2014 and 2013, the Company has not reclassified 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 June 30, 2014, the fair value of derivatives that will mature within the next twelve months is $0.3 million. The Company does not expect to reclassify any amount from accumulated other comprehensive income into interest income over the next twelve months for derivatives that will be settled.

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At June 30, 2014 and 2013, and for the three and six months then ended, information pertaining to the effect of the hedging instruments on the consolidated financial statements is as follows:

	Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)				Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)				Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	As of June 30					For the Three Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013			2014		2013
Derivatives in ASC Topic 815 Cash Flow Hedging Relationships
Interest rate contracts	$	—	$	—	Other income (expense)	$	—	$	32	Other income (expense)	$	—	$	—
Total	$	—	$	—		$	—	$	32		$	—	$	—

	Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)				Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)					Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	As of June 30					For the Six Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013				2014		2013
Derivatives in ASC Topic 815 Cash Flow Hedging Relationships
Interest rate contracts	$	—	$	—	Other income (expense)	$	—	$	(392	)	Other income (expense)	$	—	$	—
Total	$	—	$	—		$	—	$	(392	)		$	—	$	—

		Amount of Gain (Loss) Recognized in Income on Derivatives
	Location of Gain (Loss) Recognized in Income on Derivatives	For the Three Months Ended June 30						For the Six Months Ended June 30
(Dollars in thousands)		2014			2013			2014			2013
Derivatives Not Designated as Hedging Instruments under ASC Topic 815
Interest rate contracts	Other income (expense)	$	1,027		$	471			1,565			688
Forward sales contracts	Mortgage Income		(859	)		8,320			(3,864	)		5,408
Written and purchased options	Mortgage Income		(205	)		(4,815	)		1,628			(3,730	)
Total		$	(37	)	$	3,976		$	(671	)	$	2,366

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NOTE 13 – SHAREHOLDERS’ EQUITY AND OTHER COMPREHENSIVE INCOME (LOSS)

Other Comprehensive Income

The following is a summary of the tax effects of each component of other comprehensive income for the periods indicated:

	Three Months Ended June 30, 2014
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding gains arising during the period	$	16,730		$	(5,856	)	$	10,874
Less: reclassification adjustment for gains included in net income		(8	)		3			(5	)
Net unrealized gains		16,722			(5,853	)		10,869
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	$	—		$	—		$	—
Less: reclassification adjustment for losses (gains) included in net income		—			—			—
Fair value of derivative instruments designated as cash flow hedges		—			—			—
Total other comprehensive income	$	16,722		$	(5,853	)	$	10,869

	Three Months Ended June 30, 2013
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding losses arising during the period	$	(42,303	)	$	14,806		$	(27,497	)
Less: reclassification adjustment for losses included in net income		66			(23	)		43
Net unrealized losses		(42,237	)		14,783			(27,454	)
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	$	(1,121	)	$	392		$	(729	)
Less: reclassification adjustment for gains included in net income		(33	)		12			(21	)
Fair value of derivative instruments designated as cash flow hedges		(1,154	)		404			(750	)
Total other comprehensive loss	$	(43,391	)	$	15,187		$	(28,204	)

41

	Six Months Ended June 30, 2014
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized loss on securities:
Unrealized holding gains arising during the period	$	32,618		$	(11,416	)	$	21,202
Less: reclassification adjustment for gains included in net income		(27	)		9			(18	)
Net unrealized gains		32,591			(11,407	)		21,184
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	$	—		$	—		$	—
Less: reclassification adjustment for losses (gains) included in net income		—			—			—
Fair value of derivative instruments designated as cash flow hedges		—			—			—
Total other comprehensive income	$	32,591		$	(11,407	)	$	21,184

	Six Months Ended June 30, 2013
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding losses arising during the period	$	(44,297	)	$	15,504		$	(28,793	)
Less: reclassification adjustment for gains included in net income		(2,261	)		791			(1,470	)
Net unrealized losses		(46,558	)		16,295			(30,263	)
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	$	952		$	(333	)	$	619
Less: reclassification adjustment for losses included in net income		392			(137	)		255
Fair value of derivative instruments designated as cash flow hedges		1,344			(470	)		874
Total other comprehensive loss	$	(45,214	)	$	15,825		$	(29,389	)

NOTE 14 – CAPITAL REQUIREMENTS AND OTHER REGULATORY MATTERS

The Company and IBERIABANK are subject to various regulatory capital requirements administered by the 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 financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and IBERIABANK 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. Prompt corrective action provisions are not applicable to bank holding companies.

Quantitative measures established by regulation to ensure capital adequacy require the Company and IBERIABANK to maintain minimum amounts and ratios of total and Tier 1 capital to risk-weighted assets and of Tier 1 capital to average assets. Management believes, as of June 30, 2014 and December 31, 2013, that the Company and IBERIABANK met all capital adequacy requirements to which they are subject.

As of June 30, 2014, the most recent notification from the Federal Deposit Insurance Corporation categorized IBERIABANK as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based 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 June 30, 2014 and December 31, 2013 are presented in the following table.

42

	June 30, 2014
	Minimum					Well Capitalized					Actual
(Dollars in thousands)	Amount		Ratio			Amount		Ratio			Amount		Ratio
Tier 1 Leverage
Consolidated	$	539,674		4.00	%	$	N/A		N/A	%	$	1,353,676		10.03	%
IBERIABANK		537,718		4.00			672,147		5.00			1,196,630		8.90
Tier 1 risk-based capital
Consolidated	$	481,972		4.00	%	$	N/A		N/A	%	$	1,353,676		11.23	%
IBERIABANK		480,157		4.00			720,236		6.00			1,196,630		9.97
Total risk-based capital
Consolidated	$	963,943		8.00	%	$	N/A		N/A	%	$	1,498,467		12.44	%
IBERIABANK		960,315		8.00			1,200,393		10.00			1,341,421		11.17
	December 31, 2013
	Minimum					Well Capitalized					Actual
	Amount		Ratio			Amount		Ratio			Amount		Ratio
Tier 1 Leverage
Consolidated	$	507,760		4.00	%	$	N/A		N/A	%	$	1,231,886		9.70	%
IBERIABANK		505,723		4.00			632,154		5.00			1,069,783		8.46
Tier 1 risk-based capital
Consolidated	$	426,002		4.00	%	$	N/A		N/A	%	$	1,231,886		11.57	%
IBERIABANK		424,578		4.00			636,868		6.00			1,069,783		10.08
Total risk-based capital
Consolidated	$	852,005		8.00	%	$	N/A		N/A	%	$	1,365,280		12.82	%
IBERIABANK		849,157		8.00			1,061,446		10.00			1,202,738		11.33

NOTE 15 – SHARE-BASED COMPENSATION

The Company has various types of share-based compensation plans. These plans are administered by the Compensation Committee of the Board of Directors, which selects persons eligible to receive awards and determines the number of shares and/or options subject to each award, the terms, conditions and other provisions of the awards. During the six months ended June 30, 2014 and 2013, the Company did not have any equity awards that were settled in cash.

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 stock options granted were issued with vesting periods ranging from one-and-a half to seven years. At June 30, 2014, future option or restricted stock awards of 1,033,625 shares could be made under approved incentive compensation plans.

43

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 three-month and six-month periods ended June 30:

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands, except per share data)	2014		2013		2014		2013
Compensation expense related to stock options	$	518	$	533	$	1,037	$	1,066
Income tax benefit related to stock options		182		187		363		374
Impact on basic earnings per share		0.01		0.01		0.02		0.02
Impact on diluted earnings per share		0.01		0.01		0.02		0.02

The Company reported $0.9 million and $0.4 million of excess tax benefits as financing cash inflows during the six months ended June 30, 2014 and 2013, respectively, related to the exercise and vesting of stock options. Net cash proceeds from the exercise of stock options were $9.2 million and $4.2 million for the six months ended June 30, 2014 and 2013, respectively.

The Company uses the Black-Scholes option pricing model to estimate the fair value of share-based awards. The following weighted-average assumptions were used for option awards outstanding during the six-month periods ended June 30:

	2014			2013
Expected dividends		2.1	%		2.6	%
Expected volatility		35.8	%		34.8	%
Risk-free interest rate		2.3	%		1.7	%
Expected term (in years)		7.5			8.6
Weighted-average grant-date fair value	$	21.23		$	15.37

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.

At June 30, 2014, there was $4.2 million of unrecognized compensation cost related to stock options that is expected to be recognized over a weighted-average period of 5.3 years.

44

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

	Number of shares			Weighted Average Exercise Price		Weighted Average Remaining Contract Life
Outstanding options, December 31, 2012		1,236,075		$	51.48
Granted		75,722			52.36
Exercised		(116,324	)		36.43
Forfeited or expired		(31,270	)		55.39
Outstanding options, June 30, 2013		1,164,203		$	52.94		4.9 Years
Exercisable options, June 30, 2013		774,446			52.73		3.4 Years
Outstanding options, December 31, 2013		1,072,829		$	53.47
Granted		75,956			65.23
Exercised		(196,734	)		47.98
Forfeited or expired		(8,577	)		64.82
Outstanding options, June 30, 2014		943,474		$	55.46		5.3 Years
Exercisable options, June 30, 2014		614,361			55.37		3.8 Years

At June 30, 2014, the aggregate intrinsic value of shares underlying outstanding stock options and underlying exercisable stock options was $13.3 million and $8.9 million, respectively. Total intrinsic value of options exercised was $3.5 million and $1.6 million for the six months ended June 30, 2014 and 2013, respectively.

Restricted stock awards

The Company issues restricted stock under various plans for certain officers and directors. A supplemental stock benefit plan adopted in 1999 and the 2001, 2005, 2008, and 2010 Incentive Plans allow grants of restricted stock. The plans allow for the issuance of restricted stock awards that 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 fair value of the restricted stock shares awarded under these plans is recorded as unearned share-based compensation, a contra-equity account. The unearned compensation related to these awards is amortized to compensation expense over the vesting period (generally three to seven years). The total share-based 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 amortized over the vesting period. As of June 30, 2014 and 2013, unearned share-based compensation associated with these awards totaled $24.8 million and $25.4 million, respectively.

The following table represents the compensation expense that was included in non-interest expense in the accompanying consolidated statements of comprehensive income related to restricted stock grants:

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands)	2014		2013		2014		2013
Compensation expense related to restricted stock	$	2,569	$	2,216	$	4,885	$	4,195

The following table represents unvested restricted stock award activity for the six months ended June 30:

	2014			2013
Balance at beginning of period		523,756			538,202
Granted		141,377			164,151
Forfeited		(9,631	)		(26,866	)
Earned and issued		(140,616	)		(123,328	)
Balance at end of period		514,886			552,159

Phantom stock awards

As part of the 2008 Incentive Compensation Plan and 2009 Phantom Stock Plan, the Company issues phantom stock awards to certain key officers and employees. The award is subject to a vesting period of five to seven years and is 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. Award recipients are also entitled to a “dividend equivalent” on each unvested share equivalent held by the award recipient. A dividend equivalent is a dollar amount equal to the cash dividends that the participant would have been entitled to receive if the participant’s share equivalents were issued in shares of common stock. Dividend equivalents will be deemed to be reinvested as share equivalents that will vest and be paid out on the same date as the underlying share equivalents on which the dividend equivalents were paid. The number of share equivalents acquired with a dividend equivalent is determined by dividing the aggregate of dividend equivalents paid on the unvested share equivalents by the closing price of a share of the Company’s common stock on the dividend payment date.

45

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

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands)	2014		2013		2014		2013
Compensation expense related to phantom stock	$	1,022	$	1,112	$	3,073	$	1,811

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

	Number of share equivalents			Dividend equivalents			Total share equivalents			Value of share equivalents (1)
Balance, December 31, 2012		318,729			16,035			334,764		$	16,444,000
Granted		163,498			5,899			169,397			9,081,000
Forfeited share equivalents		(15,121	)		(641	)		(15,762	)		(845,000	)
Vested share equivalents		(40,185	)		(2,876	)		(43,061	)		(2,156,000	)
Balance, June 30, 2013		426,921			18,417			445,338		$	23,875,000
Balance, December 31, 2013		417,238			22,351			439,589		$	27,628,000
Granted		105,043			4,626			109,669			7,588,000
Forfeited share equivalents		(12,656	)		(1,424	)		(14,080	)		(974,000	)
Vested share equivalents		(60,970	)		(5,724	)		(66,694	)		(4,451,000	)
Balance, June 30, 2014		448,655			19,829			468,484		$	32,414,000

⁽¹⁾  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 $69.19 and $53.61 on June 30, 2014 and 2013, respectively.

NOTE 16 – COMMITMENTS AND CONTINGENCIES

Off-balance sheet commitments

The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby 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 nonperformance by other parties represents the contractual amount of the financial instruments. At June 30, 2014, and December 31, 2013, the fair value of guarantees under commercial and standby letters of credit was $1.2 million and $1.1 million, respectively. This amount represents the unamortized fee associated with these guarantees and is included in the consolidated balance sheets of the Company. This fair value will decrease as the existing commercial and standby letters of credit approach their expiration dates.

At June 30, 2014 and December 31, 2013, the Company had the following financial instruments outstanding, whose contract amounts represent credit risk:

(Dollars in thousands)	June 30 2014		December 31 2013
Commitments to grant loans	$	334,186	$	221,627
Unfunded commitments under lines of credit		3,534,055		3,326,448
Commercial and standby letters of credit		124,870		105,026
Reserve for unfunded lending commitments		11,260		11,147

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. 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 counterparty.

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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 7 for additional discussion related to the Company’s 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 or credit is essentially the same as that involved in extending loan facilities to customers and as such, are collateralized when necessary, 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, all of 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, and certain of these claims will be covered by loss sharing agreements with the FDIC. The Company has asserted defenses to these litigations 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.

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, advice of counsel and available insurance coverage, the Company’s management believes that it has established appropriate legal reserves. Any 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, in the event of unexpected future developments, 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 it is reasonably possible to incur above amounts already accrued is immaterial.

NOTE 17 – FAIR VALUE MEASUREMENTS

Fair value option

The Company may elect the fair value option, which permits the Company to choose to measure eligible financial assets and liabilities at fair value at specified election dates and recognize prospective changes in unrealized gains and losses on items for which the fair value option has been elected in earnings at each reporting date.

Beginning in 2013, the Company has elected the fair value option for certain 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 following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for mortgage loans held for sale measured at fair value:

	June 30, 2014						December 31, 2013
(Dollars 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	$	178,380	$	170,527	$	7,853	$	97,273	$	96,875	$	398

Interest income on mortgage loans held for sale is recognized based on contractual rates and is reflected in interest income on loans held for sale in the consolidated statements of comprehensive income. Net gains resulting from the change in fair value of these loans that were recorded in mortgage income in the consolidated statement of comprehensive income for the three-month and six-month periods ended June 30, 2014 totaled $3.6 million and $5.6 million, respectively. There were no net gains or losses recorded in mortgage income for the corresponding periods ended June 30, 2013 resulting from the change in fair value of loans accounted for under the fair value option. The changes in fair value are mostly offset by economic hedging activities, with an immaterial portion of these changes attributable to changes in instrument-specific credit risk.

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Items measured at fair value on a recurring basis

The Company has segregated all financial assets and liabilities that are measured at fair value on a recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to estimate the fair value at the measurement date in the tables below.

(Dollars in thousands)	June 30, 2014
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Available for sale securities	$	—	$	2,008,953	$	—	$	2,008,953
Mortgage loans held for sale		—		178,380		—		178,380
Derivative instruments		—		40,291		—		40,291
Total	$	—	$	2,227,624	$	—	$	2,227,624
Liabilities
Derivative instruments		—		37,568		—		37,568
Total	$	—	$	37,568	$	—	$	37,568
	December 31, 2013
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Available for sale securities	$	15,496	$	1,921,301	$	—	$	1,936,797
Mortgage loans held for sale		—		97,273		—		97,273
Derivative instruments		—		30,076		—		30,076
Total	$	15,496	$	2,048,650	$	—	$	2,064,146
Liabilities
Derivative instruments		—		26,735		—		26,735
Total	$	—	$	26,735	$	—	$	26,735

Available for sale securities with a market value of $15.1 million at June 30, 2014 were transferred from the Level 1 to Level 2 fair value category in the table above. The security was issued by Fannie Mae and was included in the Level 1 category at December 31, 2013 based on a recent trade price in the open market.

Gains and losses (realized and unrealized) included in earnings (or changes in net assets) during 2014 related to assets and liabilities measured at fair value on a recurring basis are reported in non-interest income or other comprehensive income as follows:

(Dollars in thousands)	Noninterest income		Other comprehensive income
Total gains (losses) included in earnings (or changes in net assets)	$	3,410	$	—
Change in unrealized gains (losses) relating to assets still held at June 30, 2014		—		21,184

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Items measured at fair value on a non-recurring basis

The Company has segregated all financial assets and liabilities that are measured at fair value on a non-recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date in the tables below.

(Dollars in thousands)	June 30, 2014
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Loans	$	—	$	2,045	$	—	$	2,045
Mortgage loans held for sale		—		200		—		200
OREO		—		10,407		—		10,407
Total	$	—	$	12,452	$	—	$	12,452

(Dollars in thousands)	December 31, 2013
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Loans	$	—	$	3,070	$	—	$	3,070
Mortgage loans held for sale		—		11,876		—		11,876
OREO		—		14,598		—		14,598
Total	$	—	$	29,544	$	—	$	29,544

The tables above exclude the initial measurement of assets and liabilities that were acquired as part of the acquisitions completed in 2011 through 2014. These assets and liabilities were recorded at their fair value upon acquisition in accordance with U.S. GAAP and were not re-measured during the periods presented unless specifically required by U.S. GAAP. Acquisition date fair values represent either Level 2 fair value measurements (investment securities, OREO, property, equipment, and debt) or Level 3 fair value measurements (loans, deposits, and core deposit intangible asset).

In accordance with the provisions of ASC Topic 310-30, the Company records certain loans considered impaired at their estimated fair value. A loan is considered impaired if it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Fair value is measured at the estimated fair value of the collateral for collateral-dependent loans. Impaired non-covered loans with an outstanding balance of $2.2 million and $4.1 million were recorded at their fair value at June 30, 2014 and December 31, 2013, respectively. These loans include a reserve of $0.2 million and $1.0 million included in the Company’s allowance for credit losses at June 30, 2014 and December 31, 2013, respectively.

During the second quarter of 2013, the Company announced plans to close ten branches as part of its business strategy. In addition, during the second quarter of 2014, the Company closed 9 branches as part of its acquisition of Teche. The Company notified customers of these branches and received the required regulatory approvals to proceed with closure. The Company reviewed the carrying amount of the owned properties and concluded carrying amounts exceeded the fair value of certain branches at that date. Fair value of the branches was based on a third-party broker opinion of value using both a comparable sales and cash flow approach. The Company did not modify the third-party pricing information for unobservable inputs. As a result, the Company recorded impairment losses in other non-interest expense in its consolidated statements of comprehensive income for the year ended December 31, 2013 and the six months ended June 30, 2014. After the impairment losses, the carrying value of the branches was $3.9 million and $5.1 million at June 30, 2014 and December 31, 2013, respectively, and is included in OREO (as real estate acquired for development or resale) on the Company’s consolidated balance sheet.

The Company did not record any liabilities at fair value for which measurement of the fair value was made on a nonrecurring basis at June 30, 2014 and December 31, 2013.

NOTE 18 – 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 excludes certain financial instruments and all non-financial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value. Refer to Note 1 to these financial statements for the methods and assumptions used to measure the fair value of investment securities and derivative instruments.

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Cash and cash equivalents

The carrying amounts of cash and cash equivalents approximate their fair value.

Loans

The fair values of non-covered mortgage loans receivable are estimated based on present values using entry-value rates (the interest rate that would be charged for a similar loan to a borrower with similar risk at the indicated balance sheet date) at June 30, 2014 and December 31, 2013, weighted for varying maturity dates. Other non-covered loans receivable are valued based on present values using entry-value interest rates at June 30, 2014 and December 31, 2013 applicable to each category of loans, which would be classified within Level 3 of the hierarchy. Fair values of mortgage loans held for sale are based on commitments on hand from investors or prevailing market prices, a Level 2 measurement. Covered loans are measured using projections of expected cash flows, exclusive of the shared-loss agreements with the FDIC. Fair value of the covered loans included in the table below reflects the current fair value of these loans, which is based on an updated estimate of the projected cash flow as of the dates indicated. The fair value associated with the loans include estimates related to expected prepayments and the amount and timing of undiscounted expected principal, interest and other cash flows, which also would be classified within Level 3 of the hierarchy.

Accrued Interest Receivable and Accrued Interest Payable

The carrying amount of accrued interest approximates fair value because of the short maturity of these financial instruments.

FDIC Loss Share Receivable

The fair value is determined using projected cash flows from loss sharing agreements based on expected reimbursements for losses at the applicable loss sharing percentages based on the terms of the loss share agreements. Cash flows are discounted to reflect the timing and receipt of the loss sharing reimbursements from the FDIC. The fair value of the Company’s FDIC loss share receivable would be categorized within Level 3 of the hierarchy.

Deposits

The fair values of NOW accounts, money market deposits and savings accounts are the amounts payable on demand at the reporting date. Certificates of deposit were valued using a discounted cash flow model based on the weighted-average rate at June 30, 2014 and December 31, 2013 for deposits with similar remaining maturities. The fair value of the Company’s deposits would therefore be categorized within Level 3 of the fair value hierarchy.

Short-term borrowings

The carrying amounts of short-term borrowings maturing within ninety days approximate their fair values.

Long-term debt

The fair values of long-term debt are estimated using discounted cash flow analyses based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements. The fair value of the Company’s long-term debt would therefore be categorized within Level 3 of the fair value hierarchy.

Off-balance sheet items

The Company has outstanding commitments to extend credit and standby letters of credit. These off-balance sheet financial instruments are generally exercisable at the market rate prevailing at the date the underlying transaction will be completed. At June 30, 2014 and December 31, 2013, the fair value of guarantees under commercial and standby letters of credit was immaterial.

The estimated fair values and carrying amounts of the Company’s financial instruments are as follows:

	June 30, 2014				December 31, 2013
(Dollars in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial Assets
Cash and cash equivalents	$	668,570	$	668,570	$	391,396	$	391,396
Investment securities		2,141,198		2,143,016		2,090,906		2,089,363
Loans and loans held for sale		11,076,907		11,006,250		9,620,461		9,724,432
FDIC loss share receivable		120,532		21,965		162,312		21,918
Derivative instruments		40,291		40,291		30,076		30,076
Accrued interest receivable		36,043		36,043		32,143		32,143
Financial Liabilities
Deposits	$	11,981,183	$	11,749,790	$	10,737,000	$	10,226,573
Short-term borrowings		1,034,741		1,034,741		680,344		680,344
Long-term debt		365,747		336,326		280,699		235,503
Derivative instruments		37,568		37,568		26,735		26,735
Accrued interest payable		7,552		7,552		6,102		6,102

The fair value estimates presented herein are based upon pertinent information available to management as of June 30, 2014 and December 31, 2013. 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 that date and, therefore, current estimates of fair value may differ significantly from the amounts presented herein.

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NOTE 19 – BUSINESS SEGMENTS

Each of the Company’s reportable operating segments is a business unit that 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 are subject to evaluation by the chief operating decision maker in deciding how to allocate resources to segments. The Company reports the results of its operations through three business segments: IBERIABANK, IMC, 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 that are not specifically related to a strategic business unit. The IMC 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 means that reflect utilization.

Also within IBERIABANK are certain reconciling items in order to translate reportable segment results into consolidated results. The following tables present certain information regarding our 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.

IBERIABANK is considered a reportable segment based on the quantitative thresholds specified within ASC Topic 280, Segment Reporting (“ASC 280”). The Company’s wealth management, capital markets and trust operating segments are aggregated within the IBERIABANK reportable operating segment because they do not meet the thresholds specified by ASC 280 and based on the qualitative factors presented within ASC 280. The Company’s IMC and LTC segments do not meet the quantitative thresholds specified by ASC 280, but are reported because management believes information about those segments is useful to users of the financial statements.

	Three Months Ended June 30, 2014
(Dollars in thousands)	IBERIABANK			IMC			LTC		Consolidated
Interest income	$	117,544		$	1,676		$	—	$	119,220
Interest expense		9,764			477			—		10,241
Net interest income		107,780			1,199			—		108,979
(Reversal of) Provision for loan losses		4,764			(16	)		—		4,748
Mortgage income		88			17,869			—		17,957
Title income		—			—			5,262		5,262
Other non-interest income		24,757			(13	)		—		24,744
Core deposit intangible amortization		1,185			—			—		1,185
Allocated expenses		(3,595	)		2,544			1,051		—
Other non-interest expenses		110,355			11,635			4,200		126,190
Income before income taxes		19,916			4,892			11		24,819
Income tax expense		4,339			1,923			9		6,271
Net income	$	15,577		$	2,969		$	2	$	18,548
Total loans and loans held for sale	$	10,875,895		$	201,012		$	—	$	11,076,907
Total assets		15,067,545			232,403			25,094		15,325,042
Total deposits		11,976,403			4,780			—		11,981,183
Average assets		13,832,987			183,838			24,737		14,041,562

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	Three Months Ended June 30, 2013
(Dollars in thousands)	IBERIABANK			IMC		LTC		Consolidated
Interest income	$	106,668		$	1,495	$	14	$	108,177
Interest expense		11,106			589		—		11,695
Net interest income		95,562			906		14		96,482
Provision for loan losses		1,807			—		—		1,807
Mortgage income		(2	)		17,710		—		17,708
Title income		—			—		5,696		5,696
Other non-interest income		19,084			1		—		19,085
Core deposit intangible amortization		1,125			—		—		1,125
Allocated expenses		(882	)		649		233		—
Other non-interest expenses		97,435			14,469		4,332		116,236
Income before income taxes		15,159			3,499		1,145		19,803
Income tax expense		2,389			1,374		450		4,213
Net income	$	12,770		$	2,125	$	695	$	15,590
Total loans and loans held for sale	$	8,889,618		$	175,449	$	—	$	9,065,068
Total assets		12,592,635			205,069		25,799		12,823,503
Total deposits		10,638,853			2,865		—		10,641,718
Average assets		12,650,402			205,677		25,472		12,881,551

	Six Months Ended June 30, 2014
(Dollars in thousands)	IBERIABANK			IMC			LTC			Consolidated
Interest income	$	230,692		$	2,758		$	1		$	233,451
Interest expense		19,367			698			—			20,065
Net interest income		211,325			2,060			1			213,386
(Reversal of) Provision for loan losses		6,860			(9	)		—			6,851
Mortgage income		85			28,004			—			28,089
Title income		—			—			9,429			9,429
Other non-interest income		46,150			(24	)		—			46,126
Core deposit intangible amortization		2,350			—			—			2,350
Allocated expenses		(6,725	)		4,735			1,990			—
Other non-interest expenses		202,429			21,934			8,089			232,452
Income (loss) before income taxes		52,646			3,380			(649	)		55,377
Income tax expense (benefit)		13,343			1,335			(244	)		14,434
Net income (loss)	$	39,303		$	2,045		$	(405	)	$	40,943
Total loans and loans held for sale	$	10,875,895		$	201,012		$	—		$	11,076,907
Total assets		15,067,545			232,403			25,094			15,325,042
Total deposits		11,976,403			4,780			—			11,981,183
Average assets		13,517,696			161,571			24,854			13,704,121

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	Six Months Ended June 30, 2013
(Dollars in thousands)	IBERIABANK			IMC			LTC		Consolidated
Interest income	$	211,595		$	2,969		$	29	$	214,593
Interest expense		24,055			1,184			—		25,239
Net interest income		187,540			1,785			29		189,354
(Reversal of) Provision for loan losses		(1,548	)		(21	)		—		(1,569	)
Mortgage income		(3	)		36,642			—		36,639
Title income		—			—			10,717		10,717
Other non-interest income		39,628			(4	)		—		39,624
Core deposit intangible amortization		2,250			—			—		2,250
Allocated expenses		(1,745	)		1,280			465		—
Other non-interest expenses		224,476			26,926			8,607		260,009
Income before income taxes		3,732			10,238			1,674		15,644
Income tax expense (benefit)		(5,343	)		4,019			661		(663	)
Net income	$	9,075		$	6,219		$	1,013	$	16,307
Total loans and loans held for sale	$	8,889,619		$	175,449		$	—	$	9,065,068
Total assets		12,592,635			205,069			25,799		12,823,503
Total deposits		10,638,853			2,865			—		10,641,718
Average assets		12,740,709			211,923			25,113		12,977,745

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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 June 30, 2014 and updates the Form 10-K for the year ended December 31, 2013. 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 June 30, 2014 compared to December 31, 2013 for the balance sheets and the three months and six months ended June 30, 2014 compared to June 30, 2013 for the statements of comprehensive income. Certain amounts in prior year presentations have been reclassified to conform to the current year presentation, except as otherwise noted.

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, including statements related to the expected timing of the closing of proposed mergers, the expected returns and other benefits of the proposed mergers to shareholders, expected improvement in operating efficiency resulting from the mergers, estimated expense reductions, the impact on and timing of the recovery of the impact on tangible book value, and the effect of the mergers on the Company’s capital ratios. The Company’s actual strategies and results in future periods may differ materially from those currently expected due to various risks and uncertainties.

Actual results could differ materially because of factors such as the level of market volatility, our ability to execute our growth strategy, including the availability of future bank acquisition opportunities, unanticipated losses related to the integration of, and 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 the on-going correction in residential real estate prices and reduced levels of home sales, our ability to satisfy new capital and liquidity standards such as those imposed by the Dodd-Frank Act and those adopted by the Basel Committee and federal banking regulators, sufficiency of our allowance for loan losses, changes in interest rates, access to funding sources, reliance on the services of executive management, competition for loans, deposits and investment dollars, reputational risk and social factors, changes in government regulations and legislation, increases in FDIC insurance assessments, geographic concentration of our markets and economic conditions in these markets, rapid changes in the financial services industry, dependence on our operational, technological, and organizational systems or infrastructure and those of third-party providers of those services, hurricanes and other adverse weather events, the modest trading volume of our common stock, and valuation of intangible assets. Those and other 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, http://www.sec.gov, and the Company’s website, http://www.iberiabank.com, under the heading “Investor Information.” All information in this discussion is as of the date of this Report. The Company undertakes no duty to update any forward-looking statement to conform the statement to actual results or changes in the Company’s expectations.

Included in this discussion and analysis are descriptions of the composition, performance, and credit quality of the Company’s loan portfolio. The Company has three descriptions of loans that are used to categorize the portfolio into its distinct risks and rewards to the consolidated financial statements. “Acquired loans” refer to all loans acquired in a business combination. Because of the loss protection provided by the Federal Deposit Insurance Corporation (the “FDIC”), the risks of the loans and foreclosed real estate acquired in the CapitalSouth Bank (“CSB”), Orion Bank (“Orion”), Century Bank (“Century”), and Sterling Bank (“Sterling”) acquisitions, excluding consumer loans acquired from Sterling, are significantly different from those assets not similarly covered by loss share agreements. Accordingly, the Company reports loans subject to the loss share agreements as “covered loans” and loans that are not subject to the loss share agreements as “non-covered loans.” The subset of acquired loans that is not subject to loss share agreements are referred to as “non-covered acquired loans.” Loans that are neither subject to loss share agreements nor acquired in a business combination are referred to as “legacy loans” or “organic loans.”

EXECUTIVE OVERVIEW

The Company offers commercial and retail banking products and services to customers in locations in six states through its subsidiary, IBERIABANK. The Company also operates mortgage production offices in 12 states through IBERIABANK’s subsidiary, IBERIABANK Mortgage Company (“IMC”), and offers a full line of title insurance and closing services throughout Arkansas and Louisiana through Lenders Title Company (“LTC”) and its subsidiaries. IBERIA Capital Partners L.L.C. (“ICP”) provides equity research, institutional sales and trading, and corporate finance services. 1887 Leasing, LLC and IB Aircraft Holdings, LLC own aircraft used by management of the Company and its subsidiaries. IBERIA Asset Management, Inc. (“IAM”) provides wealth management and trust services for commercial and private banking clients. IBERIA CDE, L.L.C. (“CDE”) is engaged in the purchase of tax credits.

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The Company’s focus is that of a high performing institution. Management believes that improvement in core earnings drives shareholder value, and the Company has adopted a mission statement that is designed to provide guidance for our management, associates and Board of Directors regarding the sense of purpose and direction of the Company. In 2013, the Company reviewed its long-term financial and strategic goals in light of changes affecting the banking industry, including evolving economic conditions, a change in regulatory environment, and interest rate fluctuations. The Company strives to improve long-term shareholder returns by setting challenging financial goals and executing to achieve these goals in consideration of the current and anticipated operating and regulatory environment. We are shareholder- and client-focused, expect high performance from our associates, believe in a strong sense of community and strive to make the Company a great place to work.

During 2014, the Company continued to execute its business model successfully, as evidenced by solid organic loan growth thus far, despite the challenges of the current operating environment, which include regulatory developments, increased competition, enhanced regulatory scrutiny and continued interest rate pressure. The Company also continued to develop its non-interest revenue streams, particularly from its wealth management and mortgage production subsidiaries. In 2013, the Company also focused on improving its short- and long-term profitability through a number of cost saving initiatives implemented throughout the year and into 2014. As a result of its efforts, the Company believes it remains well positioned for future growth opportunities, as evidenced by the strength in its liquidity, core funding, and capitalization levels.

Thus far in 2014, the Company continued to experience growth in many income statement and balance sheet metrics, including net interest income, net income, loans, deposits, and shareholders’ equity. For the first two quarters of 2014, net interest income grew $24.0 million, or 12.7%, while non-interest income decreased $3.3 million, or 3.8%, from the same six-month period of 2013. Non-covered loans grew by $1.5 billion, or 17.6%, during the first six months of 2014 to $10.3 billion at June 30, 2014, partially a result of acquired loans of $1.1 billion, while covered loans decreased by $134.4 million, or 18.7%. The mix of deposits continued a shift to non-interest-bearing, which represented 25.4% of total deposits at June 30, 2014, up from 24.0% at December 31, 2013. In 2014, the Company believes its liquidity, both on balance sheet and off balance sheet, continued to be favorable. The Company had cash of $668.6 million at June 30, 2014, and the Company has funding availability from the Federal Home Loan Bank (the “FHLB”) and correspondent bank lines to continue to meet cash flow needs. Additionally, its capital ratios were in excess of “well capitalized” from a regulatory perspective and its primary risk measures remained favorable. All of these factors allow the Company to maintain its strategic positioning within the challenging banking environment, provide a strong base from which to continue to grow its balance sheet, and remain positioned to provide currently anticipated increases in shareholder value throughout 2014.

Non-interest income decreased $3.3 million, or 3.8%, to $83.6 million for the first six months of 2014, as the Company’s mortgage origination and title businesses both had a slowdown in activity, as mortgage sales volume decreased 45.2% from the six-month period of 2013, which led to an $8.6 million decrease in mortgage income. Title income was $9.4 million, down 12.0% when compared to 2013. However, non-interest income from the Company’s investment in its trust and wealth management businesses continued to increase, as brokerage commissions increased 28.8% over the first six months of 2013.

In the first two quarters of 2014, non-interest expense decreased 10.5% from the same period of 2013. On a basis consistent with generally accepted accounting principles (“GAAP”), non-interest expenses for the six months ended June 30, 2014 were $234.8 million, $27.5 million lower than the first two quarters of 2013. The largest component of the decrease was a $31.0 million decrease in impairment of the Company’s FDIC loss share receivables recorded between the two periods. In addition to the impairment, the Company incurred $2.3 million in debt prepayment penalties that also contributed to the higher non-interest expenses in 2013. Non-interest expense, excluding the impairment and other non-operating items (“non-GAAP”, see table 2 below) totaled $215.9 million thus far in 2014, a decrease of $4.3 million versus the prior year. The decrease in operating non-interest expense was a result of lower employee-related expenses as the Company has improved its overall operating efficiency.

The provision for loan losses increased $8.4 million during the first six months of 2014 when compared to the same 2013 period, due primarily to organic loan growth during the period, but was partially offset by an improvement in asset quality in the legacy portfolio over the past 12 months.

Net income available to common shareholders for the six months ended June 30, 2014 increased $24.6 million to $1.35 per diluted share. Operating earnings (non-GAAP) for the first two quarters of 2014 increased $9.5 million to $51.6 million, or $1.70 on a per share basis.

Acquisition Activity

Over the past 14 years, the Company’s growth has included growth from targeted acquisitions the Company determined would provide additional value to existing shareholders and be a strong strategic fit with the Company.

In the first quarter of 2014, the Company completed the acquisition of the Memphis, Tennessee operations of Trust One Bank, a division of Synovus Bank (“Trust One-Memphis”), which expanded the Company’s presence in the Memphis market. During the second quarter of 2014, the Company also completed the acquisitions of Teche Holding Company (“Teche”) and its subsidiary bank, Teche Federal Bank, based in New Iberia, Louisiana, and First Private Holdings, Inc. (“First Private”), the holding company of Dallas, Texas-based First Private Bank of Texas. The Teche acquisition expanded the Company’s presence in the Acadiana region of Louisiana through the acquisition of 20 branches in the area, while the First Private acquisitions expanded the Company’s presence into the Dallas, Texas market.

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A summary of the major categories of assets acquired and liabilities assumed (all recorded at preliminary fair value at the time of acquisition), as well as the goodwill created, in the three acquisitions is shown in the following table.

TABLE 1 – SUMMARY OF CURRENT PERIOD ACQUISITIONS ⁽¹⁾

(Dollars in thousands)	Trust One -Memphis		Teche		First Private		Total
Assets
Cash	$	92,060	$	71,606	$	26,621	$	190,287
Investment securities		—		25,169		19,110		44,279
Loans		86,889		699,950		298,632		1,085,471
Other real estate owned		1,325		329		—		1,654
Core deposit intangible		2,597		2,055		506		5,158
Goodwill		8,814		84,432		28,660		121,906
Other assets		368		58,626		4,084		63,078
Total assets	$	192,053	$	942,167	$	377,613	$	1,511,833
Liabilities
Non-interest-bearing deposits	$	26,373	$	118,256	$	50,333	$	194,962
Interest-bearing deposits		164,942		521,348		261,933		948,223
Borrowings		—		140,532		6,451		146,983
Other liabilities		738		5,291		256		6,285
Total liabilities	$	192,053	$	785,427	$	318,973	$	1,296,453

⁽¹⁾  Assets and liabilities in this table were recorded at fair value at the time of acquisition. Fair values are preliminary and subject to change. See Note 4 of the unaudited consolidated financial statements for additional information.

The Company believes these acquisitions, as well as a continued focus on high quality organic growth, improvements in efficiency, and development of fee-based businesses, will allow the Company to achieve its long-term objectives throughout 2014 and continue to improve long-term shareholder value.

FINANCIAL OVERVIEW

The Company’s net income available to common shareholders for the second quarter of 2014 totaled $18.5 million, or $0.60 per diluted share, compared to $15.6 million, or $0.53 per diluted share, for the same three-month period of 2013. On an operating basis (non-GAAP), per share earnings were $0.96 per share, up $0.27 from the $0.69 in operating earnings per share in 2013. On a year-to-date basis, net income of $40.9 million, or $1.35 per diluted share, was $24.6 million higher than the six-month period ended June 30, 2013. Primary drivers of the increase in earnings over the prior year include earning asset growth (both organic and through acquisitions) and a decrease in non-interest expenses. Key components of the Company’s performance during the second quarter and first six months of 2014 are summarized below.

• Net interest income increased $12.5 million, or 13.0%, in the second quarter of 2014 when compared to 2013, and $24.0 million, or 12.7%, on a year-to-date basis. The quarter-to-date increase was attributable to an $11.0 million increase in interest income and a $1.5 million, or 12.4%, decrease in interest expense. Compared to the second quarter of 2013, the Company’s net interest margin on a tax-equivalent basis increased to 3.38% from 3.29% due to changes in the volume and mix of the Company’s assets and liabilities as well as deposit rate decreases driven by repricing opportunities over the past 12 months. Similarly, year-to-date interest income increased $18.9 million, or 8.8%, while interest expense decreased $5.2 million, or 20.5%. Interest income was positively affected by a $686.3 million increase in year-to-date average earning assets since June 30, 2013. The net loan yield, however, decreased 11 basis points and was negatively impacted by a 79 basis point decrease in the net covered loan yield driven by additional amortization on the loss share receivables.

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• Non-interest income totaled $48.0 million in the second quarter of 2014, an increase of $5.5 million, or 12.9%, when compared to the second quarter of 2013. For the first six months of 2014, non-interest income decreased 3.8%, or $3.3 million. However, the Company had a $2.1 million increase in broker commissions, as well as an increase of $1.3 million in service charges that partially offset the mortgage income decrease between the two periods. Also positively affecting non-interest income during the first six months of 2014 was a $1.5 million increase in income from bank-owned life insurance, the result of additional income received from the payment of two life insurance policies in the current period.

• Non-interest expense for the first six months of 2014 decreased $27.5 million from the same period of 2013 and was attributable primarily to the $31.8 million impairment charge recorded during the first quarter of 2013. For the second quarter of 2014, non-interest expenses were $10.0 million higher than the second quarter of 2013, primarily a result of $10.4 million in merger-related expenses. Excluding certain non-operating expenses, non-interest expenses during the three- and six-month periods of 2014 decreased primarily as a result of lower salary and employee benefit costs, net occupancy and equipment, and marketing expenses.

• The Company recorded a provision for loan losses of $6.9 million thus far in 2014 (including $4.7 million in the second quarter of 2014), $8.4 million above the provision recorded in the first two quarters of 2013. The provision in 2014 was impacted by loan growth during the period, but was tempered by an overall improvement in the Company’s asset quality, especially in its non-covered, non-acquired loan portfolio. The improvement in asset quality from December 31, 2013 has partially offset the need for a higher allowance for loan losses as a result of loan growth thus far in 2014. As of June 30, 2014, the allowance for loan losses as a percent of total loans was 1.23%, compared to 1.51% at December 31, 2013, and was 63.7% of non-performing loans at June 30, 2014, compared to 52.5% at the end of 2013.

• The Company paid a quarterly cash dividend of $0.34 per common share in the second quarter of 2014 and $0.68 for the year-to-date period. These amounts were consistent with the quarterly dividends paid for the same periods in 2013.

• Total assets at June 30, 2014 were $15.3 billion, up $2.0 billion, or 14.7%, from December 31, 2013. Acquired assets of $1.5 billion and legacy loan growth of $546.4 million, or 6.6%, across many of the Company’s markets drove the increase in total assets. A $134.4 million decreases in covered loans since the end of 2013 partially offset these increases. The Company’s FDIC loss share receivables also decreased $41.8 million, or 25.7%, since December 31, 2013, due primarily to amortization and cash receipts from the FDIC.

• Total loans at June 30, 2014 were $10.9 billion, an increase of $1.4 billion, or 14.8%, from $9.5 billion at December 31, 2013. As noted above, loan growth during the first six months of 2014 was driven by a 17.6% increase in non-covered loans. Of the $1.5 billion in non-covered loan growth, the Company acquired $1.1 billion in loans from Teche, First Private, and Trust One-Memphis, and had organic growth of $546.4 million. Covered loans decreased 18.7% from December 31, 2013, as covered loans were paid down or charged-off and submitted for reimbursement.

• Total customer deposits increased $1.2 billion, or 11.6%, to $12.0 billion at June 30, 2014. The Company acquired $1.1 billion in total deposits from Teche, First Private, and Trust One-Memphis, and had deposit growth of $94.7 million excluding these acquired deposits thus far in 2014. Non-interest-bearing deposits increased $471.4 million, or 18.3%, while interest-bearing deposits increased $772.7 million, or 9.5%. Excluding acquired deposits, the Company’s non-interest-bearing deposits increased $270.2 million while interest-bearing deposits decreased $175.5 million. This decrease was primarily the result of decrease in interest-bearing checking deposits from December 31, 2013. Although deposit competition remained intense, the Company was able to generate growth across many of its deposit products. Organic deposit growth was driven by growth in the Company’s Little Rock, Arkansas, Southwest Louisiana, and Acadiana (Louisiana) markets.

• Shareholders’ equity increased $268.3 million, or 17.5%, from year-end 2013. The increase was primarily driven by 3.3 million common shares issued in the Teche and First Private acquisitions, which resulted in additional equity of $214.7 million, as well as undistributed net income of $19.4 million and a $21.2 million increase in other comprehensive income, a result of the change in the unrealized gain in the Company’s available for sale investment portfolio at the end of the second quarter of 2014.

The discussion and analysis below 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. 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, distort period-to-period comparisons. Since the presentation of these GAAP performance measures and their impact differ between companies, 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 included in the table below.

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TABLE 2 - RECONCILIATIONS OF NON-GAAP FINANCIAL MEASURES

	Three Months Ended June 30
	2014								2013
(Dollars in thousands, except per share amounts)	Pre-tax			After-tax			Per share (1)		Pre-tax			After-tax			Per share (1)
Net income (loss) (GAAP)	$	24,819		$	18,548		$	0.60	$	19,803		$	15,590		$	0.53
Non-interest expense adjustments
Merger-related expenses		10,419			6,840			0.22		—			—			—
Severance expenses		5,466			3,553			0.11		1,670			1,086			0.04
Storm-related expenses		4			3			—		—			—			—
Gain (Loss) on sale of long-lived assets, net of impairment		1,241			807			0.03		4,618			3,002			0.10
Provision for FDIC clawback liability		—			—			—		130			84			—
Occupancy expenses and branch closure expenses		14			9			—		306			199			0.01
Termination of debit card rewards program		—			—			—		450			293			0.01
Professional expenses and litigation settlement		—			—			—		150			97			—
Non-interest income adjustments
Loss (Gain) on sale of investments		(8	)		(5	)		—		57			37			—
Other non-interest income		(1	)		(1	)		—		—			—			—
Operating earnings (non-GAAP)		41,954			29,754			0.96		27,184			20,388			0.69
Covered and acquired (reversal of) provision for loan losses		1,744			1,134			0.04		(1,609	)		(1,046	)		(0.03	)
Other provision for loan losses		3,004			1,953			0.06		3,416			2,221			0.07
Pre-provision operating earnings (non-GAAP)	$	46,702		$	32,841		$	1.06	$	28,991		$	21,563		$	0.73

⁽¹⁾ Per share amounts may not appear to foot due to rounding.

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	Six Months Ended June 30
	2014									2013
(Dollars in thousands, except per share amounts)	Pre-tax			After-tax			Per share (1)			Pre-tax			After-tax			Per share (1)
Net income (loss) (GAAP)	$	55,377		$	40,943		$	1.35		$	15,644		$	16,307		$	0.55
Non-interest expense adjustments
Merger-related expenses		11,386			7,469			0.25			157			102			—
Severance expenses		5,586			3,631			0.12			1,767			1,149			0.04
Storm-related expenses		188			122			—			—			—			—
Gain (Loss) on sale of long-lived assets, net of impairment		1,782			1,158			0.04			31,813			20,678			0.70
Provision for FDIC clawback liability		—			—			—			130			84			—
Debt prepayment		—			—			—			2,307			1,500			0.05
Occupancy expenses and branch closure expenses		31			20			—			5,299			3,445			0.12
Termination of debit card rewards program		(22	)		(15	)		—			450			293			0.01
Professional expenses and litigation settlement		—			—			—			150			97			—
Non-interest income adjustments
Loss (Gain) on sale of investments		(27	)		(18	)		—			(2,302	)		(1,496	)		(0.05	)
Other noninterest income		(1,773	)		(1,680	)		(0.05	)		—			—			—
Operating earnings (non-GAAP)		72,528			51,630			1.70			55,415			42,159			1.42
Covered and acquired (reversal of) provision for loan losses		1,852			1,204			0.04			(984	)		(640	)		(0.02	)
Other (reversal of) provision for loan losses		4,999			3,249			0.11			(585	)		(380	)		(0.01	)
Pre-provision operating earnings (non-GAAP)	$	79,379		$	56,083		$	1.85		$	53,846		$	41,139		$	1.39

⁽¹⁾  Per share amounts may not appear to foot due to rounding.

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	As of and For the Three Months Ended June 30
(Dollars in thousands)	2014			2013
Net interest income (GAAP)	$	108,979		$	96,482
Add: Effect of tax benefit on interest income		2,191			2,396
Net interest income (TE) (Non-GAAP)	$	111,170		$	98,878
Non-interest income (GAAP)	$	47,963		$	42,489
Add: Effect of tax benefit on non-interest income		503			485
Non-interest income (TE) (Non-GAAP)	$	48,466		$	42,974
Non-interest expense (GAAP)	$	127,375		$	117,361
Less: Intangible amortization expense		(1,244	)		(1,181	)
Tangible non-interest expense (Non-GAAP)	$	126,131		$	116,180
Net income (GAAP)	$	18,548		$	15,590
Add: Effect of intangible amortization, net of tax		808			768
Cash earnings (Non-GAAP)	$	19,356		$	16,358
Total assets (GAAP)	$	15,325,042		$	12,823,503
Less: Intangible assets		550,874			427,581
Total tangible assets (Non-GAAP)	$	14,774,168		$	12,395,922
Average assets (Non-GAAP)	$	14,041,562		$	12,881,551
Less: Average intangible assets		459,534			428,034
Total average tangible assets (Non-GAAP)	$	13,582,028		$	12,453,517
Total shareholders’ equity (GAAP)	$	1,799,306		$	1,504,761
Less: intangible assets		550,874			427,581
Total tangible shareholders’ equity (Non-GAAP)	$	1,248,432		$	1,077,180
Average shareholders’ equity (Non-GAAP)	$	1,632,049		$	1,528,606
Less: Average intangible assets		459,534			428,034
Average tangible shareholders’ equity (Non-GAAP)	$	1,172,515		$	1,100,572
Net income per common share - diluted	$	0.60		$	0.53
Add: Effect of intangible amortization, net of tax		0.03			0.02
Cash earnings per share - diluted (Non-GAAP)	$	0.63		$	0.55
Return on average common equity		4.56	%		4.09	%
Add: Effect of intangibles		2.06			1.87
Return on average tangible common equity (Non-GAAP)		6.62	%		5.96	%
Efficiency ratio		81.2	%		84.5	%
Less: Effect of tax benefit related to tax-exempt income		(1.4	)		(1.8	)
Efficiency ratio (TE) (Non-GAAP)		79.8			82.7
Less: Effect of amortization of intangibles		(0.8	)		(0.8	)
Tangible efficiency ratio (TE) (Non-GAAP)		79.0	%		81.9	%

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FINANCIAL CONDITION

EARNING ASSETS

Interest income associated with earning assets is the Company’s primary source of income. Earning assets are composed of interest-earning or dividend-earning assets, including loans, securities, short-term investments and loans held for sale. Earning assets averaged $12.7 billion during the second quarter of 2014, a $1.1 billion, or 9.6%, increase when compared to the second quarter of 2013. On a year-to-date basis, average earnings assets increased 5.9%, or $686.3 million. The increase from the prior year was primarily the result of the Company’s three acquisitions in 2014 and organic loan and investment security growth during the past twelve months. The following discussion highlights the Company’s major categories of earning assets.

Loans and Leases

The Company’s total loan portfolio increased $1.4 billion, or 14.8%, to $10.9 billion at June 30, 2014, compared to $9.5 billion at December 31, 2013. The increase was driven by non-covered loan growth of $1.5 billion, or 17.6%, during the first six months of 2014, but was offset by a $134.4 million, or 18.7%, decrease in covered loans. By loan type, the increase was primarily from commercial loan growth of $511.1 million and consumer loan growth of $357.3 million thus far in 2014, 7.4% and 17.5% higher, respectively, than at the end of 2013.

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The major categories of loans outstanding at June 30, 2014 and December 31, 2013 are presented in the following tables, segregated into covered loans and non-covered loans, including non-covered loans acquired from OMNI, Cameron, Florida Gulf, Trust One-Memphis, Teche, and First Private. The carrying amount of the covered loans and loans acquired from these acquisitions consisted of loans accounted for in accordance with ASC Topic 310-30 (i.e., loans impaired at the time of acquisition) and loans subject to ASC Topic 310-30 by analogy only or subject to ASC Topic 310-10 (i.e., loans performing at the time of acquisition) as detailed in the following table.

TABLE 3 – SUMMARY OF LOANS

	June 30, 2014
	Commercial				Mortgage				Consumer and Other
(Dollars in thousands)	Real Estate		Business		1 - 4 Family		Construction		Indirect automobile		Home Equity		Credit Card		Other		Total
Covered loans
Impaired (1)	$	6,523	$	—	$	28,273	$	—	$	—	$	13,879	$	—	$	596	$	49,271
Performing (1)		287,592		35,902		113,340		—		—		96,189		632		2,512		536,167
Total covered loans		294,115		35,902		141,613		—		—		110,068		632		3,108		585,438
Non-covered loans
Acquired
Impaired (1)		30,799		5,496		1,209		—		—		3,795		—		8		41,307
Performing (1)		492,659		128,130		522,150		—		874		179,892		—		113,344		1,437,049
		523,458		133,626		523,359		—		874		183,687		—		113,352		1,478,356
Legacy loans		3,425,986		2,961,461		403,613		56,039		391,481		1,173,386		65,260		357,507		8,834,733
Total non-covered loans		3,949,444		3,095,087		926,972		56,039		392,355		1,357,073		65,260		470,859		10,313,089
Total loans	$	4,243,559	$	3,130,989	$	1,068,585	$	56,039	$	392,355	$	1,467,141	$	65,892	$	473,967	$	10,898,527
	December 31, 2013
	Commercial				Mortgage				Consumer and Other
	Real Estate		Business		1 - 4 Family		Construction		Indirect automobile		Home Equity		Credit Card		Other		Total
Covered loans
Impaired (1)	$	14,904	$	—	$	28,223	$	—	$	—	$	21,768	$	—	$	1,182	$	66,077
Performing (1)		372,428		37,025		125,802		—		—		115,354		679		2,428		653,716
Total covered loans		387,332		37,025		154,025		—		—		137,122		679		3,610		719,793
Non-covered loans
Acquired
Impaired (1)		12,240		30		126		—		25		1,204		—		158		13,783
Performing (1)		332,829		53,007		18,009		—		1,828		52,239		—		12,210		470,122
		345,069		53,037		18,135		—		1,853		53,443		—		12,368		483,905
Legacy loans		3,134,904		2,906,051		404,922		9,450		373,383		1,101,227		63,642		294,742		8,288,321
Total non-covered loans		3,479,973		2,959,088		423,057		9,450		375,236		1,154,670		63,642		307,110		8,772,226
Total loans	$	3,867,305	$	2,996,113	$	577,082	$	9,450	$	375,236	$	1,291,792	$	64,321	$	310,720	$	9,492,019

⁽¹⁾ Loans in these categories were acquired with evidence of credit deterioration since origination. Accordingly, assumed credit losses at the purchase date were included in the balance acquired.

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Legacy loans increased $546.4 million, or 6.6%, during the first six months of 2014, with the Houston, Texas, New Orleans, Louisiana, and Baton Rouge, Louisiana markets experiencing the largest organic growth in their loan portfolios. On a market basis, growth in the non-covered portfolio was driven by the Company’s Houston, Texas market, which grew its loan portfolio $138.7 million, or 9.8%, since the end of 2013. Loans in the New Orleans market grew $48.3 million, or 3.6%, while the Baton Rouge market contributed loan growth of $44.8 million, or 6.3%, since December 31, 2013.

The Company’s loan to deposit ratio at June 30, 2014 and December 31, 2013 was 91.0% and 88.4%, respectively. The percentage of fixed rate loans to total loans increased slightly from 50.3% at the end of 2013 to 51.5% at June 30, 2014.

Commercial Loans

Total commercial loans increased $511.1 million, or 7.4%, from December 31, 2013, with $605.5 million, or 9.4%, in non-covered loan growth and a decrease in covered commercial loans of $94.3 million, or 22.2%. During the first six months of 2014, the Company’s acquired commercial loans increased $259.0 million on a net basis (acquired commercial loans from Teche, First Private and Trust One-Memphis were offset partially by loan payments and charge-offs), while legacy commercial loan growth during the first six months of 2014 totaled $346.5 million. The Company continued to attract and retain commercial customers in 2014 as commercial loans were 67.7% of the total loan portfolio at June 30, 2014. Unfunded commitments on commercial loans were $2.6 billion at June 30, 2014, a decrease of $47.2 million, or 1.8%, when compared to the end of the prior year.

Commercial real estate loans increased $376.3 million, or 9.7%, during the first six months of 2014, driven by an increase in non-covered commercial real estate loans of $469.5 million, or 13.5%. At June 30, 2014, commercial real estate loans totaled $4.2 billion, or 38.9% of the total loan portfolio, compared to 40.7% at December 31, 2013. The Company’s underwriting standards generally provide for loan terms of three to five years, with amortization schedules of generally no more than twenty years. Low loan-to-value ratios are maintained and usually limited to no more than 80% at the time of origination. In addition, the Company obtains personal guarantees of the principals as additional security for most commercial real estate loans.

As of June 30, 2014, commercial business loans totaled $3.1 billion, or 28.7% of the Company’s total loan portfolio. This represents a $134.9 million, or 4.5%, increase from December 31, 2013. The Company originates commercial business loans on a secured and, to a lesser extent, unsecured basis. The Company’s commercial business loans may be term loans or revolving lines of credit. Term loans are generally structured with terms of no more than three to five years, with amortization schedules of generally no more than seven years. Commercial business term loans are generally secured by equipment, machinery or other corporate assets. The Company also provides for revolving lines of credit generally structured as advances upon perfected security interests in accounts receivable and inventory. Revolving lines of credit generally have annual maturities. The Company obtains personal guarantees of the principals as additional security for most commercial business loans.

The following table details the Company’s commercial loans by state as of the dates indicated.

TABLE 4 – COMMERCIAL LOANS BY STATE

(Dollars in thousands)	Louisiana		Florida		Alabama		Texas		Arkansas		Other		Total
June 30, 2014
Covered	$	—	$	282,544	$	47,473	$	—	$	—	$	—	$	330,017
Non-covered		3,248,270		406,888		815,819		1,479,760		677,424		416,370		7,044,531
Total commercial loans	$	3,248,270	$	689,432	$	863,292	$	1,479,760	$	677,424	$	416,370	$	7,374,548
December 31, 2013
Covered	$	—	$	363,372	$	60,985	$	—	$	—	$	—	$	424,357
Non-covered		3,035,998		335,858		795,759		1,310,352		634,071		327,023		6,439,061
Total commercial loans	$	3,035,998	$	699,230	$	856,744	$	1,310,352	$	634,071	$	327,023	$	6,863,418

Mortgage Loans

Residential 1-4 family loans comprise most of the Company’s mortgage loans. The vast majority of the Company’s residential 1-4 family mortgage loan portfolio is secured by properties located in its market areas and originated under terms and documentation that permit their sale in the secondary market. 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. Beginning in the third quarter of 2013, the Company began to invest in loans that would be considered

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subprime (i.e., generally loans with a FICO score of less than 620) in order to ensure compliance with relevant regulations. The Company expects to continue to invest in subprime loans through additional secondary market purchases, as well as direct originations, throughout 2014, albeit up to a limited amount. The Company did not make a significant investment in subprime loans thus far in 2014. At June 30, 2014, the Company had $118.9 million in subprime mortgage loans, an increase of $2.4 million from December 31, 2013.

The Company continues to sell the majority of conforming mortgage loan originations in the secondary market on a servicing-released basis and recognize the associated fee income in earnings 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. Total residential mortgage loans increased $538.1 million, or 91.7% compared to December 31, 2013, the result of the private banking originations and acquired mortgage loans. These increases during the first six months of 2014 were offset by decreases in the Company’s covered mortgage loans of $12.4 million, or 8.1%, as existing loans were paid down and most of the new mortgage loan originations were sold.

Consumer and Credit Card Loans

The Company offers consumer loans in order to provide a full range of retail financial services to its customers. The Company originates substantially all of its consumer loans in its primary market areas. At June 30, 2014, $2.4 billion, or 22.0%, of the Company’s total loan portfolio was comprised of consumer loans, compared to $2.0 billion, or 21.5%, at the end of 2013. Total consumer loans increased $357.3 million, or 17.5%, from December 31, 2013, with $175.3 million, or 49.1%, of the growth from home equity loans and lines of credit. The remaining growth was split between indirect automobile loans ($17.1 million) and other personal consumer loans ($164.8 million), which includes credit card loans. Of the $357.3 million increase from December 31, 2013, $154.7 million, or 43.3%, was a result of legacy consumer loan growth.

Consistent with 2013, home equity loans comprised the largest component of the Company’s consumer loan portfolio at June 30, 2014. The balance of home equity loans increased $175.3 million during the quarter to $1.5 billion at June 30, 2014. Non-covered home equity loans increased $202.4 million in the first six months of 2014, primarily a result of the Company’s acquisitions, as well as its continued focus on expanding its total consumer portfolio through its additional investment in its consumer business. Unfunded commitments related to home equity loans and lines were $620.3 million at June 30, 2014, an increase of $106.0 million from the end of 2013. The Company has approximately $504.2 million of loans with junior liens where the Company does not hold or service the respective loan holding senior lien. The Company believes it has addressed the risks associated with these loans in its allowance for credit losses.

Indirect automobile loans comprised the second largest component of the Company’s consumer loan portfolio. Independent automobile dealerships originate these loans based upon the Company’s credit decisioning. The Company relies on the dealerships, in part, for loan qualifying information. To that extent, there is risk inherent in the Company’s indirect automobile loan portfolio associated with fraud or negligence by the automobile dealership. To limit this risk, an emphasis is placed on established dealerships that have demonstrated reputable behavior, both within the communities the Company serves and through long-term relationships with the Company itself. Indirect automobile loans increased $17.1 million, or 4.6%, from December 31, 2013 to June 30, 2014, and comprised 3.6% of the total loan portfolio.

The Company’s credit card loans totaled $65.9 million at June 30, 2014, an increase of 2.4% from the end of 2013. The increase in credit card loans was the result of additional card usage at the end of the second quarter of 2014. Average credit card balances have increased from $51.5 million in the second quarter of 2013 to $63.4 million for the same period of 2014, a 23.2% increase. Additionally, average balances have increased 2.2% from the fourth quarter of 2013.

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The remainder of the consumer loan portfolio at June 30, 2014 consisted of direct automobile loans and other personal consumer loans, and comprised 4.3% of the overall loan portfolio. At the end of the second quarter of 2014, the Company’s direct automobile loans totaled $125.0 million, a $32.3 million increase over December 31, 2013, and the Company’s other personal consumer loans were $348.9 million, a 60.1% increase from December 31, 2013, primarily a result of acquired installment loans and personal lines of credit. Additional information on the Company’s consumer loan portfolio is presented in the following tables. For the purposes of Table 6, unscoreable consumer loans have been included with loans with FICO scores below 660. FICO scores reflect scores available as of the dates indicated, which are updated periodically but may not reflect a customer’s FICO score as of the period indicated.

TABLE 5 – CONSUMER LOANS BY STATE

(Dollars in thousands)	Louisiana		Florida		Alabama		Texas		Arkansas		Other		Total
June 30, 2014
Covered	$	—	$	106,886	$	6,922	$	—	$	—	$	—	$	113,808
Non-covered		1,065,303		126,965		216,389		110,668		240,646		525,576		2,285,547
Total consumer loans	$	1,065,303	$	233,851	$	223,311	$	110,668	$	240,646	$	525,576	$	2,399,355
December 31, 2013
Covered	$	—	$	132,174	$	9,237	$	—	$	—	$	—	$	141,411
Non-covered		836,814		101,041		197,104		65,574		205,585		494,540		1,900,658
Total consumer loans	$	836,814	$	233,215	$	206,341	$	65,574	$	205,585	$	494,540	$	2,042,069

TABLE 6 – CONSUMER LOANS BY FICO SCORE

(Dollars in thousands)	Below 660		660 - 720		Above 720		Discount			Total
June 30, 2014
Covered	$	45,352	$	33,665	$	62,604	$	(27,813	)	$	113,808
Non-covered		261,832		576,659		1,466,838		(19,782	)		2,285,547
Total consumer loans	$	307,184	$	610,324	$	1,529,442	$	(47,595	)	$	2,399,355
December 31, 2013
Covered	$	68,333	$	35,628	$	76,500	$	(39,050	)	$	141,411
Non-covered		345,143		484,927		1,077,692		(7,104	)		1,900,658
Total consumer loans	$	413,476	$	520,555	$	1,154,192	$	(46,154	)	$	2,042,069

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Mortgage Loans Held for Sale

Loans held for sale increased $49.9 million, or 38.9%, to $178.4 million at June 30, 2014. The increase in the balance from the end of 2013 was a result of an increase in origination activity toward the end of the second quarter. Thus far in 2014, the Company originated and purchased $760.7 million in mortgage loans, offset partially by net sales of $705.7 million and other activity of $5.0 million.

Loans held for sale have primarily been 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. Recourse conditions may include fraud in the origination, breach of representations or warranties, and documentation deficiencies. At June 30, 2014, the Company had $3.3 million in loans that have recourse conditions for which buyers have notified the Company of potential recourse action. The Company has recorded a reserve of $1.8 million for potential repurchases at June 30, 2014. However, an insignificant number of loans have been returned to the Company during the current year.

Asset Quality

Over time, the Company’s loan portfolio has transitioned from that of a thrift bank to that of a commercial bank. The Company’s transition brings about the potential for increased risks in the form of potentially higher levels of charge-offs and non-performing assets, as well as increased rewards in the form of potentially increased levels of shareholder returns. As the risks within the Company’s loan portfolio have evolved, management has responded by tightening underwriting guidelines and procedures, implementing more conservative loan charge-off and non-accrual guidelines, revising loan policies, and developing an internal loan review function. As a result of management’s enhancements to underwriting loan risk/return dynamics, the credit quality of the loan portfolio has remained favorable when compared to peers. Management believes that it has demonstrated proficiency in managing credit risk through timely identification of significant problem loans, prompt corrective action, and transparent disclosure. Overall asset quality improved during the first six months of 2014, primarily as a result of decreases in the number and amount of past due loans and non-performing assets. Consistent with prior years, the assets and liabilities purchased and assumed through the Company’s four failed bank acquisitions continue to have a disproportionate impact on overall asset quality. The Company continues to closely monitor the risk-adjusted level of return within the loan portfolio.

Written underwriting standards established by the Board of Directors and management govern the lending activities of the Company. The commercial credit department, in conjunction with senior lending personnel, underwrites all commercial business and commercial real estate loans. The Company provides centralized underwriting of all residential mortgage, construction and consumer loans. Established loan origination procedures require appropriate documentation, including financial data and credit reports. For loans secured by real property, the Company generally requires property appraisals, title insurance or a title opinion, hazard insurance, and flood insurance, where appropriate.

Loan payment performance is monitored and late charges are assessed on past due accounts. A centralized department administers delinquent loans. Every effort is made to minimize any potential loss, including instituting legal proceedings as necessary. Commercial loans are periodically reviewed through a loan review process to provide an independent assessment of a loan’s risks. All other loans are also subject to loan reviews through a periodic sampling process. The Company exercises significant judgment in determining the risk classification of its commercial loans.

The Company utilizes an asset risk classification system in accordance with guidelines established by the FRB as part of its efforts to monitor commercial asset quality. In connection with their examinations of insured institutions, both federal and state examiners also have the authority to identify problem assets and, if appropriate, reclassify them. There are three classifications for problem assets: “substandard,” “doubtful” and “loss”, all of which are considered adverse classifications. Substandard assets have one or more defined weaknesses and are characterized by the distinct possibility that the Company will sustain some loss if the weaknesses are not corrected. Doubtful assets have the weaknesses of substandard assets with the additional characteristic that the weaknesses make collection or liquidation in full questionable, and there is a high probability of loss based on currently existing facts, conditions and values. An asset classified as loss is considered not collectable and of such little value that continuance as an asset of the Company is not warranted. Commercial loans with adverse classifications are reviewed by the Board Risk Committee of the Board of Directors periodically. Loans are placed on non-accrual status when they are 90 days or more past due unless, in the judgment of management, the probability of timely collection of interest is deemed to be sufficient to warrant further accrual. When a loan is placed on non-accrual status, the accrual of interest income ceases and accrued but unpaid interest attributable to the current year is reversed against interest income. Accrued interest receivable attributable to the prior year is recorded as a charge-off to the allowance for credit losses.

Real estate acquired by the Company through foreclosure or by deed-in-lieu of foreclosure is classified as other real estate owned (“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 estimated costs to sell.

Under GAAP, certain loan modifications or restructurings are designated as troubled debt restructurings (“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.

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Non-performing Assets

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

Loans acquired through failed bank acquisitions, referred to as covered loans, are covered by loss sharing agreements with the FDIC, whereby the FDIC reimburses the Company for the majority of the losses incurred during the loss share claim period. Acquisition date fair values of loans covered by loss sharing agreements were determined without regard to the loss sharing agreements. In addition to covered loans, the Company also accounts for other 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 310-30. Collectively, all loans accounted for under ASC 310-30 are referred to as purchased impaired loans. Application of ASC 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. At acquisition, purchased impaired loans were individually evaluated and assigned to loan pools based on common risk characteristics, which included loan performance at the time of acquisition, loan type based on regulatory reporting guidelines, and/or the nature of collateral. The acquisition date fair values of each pool were estimated based on the expected cash flows of the underlying loans. Certain loan level information, including outstanding principal balance, maturity, term to re-price (if a variable rate loan), and interest rate were used to estimate the expected cash flows for each loan pool. ASC 310-30 does not permit carry over or recognition of an allowance for credit losses at acquisition. Credit quality deterioration, also referred to as credit losses, evident at acquisition for individual loans was reflected in the acquisition date fair value through the reduction of cash flows expected to be received over the life of loans. A provision for credit losses is recognized and an allowance for credit losses is recorded subsequent to acquisition to the extent that re-estimated expected losses exceed losses estimated at acquisition. Purchased impaired loans were considered to be performing as of the acquisition date regardless of their past due status based on their contractual terms. In accordance with regulatory reporting guidelines, purchased impaired loans that are contractually past due are reported as past due and accruing based on the number of days past due.

Due to the significant difference in accounting for covered loans and the related FDIC loss sharing agreements, as well as non-covered acquired loans accounted for as purchased impaired loans, and given the significant amount of acquired impaired loans that are past due but still accruing, 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. In addition, because loan level charge-offs related to purchased impaired loans are not recognized in the financial statements until the cumulative amounts exceed the original loss projections on a pool basis, the net charge-off ratio for acquired loans is not consistent with the net charge-off ratio for other loan portfolios. The inclusion of these loans in certain asset quality ratios could result in a lack of comparability across quarters or years and could impact comparability with other portfolios that were not impacted by purchased impaired loan accounting. The Company believes that the presentation of certain asset quality measures excluding either covered loans or all purchased 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 Table 7 below present asset quality information excluding both covered loans and acquired loans, and related amounts.

Non-performing assets excluding acquired loans decreased $4.0 million, or 5.5%, compared to December 31, 2013, as non-accrual loans decreased $9.5 million and accruing loans 90 days or more past due decreased $1.0 million. Offsetting the decreases was a $6.5 million increase in OREO, the result of the movement of former bank properties to OREO at the end of the second quarter of 2014. Including TDRs that are in compliance with their modified terms, total non-performing assets and TDRs decreased $4.2 million over the past six months.

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The following table sets forth the composition of the Company’s non-covered non-performing assets, including accruing loans past due 90 or more days and TDRs, as of June 30, 2014 and December 31, 2013.

TABLE 7 - NON-PERFORMING ASSETS AND TROUBLED DEBT RESTRUCTURINGS (EXCLUDING ACQUIRED LOANS)

(Dollars in thousands)	June 30, 2014			December 31, 2013			Increase (Decrease)
Non-accrual loans:
Commercial and business banking	$	9,871		$	24,471		$	(14,600	)	(59.7	)%
Mortgage		13,684			10,237			3,447		33.7
Consumer and credit card		10,632			8,979			1,653		18.4
Total non-accrual loans		34,187			43,687			(9,500	)	(21.7	)
Accruing loans 90 days or more past due		20			1,075			(1,055	)	(98.1	)
Total non-performing loans (1)		34,207			44,762			(10,555	)	(23.6	)
OREO and foreclosed property (2)		34,794			28,272			6,522		23.1
Total non-performing assets (1)		69,001			73,034			(4,033	)	(5.5	)
Troubled debt restructuring in compliance with modified terms (3)		1,189			1,376			(187	)	(13.6	)
Total non-performing assets and troubled debt restructurings (1)	$	70,190		$	74,410		$	(4,220	)	(5.7	)%
Non-performing loans to total loans (1) (4)		0.39	%		0.54	%
Non-performing assets to total assets (1) (4)		0.53	%		0.61	%
Non-performing assets and troubled debt restructurings to total assets (1) (4)		0.54	%		0.62	%
Allowance for credit losses to non-performing loans (4) (5)		239.45	%		175.26	%
Allowance for credit losses to total loans (4) (5)		0.93	%		0.95	%

⁽¹⁾  Non-performing loans and assets include accruing loans 90 days or more past due.

⁽²⁾  OREO and foreclosed property at June 30, 2014 and December 31, 2013 include $18.6 million and $9.2 million, respectively, of former bank properties held for development or resale.

⁽³⁾  Troubled debt restructurings in compliance with modified terms for June 30, 2014 and December 31, 2013 do not include $4.2 million and $18.5 million in troubled debt restructurings included in total non-accrual loans above.

⁽⁴⁾  Total loans, total non-performing loans, and total assets exclude loans and assets covered by FDIC loss share agreements and acquired loans discussed below.

⁽⁵⁾  The allowance for credit losses excludes the portion of the allowance related to covered loans and acquired non-covered loans discussed below.

Non-performing loans were 0.39% of total legacy loans at June 30, 2014, 15 basis points lower than at December 31, 2013. If covered loans and acquired loans accounted for in pools that meet non-performing criteria are included, non-performing loans were 1.92% of total loans at June 30, 2014 and 2.87% at December 31, 2013. The allowance for credit losses as a percentage of non-performing loans was 239.5% at June 30, 2014 and 175.3% at December 31, 2013. Including covered loans and pooled loans, the allowance for credit losses as a percentage of total loans was 1.33% at June 30, 2014 and 1.62% at December 31, 2013.

Non-performing assets as a percentage of total assets have remained at relatively low levels. Total non-performing assets were 0.53% of non-covered, non-acquired assets at June 30, 2014, eight basis points below December 31, 2013. Consistent with the overall improvement in asset quality, the Company’s allowance for credit losses as a percentage of loans, excluding reserves for acquired loans, decreased two basis points from 2013 to 0.93% at June 30, 2014.

Loans defined as TDRs not included in non-performing assets decreased to $1.2 million at the end of the second quarter of 2014. Total legacy TDRs totaled $5.4 million at June 30, 2014, $14.5 million, or 72.8%, lower than at December 31, 2013, driven primarily from the payoff of one relationship totaling $10.4 million at December 31, 2013. There were no additions to TDRs during the first six months of 2014.

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The Company had gross charge-offs on non-acquired loans of $5.2 million during the six months ended June 30, 2014. Offsetting these charge-offs were recoveries of $3.4 million. As a result, net charge-offs on non-acquired loans during the first two quarters of 2014 were $1.8 million, or 0.04% of average loans, compared to net charge-offs of $1.0 million, or 0.06%, for the first six months of 2013.

At June 30, 2014, excluding loans covered by the FDIC loss share agreements (see “Covered Loans” below) and acquired loans, the Company had $65.6 million of assets classified as substandard, $2.2 million of assets classified as doubtful, and no assets classified as loss (before the application of loan discounts to acquired loans). Accordingly, the aggregate of the Company’s classified assets was 0.77% of total loans, compared to 0.99% at December 31, 2013. The decrease in classified assets is consistent with the overall improvement in asset quality since December 31, 2013. As with non-classified assets, a reserve for credit losses has been recorded for all substandard and doubtful loans at June 30, 2014 according to the Company’s allowance for credit losses policy.

In addition to the problem loans described above, excluding covered loans and acquired loans, there were $85.9 million of loans classified as “special mention” at June 30, 2014, which in management’s opinion were subject to potential future rating downgrades. Special mention loans are defined as loans where known information about possible credit problems of the borrowers cause management to have some doubt as to the ability of these borrowers to comply with the present loan repayment terms, which may result in future disclosure of these loans as non-performing. Special mention loans increased $40.1 million from December 31, 2013 as a result of the movement of a limited number of loans to special mention during the year.

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Past Due Loans

Past due status is based on the contractual terms of loans. The majority of the Company’s non-covered portfolio exhibited an improvement in past due status from the end of the previous year.

At June 30, 2014, total past due loans excluding covered loans were 1.02% of total loans, a decrease of 23 basis points from December 31, 2013. Including covered loans, loans past due 30 days or more were 2.19% of total loans before discount adjustments at June 30, 2014 and 3.24% at December 31, 2013. Past due non-covered loans (including non-accrual loans) decreased $3.9 million, or 3.5%, from December 31, 2013, and can be attributed to lower levels of both non-accrual loans and loans past due more than 90 days. Additional information on non-covered past due loans is presented in the following table.

TABLE 8 - PAST DUE NON-COVERED LOAN SEGREGATION

	June 30, 2014
	Non-acquired					Acquired					Total
(Dollars in thousands)			% of Outstanding					% of Outstanding					% of Outstanding
	Amount		Balance			Amount		Balance			Amount		Balance
Accruing loans:
30-59 days past due	$	10,744		0.12	%	$	8,151		0.55	%	$	18,895		0.18	%
60-89 days past due		3,238		0.04			3,994		0.27			7,232		0.07
90-119 days past due		—		—			—		—			—		—
120 days past due or more		20		0.00			—		—			20		0.00
		14,002		0.16			12,145		0.82			26,147		0.25
Non-accrual loans (1)		34,187		0.39			45,064		3.05			79,251		0.77
	$	48,189		0.55	%	$	57,209		3.87	%	$	105,398		1.02	%
	December 31, 2013
	Non-acquired					Acquired					Total
(Dollars in thousands)			% of Outstanding					% of Outstanding					% of Outstanding
	Amount		Balance			Amount		Balance			Amount		Balance
Accruing loans:
30-59 days past due	$	13,426		0.16	%	$	3,251		0.67	%	$	16,677		0.19	%
60-89 days past due		7,965		0.10			2,580		0.53			10,545		0.12
90-119 days past due		108		0.00			103		0.02			211		0.00
120 days past due or more		967		0.01			437		0.09			1,404		0.02
		22,466		0.27			6,371		1.32			28,837		0.33
Non-accrual loans (1)		43,687		0.53			36,725		7.59			80,412		0.92
	$	66,153		0.80	%	$	43,096		8.91	%	$	109,249		1.25	%

⁽¹⁾  For acquired loans, balance represents the outstanding balance of loans that would otherwise meet the Company’s definition of nonaccrual loans.

The $3.9 million decrease in non-covered past due loans was the result of a $1.2 million decrease in non-accrual loans, and a $2.7 million decrease in accruing loans past due ($1.1 million of which were loans past due less than 90 days). Commercial non-accrual loans decreased $18.5 million, or 33.1%, while mortgage non-accrual loans increased $9.9 million and consumer non-accrual loans increased $7.4 million since December 31, 2013. The increase in mortgage and consumer non-accrual loans was a result of the placement of past due consumer loans on non-accrual status during the first two quarters of 2014 in response to their continued past due status. As a percentage of outstanding loans, consumer nonaccrual loans were 0.93% of consumer loans at June 30, 2014 and 0.74% at December 31, 2014.

In the non-covered commercial loan portfolio, total accruing loans past due decreased $7.7 million, or 39.7%, from December 31, 2013. Total non-covered mortgage loans past due increased $2.7 million during the first six months of 2014, with 99.7% due less than 90 days and 50.5% past due less than 60 days. At December 31, 2013, those percentages were 64.6% and 36.5%, respectively. Management is continually monitoring the past due status of these mortgage loans for indicators of overall asset quality issues.

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Covered Loans

The loans and foreclosed real estate that were acquired in the CSB, Orion, Century, and Sterling acquisitions in 2009 and 2010 are covered by loss share agreements between the FDIC and IBERIABANK, which afford IBERIABANK loss protection. As a result of the loss protection provided by the FDIC, the risk of loss on the acquired loans and foreclosed real estate can be significantly different from those assets not covered under the loss share agreements.

Although covered loans are not included in the Company’s non-performing assets, in accordance with bank regulatory reporting standards, both acquired loans considered impaired at the time of acquisition and those performing at the time of acquisition that meet the Company’s definition of a non-performing loan at each balance sheet date are discussed below. Included in the discussion are all covered loans that are contractually past due based on the number of days past due. Certain measures of the asset quality of covered loans are discussed below. Loan balances are reported before consideration of applied loan discounts, as these discounts were recorded based on the estimated cash flow of the total loan pool and not on a specific loan basis. The loss share agreements with the FDIC limit the Company’s exposure to loss during the loss claim period to no more than 20% of incurred losses for all covered loans and as little as 5% of incurred losses for certain loans. Therefore, balances discussed below are for general comparative purposes only and do not represent the Company’s risk of loss on covered assets.

TABLE 9 – PAST DUE COVERED LOAN SEGREGATION

	June 30, 2014					December 31, 2013
(Dollars in thousands)			% of Outstanding					% of Outstanding
	Amount		Balance			Amount		Balance
Accruing loans:
30-59 days past due	$	4,828		0.71	%	$	8,474		1.01	%
60-89 days past due		1,014		0.15			5,222		0.62
90-119 days past due		648		0.10			579		0.07
120 days past due or more		427		0.06			—		—
Total accruing loans		6,917		1.02			14,275		1.70
Non-accrual loans (1)		129,420		19.06			190,016		22.68
Total past due loans	$	136,337		20.08	%	$	204,291		24.38	%

⁽¹⁾  For covered loans, balance represents the outstanding balance of loans that would otherwise meet the Company’s definition of nonaccrual loans.

Total covered loans past due at June 30, 2014 totaled $136.4 million before discounts, a decrease of $68.0 million, or 33.3%, from December 31, 2013. The decrease is consistent with not only the overall decrease in the covered loan portfolio, but also with the steady improvement in asset quality in the covered loan portfolio over time. Past due loans at the end of the second quarter of 2014 included $129.4 million in loans that would otherwise meet the Company’s definition of non-accrual loans and $6.9 million in accruing loans past due greater than 30 days. Of the $6.9 million in accruing loans past due, $5.8 million, or 84.5%, were past due less than 90 days. The indemnification agreements on covered assets include a provision for recapture of a portion of interest if the interest is included in total losses on the covered asset.

Non-performing loans (defined as accruing loans greater than 90 days past due and loans that meet the definition of non-accrual loans) decreased $60.1 million, or 31.5% from December 31, 2013. These decreases were primarily a result of loan payments during the current year.

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Of the $626.0 million in covered assets at June 30, 2014, $348.4 million will lose loss share coverage within the next 12 months. The following table provides additional information as of June 30, 2014 on the covered assets losing loss share coverage within the next 12 months. When the coverage period ends, these assets will be included in asset quality information presented in Table 8 above as part of the non-covered acquired loans. Amounts in the table are presented gross of discounts unless otherwise noted.

TABLE 10 – COVERED ASSETS BY LOSS SHARE COVERAGE PERIOD

	Covered Assets
	Non-Single Family Residential Loans (Losing Loss Share Coverage within the next 12 months) (1)			Single Family Residential Loans (Losing Loss Share Coverage 10 years from Date of Acquisition)
(Dollars in thousands)
Loans, net	$	315,075		$	270,364
Other real estate owned		33,362			7,180
Allowance for loan losses		(42,582	)		(17,413	)
Nonaccrual loans	$	70,668		$	58,753
Foreclosed assets		971			—
Other real estate owned		28,762			10,809
Accruing loans more than 90 days past due		183			892
Nonperforming assets	$	100,584		$	70,454
Total past due loans	$	73,994		$	62,344
NPAs/(Loans + OREO)		28.87	%		25.38	%
(Past Dues & Nonaccruals)/Loans		23.48	%		23.06	%

⁽¹⁾  $34.2 million of loans are maintaining loss share coverage beyond the next 12 months. $3.1 million of indemnification asset is collectible from the FDIC and OREO transactions beyond the next twelve months.

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, including a qualitative component. These factors include, but are not limited to, the overall risk profiles of the loan portfolios, net charge-off experience, the extent of impaired loans, the level of non-accrual loans, the level of 90 days past due loans and the overall percentage level of the allowance. The Company also considers overall asset quality trends, changes in lending and risk management practices and procedures, trends in the nature and volume of the loan portfolio, including the existence and effect of any portfolio concentrations, changes in experience and depth of lending staff, the Company’s legal, regulatory and competitive environment, national and regional economic trends, and data availability and applicability that might impact the portfolio. See the “Application of Critical Accounting Policies and Estimates” section of the Company’s Form 10-K filing for the year ended December 31, 2013 for more information.

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During the first six months of 2014, the Company did not substantively change any material aspect of its overall approach in the determination of the allowance for credit losses and there have been no material changes in assumptions or estimation techniques as compared to December 31, 2013. However, during the second quarter of 2013, the Company modified its methodology for estimating its allowance for credit losses on its non-covered, non-acquired loan portfolio to incorporate practices, processes, and methodologies consistent with the guidance provided in the FRB’s inter-agency policy statement 2006 SR 06-17. The methodology was modified to segregate the reserve for unfunded lending commitments (“RULC”), previously included in the Company’s allowance for loan losses, into a separate liability on the Company’s consolidated balance sheet, and to enhance the previous methodology around loss migration.

Certain inherent but unconfirmed losses are probable within the loan portfolio. The Company’s current methodology for determining the level of losses is based on historical loss rates, current credit grades, specific allocation and other qualitative adjustments. In a stable or deteriorating credit environment, heavy reliance on historical loss rates and the credit grade rating process results in model-derived required reserves that tend to slightly lag behind portfolio deterioration. Similar lags can occur in an improving credit environment whereby required reserves can lag slightly behind portfolio improvement. Given these model limitations, qualitative adjustment factors may be incremental or decremental to the quantitative model results.

The manner in which the allowance for credit losses is determined is based on the accounting method applied to the underlying loans. The Company delineates between loans accounted for under the contractual yield method, primarily legacy loans, and loans accounted for as purchased impaired loans, primarily acquired loans.

Legacy Loans

Legacy loans represent loans accounted for under the contractual yield method. The Company’s legacy loans include loans originated by the Company and acquired loans that are not accounted for as acquired credit impaired loans.

Acquired Loans

Acquired loans, which include covered loans and certain non-covered loans, represent loans acquired by the Company that are accounted for in accordance with ASC 310-30 and ASC 310-10. See the discussion above for more information.

Loans acquired in business combinations were recorded at their acquisition date fair values, which were based on expected cash flows and included estimates of expected future credit losses. Under current accounting principles, information regarding the Company’s estimates of loan fair values may be adjusted for a period of up to one year as the Company continues to refine its estimate of expected future cash flows in the acquired portfolio. Within a one-year period, if the Company discovers that it has materially underestimated the credit losses expected in the loan portfolio based on information available at the acquisition date, it will retroactively reduce or eliminate the gain and/or increase goodwill recorded on the acquisition. If the Company determines that losses arose after the acquisition date, the additional losses will be reflected as a provision for credit losses.

At June 30, 2014, the Company had an allowance for credit losses of $60.0 million and $2.9 million in the covered loan and acquired loan portfolios, respectively, to reserve for probable losses currently in those portfolios that have arisen after the losses estimated at the respective acquisition dates.

Based on facts and circumstances available, management of the Company believes that the allowance for credit losses was appropriate at June 30, 2014 and December 31, 2013 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.

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The following tables set forth the activity in the Company’s allowance for credit losses for the periods indicated.

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

	June 30, 2014												June 30, 2013
				Non-covered loans												Non-covered loans
(Dollars in thousands)	Covered Loans			Legacy Loans			Acquired Loans			Total			Covered Loans			Legacy Loans			Acquired Loans			Total
Allowance for loan losses
Balance at beginning of period	$	71,175		$	67,342		$	4,557		$	143,074		$	168,576		$	74,211		$	8,816		$	251,603
(Reversal of) Provision for loan losses before benefit attributable to FDIC loss share agreements		(740	)		5,078			(1,085	)		3,253			(55,060	)		(585	)		(1,009	)		(56,654	)
Benefit attributable to FDIC loss share agreements		3,598			—			—			3,598			55,085			—			—			55,085
Net (reversal of) provision for loan losses		2,858			5,078			(1,085	)		6,851			25			(585	)		(1,009	)		(1,569	)
(Decrease) Increase in FDIC loss share receivable		(3,598	)		—			—			(3,598	)		(55,085	)		—			—			(55,085	)
Transfer of balance to OREO		(5,085	)		—			(523	)		(5,608	)		(16,712	)		—			(973	)		(17,685	)
Transfer of balance to the RUFC		—			—			—			—			—			(9,828	)		—			(9,828	)
Loan charge-offs		(5,393	)		(5,198	)		(182	)		(10,773	)		(2,334	)		(4,249	)		—			(6,583	)
Recoveries		38			3,426			109			3,573			—			2,050			—			2,050
Balance at end of period		59,995			70,648			2,876			133,519			94,470			61,599			6,834			162,903
Reserve for unfunded lending commitments
Balance at beginning of period		—			11,147			—			11,147			—			—			—			—
Transfer of balance from the RUFC		—			—			—			—			—			9,828			—			9,828
Provision for unfunded lending commitments		—			113			—			113			—			514			—			514
Balance at end of period		—			11,260			—			11,260			—			10,342			—			10,342
Allowance for credit losses	$	59,995		$	81,908		$	2,876		$	144,779		$	94,470		$	71,941		$	6,834		$	173,245

The allowance for credit losses was $144.8 million at June 30, 2014, or 1.33% of total loans, which is $9.4 million lower than at December 31, 2013. The allowance as a percentage of loans was 29 basis points below the 1.62% at December 31, 2013.

The decrease in the allowance was primarily related to a decrease in reserves on the covered and acquired loan portfolios. The allowance for credit losses on the covered portion of the loan portfolio decreased $11.2 million primarily due to a change in expected cash flows on certain of the acquired loan pools during the first quarter of 2014. The reserve was adjusted to cover the expected losses in these pools. On a gross basis, the Company was able to reverse $3.6 million to account for these estimated cash flow changes. The reserve was also reduced by $5.1 million when loan collateral was moved to OREO during the first six months of 2014.

For the non-covered portfolio, the allowance for credit losses on the legacy portfolio increased $3.4 million, or 4.4%, since December 31, 2013. Legacy asset quality improved over the prior year as evidenced by continued lower levels of net charge-offs and past due loans, which offset the additional allowance needed to reserve for legacy loan growth over the past six months. The non-covered allowance for credit losses, however, includes a reserve of $2.9 million for probable losses in the acquired portfolios at June 30, 2014 above estimated expected credit losses at acquisition.

At June 30, 2014 and December 31, 2013, excluding the acquired loan portfolios, the allowance for loan losses covered non-performing loans 2.1 times and 1.5 times, respectively. Including acquired non-covered loans, the allowance for loan losses covered 69.8% of total past due and non-accrual loans at June 30, 2014, an increase compared to the December 31, 2013 coverage of 65.8%.

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FDIC Loss Share Receivable

As part of the FDIC-assisted acquisitions in 2009 and 2010, the Company recorded $1.0 billion in receivables from the FDIC, which represents the fair value of the expected reimbursable losses covered by the loss share agreements as of the acquisition dates. The FDIC loss share receivables decreased $41.8 million, or 25.7%, during the first six months of 2014 as the Company reduced the balances $3.6 million to offset the allowance for credit loss adjustment recorded and $36.3 million as a result of amortization during the first six months of 2014. See Note 8 to the unaudited consolidated financial statements for discussion of the reimbursable loss periods of the loss share agreements.

The following table sets forth the activity in the FDIC loss share receivable asset for the periods indicated.

TABLE 12 - FDIC LOSS SHARE RECEIVABLE ACTIVITY

	For the Six Months Ended June 30,
(Dollars in thousands)	2014			2013
Balance at beginning of period	$	162,312		$	423,069
Change due to (reversal of) credit loss provision recorded on FDIC covered loans		(3,598	)		(55,085	)
Amortization		(36,273	)		(45,831	)
Submission of reimbursable losses (recoveries payable to) the FDIC		2,215			(42,043	)
Impairment		(804	)		(31,813	)
Changes due to a change in cash flow assumptions on OREO and other changes		(3,320	)		(7,257	)
Balance at end of period	$	120,532		$	241,040

Based on improving economic trends, their impact on the amount and timing of expected future cash flows, and delays in the foreclosure process, the Company concluded that certain expected losses are probable of not being collected from the FDIC or the customer because such projected losses are anticipated to occur beyond the reimbursable periods of the loss share agreements. In both 2014 and 2013, management concluded, with agreement from the Board of Directors, that an impairment charge should be recognized in the consolidated financial statements for the six-month periods ended June 30, 2014 and 2013. Therefore, the Company recognized a valuation allowance against the indemnification assets in the amount of $31.8 million in 2013 and $0.8 million in 2014 through a charge to net income.

Of the FDIC loss share receivables balance of $120.5 million at June 30, 2014, approximately $22.0 million is expected to be collected from the FDIC, $85.1 million, which represents improvements in cash flows expected to be collected from customers, is expected to be amortized over time, and $13.4 million is expected to be collected in conjunction with OREO transactions. For certain covered assets, loss share coverage expires in the next 12 – 18 months. At June 30, 2014, the FDIC loss share receivables included $0.9 million and $8.9 million related to these assets that is expected to be collected from the FDIC and OREO transactions, respectively. To the extent that loss share coverage ends prior to triggering events on covered assets that would enable the Company to collect these amounts from the FDIC or OREO transactions, future impairments would be required.

The Company may owe consideration previously received under indemnification agreements to the FDIC under the “clawback” provisions in three of these agreements. The clawback provisions generally stipulate that in the event of not meeting certain thresholds of loss, the Company is required to pay the FDIC a percentage as defined in the respective agreements. Cumulative losses to date under two of these agreements have exceeded the calculated loss amounts, which would result in clawback if not incurred. However, the sum of the historical and remaining projected losses under the remaining agreement is in excess of the clawback amount stated in that agreement. For the third agreement, the Company has recorded a $0.8 million liability at June 30, 2014 to reserve for the amount of consideration due to the FDIC based on cumulative losses to date. However, the future performance of the remaining covered assets (namely improvements in the forms of recoveries and/or reduced losses) for each of the three agreements beyond each agreement’s respective collection period could require the Company to be subject to the clawback provisions for that agreement.

Refer to the “Other Assets” discussion below for additional amounts due from the FDIC related to loss share agreements.

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Investment Securities

Investment securities increased by $50.3 million, or 2.4%, from December 31, 2013 to June 30, 2014 due to both acquired investment securities and open-market security purchases. Investment securities decreased to 14.0% of total assets at June 30, 2014, from 15.6% at December 31, 2013. Investment securities were 17.0% of average earnings assets in the first six months of 2014 and 17.5% in the same period of 2013. The following table shows the carrying values of securities by category as of the dates indicated.

TABLE 13 - CARRYING VALUE OF SECURITIES

(Dollars in thousands)	June 30, 2014				December 31, 2013
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	367,394	17	%	$	395,561	19	%
Obligations of state and political subdivisions		102,607	5			107,479	5
Mortgage-backed securities		1,537,465	72			1,432,278	68
Other securities		1,487	—			1,479	—
Total securities available for sale		2,008,953	94			1,936,797	92
Securities held to maturity:
U.S. Government-sponsored enterprise obligations		17,499	1			34,478	2
Obligations of state and political subdivisions		82,073	4			84,290	4
Mortgage-backed securities		32,673	1			35,341	2
Total securities held to maturity		132,245	6			154,109	8
Total investment securities	$	2,141,198	100	%	$	2,090,906	100	%

All of the Company’s mortgage-backed securities are agency securities. 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, sub-prime, Alt-A, or second lien elements in its investment portfolio. At June 30, 2014 and December 31, 2013, the Company’s investment portfolio did not contain any securities that are directly backed by subprime or Alt-A mortgages.

The following table summarizes activity in the Company’s investment securities portfolio during the first six months of 2014 and 2013. There were no transfers of securities between investment categories during the periods.

TABLE 14 - INVESTMENT PORTFOLIO ACTIVITY

(Dollars in thousands)	Available for Sale						Held to Maturity
	2014			2013			2014			2013
Balance at beginning of period	$	1,936,797		$	1,745,004		$	154,109		$	205,062
Purchases		169,807			760,640			—			5,901
Acquisitions		44,123			—			—			—
Sales, net of gains		(14,023	)		(42,413	)		—			—
Principal maturities, prepayments and calls, net of gains		(154,111	)		(494,593	)		(21,383	)		(47,061	)
Amortization of premiums and accretion of discounts		(6,232	)		(10,022	)		(481	)		(662	)
Change in market value		32,592			(46,558	)		—			—
Balance at end of period	$	2,008,953		$	1,912,058		$	132,245		$	163,240

Funds generated as a result of sales and prepayments 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.

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The Company assesses the nature of the losses in its investment portfolio periodically to determine if there are losses that are deemed other-than-temporary. In its analysis of these securities, management considers numerous factors to determine whether there are instances where the amortized cost basis of the debt securities would not be fully recoverable, including, but not limited to:

• The length of time and extent to which the fair value of the securities was less than their amortized cost,

• Whether adverse conditions were present in the operations, geographic area, or industry of the issuer,

• The payment structure of the security, including scheduled interest and principal payments, including the issuer’s failures to make scheduled payments, if any, and the likelihood of failure to make scheduled payments in the future,

• Changes to the rating of the security by a rating agency, and

• Subsequent recoveries or additional declines in fair value after the balance sheet date.

Management believes it has considered these factors, as well as all relevant information available, when determining the expected future cash flows of the securities in question. Based on its analysis, the Company recorded an other-than-temporary impairment charge of $0.5 million on one unrated municipal revenue bond in 2011. During that year, management assessed the operating environment of the bond issuer as adverse and thus concluded the other-than-temporary impairment charge was warranted. The specific impairment was related to the loss of the contracted revenue source required for bond repayment. The total impairment recorded was 50% of the par value of the bond and provided a fair value of the bonds that was consistent with market pricing at that time. Because adverse conditions were noted in the operations of the bond issuer, the Company recorded the other-than-temporary impairment, but since has noted no further deterioration in the operating environment of the bond issuer. No other declines in the market value of the Company’s investment securities are deemed to be other-than-temporary at June 30, 2014 and December 31, 2013. Note 5 to the unaudited consolidated financial statements provides further information on the Company’s investment securities.

Short-term Investments

Short-term investments result from excess funds invested overnight in interest-bearing deposit accounts at the FHLB of Dallas and Atlanta. These balances fluctuate daily depending on the funding needs of the Company and earn interest at the current FHLB discount rate. The balance in interest-bearing deposits at other institutions of $382.0 million at June 30, 2014 increased $229.2 million, or 150.1%, from December 31, 2013. The primary cause of the increase was the Company’s acquisition of interest-bearing deposits from Teche and First Private, partially offset by the use of available cash to purchase higher-yielding investment securities, fund loan growth, and pay down its long-term debt, all in an attempt to improve its net interest margin. The Company’s cash activity is further discussed in the “Liquidity” section below.

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Other Assets

The following table details the changes in other asset balances as of the periods indicated.

TABLE 15—OTHER ASSETS COMPOSITION

(Dollars in thousands)	June 30, 2014		December 31,  2013		Increase (Decrease)
Other Earning Assets
FHLB and FRB stock	$	76,119	$	53,773	$	22,346		41.6	%
Fed funds sold and financing transactions		—		—		—		—
Other interest-earning assets (1)		3,412		3,412		—		—
Total other earning assets		79,531		57,185		22,346		39.1
Non-Earning Assets
Premises and equipment		307,090		287,510		19,580		6.8
Bank-owned life insurance		120,476		104,203		16,273		15.6
Goodwill		524,154		401,872		122,282		30.4
Core deposit intangibles		17,429		14,622		2,807		19.2
Title plant and other intangible assets		7,694		7,439		255		3.4
Accrued interest receivable		36,043		32,143		3,900		12.1
Other real estate owned		84,479		99,173		(14,694	)	(14.8	)
Derivative market value		40,291		30,076		10,215		34.0
Receivable due from the FDIC		1,416		2,609		(1,193	)	(45.7	)
Investment in tax credit entities		133,144		132,487		657		0.5
Other		99,607		74,230		25,377		34.2
Total non-earning assets		1,371,823		1,186,364		185,459		15.6
Total other assets	$	1,451,354	$	1,243,549	$	207,805		16.7	%

⁽¹⁾  Other interest-earning assets are composed primarily of trust preferred common securities.

The $22.3 million increase in FHLB and FRB stock was the result of $8.7 million in acquired stock, as well as $13.6 million in net stock purchases during the first six months of 2014.

Fed funds sold and financing transactions represent short-term excess liquidity, and the balance varies based on the daily requirements of short-term liquidity needed by the Company and its subsidiaries for loan growth and other operating activities. There were no fed funds sold or financing transactions at June 30, 2014 or December 31, 2013. The balance of other interest-earning assets did not change from the end of 2013.

Premises and equipment increased $19.6 million as a result of $24.3 million in acquired property and equipment from Teche, First Private, and Trust One-Memphis. Current period depreciation expense recorded on the assets in service and former bank properties moved to OREO partially offset the acquired premises and equipment.

Bank-owned life insurance increased $16.3 million as a result of $15.5 million in acquired policies from Teche and income earned on the outstanding policies during the first six months of 2014.

Core deposit intangibles increased $2.8 million during the current period, the result of an additional $5.2 million in core deposit intangibles recorded as part of the Trust One-Memphis, Teche and First Private acquisitions, which was partially offset by amortization expense recorded during the first six months of 2014.

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Other real estate includes all real estate, other than bank premises used in bank operations, which is owned or controlled by the Company, including real estate acquired in settlement of loans and former bank premises no longer used. The $14.7 million decrease in OREO from December 31, 2013 was a result of the sale of OREO properties. Covered OREO properties at June 30, 2014 were $21.3 million, or 34.4%, lower than at the end of 2013. Covered OREO properties were $40.5 million and $61.8 million at June 30, 2014 and December 31, 2013, respectively. Non-covered OREO increased $6.6 million, or 17.6%, and was primarily a result of the acquisition of $1.7 million from Teche and Trust One-Memphis and the movement of $9.4 million in former bank properties to OREO during the first six months of 2014. Sales of non-covered OREO properties during the first half of 2014 partially offset these increases.

The increase in the market value of the Company’s derivatives was primarily the result of the change in value of existing derivatives from December 31, 2013, and not a result of a significant increase in derivative activity. The value of the derivatives at June 30, 2014 was positively affected by interest rates at the end of the second quarter.

The receivable due from the FDIC from claims associated with the loss share agreements decreased $1.2 million during the first six months of 2014 compared to December 31, 2013. The balance at June 30, 2014 was a result of the timing of repayment from the FDIC of losses submitted and timing of losses incurred. The Company’s submission of losses has remained steady as the Company continues to manage the covered assets to ultimate disposition in a manner that is of least loss to the FDIC. The balance due from the FDIC includes the reimbursable portion of incurred losses, net of recoveries (as those terms are defined in the respective loss share agreements) and reimbursable expenses, which were approximately $1.7 million and $2.8 million at June 30, 2014 and December 31, 2013, respectively.

Investments in tax credit entities increased $0.7 million as a result of additional low-income housing tax credit investments totaling $5.8 million in the first half of 2014, partially offset by the amortization of tax credits as they are recognized in the Company’s income tax provision calculation.

The $25.4 million increase in other assets since December 31, 2013 was primarily the result of a $24.8 million increase in the Company’s net current and deferred income tax receivable as a result of additional estimated income tax payments recorded during the first six months of 2014, as well as acquired deferred tax assets. Also affecting other assets was a $2.2 million increase in deferred compensation assets held that are related to current year employee compensation deferrals. Offsetting these increases were decreases in prepaid assets and other current receivables since December 31, 2013.

There were no significant changes in the Company’s title plant or other intangible asset balances since December 31, 2013. Additional intangible assets created in the LTC acquisitions of The Title Company LLC and Louisiana Abstract and Title, LLC during the first six months of 2014 were offset by amortization expense on existing intangible assets.

FUNDING SOURCES

Deposits obtained from clients in its primary market areas 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 accounts, competitive interest rates and convenient branch office locations and service hours. Increasing core deposits through acquisitions and the development of client relationships is a continuing focus of the Company. Short-term and long-term borrowings have become an important funding source as the Company has grown. Other funding sources include subordinated debt and shareholders’ equity. Refer to the “Liquidity” section below for further discussion of the Company’s sources and uses of funding sources. The following discussion highlights the major changes in the mix of deposits and other funding sources from December 31, 2013.

Deposits

The Company’s ability to attract and retain customer deposits is critical to the Company’s continued success. During the first six months of 2014, total deposits increased $1.2 billion, or 11.6%, totaling $12.0 billion at June 30, 2014. Total non-interest-bearing deposits increased $471.4 million and interest-bearing deposits increased $772.7 million, or 9.5%, from December 31, 2013. Acquired deposits of $1.1 billion from Teche, First Private, and Trust One-Memphis accounted for the majority of the increase from year-end.

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The following table and chart set forth the composition of the Company’s deposits for the periods indicated.

TABLE 16 - DEPOSIT COMPOSITION BY PRODUCT

(Dollars in thousands)	June 30, 2014				December 31, 2013				Increase (Decrease)
Non-interest-bearing deposits	$	3,047,385	25	%	$	2,575,939	24	%	$	471,446		18.3	%
NOW accounts		2,233,993	19			2,283,491	22			(49,498	)	(2.2	)%
Money market accounts		4,092,724	34			3,779,581	35			313,143		8.3	%
Savings accounts		592,643	5			387,397	3			205,246		53.0	%
Certificates of deposit		2,014,438	17			1,710,592	16			303,846		17.8	%
Total deposits	$	11,981,183	100	%	$	10,737,000	100	%	$	1,244,183		11.6	%

From a product perspective, interest-bearing deposits increased $772.7 million. Interest-bearing core deposit increases totaled $468.9 million, while time deposits increased $303.8 million. Certificates of deposit in denominations of $100,000 and over increased $61.8 million, or 6.8%, to $968.1 million at June 30, 2014. The increase was seen in many of the Company’s markets, including the Little Rock, Arkansas, Acadiana, and Southwest Louisiana markets.

Non-interest-bearing deposits continue to provide the Company with a good source of available funds for continued earning asset growth. Non-interest-bearing deposits as a percentage of total deposits have steadily risen over the past six months, from 24.0% at December 31, 2013 to 25.4% at June 30, 2014.

From a market perspective, total deposit growth was seen primarily in the Acadiana (Louisiana) and Little Rock, Arkansas markets. Acadiana’s customer deposits increased $43.2 million, or 2.1%, during the first six months of 2014. Total deposits in the Little Rock market increased $56.8 million, or 11.8%, since the end of 2013, while the Southwest Louisiana market had total customer deposit growth of $39.2 million, or 7.6%. Total deposit growth was offset, however, by deposit runoff in the New Orleans, Louisiana market and other markets, most notably Sarasota, Florida and Houston, Texas.

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 have rates ranging from 0.09% to 0.80%. The following table details the average and ending balances of repurchase transactions as of and for the quarters ended June 30:

TABLE 17 – REPURCHASE TRANSACTIONS

(Dollars in thousands)	2014		2013
Average balance	$	274,681	$	294,712
Ending balance		296,741		289,377

Total short-term borrowings increased $354.4 million, or 52.1%, from December 31, 2013, to $1.0 billion at the end of the second quarter of 2014, a result of both acquired short-term borrowings from Teche and First Private and additional FHLB short-term advances originated by the Company. The increase was primarily the result of an additional $363.0 million in short-term FHLB advances outstanding at June 30 2014. The Company borrowed these funds in order to manage its liquidity as it funded loan growth in the fourth quarter of 2013 and first half of 2014. On an average basis, short-term borrowings increased $453.0 million, or 154.1%, from the first six months of 2013. The increase in the average outstanding balance was largely due to the FHLB advances outstanding at June 30, 2014 (there were minimal short-term FHLB advances outstanding during the first six months of 2013), as management’s decision has typically been to use available cash to reduce higher-cost funding sources.

Total short-term borrowings were 7.7% of total liabilities and 73.9% of total borrowings at June 30, 2014 compared to 5.7% and 70.8%, respectively, at December 31, 2013. On an average basis, short-term borrowings were 7.3% of total liabilities and 74.9% of total borrowings in the second quarter of 2014, compared to 2.6% and 50.1%, respectively, during the second quarter of 2013.

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The weighted average rate paid on short-term borrowings was 0.16% during the first six months of 2014, down two basis points compared to 0.18% for the first two quarters of 2013.

Long-term Debt

The Company’s long-term borrowings increased $85.0 million, or 30.3%, from December 31, 2013, a result of acquired Teche and First Private borrowings, offset partially by the scheduled repayment of a portion of the Company’s long-term FHLB advances during 2014. The Company’s efforts to periodically reduce the balance of these higher-priced long-term borrowings has led to a $0.8 million reduction in interest expense on long-term debt in 2014 when compared to the same period of 2013, despite the 13 basis point increase in the average rate paid on the debt.

On average, long-term debt decreased to $292.5 million in the first six months of 2014, $60.0 million, or 17.0%, lower than for the same period of 2013. Average long-term debt was 2.4% of total liabilities during the current year, lower than the average during 2013 of 3.1%. On a period-end basis, long-term debt was 2.7% of total liabilities at June 30, 2014, an increase from 2.4% of total liabilities at December 31, 2013.

Long-term borrowings at June 30, 2014 included $177.6 million in fixed-rate advances from the FHLB of Dallas that cannot be paid off without incurring substantial prepayment penalties. The remaining debt consisted of $111.9 million of the Company’s junior subordinated deferrable interest debentures and $76.3 million in notes payable on investments in new market tax credit entities. The debentures are issued to statutory trusts that were funded by the issuance of floating rate capital securities of the trusts and qualify as Tier 1 Capital for regulatory purposes. Interest is payable quarterly and may be deferred at any time at the election of the Company for up to 20 consecutive quarterly periods. During any deferral period, the Company is subject to certain restrictions, including being prohibited from declaring dividends to its common shareholders. The securities are redeemable by the Company in whole or in part after five years, or earlier under certain circumstances.

Shareholders’ Equity

Shareholders’ equity provides a source of permanent funding, allows for future growth, and provides the Company with a cushion to withstand unforeseen adverse developments. At June 30, 2014, shareholders’ equity totaled $1.8 billion, an increase of $268.3 million, or 17.5%, compared to December 31, 2013. The following table details the changes in shareholders’ equity during the six months ended June 30, 2014 and 2013.

TABLE 18 - CHANGES IN SHAREHOLDERS’ EQUITY

(Dollars in thousands)	2014			2013
Balance, beginning of period	$	1,530,979		$	1,529,868
Net income		40,943			16,307
Common stock issued for acquisitions		214,665			—
Other comprehensive income (loss)		21,184			(29,389	)
Reissuance of treasury stock under management incentive plans, net of shares surrendered		7,186			2,911
Cash dividends declared		(21,573	)		(20,197	)
Share-based compensation cost		5,922			5,261
Balance, end of period	$	1,799,306		$	1,504,761

During the six months ended June 30, 2014, the Company issued 3.3 million additional common shares as part of the Teche and First Private acquisitions, which resulted in $214.7 million in additional shareholders’ equity. Net income of $40.9 million for the first six months of 2014 was offset by dividend payments to common shareholders of $21.6 million, or $0.68 per common share, in the first half of 2014. Shareholder’s equity also increased $21.2 million as a result of an increase in the fair value of the Company’s available for sale investment securities.

CAPITAL RESOURCES

Federal regulations impose minimum regulatory capital requirements on all institutions with deposits insured by the Federal Deposit Insurance Corporation. 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 June 30, 2014 and December 31, 2013, the Company exceeded all required regulatory capital ratios, and the Company’s regulatory capital ratios and those of IBERIABANK were also in excess of the levels established for “well-capitalized” institutions, as shown in the following table.

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TABLE 19 - REGULATORY CAPITAL RATIOS

(Dollars in thousands)			Well-Capitalized			June 30, 2014			December 31, 2013
Ratio	Entity		Minimums			Actual			Actual
Tier 1 Leverage		Consolidated		5.00	%		10.03	%		9.70	%
		IBERIABANK		5.00			8.90			8.46
Tier 1 risk-based capital		Consolidated		6.00			11.23			11.57
		IBERIABANK		6.00			9.97			10.08
Total risk-based capital		Consolidated		10.00			12.44			12.82
		IBERIABANK		10.00			11.17			11.33

⁽¹⁾  Excess capital is defined as the dollar amount of the Company’s capital above minimum capital required to remain “well capitalized” under current guidelines but does not represent the Company’s view of optimum capital levels.

The decrease in risk-based capital ratios from December 31, 2013 was primarily the result of the Company’s acquisitions of Teche and First Private, as well as the deployment of excess liquidity that carried a 0% risk weighting into loans and other investments that carried a higher risk rating, namely loans and investment securities. Also affecting capital ratios at June 30, 2014 was a decrease in covered assets, which typically are assigned a lower risk rating.

The Company’s Tier 1 leverage ratio of 10.03% at June 30, 2014 was 33 basis points above the December 31, 2013 Tier 1 leverage ratio of 9.70%. The increase in the Tier 1 leverage ratio is a function of the use of the Company’s quarter-to-date average assets in the calculation, which only reflected acquired Teche and First Private assets for the respective periods after acquisition. If the Company’s end-of-period assets were used, the Company’s pro-forma Tier 1 leverage ratio as a percentage of total assets adjusted for leverage capital purposes would have been 9.16%, which is more representative of the Company’s expectations for its Tier 1 leverage ratio going forward.

At both June 30, 2014 and December 31, 2013, $108.5 million of the Company’s junior subordinated debt was included as Tier 1 capital in the Company’s risk-based capital ratios above. Due to the Company’s acquisitions of Teche and First Private during the second quarter of 2014, the Company will begin to phase out its junior subordinated debt from Tier 1 capital. Effective January 1, 2015, 75% of the Company’s junior subordinated debt will be excluded from Tier 1 capital. The remaining 25% will be excluded effective January 1, 2016. Once excluded from Tier 1 capital, the Company’s junior subordinated debt will be included as Tier 2 capital, a component of total risk-based capital above.

Regulatory Developments

In July 2013, the U.S. banking regulatory agencies, including the FRB, approved a final rule to implement the revised capital adequacy standards of the Basel Committee on Banking Supervision or “Basel III”, and to address relevant provisions of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”). The Company and IBERIABANK will become subject to the new rules on January 1, 2015, and certain provisions of the new rules will be phased in from that date to January 1, 2019.

The final rules:

• Permit banking organizations that had less than $15 billion in total consolidated assets as of December 31, 2009, to include as Tier 1 capital trust preferred securities and cumulative perpetual preferred stock that were issued and included as Tier 1 capital prior to May 19, 2010, subject to a limit of 25% of Tier 1 capital elements, excluding any non-qualifying capital instruments and after all regulatory capital deductions and adjustments have been applied to Tier 1 capital,

• Establish new qualifying criteria for regulatory capital, including new limitations on the inclusion of deferred tax assets and mortgage servicing rights,

• Require a minimum of ratio of common equity Tier 1, or CET1, capital to risk-weighted assets of 4.5%,

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• Increase the minimum Tier 1 capital to risk-weighted assets ratio requirements from 4% to 6%,

• Retain the minimum total capital to risk-weighted assets ratio requirement of 8%,

• Establish a minimum leverage ratio requirement of 4%,

• Retain the existing regulatory capital framework for 1-4 family residential mortgage exposures,

• Implement a new capital conservation buffer requirement for a banking organization to maintain a CET1 capital ratio more than 2.5% above the minimum CET1 capital, Tier 1 capital and total risk-based capital ratios in order to avoid limitations on capital distributions, including dividend payments, and certain discretionary bonus payments to executive officers. The capital conservation buffer requirement will be phased in beginning on January 1, 2016 at 0.625%, and will be fully phased in at 2.50% by January 1, 2019. A banking organization with a buffer of less than the required amount would be subject to increasingly stringent limitations on such distributions and payments as the buffer approaches zero. The new rule also generally prohibits a banking organization from making such distributions or payments during any quarter if its eligible retained income is negative and its capital conservation buffer ratio was 2.5% or less at the end of the previous quarter. The eligible retained income of a banking organization is defined as its net income for the four calendar quarters preceding the current calendar quarter, based on the organization’s quarterly regulatory reports, net of any distributions and associated tax effects not already reflected in net income,

• Increase capital requirements for past-due loans, high volatility commercial real estate exposures, and certain short-term commitments and securitization exposures,

• Expand the recognition of collateral and guarantors in determining risk-weighted assets, and

• Remove references to credit ratings consistent with the Dodd-Frank Act and establishes due diligence requirements for securitization exposures.

Management continues to evaluate the provisions of the final rules and their expected impact on the Company and IBERIABANK. Management believes that at June 30, 2014, the Company and IBERIABANK would have met all new capital adequacy requirements on a fully phased-in basis if such requirements were then effective. There can be no assurances that the Basel III capital rules will not be revised before the effective date and expiration of the phase-in periods.

RESULTS OF OPERATIONS

The Company reported income available to common shareholders of $18.5 million and $15.6 million for the three months ended June 30, 2014 and 2013, respectively. Earnings per share (“EPS”) on a diluted basis were $0.60 for the second quarter of 2014 and $0.53 for the second quarter of 2013. For the six-month period ended June 30, 2014, income available to common shareholders of $40.9 million, or $1.35 per diluted share, was $24.6 million higher than for the same six-month period of 2013.

In the second quarter of 2014, net interest income increased $12.5 million, or 13.0%, over the second quarter of 2013, as interest income increased $11.0 million, or 10.2%, and interest expense decreased $1.5 million, or 12.4%. Net interest income increased as a result of an increase in average earning assets and an 8 basis point decrease in the cost of interest-bearing liabilities. Income available to common shareholders was negatively impacted by a $2.9 million increase in the provision for loan losses, but was positively impacted by a $5.5 million increase in non-interest income, the drivers of which are discussed below in the “Non-interest Income” section of the discussion.

As a result of higher pre-tax income, income tax expense increased $2.1 million in the second quarter of 2014 when compared to the same period of 2013. Cash earnings, defined as net income before the net-of-tax amortization of acquisition intangibles, were $19.4 million and $16.4 million for the quarterly periods ended June 30, 2014 and 2013, respectively.

For the six months ended June 30, 2014, net interest income increased $24.0 million, or 12.7%, over the six months ended June 30, 2013, while non-interest income decreased $3.3 million, or 3.8%, non-interest expense decreased $27.5 million, or 10.5%, and income tax expense increased $15.1 million.

The following discussion provides additional information on the Company’s operating results for the three and six months ended June 30, 2014 and 2013, segregated by major income statement caption.

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Net Interest Income

Net interest income is the difference between interest realized on earning assets and interest paid on interest-bearing liabilities and is also the driver of core 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 3.38% and 3.29% during the three months ended June 30, 2014 and 2013, respectively, and 3.40% and 3.20% for the respective six-month periods. The Company’s net interest margin on a taxable equivalent (“TE”) basis, which is net interest income (TE) as a percentage of average earning assets, was 3.48% and 3.39% for the second quarters of 2014 and 2013, respectively, and 3.51% and 3.31% for the six-month periods.

Net interest income increased $12.5 million for the second quarter of 2014 when compared to the same period of 2013, and $24.0 million, or 12.7%, on a year-to-date basis. The improvement in net interest income was the result of an increase in average earning assets, improvement in earning asset yield, and a decrease in the average cost of interest-bearing liabilities. The average balance sheet growth over the past twelve months is primarily a result of growth in both earning assets and deposits.

Average loans made up 78.9% and 73.9% of average earning assets in the first two quarters of 2014 and 2013, respectively. Quarter-to-date average loans increased $831.3 million, or 9.1%, from the fourth quarter of 2013 and $1.3 billion, or 14.3%, from the second quarter of 2013, both as a result of acquired loans and organic loan growth in the non-covered loan portfolio. Investment securities made up 17.0% of average earning assets during the first two quarters of 2014, compared to 17.5% during the same period of 2013. Over the past year, management has focused efforts to reduce its lower-yielding excess liquidity (defined as fed funds sold and interest-bearing cash) by investing in higher-yielding loans and investment securities, as well as paying down its short-term and long-term debt in efforts to improve net interest income. Other components of earning assets during the first six months of 2014 included the FDIC loss share receivable (1.2% of average earning assets) and excess liquidity (1.4% of average earning assets). During the first two quarters of 2013, the FDIC loss share receivable was 2.8% of average earning assets, with excess liquidity accounting for 3.9% of average earning assets.

Average interest-bearing deposits made up 88.8% of average interest-bearing liabilities during the first six months of 2014, down from 93.1% during the first two quarters of 2013. Average short-term and long-term borrowings made up 8.1% and 3.1% of average interest-bearing liabilities, respectively, thus far in 2014, compared to 3.1% and 3.8%, respectively, during the first six months of 2013.

The following tables set forth, for the three months and six months ended June 30, 2014 and 2013, 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 is included in non-earning assets. TE yields are calculated using a marginal tax rate of 35%.

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TABLE 20 – QUARTER-TO-DATE AVERAGE BALANCES, NET INTEREST INCOME AND INTEREST YIELDS / RATES

	Three Months Ended June 30,
	2014									2013
	Average			Interest			Yield/			Average			Interest			Yield/
(Dollars in thousands)	Balance			Income/Expense			Rate			Balance			Income/Expense			Rate
Earning Assets:
Loans receivable:
Commercial loans (TE)	$	7,113,400		$	85,614			4.84	%	$	6,321,599		$	81,049			5.16	%
Mortgage loans		703,120			9,299			5.29			494,531			7,526			6.09
Consumer and other loans		2,187,247			28,211			5.17			1,932,346			26,667			5.54
Total loans		10,003,767			123,124			4.94			8,748,476			115,242			5.30
Loans held for sale		140,122			1,474			4.21			170,620			1,351			3.17
Investment securities (TE)		2,109,253			11,000			2.24			2,059,502			8,978			1.92
FDIC loss share receivable		131,375			(17,009	)		(51.22	)		268,700			(18,130	)		(26.69	)
Other earning assets		308,712			631			0.82			338,668			736			0.87
Total earning assets		12,693,229			119,220			3.80			11,585,966			108,177			3.80
Allowance for loan losses		(132,049	)								(183,783	)
Non-earning assets		1,480,382									1,479,368
Total assets	$	14,041,562								$	12,881,551
Interest-bearing liabilities
Deposits:
NOW accounts	$	2,229,264			1,394			0.25	%	$	2,488,721			1,983			0.32	%
Savings and money market accounts		4,372,855			2,812			0.26			4,113,671			2,705			0.26
Certificates of deposit		1,721,111			3,089			0.72			2,025,823			4,372			0.87
Total interest-bearing deposits		8,323,230			7,295			0.35			8,628,215			9,060			0.42
Short-term borrowings		907,459			373			0.16			294,789			121			0.16
Long-term debt		304,707			2,573			3.34			293,746			2,514			3.39
Total interest-bearing liabilities		9,535,396			10,241			0.43			9,216,750			11,695			0.51
Non-interest-bearing demand deposits		2,748,468									2,010,263
Non-interest-bearing liabilities		125,649									125,932
Total liabilities		12,409,513									11,352,945
Shareholders’ equity		1,632,049									1,528,606
Total liabiities and shareholders’ equity	$	14,041,562								$	12,881,551
Net earning assets	$	3,157,833								$	2,369,216
Net interest spread				$	108,979			3.38	%				$	96,482			3.29	%
Net interest income (TE) / Net interest margin (TE)				$	111,170			3.48	%				$	98,878			3.39	%

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TABLE 21 – YEAR-TO-DATE AVERAGE BALANCES, NET INTEREST INCOME AND INTEREST YIELDS / RATES

	Six Months Ended June 30,
	2014									2013
	Average			Interest			Yield/			Average			Interest			Yield/
(Dollars in thousands)	Balance			Income/Expense			Rate			Balance			Income/Expense			Rate
Earning Assets:
Loans receivable:
Commercial loans (TE)	$	7,002,639		$	171,546			4.95	%	$	6,264,012		$	169,485			5.48	%
Mortgage loans		649,495			18,062			5.56			483,383			14,985			6.20
Consumer and other loans		2,126,681			54,670			5.18			1,899,178			53,839			5.72
Total loans		9,778,815			244,278			5.04			8,646,573			238,309			5.57
Loans held for sale		118,192			2,359			3.99			174,482			2,676			3.07
Investment securities (TE)		2,111,326			21,917			2.23			2,050,935			17,838			1.92
FDIC loss share receivable		142,940			(36,273	)		(50.47	)		326,190			(45,831	)		(27.95	)
Other earning assets		241,104			1,170			0.98			507,853			1,601			0.64
Total earning assets		12,392,377			233,451			3.83			11,706,033			214,593			3.75
Allowance for loan losses		(135,866	)								(214,414	)
Non-earning assets		1,447,610									1,486,126
Total assets	$	13,704,121								$	12,977,745
Interest-bearing liabilities
Deposits:
NOW accounts	$	2,230,001			2,934			0.27	%	$	2,476,888			3,927			0.32	%
Savings and money market accounts		4,334,819			5,520			0.26			4,141,741			6,261			0.30
Certificates of deposit		1,693,679			6,026			0.72			2,078,095			9,026			0.88
Total interest-bearing deposits		8,258,499			14,480			0.35			8,696,724			19,214			0.45
Short-term borrowings		746,867			615			0.16			293,874			261			0.18
Long-term debt		292,535			4,970			3.38			352,513			5,764			3.25
Total interest-bearing liabilities		9,297,901			20,065			0.43			9,343,111			25,239			0.54
Non-interest-bearing demand deposits		2,686,118									1,974,276
Non-interest-bearing liabilities		125,361									130,528
Total liabilities		12,109,380									11,447,915
Shareholders’ equity		1,594,741									1,529,830
Total liabiities and shareholders’ equity	$	13,704,121								$	12,977,745
Net earning assets	$	3,094,476								$	2,362,922
Net interest spread				$	213,386			3.40	%				$	189,354			3.20	%
Net interest income (TE) / Net interest margin (TE)				$	217,806			3.51	%				$	194,214			3.31	%

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The following table sets forth information regarding average loan balances and average yields, segregated into the covered and non-covered portfolio, for the periods indicated. Information on the Company’s covered loan portfolio is presented both with and without the yield on the FDIC loss share receivable.

TABLE 22 - AVERAGE LOAN BALANCE AND YIELDS

	Three Months Ended June 30,										Six Months Ended June 30,
	2014					2013					2014					2013
(Dollars in thousands)	Average Balance		Average Yield			Average Balance		Average Yield			Average Balance		Average Yield			Average Balance		Average Yield
Non-covered loans (TE) (1)	$	9,379,156		4.30	%	$	7,793,921		4.40	%	$	9,120,964		4.34	%	$	7,649,796		4.42	%
Covered loans (TE) (1)		624,612		14.70			954,555		12.62			657,851		14.86		$	996,777		14.43
FDIC loss share receivables		131,375		(51.22	)		268,700		(26.69	)		142,940		(50.47	)		326,190		(27.95	)
Covered loans, net of FDIC loss share receivables		755,987		3.16			1,223,255		5.11			800,791		3.17			1,322,967		3.96
Total loans and FDIC loss share receivables	$	10,135,143		4.22	%	$	9,017,176		4.35	%	$	9,921,755		4.24	%	$	8,972,763		4.35	%

⁽¹⁾ Taxable equivalent yields are calculated using a marginal tax rate of 35%.

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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 23 - SUMMARY OF CHANGES IN NET INTEREST INCOME

	For the Three Months Ended June 30									For the Six Months Ended June 30
	2014/2013									2014/2013
	Change Attributable To									Change Attributable To
(Dollars in thousands)	Volume			Rate			Net Increase (Decrease)			Volume			Rate			Net Increase (Decrease)
Earning assets:
Loans receivable:
Commercial loans (TE)	$	9,916		$	(5,351	)	$	4,565		$	19,287		$	(17,226	)	$	2,061
Mortgage loans		2,857			(1,084	)		1,773			4,741			(1,664	)		3,077
Consumer and other loans		3,091			(1,547	)		1,544			5,291			(4,460	)		831
Loans held for sale		(269	)		392			123			(998	)		681			(317	)
Investment securities (TE)		103			1,919			2,022			283			3,796			4,079
FDIC loss share receivable		12,309			(11,188	)		1,121			34,271			(24,713	)		9,558
Other earning assets		185			(290	)		(105	)		(58	)		(373	)		(431	)
Net change in income on earning assets		28,192			(17,149	)		11,043			62,817			(43,959	)		18,858
Interest-bearing liabilities:
Deposits:
NOW accounts		(192	)		(397	)		(589	)		(367	)		(626	)		(993	)
Savings and money market accounts		316			(209	)		107			651			(1,392	)		(741	)
Certificates of deposit		(605	)		(678	)		(1,283	)		(1,517	)		(1,483	)		(3,000	)
Borrowings		359			(48	)		311			(610	)		170			(440	)
Net change in expense on interest-bearing liabilities		(122	)		(1,332	)		(1,454	)		(1,843	)		(3,331	)		(5,174	)
Change in net interest spread	$	28,314		$	(15,817	)	$	12,497		$	64,660		$	(40,628	)	$	24,032

Interest income includes income earned on interest-earning assets, as well as applicable loan fees earned. Interest income that would have been earned on non-accrual loans had they been on accrual status is not included in the data reported above.

The increase in yield on total earning assets between the first two quarters of 2014 and 2013 was driven by a shift in earning asset mix from lower-yielding earning assets, namely cash and equity securities, into higher-yielding investments, including loans and investment securities. Average loans and investment securities were 97.1% of total earning assets during the first two quarters of 2014 compared to 94.2% for the same period in 2013. Other earning assets, consisting primarily of interest-bearing cash, decreased from 4.3% of earning assets in the first six months of 2013 to 1.9% in the first two quarters of 2014.

For the six months ended June 30, 2014, average balance increases in the largest components of earning assets offset loan rate decreases. Average loan balances increased $1.0 billion, or 13.1%, over the first two quarters of 2013 and can be attributed to the non-covered loan growth over the past 12 months. Interest income growth was slowed in the current year by a decrease in the yield on the Company’s non-covered loan portfolio of eight basis points to 4.34%. Additionally, covered loan yields decreased 79 basis points from the first two quarters of 2013. As expected cash flow on the covered loan and OREO portfolios increases, the carrying value of the FDIC loss share receivable decreases, with the difference recorded as an adjustment to earnings. The total yield of the loan portfolio for the first six months of 2014 when including the loss share receivable was 4.24%, 11 basis points lower than in the same period of 2013, and partially offset the income earned from loan volume increases over the prior year.

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Interest income growth in the current year was positively impacted by a 31 basis point increase in the yield on investment securities and a $60.4 million increase in average year-to-date balance.

Interest expense decreased $1.5 million or 12.4%, from the second quarter of 2013, and $5.2 million, or 20.5%, for the six-month period of 2013. The 12.4% decrease in interest expense during the current quarter was a result of an eight basis point decrease in the rate paid on interest-bearing liabilities. For the first six months of 2014, interest expense was driven lower by an 11 basis point reduction in rate and a $45.2 million decrease in the average balance of interest-bearing liabilities.

Despite the acquired Teche, First Private, and Trust One-Memphis deposits, average interest-bearing deposits decreased $305.0 million, or 3.5%, from the average in the second quarter of 2013, and decreased $438.2 million, or 5.0%, for the year-to-date period. As a result, combined with a quarter- and year-to-date decline of seven and ten basis points, respectively, in the average rate paid on these deposits, interest expense on deposits decreased 19.5%, or $1.8 million, from the second quarter of 2013, and $4.7 million, or 24.6%, from the six-month period ending June 30, 2013. Higher-yielding time deposits across many markets either matured or were repriced during the past 12 months, driving the expense and rate decreases.

Total interest expense on the Company’s short-term and long-term borrowings also decreased from the first six months of 2013, as a $60.0 million decrease in average long-term borrowings and a two basis point decrease in the rate paid on short-term borrowings offset a 13 basis point increase in the rate paid on long-term debt.

Provision for Loan Losses

Management of the Company assesses the allowance for credit losses monthly and will make provisions for credit losses in order to maintain the appropriateness of the allowance for credit losses. Increases in the allowance for credit losses are achieved through provisions for credit losses that are charged against income. Adjustments to the allowance for credit losses may also result from credit quality changes associated with acquired loans.

On a consolidated basis, the Company recorded a provision for loan losses of $6.9 million for the six months ended June 30, 2014 (which includes a provision of $4.7 million in the second quarter of the current year), an $8.4 million increase from the provision reversal of $1.6 million recorded for the same period of 2013. The Company also recorded a provision for unfunded lending commitments of $0.1 million during the current year, which is included in “Credit and other loan related expense” in the Company’s consolidated statement of comprehensive income. As a result, the Company’s total provision for credit losses was $7.0 million in the first six months of 2014, $8.0 million above the total provision for credit losses recorded for the same period of 2013. The Company’s total provision during the first six months of 2014 included a provision for changes in expected cash flows on the acquired loan portfolios (covered and non-covered) of $1.8 million and a $5.1 million provision recorded on non-acquired loans, based primarily on loan growth. The total provision was limited in 2014 and 2013 by an improvement in legacy portfolio asset quality, as multi-year net charge-off trends in this portfolio continued to show signs of improvement.

Non-covered loans past due totaled $105.4 million at June 30, 2014, a decrease of $3.9 million from December 31, 2013. Past due loans, including non-accrual loans, were 1.02% of total loans (before acquired loan discount adjustments) at the end of the second quarter of 2014, a 23 basis point decrease from December 31, 2013. Excluding the acquired loans, loans past due were 0.55% of total loans at June 30, 2014, an improvement of 25 basis points from December 31, 2013.

Excluding loan pool closures, net charge-offs on the consolidated portfolio were $1.6 million year-to-date, for a net charge-off percentage of 0.03%, two basis points below the 0.05% in the first two quarters of 2013. The net charge-offs thus far in 2014 were a result of $5.3 million in charge-offs and $3.7 million in recoveries.

The Company believes the allowance was appropriate at June 30, 2014 and December 31, 2013 to cover probable credit losses inherent in the loan portfolio. The allowance for loan losses as a percentage of outstanding loans, net of unearned income, decreased 28 basis points from 1.51% at December 31, 2013 to 1.23% at June 30, 2014.

Excluding acquired loans, the Company’s allowance for the non-covered portfolio was 0.80% of non-covered loans at June 30, 2014 and 0.81% at December 31, 2013. On the same basis, the Company’s allowance at June 30, 2014 was 206.5% of total non-performing loans, compared to 150.4% of total non-performing loans at the end of 2013.

Non-interest Income

The Company’s operating results for the second quarter of 2014 included non-interest income of $48.0 million compared to $42.5 million for the same period of 2013. The increase in non-interest income from 2013 came from a number of non-interest revenue streams, including broker commission income, service charges, ATM/debit card fee income, and mortgage income. However, on a year-to-date basis, non-interest income decreased $3.3 million, or 3.8%, from the corresponding 2013 period, due mainly to decreases in mortgage income, gain on sale of investments, and title revenue, although those decreases were partially offset by increases in broker commission income, income from bank-owned life insurance and service charges.

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Non-interest income growth has been a management focus in response to a challenging interest rate environment. As a result, the Company has continued to increase its investments in wealth management, trust, and brokerage businesses in order to increase non-interest income. Non-interest income as a percentage of total gross revenue (defined as total interest income and non-interest income) in the second quarter of 2014 was 28.7% compared to 28.2% of total gross revenue in the prior year. Excluding mortgage income, other non-interest income for the three months ended June 30, 2014 increased to 17.9% of total gross revenue from 16.4% for the same period of 2013.

The following table illustrates the primary components of non-interest income for the periods indicated.

TABLE - 24 NON-INTEREST INCOME

	Three Months Ended June 30,					Percent Increase			Six Months Ended June 30,				Percent Increase
(Dollars in thousands)	2014		2013			(Decrease)			2014		2013		(Decrease)
Service charges on deposit accounts	$	8,203	$	7,106			15.4	%	$	15,216	$	13,903		9.4	%
Mortgage income		17,957		17,708			1.4			28,089		36,639		(23.3	)
Title revenue		5,262		5,696			(7.6	)		9,429		10,717		(12.0	)
ATM/debit card fee income		2,937		2,357			24.6			5,404		4,541		19.0
Income from bank-owned life insurance		935		901			3.8			3,376		1,840		83.5
Gain on sale of investments, net (1)		8		(57	)		114.7			27		2,301		(98.8	)
Broker commission income		5,479		3,863			41.8			9,526		7,397		28.8
Gain on sale of assets		10		2			395.1			16		49		(67.0	)
Trust income		1,520		1,400			8.5			2,950		2,640		11.7
Credit card income		1,993		1,490			33.8			3,612		2,804		28.8
Other income		3,659		2,023			80.9			5,999		4,149		44.6
Total non-interest income	$	47,963	$	42,489			12.9	%	$	83,644	$	86,980		(3.8	)%

(1) Net gains on sale of investments include gains on calls of held to maturity securities of $9,000 for the three months ended June 30, 2013 and $ 40,000 for the six months ended June 30, 2013.

Service charges on deposit accounts increased $1.1 million in the second quarter and $1.3 million for the first six months of 2014 over the same periods of 2013 due primarily to an increase in service charge fees and NSF charges. Customers increased as a result of the Teche, First Private, and Trust One-Memphis acquisitions, as well as new branch openings over the past 12 months.

In the first six months of 2014, IMC sales volume decreased $607.4 million, or 46.3%, compared to the same period of 2013 and resulted in an $8.6 million decrease in mortgage income from the six months ended June 30, 2013. The decrease in sales volume from the first six months of 2013 was partially offset by higher margin on sales.

Title income decreased $0.4 million from the second quarter of 2013 and $1.3 million on a year-to-date basis when compared to the same periods of 2013 as a result of slower activity fueled by rising mortgage interest rates.

ATM/debit card fee income increased $0.6 million in the second quarter of 2014 and $0.9 million from the first half of 2013, primarily due to an increase in interchange fee income from increases in transaction volume from an expanded cardholder base and usage by customers.

On July 31, 2013, the U.S. District Court for the District of Columbia issued a ruling in NACS v. Board of Governors of the Federal Reserve System, vacating the Federal Reserve’s Final Rule on Debit Card and Interchange Fees and Routing (the “Interchange Fee Rule”). Retail merchants and merchant groups challenged the Interchange Fee Rule, which had allowed debit card issuers to recover from merchants an interchange fee of $.21 per transaction, a fee of five basis points of the value of the transaction and an additional $0.01 fraud prevention adjustment. The district court held that this fee structure, and the Interchange Fee Rule’s requirements regarding the number of networks over which each debit card transaction can be processed, did not comply with the Durbin Amendment to the

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Dodd-Frank Act. The Federal Reserve appealed. On March 21, 2014, the Court of Appeals for the D.C. Circuit issued its opinion overturning the district court’s decision and largely reinstating the Interchange Fee Rule. The ultimate financial impact on the Company cannot be determined at this time and the Company continues to monitor this litigation.

Income from bank owned life insurance for the second quarter of 2014 remained relatively flat compared to the same quarter of 2013, consistent with market performance and current yields. On a year-to-date basis, income from bank owned life insurance policies increased $1.5 million compared to the first half of 2013, a result of $1.5 million in non-operating income from two policies that paid death benefits during the first quarter of 2014. Excluding $15.5 million in acquired policies, there have been no significant investments in bank owned life insurance over the past 12 months.

There were minimal gains recorded on investment security sales in the second quarters of 2014 and 2013. On a year-to-date basis, security gains decreased $2.3 million primarily due to changes in sales volume. Gains were recorded on the sale of $14.0 million and $44.7 million in available-for-sale securities for the first two quarters of 2014 and 2013, respectively, and the call of $3.2 million of held-to-maturity investments in the first two quarters of 2014, compared to the sale or call of $52.1 million in securities during the first six months of 2013.

The Company’s wealth management subsidiaries had successful revenue growth during the second quarter and first six months of 2014, as total broker commissions increased $1.6 million and $2.1 million, respectively, compared to the same periods of 2013, a result of the Company’s expanded client base and service offering. The Company’s other wealth management income, which includes research income, syndicate deals, and investment banking management and underwriting fees, increased $0.8 million, or 31.9%, from the first six months of 2013, while sales and trade commissions increased $1.3 million, or 27.2%.

The Company’s trust and credit card income were both positively impacted by the Company’s increased customer base and growth of the businesses over 2013. Trust income increased $0.1 million for the second quarter and $0.3 million for the first two quarters of 2014, while credit card income increased $0.5 million and $0.8 million over the same periods.

Other non-interest income increased $1.6 million and $1.9 million for the second quarter and first six months ended June 30, 2014, respectively, when compared to the corresponding periods of 2013. The primary driver of the increase was higher commission income earned on the Company’s customer derivatives. Total commission income increased $0.8 million for the second quarter and $1.1 million for the first half of 2014 over the corresponding 2013 periods.

Non-interest Expense

The Company’s results for the first six months of 2014 included non-interest expenses of $234.8 million, $27.5 million lower than non-interest expenses of $262.3 million for the first six months of 2013. Ongoing attention to expense control is part of the Company’s corporate culture. However, the Company’s continued focus on growth through new branches, acquisitions, product expansion, and operational investments have caused related increases in several components of non-interest expense. The Company currently operates 278 combined offices, consistent with the number of offices at June 30, 2013 after adjusting for closed or consolidated branches and offices.

Compared to the first two quarters of 2013, the most significant drivers of the decrease in non-interest expense were the $31.8 million impairment of the Company’s indemnification assets in 2013, $31.0 million below the impairment recorded thus far in 2014, and the $2.3 million prepayment penalty recorded in the first quarter of 2013 to repay $90.0 million in long-term FHLB advances acquired in prior periods. Excluding these and other non-operating expenses, such as lease terminations, severance, and merger-related expenses, non-interest expense decreased $4.3 million, or 2.0%, for the six months ended June 30, 2014. For the second quarter of 2014, non-interest expenses totaled $127.4 million, a $10.0 million increase from the second quarter of 2013. Merger-related expenses of $10.4 million in the second quarter of 2014 account for the increase from the second quarter of 2013. For the second quarter of 2014, the Company’s efficiency ratio was 81.2%, but excluding non-operating income and expenses, the Company’s operating efficiency ratio would have been 70.2%, a decrease from 79.2% in the second quarter of 2013. On a year-to-date basis, the Company’s operating efficiency ratio would have been 72.2% excluding non-operating income and expenses, compared to 79.0% on a GAAP basis.

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The following table illustrates the primary components of non-interest expense for the periods indicated.

TABLE 25 - NON-INTEREST EXPENSE

					Percent							Percent
	Three Months Ended June 30,				Increase			Six Months Ended June 30,				Increase
(Dollars in thousands)	2014		2013		(Decrease)			2014		2013		(Decrease)
Salaries and employee benefits	$	68,846	$	63,815		7.9	%	$	128,707		126,344		1.9	%
Net occupancy and equipment		16,104		14,283		12.7			30,094		29,478		2.1
Franchise and shares tax		1,147		855		34.1			2,097		2,076		1.0
Communication and delivery		3,464		3,116		11.1			6,231		6,387		(2.5	)
Marketing and business development		3,412		3,049		11.9			6,262		6,136		2.1
Data processing		10,121		4,264		137.3			15,503		8,256		87.8
Office supplies and printing		636		666		(4.5	)		1,139		1,423		(20.0	)
Amortization of acquisition intangibles		1,244		1,181		5.3			2,461		2,364		4.1
Professional services		5,560		5,101		9.0			9,308		9,519		(2.2	)
Costs of OREO, net		497		367		35.5			1,657		1,339		23.8
Credit and other loan related expense		3,093		4,135		(25.2	)		6,639		7,858		(15.5	)
Insurance		3,255		2,782		17.0			6,672		5,283		26.3
Travel and entertainment		2,126		2,019		5.3			4,456		4,287		3.9
Impairment of long-lived assets		1,109		4,618		(76.0	)		1,441		36,431		(95.8	)
Prepayment penalty on FHLB debt		—		—		—			—		2,307		(100.0	)
Other expenses		6,761		7,110		(4.9	)		12,135		12,771		(5.0	)
Total non-interest expense	$	127,375	$	117,361		8.5	%	$	234,802	$	262,259		(10.5	)%

Salaries and employee benefits increased $5.0 million and $2.4 million, respectively, in the second quarter and first six months of 2014 when compared to the same 2013 periods, primarily the result of an increase in headcount (a function of the addition of Teche employees) and higher incentives and commissions earned in the current period. The Company had 2,760 full-time equivalent employees at the end of the second quarter of 2014 compared to 2,611 at June 30, 2013. The Company’s results for the three-month and six-month periods ended June 30, 2014 include one month of salaries and employee benefits from Teche employees acquired in the second quarter of 2014.

For the second quarter of 2014, total salaries and other employee compensation increased $1.0 million, or 2.4%, from the same period of 2013, while payroll taxes, medical and hospitalization expenses, and other employee benefits decreased $0.6 million, or 8.4%. On a year-to-date basis, total salaries and other employee compensation increased $4.0 million, or 3.6%, while total employee benefits decreased $1.4 million, or 7.5%. The increase in compensation is a result of an increase in headcount, as total full-time equivalent employees increased 5.7% from the end of the second quarter of 2013.

Salaries and employee benefits also include commissions and other incentives earned based on revenue production, much of which is tied to mortgage origination volume. In the first two quarters of 2014, mortgage commissions and incentives were $2.2 million, or 11.0%, below those in the first six months of 2013, which is consistent with the general decrease in mortgage production between the periods. Total employee compensation in the current year, however, included $1.8 million of additional share-based incentive compensation due to additional restricted stock, phantom stock, and option grants over the past 12 months. The increase in share-based compensation was also a result of the increase in share price over the past 6 months, as the $6.34 share price change from the end of 2013 increased the value of outstanding phantom stock awards. Employee compensation also includes severance and retention payments, which increased $3.7 million in both the second quarter and first half of 2014 due to the acquisitions completed during the first six months of 2014.

Net occupancy and equipment expenses were up $1.8 million and $0.6 million, respectively, from the second quarter and first six months of 2013, primarily due to $2.6 million in write-downs and accelerated depreciation recorded on closed branches during the second quarter of 2014. Offsetting these non-operating expenses were reductions in depreciation expense for the quarter-to-date and year-to-date

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periods of $0.2 million and $0.7 million, respectively, as a result of these closed branches. Occupancy and equipment expenses also include repairs and maintenance on branches, utilities, rentals and property taxes. Repairs and maintenance expenses decreased $0.4 million in the current quarter and $0.9 million on a year-to-date basis, while property taxes were down 4.1% compared to the first six months of 2013.

Despite the growth of the Company over the past 12 months, professional services expense thus far in 2014 was $0.2 million lower than in the first two quarters of 2013. The continued expansion of the size and breadth of the Company’s operations has typically required additional expenditures for legal services, consulting engagements, exam and supervisory review, and audit services. However, in the current year, consulting expenses decreased $2.0 million as the Company engaged consultants in 2013 to address risk mitigation and improve the operational efficiency of the Company. The Company’s efforts to improve various Company and business-line specific processes accounted for most of the consulting expenses in the first two quarter of 2013. The Company has seen the benefits of these improvements in 2014 and expects to see additional improvements in future periods. In addition, examination and audit expenses were $0.6 million below the first two quarters of 2013. Partially offsetting lower consulting and examination expenses was a $2.1 million increase in merger-related professional expenses, as the Company incurred legal, audit, and consulting expenses from the Trust One-Memphis, Teche, and First Private acquisitions.

For the six months ended June 30, 2014, net costs of OREO properties increased $0.3 million from the corresponding 2013 period, a result of $1.7 million in lower gains on sales of these properties. Offsetting these lower gains on sales were decreases in write-downs taken on OREO properties of $1.2 million, or 29.7%. With a lower average OREO balance during 2014, property taxes paid on OREO decreased $0.2 million, or 26.6%. In addition, legal, appraisal, and other OREO expenses decreased $0.2 million, or 37.7%, from the first six months of 2013.

Credit and loan related expenses decreased $1.0 million and $1.2 million between the second quarter and first six months of 2013, respectively, as a result of the general improvement in asset quality between periods. Credit and loan related expenses include the provision recorded on the Company’s unfunded lending commitments of $0.1 million thus far in 2014 and $0.5 million for the first six months of 2013. Excluding this provision, credit and loan-related expenses would have decreased $0.8 million, or 11.1%, on a year-to-date basis, and $0.3 million, or 7.4%, on a quarter-to-date basis. Total expenses incurred for underwriting, certification, and collections have decreased as the number of problem credits has decreased.

Insurance expenses increased $1.4 million when compared to both periods of 2013, primarily as a result of higher deposit insurance in the current period. The increase in deposit insurance was a result of an increase in the assessment base used by the FDIC to calculate deposit insurance, and not the result of a significant change in assessment rate based on a change in bank soundness. The increase in assessment base stems primarily from a change in the Company’s mix of assets and liabilities, namely an increase in outstanding short-term FHLB advances, and not as a result of a significant decrease in asset quality. As the Company’s deposit base grew 4.1% on average, the Company’s assessment of deposit insurance from the FDIC increased. Despite the increased Company footprint, property, casualty, and other non-deposit insurance expenses have increased less than $0.1 million, or 7.1%, from 2013.

Excluding merger-related travel expenses of $0.2 million for the second quarter of 2014 and $0.3 million for the first six months of 2014, there was no significant change in travel and entertainment expenses compared to the second quarter and first six months of 2013, as the Company continues to leverage technology to limit the amount of business travel required to conduct its business, despite the expansion of its branch network, number of locations, and general increases in mileage, lodging, and flight costs.

Other non-interest expenses thus far in 2014 were down $0.6 million from the first six months of 2013, primarily the result of a decrease in expenses from the Company’s investments in new market tax credits, as passive losses decreased $1.3 million during the current year. Offsetting the decrease were increases in fees charged to the Company’s wealth management business, deposit and other losses, and mortgage loan repurchase charges.

Income Taxes

For the six months ended June 30, 2014, the Company recorded income tax expense of $14.4 million and an income tax benefit of $0.7 million for the six months ended June 30, 2013, which resulted in an effective income tax rate of 26.1% in the first two quarters of 2014 and 4.2% for the same period of 2013. Ordinarily, the difference between the effective tax rate and the statutory federal and state tax rates primarily relates to variances in items that are non-taxable or non-deductible, which for the Company primarily includes the effect of tax-exempt income, the non-deductibility of a portion of the amortization recorded on acquisition intangibles, and various tax credits. For the first two quarters of 2013, the Company’s income tax rate was positively affected by the impairment of the FDIC loss share receivable and the prepayment penalty recorded on the repayment of FHLB debt, discussed further in the “Executive Overview” section. As a result of these charges, the Company’s annualized income before taxes, and by extension its taxable income, was lower than in the first two quarters of 2014. The full benefit of these discrete items, $13.8 million, was the primary driver of the lower effective income tax rate recorded in the first two quarters of 2013 and partially offset the income tax expense recorded on the Company’s pre-tax income at its annualized effective tax rate excluding these charges. IBERIABANK’s effective federal tax rate excluding these charges was 26.2% for the first two quarters of 2014, compared to 29.9% for the same period of 2013. On a consolidated basis, the effective tax rate excluding these charges was 26.3% in the first two quarters of 2014 and 23.9% in the same period of 2013.

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The consolidated effective tax rate in 2014 has also decreased when compared to 2013. The difference in the effective tax rates for the periods is primarily the result of the relative tax-exempt interest income levels during the respective periods for each of the Company’s subsidiaries. The tax rate for the current year is higher than in 2013 as a result higher taxable income, which reduces the effect the Company’s tax-exempt income has on its income tax provision.

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 needs. Certificates of deposit scheduled to mature in one year or less at June 30, 2014 totaled $1.6 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 security portfolio is classified as available-for-sale, which provides the ability to liquidate unencumbered securities as needed. Of the $2.1 billion in the investment securities portfolio, $657.5 million is unencumbered and $1.5 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 security portfolio, the Company has historically experienced significant cash inflows on a regular basis, which are highly dependent on prepayment speeds and could change materially.

Scheduled cash flows from the amortization and maturities of loans and securities are relatively predictable sources of funds. Conversely, deposit flows, prepayments of loan and investment 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 June 30, 2014, the Company had $915.6 million of outstanding FHLB advances, $738.0 million of which was short-term and $177.6 million was long-term. The Company had $1.9 billion in additional FHLB advances available at June 30, 2014. At June 30, 2014, IBERIABANK also had a $25.0 million one-year line of credit available with an unaffiliated bank. The Company and IBERIABANK also have various funding arrangements with commercial banks providing up to $130.0 million in the form of fed funds and other lines of credit. At June 30, 2014, 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 June 30, 2014 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.

Net cash inflows totaled $277.2 million during the first six months of 2014, an increase of $900.6 million from net cash outflows of $623.4 million during the six months ended June 30, 2013. The increase in cash was a result of cash acquired in the three acquisitions in 2014, offset in part by actions by management to deploy excess liquidity and invest in higher yielding earnings assets and manage its balance sheet in an effort to maximize shareholder return.

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The following table summarizes the Company’s cash flows for the periods indicated.

TABLE 26 - CASH FLOW ACTIVITY BY TYPE

	Six Months Ended June 30,
(Dollars in thousands)	2014			2013
Cash flow (used in) provided by operations	$	(15,960	)	$	163,445
Cash flow used in investing activities		(87,564	)		(510,693	)
Cash flow provided by (used in) financing activities		380,698			(276,164	)
Net increase (decrease) in cash and cash equivalents	$	277,174		$	(623,412	)

The Company used $16.0 million in cash for the six months ended June 30, 2014 to fund operations, which was $179.4 million more than operating cash provided of $163.4 million the same period of 2013. Operating cash flow in the current year was negatively impacted by a $163.1 million decrease in the net proceeds received from activity related to mortgage loans held for sale, but was positively impacted by an increase in net income.

Cash flow from investing activities increased $423.1 million thus far in 2014 compared to the first two quarters of 2013, primarily driven by a $199.9 million increase in net cash flow from investment security activity as a result of fewer security purchases in the current year. Investing cash activity was also positively impacted in the current year by $188.8 million in net cash received from the Trust One-Memphis, Teche, and First Private acquisitions. Cash used to fund loan growth decreased $120.9 million, which also had a positive impact on cash flow, but investing cash activity in 2014 was negatively affected by a decrease of $48.3 million in reimbursements from the FDIC.

Net cash provided by financing activities of $380.7 million thus far in 2014 was $656.9 million more than the same six-month period of 2013, primarily due to $299.3 million in net cash provided from additional short-term borrowings and a $134.6 million decrease in cash used to repay long-term debt. In addition, an increase in customer deposits of $101.2 million (net of deposits acquired) in the first two quarters of 2014 was $207.4 million more than deposit runoff for the same six-month period of 2013. The Company also saw an increase in cash flow from stock options exercised, which contributed to the overall improvement in cash from financing activities.

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, commitments under operating leases, and long-term debt. The Company provides customers with off-balance sheet credit support through loan commitments, lines of credit, and standby letters of credit. Many of the unused commitments are expected to expire unused or be only partially used; therefore, the total amount of unused 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. At June 30, 2014, the Company’s approved loan commitments outstanding totaled $334.2 million. At the same date, commitments under unused lines of credit, including credit card lines, amounted to $3.6 billion.

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 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 Senior Management Planning Committee. The Senior Management Planning Committee normally meets monthly to review, 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 Senior Management Planning Committee generally reviews the Company’s liquidity, cash flow needs, maturities 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 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.

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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 that has traditionally been more realistic.

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The Company’s interest rate risk model indicated that the Company was asset sensitive in terms of interest rate sensitivity. Based on the Company’s interest rate risk model at June 30, 2014, the table below illustrates the impact of an immediate and sustained 100 and 200 basis point increase or decrease in interest rates on net interest income.

TABLE 27 - CHANGE IN NET INTEREST INCOME FROM INTEREST RATE CHANGES

Shift in Interest Rates (in bps)	% Change in Projected Net Interest Income
+ 200		9.1	%
+ 100		4.5	%
- 100		(2.2	)%
- 200		(4.8	)%

The influence of using the forward curve as of June 30, 2014 as a basis for projecting the interest rate environment would approximate a 0.9% increase in net interest income. The computations of interest rate risk shown above do not necessarily include certain actions that management may undertake to manage this risk in response to anticipated changes in interest rates and other factors.

The 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. 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 FRB purchases and sales and also expectations of monetary policy going forward. In response to growing concerns about the banking industry and customer liquidity, the federal funds rate decreased seven times to a new all-time low of 0.25% at the end of 2008. The federal funds rate has remained at 0.25% throughout 2013 and will remain at that rate through at least late 2014. The Company’s commercial loan portfolio is also impacted by fluctuations in the level of the London Interbank Borrowing Offered Rate (LIBOR), as a large portion of this portfolio reprices based on this index. The decrease in the federal funds, LIBOR, and U.S. Treasury rates have resulted in compressed net interest margin for the Company, as assets have repriced more quickly than the Company’s liabilities. Although management believes that the Company is not significantly affected by changes in interest rates over an extended period of time, any continued flattening of the yield curve will exert downward pressure on the net interest margin and net interest income. The table below presents the Company’s anticipated repricing of loans and investment securities over the next four quarters.

TABLE 28 - REPRICING OF CERTAIN EARNING ASSETS

(Dollars in thousands)	3Q 2014		4Q 2014		1Q 2015		2Q 2015		Total less than one year
Investment securities	$	89,808	$	63,497	$	57,757	$	72,205	$	283,267
Covered loans		241,310		69,634		66,928		64,475		442,347
Non-covered loans:
Fixed rate loans		344,273		314,645		278,870		283,740		1,221,528
Variable rate loans		4,434,354		26,689		19,216		21,172		4,501,431
Total non-covered loans		4,778,627		341,334		298,086		304,912		5,722,959
Total loans		5,019,937		410,968		365,014		369,387		6,165,306
	$	5,109,745	$	474,465	$	422,771	$	441,592	$	6,448,573

Note: Amounts exclude the repricing of assets and liabilities from prior periods, as well as nonaccrual loans and market value adjustments.

As part of its asset/liability management strategy, the Company has emphasized the origination of commercial and consumer loans, which typically have shorter terms than residential mortgage loans and/or adjustable or variable rates of interest. The majority of fixed-rate, long-term residential loans are sold in the secondary market to avoid assumption of the interest rate risk associated with longer duration assets in the current low rate environment. As of June 30, 2014, $5.3 billion, or 48.5%, of the Company’s total loan portfolio had adjustable interest rates. IBERIABANK had no significant concentration to any single borrower or industry segment at June 30, 2014.

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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 the end of the second quarter of 2014, 83.2% of the Company’s deposits were in transaction and limited-transaction accounts, compared to 84.1% at December 31, 2013. Non-interest-bearing transaction accounts were 25.4% of total deposits at June 30, 2014, compared to 24.0% of total deposits at December 31, 2013.

Much of the liquidity increase experienced in the past several years has been due to a significant increase in non-interest-bearing demand deposits. 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.

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

TABLE 29 – REPRICING OF LIABILITIES

(Dollars in thousands)	3Q 2014		4Q 2014		1Q 2015		2Q 2015		Total less than one year
Time deposits	$	686,395		344,892		265,603		281,769	$	1,578,659
Short-term borrowings		584,741		195,000		130,000		125,000		1,034,741
Long-term debt		142,144		2,058		2,055		10,035		156,292
	$	1,413,280	$	541,950	$	397,658	$	416,804	$	2,769,692

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 interest rate swaps to effectively manage interest rate risk. The interest rate swaps of the Company were executed to modify net interest sensitivity to levels deemed appropriate.

IMPACT OF INFLATION AND CHANGING PRICES

The consolidated financial statements and related financial data presented herein have been prepared in accordance with generally accepted accounting principles, 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 2014.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk

Quantitative and qualitative disclosures about market risk are presented at December 31, 2013 in Part II, Item 7A of the Company’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 28, 2014. Additional information at June 30, 2014 is included herein under 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 June 30, 2014 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.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

See Note 16 – Commitments and Contingencies of Notes to the Unaudited Consolidated Financial Statements which is incorporated herein by reference.

Item 1A. Risk Factors

There have been no material changes in risk factors disclosed by the Company in its Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 28, 2014.

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

Not Applicable.

Item 3. Defaults Upon Senior Securities

Not Applicable.

Item 4. Mine Safety Disclosures

Not Applicable.

Item 5. Other Information

None.

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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 Financial 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.

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SIGNATURES

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

	IBERIABANK Corporation
Date: August 8, 2014	By:	/s/ Daryl G. Byrd
	Daryl G. Byrd
	President and Chief Executive Officer
Date: August 8, 2014	By:	/s/ Anthony J. Restel
	Anthony J. Restel
	Senior Executive Vice President and Chief Financial Officer

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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: August 8, 2014	/s/ Daryl G. Byrd
	Daryl G. Byrd
	President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

SECTION 302 CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Anthony J. Restel, Senior Executive Vice President 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: August 8, 2014	/s/ Anthony J. Restel
	Anthony J. Restel
	Senior Executive Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of IBERIABANK Corporation (the “Company”) on Form 10-Q for the period ended June 30, 2014 (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.

  /s/ Daryl G. Byrd

Daryl G. Byrd

President and Chief Executive Officer

August 8, 2014

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 June 30, 2014 (the “Report”), I, Anthony J. Restel, Senior Executive Vice President 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.

  /s/ Anthony J. Restel

Anthony J. Restel

Senior Executive Vice President and Chief Financial Officer

August 8, 2014

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

Capital Requirements and Other Regulatory Matters (Tables)

6 Months Ended

Jun. 30, 2014

Banking And Thrift [Abstract]

Actual Capital Amounts and Ratios

 The Company’s and IBERIABANK’s actual capital amounts and ratios as of June 30, 2014 and December 31, 2013 are presented in the following table.

	June 30, 2014
	Minimum					Well Capitalized					Actual
(Dollars in thousands)	Amount		Ratio			Amount		Ratio			Amount		Ratio
Tier 1 Leverage
Consolidated	$	539,674		4.00	%	$	N/A		N/A	%	$	1,353,676		10.03	%
IBERIABANK		537,718		4.00			672,147		5.00			1,196,630		8.90
Tier 1 risk-based capital
Consolidated	$	481,972		4.00	%	$	N/A		N/A	%	$	1,353,676		11.23	%
IBERIABANK		480,157		4.00			720,236		6.00			1,196,630		9.97
Total risk-based capital
Consolidated	$	963,943		8.00	%	$	N/A		N/A	%	$	1,498,467		12.44	%
IBERIABANK		960,315		8.00			1,200,393		10.00			1,341,421		11.17
	December 31, 2013
	Minimum					Well Capitalized					Actual
	Amount		Ratio			Amount		Ratio			Amount		Ratio
Tier 1 Leverage
Consolidated	$	507,760		4.00	%	$	N/A		N/A	%	$	1,231,886		9.70	%
IBERIABANK		505,723		4.00			632,154		5.00			1,069,783		8.46
Tier 1 risk-based capital
Consolidated	$	426,002		4.00	%	$	N/A		N/A	%	$	1,231,886		11.57	%
IBERIABANK		424,578		4.00			636,868		6.00			1,069,783		10.08
Total risk-based capital
Consolidated	$	852,005		8.00	%	$	N/A		N/A	%	$	1,365,280		12.82	%
IBERIABANK		849,157		8.00			1,061,446		10.00			1,202,738		11.33

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Acquisition Activity - Schedule of Business Acquisitions, by Acquisition (Parenthetical) (Detail) (Teche [Member])	6 Months Ended
	Jun. 30, 2014
Teche [Member]
Business Acquisition [Line Items]
Estimated amortized period for fair value adjustment	85 months

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Earnings Per Share - Schedule of Calculation of Basic and Diluted Earnings Per Share (Parenthetical) (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Weighted average basic shares outstanding, unvested restricted stock	527,605	567,162	535,442	565,860

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Loans Receivable - Summary of Changes in Accretable Yields of Acquired Loans (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 354,892	$ 356,393
Acquisition	9,778
Transfers from nonaccretable difference to accretable yield	17,645	38,407
Accretion	(54,518)	(92,200)
Changes in expected cash flows not affecting nonaccretable differences	544	74,879
Balance at end of period	328,341	377,479
Acquired Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	78,349	76,623
Acquisition	8,242
Transfers from nonaccretable difference to accretable yield	4,128	6,368
Accretion	(4,089)	(10,973)
Changes in expected cash flows not affecting nonaccretable differences	(12,176)	4,158
Balance at end of period	74,454	76,176
Acquired Performing Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	276,543	279,770
Acquisition	1,536
Transfers from nonaccretable difference to accretable yield	13,517	32,039
Accretion	(50,429)	(81,227)
Changes in expected cash flows not affecting nonaccretable differences	12,720	70,721
Balance at end of period	$ 253,887	$ 301,303

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Acquisition Activity - Schedule of Assets Acquired under Business Acquisitions (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Title Company LLC [Member]
Business Acquisition [Line Items]
Non-compete agreement	$ 63
Title plant	14
Other intangible assets	75
Other assets	2
Total Assets	154
Louisiana Abstract and Title, LLC [Member]
Business Acquisition [Line Items]
Non-compete agreement	100
Title plant	9
Other intangible assets	130
Other assets	6
Total Assets	$ 245

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Loss Sharing Agreements and FDIC Loss Share Receivable - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Mar. 31, 2013	Jun. 30, 2014 Business	Jun. 30, 2013	Dec. 31, 2013
Receivables [Abstract]
Percentage of covered loan and foreclosed real estate losses			80.00%
Losses that exceed contractual thresholds	95.00%		95.00%
Number of acquisitions			4
Recovery period for covered assets			3 years
Liability for reserve for amount of consideration	$ 800,000		$ 800,000		$ 800,000
FDIC loss share receivables	120,500,000		120,500,000
Valuation allowance against indemnification assets	$ 800,000	$ 31,800,000	$ (804,000)	$ (31,813,000)

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Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014 Branch	Jun. 30, 2013 Branch	Jun. 30, 2014 Branch	Jun. 30, 2013	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total mortgage income in the consolidated statement of comprehensive income	$ 3,600,000	$ 0	$ 5,600,000	$ 0
Impaired non-covered loans with an outstanding balance	2,200,000		2,200,000		4,100,000
Reserve in allowance for credit losses	200,000		200,000		1,000,000
Company announced plans to close branches		10
Number of branches closed	9		9
Book value of company owned branches after impairment losses	3,900,000		3,900,000		5,100,000
Available-for-sale Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value assets transferred from Level 1 to Level 2	15,100,000		15,100,000
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities	$ 0		$ 0		$ 0

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Recent Accounting Pronouncements - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014
Equity Method Investments And Joint Ventures [Abstract]
Income tax examination description	The Company receives tax credits and/or tax deductions from operating losses, which are allowable on the Company's filed income tax returns over a 10-year period, subject to recapture over a 15-year period beginning with the first year the tax credits are earned.

XML

Loss Sharing Agreements and FDIC Loss Share Receivable (Tables)

6 Months Ended

Jun. 30, 2014

Text Block [Abstract]

Schedule of FDIC Loss Share Receivables

The following is a summary of FDIC loss share receivables year-to-date activity:

	Six Months Ended June 30
(Dollars in thousands)	2014			2013
Balance at beginning of period	$	162,312		$	423,069
Change due to (reversal of) loan loss provision recorded on FDIC covered loans		(3,598	)		(55,085	)
Amortization		(36,273	)		(45,831	)
Submission of reimbursable losses to (recoveries payable to) the FDIC		2,215			(42,043	)
Impairment		(804	)		(31,813	)
Changes due to a change in cash flow assumptions on OREO and other changes		(3,320	)		(7,257	)
Balance at end of period	$	120,532		$	241,040

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Loss Sharing Agreements and FDIC Loss Share Receivable - Schedule of FDIC Loss Share Receivables (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2014	Jun. 30, 2013
FDIC Loss Share Receivable [Line Items]
Balance at beginning of period				$ 162,312
Change due to (reversal of) loan loss provision recorded on FDIC covered loans				(3,598)	(55,085)
Amortization	(17,009)	(18,130)		(36,273)	(45,831)
Impairment	(800)		(31,800)	804	31,813
Balance at end of period	120,532			120,532
FDIC Loss Share Receivables [Member]
FDIC Loss Share Receivable [Line Items]
Balance at beginning of period			423,069	162,312	423,069
Change due to (reversal of) loan loss provision recorded on FDIC covered loans				(3,598)	(55,085)
Amortization				(36,273)	(45,831)
Submission of reimbursable losses to (recoveries payable to) the FDIC				2,215	(42,043)
Impairment				(804)	(31,813)
Changes due to a change in cash flow assumptions on OREO and other changes				(3,320)	(7,257)
Balance at end of period	$ 120,532	$ 241,040		$ 120,532	$ 241,040

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Loans Receivable - Schedule of Subsequently Defaulted TDRs (Detail) (TDRs Occurring During The Period [Member], Non-Covered TDRs [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014 SecurityLoan	Jun. 30, 2013 SecurityLoan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans		1
Pre-modification Outstanding Recorded Investment		$ 1,545
Post-modification Outstanding Recorded Investment		1,545
Number of Loans	44	58
Recorded Investment	3,790	10,139
Real Estate [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans		1
Pre-modification Outstanding Recorded Investment		1,545
Post-modification Outstanding Recorded Investment		1,545
Number of Loans	31	48
Recorded Investment	1,635	8,673
Business [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans
Pre-modification Outstanding Recorded Investment
Post-modification Outstanding Recorded Investment
Number of Loans	11	8
Recorded Investment	2,115	1,417
Residential Prime [Member] | Residential Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans
Pre-modification Outstanding Recorded Investment
Post-modification Outstanding Recorded Investment
Number of Loans
Recorded Investment
Home Equity [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans
Pre-modification Outstanding Recorded Investment
Post-modification Outstanding Recorded Investment
Number of Loans	1	1
Recorded Investment	40	49
Indirect Automobile [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans
Pre-modification Outstanding Recorded Investment
Post-modification Outstanding Recorded Investment
Number of Loans
Recorded Investment
Credit Card [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans
Pre-modification Outstanding Recorded Investment
Post-modification Outstanding Recorded Investment
Number of Loans
Recorded Investment
Consumer - Other [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans
Pre-modification Outstanding Recorded Investment
Post-modification Outstanding Recorded Investment
Number of Loans	1	1
Recorded Investment

XML

Derivative Instruments and Other Hedging Activities - Effect of Hedging Instruments on Consolidated Financial Statements (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		32		(392)
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
Amount of Gain (Loss) Recognized in Income on Derivatives				209
Not Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	(37)	3,976	(671)	2,366
Not Designated as Hedging Instruments [Member] | Interest Rate Contracts [Member] | Other Income (Expense) [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	1,027	471	1,565	688
Not Designated as Hedging Instruments [Member] | Forward Sales Contracts [Member] | Mortgage Income [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	(859)	8,320	(3,864)	5,408
Not Designated as Hedging Instruments [Member] | Written and Purchased Options [Member] | Mortgage Income [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	(205)	(4,815)	1,628	(3,730)
Cash Flow Hedging [Member] | Interest Rate Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		32		(392)
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)

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Investment Securities - Schedule of Amortized Cost and Fair Values of Investment Securities, with Gross Unrealized Gains and Losses (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Schedule of Securities Available-for-sale And Held To Maturity [Line Items]
Securities available for sale, Amortized Cost	$ 2,002,362	$ 1,963,046
Securities available for sale, Gross Unrealized Gains	22,129	13,867
Securities available for sale, Gross Unrealized Losses	(15,538)	(40,116)
Securities available for sale, Estimated Fair Value	2,008,953	1,936,797
Securities held to maturity, Amortized Cost	132,245	154,109
Securities held to maturity, Gross Unrealized Gains	3,279	2,205
Securities held to maturity, Gross Unrealized Losses	(1,461)	(3,748)
Securities held to maturity, Estimated Fair Value	134,063	152,566
U.S. Government-Sponsored Enterprise Obligations [Member]
Schedule of Securities Available-for-sale And Held To Maturity [Line Items]
Securities available for sale, Amortized Cost	371,703	406,092
Securities available for sale, Gross Unrealized Gains	1,702	1,382
Securities available for sale, Gross Unrealized Losses	(6,011)	(11,913)
Securities available for sale, Estimated Fair Value	367,394	395,561
Securities held to maturity, Amortized Cost	17,499	34,478
Securities held to maturity, Gross Unrealized Gains	214	484
Securities held to maturity, Gross Unrealized Losses
Securities held to maturity, Estimated Fair Value	17,713	34,962
Obligations of State and Political Obligations [Member]
Schedule of Securities Available-for-sale And Held To Maturity [Line Items]
Securities available for sale, Amortized Cost	98,833	105,300
Securities available for sale, Gross Unrealized Gains	3,944	2,435
Securities available for sale, Gross Unrealized Losses	(170)	(256)
Securities available for sale, Estimated Fair Value	102,607	107,479
Securities held to maturity, Amortized Cost	82,073	84,290
Securities held to maturity, Gross Unrealized Gains	2,831	1,463
Securities held to maturity, Gross Unrealized Losses	(324)	(1,624)
Securities held to maturity, Estimated Fair Value	84,580	84,129
Mortgage-Backed Securities [Member]
Schedule of Securities Available-for-sale And Held To Maturity [Line Items]
Securities available for sale, Amortized Cost	1,530,366	1,450,194
Securities available for sale, Gross Unrealized Gains	16,456	10,031
Securities available for sale, Gross Unrealized Losses	(9,357)	(27,947)
Securities available for sale, Estimated Fair Value	1,537,465	1,432,278
Securities held to maturity, Amortized Cost	32,673	35,341
Securities held to maturity, Gross Unrealized Gains	234	258
Securities held to maturity, Gross Unrealized Losses	(1,137)	(2,124)
Securities held to maturity, Estimated Fair Value	31,770	33,475
Other Securities [Member]
Schedule of Securities Available-for-sale And Held To Maturity [Line Items]
Securities available for sale, Amortized Cost	1,460	1,460
Securities available for sale, Gross Unrealized Gains	27	19
Securities available for sale, Gross Unrealized Losses
Securities available for sale, Estimated Fair Value	$ 1,487	$ 1,479

XML

Fair Value of Financial Instruments - Estimated Fair Values and Carrying Amounts of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Financial Assets
Cash and cash equivalents	$ 668,570	$ 391,396	$ 347,565	$ 970,977
Loans and loans held for sale	11,076,907		9,065,068
FDIC loss share receivable	120,532	162,312
Financial Liabilities
Deposits	11,981,183	10,737,000	10,641,718
Short-term borrowings	1,034,741	680,344
Long-term debt	365,747	280,699
Carrying Amount [Member]
Financial Assets
Cash and cash equivalents	668,570	391,396
Investment securities	2,141,198	2,090,906
Loans and loans held for sale	11,076,907	9,620,461
FDIC loss share receivable	120,532	162,312
Derivative instruments	40,291	30,076
Accrued interest receivable	36,043	32,143
Financial Liabilities
Deposits	11,981,183	10,737,000
Short-term borrowings	1,034,741	680,344
Long-term debt	365,747	280,699
Derivative instruments	37,568	26,735
Accrued interest payable	7,552	6,102
Fair Value [Member]
Financial Assets
Cash and cash equivalents	668,570	391,396
Investment securities	2,143,016	2,089,363
Loans and loans held for sale	11,006,250	9,724,432
FDIC loss share receivable	21,965	21,918
Derivative instruments	40,291	30,076
Accrued interest receivable	36,043	32,143
Financial Liabilities
Deposits	11,749,790	10,226,573
Short-term borrowings	1,034,741	680,344
Long-term debt	336,326	235,503
Derivative instruments	37,568	26,735
Accrued interest payable	$ 7,552	$ 6,102

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Allowance for Credit Losses and Credit Quality - Investment in Covered Loans and Non-Covered Loans by Credit Quality Indicator (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 10,313,088	$ 8,772,226
Total	585,439	719,793
Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	812,242	87,114
30+ Days Past Due	22,543	6,676
Discount	(13,513)	(7,991)
Total	821,272	85,799
Residential Prime [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	508,678	18,796
30+ Days Past Due	8,412	226
Discount	6,269	(887)
Total	523,359	18,135
Home Equity [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	180,703	53,995
30+ Days Past Due	10,549	5,071
Discount	(7,565)	(5,623)
Total	183,687	53,443
Indirect Automobile [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	850	1,725
30+ Days Past Due	87	128
Discount	(63)
Total	874	1,853
Consumer - Other [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	122,011	12,598
30+ Days Past Due	3,495	1,251
Discount	(12,154)	(1,481)
Total	113,352	12,368
Internally Assigned Grade Loss [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Discount	(60,694)	(57,622)
Total	657,084	398,106
Internally Assigned Grade Loss [Member] | Commercial Real Estate Construction [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Discount	(2,536)	(2,532)
Total	35,647	20,231
Internally Assigned Grade Loss [Member] | Commercial Real Estate - Other [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Discount	(51,217)	(52,176)
Total	487,811	324,838
Internally Assigned Grade Loss [Member] | Commercial Business [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Discount	(6,941)	(2,914)
Total	133,626	53,037
Pass [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	645,436	378,849
Pass [Member] | Commercial Real Estate Construction [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	31,269	17,132
Pass [Member] | Commercial Real Estate - Other [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	482,016	310,303
Pass [Member] | Commercial Business [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	132,151	51,414
Special Mention [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	18,273	17,467
Special Mention [Member] | Commercial Real Estate Construction [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	1,541	196
Special Mention [Member] | Commercial Real Estate - Other [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	13,816	15,351
Special Mention [Member] | Commercial Business [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	2,916	1,920
Substandard [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	52,810	59,288
Substandard [Member] | Commercial Real Estate Construction [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	5,373	5,435
Substandard [Member] | Commercial Real Estate - Other [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	42,866	51,267
Substandard [Member] | Commercial Business [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	4,571	2,586
Doubtful [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	1,259	124
Doubtful [Member] | Commercial Real Estate Construction [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful
Doubtful [Member] | Commercial Real Estate - Other [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	330	93
Doubtful [Member] | Commercial Business [Member] | Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	929	31
Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	585,438	719,793	918,215
Covered Loans [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	274,956	303,185
30+ Days Past Due	46,991	66,800
Discount	(66,526)	(74,549)
Covered Loans [Member] | Residential Prime [Member] | Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	149,945	158,710
30+ Days Past Due	30,381	30,814
Discount	(38,713)	(35,499)
Covered Loans [Member] | Home Equity [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	124,113	143,236
30+ Days Past Due	16,489	35,811
Discount	(30,534)	(41,925)
Covered Loans [Member] | Consumer - Other [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	316	591
30+ Days Past Due	71	144
Discount	2,721	2,875
Covered Loans [Member] | Credit Card [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Credit risk by payment status, Current	582	648
30+ Days Past Due	50	31
Discount
Covered Loans [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	35,902		68,957
Covered Loans [Member] | Internally Assigned Grade Loss [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	356,985	467,930
Discount	(26,968)	(43,573)
Total	330,017	424,357
Covered Loans [Member] | Internally Assigned Grade Loss [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	255,421	295,436
Covered Loans [Member] | Internally Assigned Grade Loss [Member] | Residential Prime [Member] | Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	141,613	154,025
Covered Loans [Member] | Internally Assigned Grade Loss [Member] | Home Equity [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	110,068	137,122
Covered Loans [Member] | Internally Assigned Grade Loss [Member] | Consumer - Other [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	3,108	3,610
Covered Loans [Member] | Internally Assigned Grade Loss [Member] | Credit Card [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	632	679
Covered Loans [Member] | Internally Assigned Grade Loss [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	55,955	74,675
Covered Loans [Member] | Internally Assigned Grade Loss [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	265,128	346,225
Covered Loans [Member] | Internally Assigned Grade Loss [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	35,902	47,030
Covered Loans [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	184,563	222,175
Covered Loans [Member] | Pass [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	39,482	42,886
Covered Loans [Member] | Pass [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	119,489	148,579
Covered Loans [Member] | Pass [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	25,592	30,710
Covered Loans [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	43,218	57,880
Covered Loans [Member] | Special Mention [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	1,997	7,401
Covered Loans [Member] | Special Mention [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	40,291	49,699
Covered Loans [Member] | Special Mention [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	930	780
Covered Loans [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	128,337	183,127
Covered Loans [Member] | Substandard [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	14,476	23,891
Covered Loans [Member] | Substandard [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	104,527	144,680
Covered Loans [Member] | Substandard [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	9,334	14,556
Covered Loans [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	867	4,748
Covered Loans [Member] | Doubtful [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful		497
Covered Loans [Member] | Doubtful [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	821	3,267
Covered Loans [Member] | Doubtful [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	46	984
Non-Covered Loans Excluding Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	2,413,544	2,219,954
30+ Days Past Due	33,742	27,412
Total	2,447,286	2,247,366
Credit risk by payment status, Current	8,786,543	8,222,168
Non-Covered Loans Excluding Acquired Loans [Member] | Residential Prime [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	326,077	286,167
30+ Days Past Due	14,629	11,640
Total	340,706	297,807
Non-Covered Loans Excluding Acquired Loans [Member] | Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	1,163,216	1,091,894
30+ Days Past Due	10,170	9,333
Total	1,173,386	1,101,227
Non-Covered Loans Excluding Acquired Loans [Member] | Indirect Automobile [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	388,356	370,388
30+ Days Past Due	3,125	2,995
Total	391,481	373,383
Non-Covered Loans Excluding Acquired Loans [Member] | Consumer - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	356,189	293,693
30+ Days Past Due	1,318	1,049
Total	357,507	294,742
Non-Covered Loans Excluding Acquired Loans [Member] | Credit Card [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	63,871	62,873
30+ Days Past Due	1,389	769
Total	65,260	63,642
Non-Covered Loans Excluding Acquired Loans [Member] | Residential Subprime [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Current	115,835	114,939
30+ Days Past Due	3,111	1,626
Total	118,946	116,565
Non-Covered Loans Excluding Acquired Loans [Member] | Internally Assigned Grade Loss [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	6,387,446	6,040,955
Non-Covered Loans Excluding Acquired Loans [Member] | Internally Assigned Grade Loss [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	592,861	383,095
Non-Covered Loans Excluding Acquired Loans [Member] | Internally Assigned Grade Loss [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,833,125	2,751,809
Non-Covered Loans Excluding Acquired Loans [Member] | Internally Assigned Grade Loss [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,961,460	2,906,051
Non-Covered Loans Excluding Acquired Loans [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	6,258,726	5,931,779
Non-Covered Loans Excluding Acquired Loans [Member] | Pass [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	581,164	370,824
Non-Covered Loans Excluding Acquired Loans [Member] | Pass [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	2,757,043	2,694,161
Non-Covered Loans Excluding Acquired Loans [Member] | Pass [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	2,920,519	2,866,794
Non-Covered Loans Excluding Acquired Loans [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	74,294	42,700
Non-Covered Loans Excluding Acquired Loans [Member] | Special Mention [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	252	9,309
Non-Covered Loans Excluding Acquired Loans [Member] | Special Mention [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	46,067	27,227
Non-Covered Loans Excluding Acquired Loans [Member] | Special Mention [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	27,975	6,164
Non-Covered Loans Excluding Acquired Loans [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	52,241	65,437
Non-Covered Loans Excluding Acquired Loans [Member] | Substandard [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	11,445	2,962
Non-Covered Loans Excluding Acquired Loans [Member] | Substandard [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	29,783	30,308
Non-Covered Loans Excluding Acquired Loans [Member] | Substandard [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	11,013	32,167
Non-Covered Loans Excluding Acquired Loans [Member] | Doubtful [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	2,185	1,039
Non-Covered Loans Excluding Acquired Loans [Member] | Doubtful [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful
Non-Covered Loans Excluding Acquired Loans [Member] | Doubtful [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	232	113
Non-Covered Loans Excluding Acquired Loans [Member] | Doubtful [Member] | Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Doubtful	$ 1,953	$ 926

XML

Derivative Instruments and Other Hedging Activities - Schedule of Outstanding Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	$ 872,542	$ 868,604
Derivative Liability, Notional Amount	1,078,957	624,455
Other Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value	40,291	30,076
Other Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Fair Value	37,568	26,735
Not Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	872,542	868,604
Derivative Liability, Notional Amount	1,078,957	624,455
Not Designated as Hedging Instruments [Member] | Other Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value	40,291	30,076
Not Designated as Hedging Instruments [Member] | Other Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Fair Value	37,568	26,735
Not Designated as Hedging Instruments [Member] | Interest Rate Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	493,924	380,303
Derivative Liability, Notional Amount	493,924	380,303
Not Designated as Hedging Instruments [Member] | Interest Rate Contracts [Member] | Other Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value	14,653	10,621
Not Designated as Hedging Instruments [Member] | Interest Rate Contracts [Member] | Other Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Fair Value	14,653	10,620
Not Designated as Hedging Instruments [Member] | Forward Sales Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	3,123	192,876
Derivative Liability, Notional Amount	384,907	45,091
Not Designated as Hedging Instruments [Member] | Forward Sales Contracts [Member] | Other Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value	2,414	1,468
Not Designated as Hedging Instruments [Member] | Forward Sales Contracts [Member] | Other Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Fair Value	4,163	287
Not Designated as Hedging Instruments [Member] | Written and Purchased Options [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	375,495	295,425
Derivative Liability, Notional Amount	200,126	199,061
Not Designated as Hedging Instruments [Member] | Written and Purchased Options [Member] | Other Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value	23,224	17,987
Not Designated as Hedging Instruments [Member] | Written and Purchased Options [Member] | Other Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Fair Value	$ 18,752	$ 15,828

XML

Transfers and Servicing of Financial Assets (Including Mortgage Banking Activity) - Schedule of Mortgage Servicing Rights at Carrying Values (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 52,380	$ 46,754
Accumulated Amortization	(34,002)	(31,415)
Net Carrying Amount	18,378	15,339
Mortgage Servicing Rights [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	2,484	2,146
Accumulated Amortization	(887)	(638)
Net Carrying Amount	$ 1,597	$ 1,508

XML

Derivative Instruments and Other Hedging Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Cash as collateral for derivative transactions	$ 8.7	$ 5.0
Fair value of derivatives	$ 0.3

XML

Allowance for Credit Losses and Credit Quality - Schedule of Investment in Impaired Loan (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 35,040		$ 35,040		$ 45,342
Unpaid Principal Balance	35,375		35,375		46,501
Related Allowance	(335)		(335)		(1,159)
Average Recorded Investment	37,121	51,207	35,859	49,381
Interest Income Recognized	19	44	72	172
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,017		11,017		25,018
Unpaid Principal Balance	11,059		11,059		25,877
Related Allowance	(42)		(42)		(859)
Average Recorded Investment	12,359	33,035	12,171	30,517
Interest Income Recognized	19	44	50	145
Commercial Loans [Member] | With No Related Allowance Recorded [Member] | Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	5,146		5,146		8,567
Unpaid Principal Balance	5,146		5,146		8,567
Related Allowance
Average Recorded Investment	5,228	21,452	5,178	22,871
Interest Income Recognized	6	24	14	63
Commercial Loans [Member] | With No Related Allowance Recorded [Member] | Business [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,291		4,291		13,256
Unpaid Principal Balance	4,291		4,291		13,256
Related Allowance
Average Recorded Investment	5,128	10,942	5,006	6,891
Interest Income Recognized	9	17	22	73
Commercial Loans [Member] | With No Related Allowance Recorded [Member] | Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	248		248		258
Unpaid Principal Balance	248		248		258
Related Allowance
Average Recorded Investment	252		250
Interest Income Recognized
Commercial Loans [Member] | With An Allowance Recorded [Member] | Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	905		905		1,268
Unpaid Principal Balance	912		912		1,284
Related Allowance	(7)		(7)		(16)
Average Recorded Investment	925	194	926	306
Interest Income Recognized			1	1
Commercial Loans [Member] | With An Allowance Recorded [Member] | Business [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	675		675		1,927
Unpaid Principal Balance	710		710		2,770
Related Allowance	(35)		(35)		(843)
Average Recorded Investment	1,078	447	1,061	449
Interest Income Recognized	4	3	13	8
Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	13,459		13,459		11,408
Unpaid Principal Balance	13,684		13,684		11,645
Related Allowance	(225)		(225)		(237)
Average Recorded Investment	14,050	8,613	13,258	8,913
Interest Income Recognized			6	13
Mortgage Loans [Member] | With An Allowance Recorded [Member] | Residential Prime [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	10,362		10,362		9,791
Unpaid Principal Balance	10,573		10,573		10,019
Related Allowance	(211)		(211)		(228)
Average Recorded Investment	10,911	8,613	10,131	8,913
Interest Income Recognized			6	13
Mortgage Loans [Member] | With An Allowance Recorded [Member] | Residential Subprime [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,097		3,097		1,617
Unpaid Principal Balance	3,111		3,111		1,626
Related Allowance	(14)		(14)		(9)
Average Recorded Investment	3,139		3,127
Interest Income Recognized
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	10,564		10,564		8,916
Unpaid Principal Balance	10,632		10,632		8,979
Related Allowance	(68)		(68)		(63)
Average Recorded Investment	10,712	9,559	10,430	9,951
Interest Income Recognized			16	14
Consumer Loans [Member] | With An Allowance Recorded [Member] | Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	7,663		7,663		6,506
Unpaid Principal Balance	7,701		7,701		6,550
Related Allowance	(38)		(38)		(44)
Average Recorded Investment	7,825	7,356	7,749	7,541
Interest Income Recognized			5	7
Consumer Loans [Member] | With An Allowance Recorded [Member] | Indirect Automobile [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,185		1,185		1,267
Unpaid Principal Balance	1,192		1,192		1,275
Related Allowance	(7)		(7)		(8)
Average Recorded Investment	1,310	1,228	1,300	1,386
Interest Income Recognized			6	6
Consumer Loans [Member] | With An Allowance Recorded [Member] | Credit Card [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	931		931		404
Unpaid Principal Balance	949		949		411
Related Allowance	(18)		(18)		(7)
Average Recorded Investment	750	448	560	427
Interest Income Recognized
Consumer Loans [Member] | With An Allowance Recorded [Member] | Consumer - Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	537		537		481
Unpaid Principal Balance	542		542		485
Related Allowance	(5)		(5)		(4)
Average Recorded Investment	575	527	571	597
Interest Income Recognized			$ 5	$ 1

XML

Loans Receivable - Schedule of Troubled Debt Restructurings (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Commercial Loans [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs
Total TDRs
Commercial Loans [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current	378	677
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs	1,634	8,064
Total TDRs	2,012	8,741
Commercial Loans [Member] | Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current	811	1,135
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs	2,342	281
Total TDRs	3,153	1,416
Residential Mortgage Loans [Member] | Residential Prime [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs
Total TDRs
Residential Mortgage Loans [Member] | Residential Subprime [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs
Total TDRs
Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current	1,189	1,812
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs	4,224	8,613
Total TDRs	5,413	10,425
Consumer and Other Loans [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current	0	0
Accruing Loans, Past Due Greater than 30 Days	0	0
Nonaccrual TDRs	248	268
Total TDRs	248	268
Consumer and Other Loans [Member] | Indirect Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs
Total TDRs
Consumer and Other Loans [Member] | Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs
Total TDRs
Consumer and Other Loans [Member] | Consumer - Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Loans, Current
Accruing Loans, Past Due Greater than 30 Days
Nonaccrual TDRs
Total TDRs

XML

Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

NOTE 18 – 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 excludes certain financial instruments and all non-financial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value. Refer to Note 1 to these financial statements for the methods and assumptions used to measure the fair value of investment securities and derivative instruments.

Cash and cash equivalents

The carrying amounts of cash and cash equivalents approximate their fair value.

Loans

The fair values of non-covered mortgage loans receivable are estimated based on present values using entry-value rates (the interest rate that would be charged for a similar loan to a borrower with similar risk at the indicated balance sheet date) at June 30, 2014 and December 31, 2013, weighted for varying maturity dates. Other non-covered loans receivable are valued based on present values using entry-value interest rates at June 30, 2014 and December 31, 2013 applicable to each category of loans, which would be classified within Level 3 of the hierarchy. Fair values of mortgage loans held for sale are based on commitments on hand from investors or prevailing market prices, a Level 2 measurement. Covered loans are measured using projections of expected cash flows, exclusive of the shared-loss agreements with the FDIC. Fair value of the covered loans included in the table below reflects the current fair value of these loans, which is based on an updated estimate of the projected cash flow as of the dates indicated. The fair value associated with the loans include estimates related to expected prepayments and the amount and timing of undiscounted expected principal, interest and other cash flows, which also would be classified within Level 3 of the hierarchy.

Accrued Interest Receivable and Accrued Interest Payable

The carrying amount of accrued interest approximates fair value because of the short maturity of these financial instruments.

FDIC Loss Share Receivable

The fair value is determined using projected cash flows from loss sharing agreements based on expected reimbursements for losses at the applicable loss sharing percentages based on the terms of the loss share agreements. Cash flows are discounted to reflect the timing and receipt of the loss sharing reimbursements from the FDIC. The fair value of the Company’s FDIC loss share receivable would be categorized within Level 3 of the hierarchy.

Deposits

The fair values of NOW accounts, money market deposits and savings accounts are the amounts payable on demand at the reporting date. Certificates of deposit were valued using a discounted cash flow model based on the weighted-average rate at June 30, 2014 and December 31, 2013 for deposits with similar remaining maturities. The fair value of the Company’s deposits would therefore be categorized within Level 3 of the fair value hierarchy.

Short-term borrowings

The carrying amounts of short-term borrowings maturing within ninety days approximate their fair values.

Long-term debt

The fair values of long-term debt are estimated using discounted cash flow analyses based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements. The fair value of the Company’s long-term debt would therefore be categorized within Level 3 of the fair value hierarchy.

Off-balance sheet items

The Company has outstanding commitments to extend credit and standby letters of credit. These off-balance sheet financial instruments are generally exercisable at the market rate prevailing at the date the underlying transaction will be completed. At June 30, 2014 and December 31, 2013, the fair value of guarantees under commercial and standby letters of credit was immaterial.

The estimated fair values and carrying amounts of the Company’s financial instruments are as follows:

	June 30, 2014				December 31, 2013
(Dollars in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial Assets
Cash and cash equivalents	$	668,570	$	668,570	$	391,396	$	391,396
Investment securities		2,141,198		2,143,016		2,090,906		2,089,363
Loans and loans held for sale		11,076,907		11,006,250		9,620,461		9,724,432
FDIC loss share receivable		120,532		21,965		162,312		21,918
Derivative instruments		40,291		40,291		30,076		30,076
Accrued interest receivable		36,043		36,043		32,143		32,143
Financial Liabilities
Deposits	$	11,981,183	$	11,749,790	$	10,737,000	$	10,226,573
Short-term borrowings		1,034,741		1,034,741		680,344		680,344
Long-term debt		365,747		336,326		280,699		235,503
Derivative instruments		37,568		37,568		26,735		26,735
Accrued interest payable		7,552		7,552		6,102		6,102

The fair value estimates presented herein are based upon pertinent information available to management as of June 30, 2014 and December 31, 2013. 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 that date and, therefore, current estimates of fair value may differ significantly from the amounts presented herein.

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Earnings Per Share - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share Basic And Diluted [Line Items]
Weighted average number of shares, Recognition and Retention Plan	629,055	652,683	634,883	647,332
Weighted average number of shares, treasury stock	1,861,247	2,221,550	1,933,367	2,279,103
Stock Options [Member]
Earnings Per Share Basic And Diluted [Line Items]
Stock options having antidilutive effect on earnings per share	11,623	792,893	11,623	787,893

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

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 measured at fair value:

	June 30, 2014						December 31, 2013
(Dollars 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	$	178,380	$	170,527	$	7,853	$	97,273	$	96,875	$	398

Financial Asset and Liabilities Measured at Fair Value on Recurring Basis

The Company has segregated all financial assets and liabilities that are measured at fair value on a recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to estimate the fair value at the measurement date in the tables below.

(Dollars in thousands)	June 30, 2014
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Available for sale securities	$	—	$	2,008,953	$	—	$	2,008,953
Mortgage loans held for sale		—		178,380		—		178,380
Derivative instruments		—		40,291		—		40,291
Total	$	—	$	2,227,624	$	—	$	2,227,624
Liabilities
Derivative instruments		—		37,568		—		37,568
Total	$	—	$	37,568	$	—	$	37,568
	December 31, 2013
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Available for sale securities	$	15,496	$	1,921,301	$	—	$	1,936,797
Mortgage loans held for sale		—		97,273		—		97,273
Derivative instruments		—		30,076		—		30,076
Total	$	15,496	$	2,048,650	$	—	$	2,064,146
Liabilities
Derivative instruments		—		26,735		—		26,735
Total	$	—	$	26,735	$	—	$	26,735

Gains and Losses Included in Earnings Related to Asset and Liabilities Measured at Fair Value on Recurring Basis

Gains and losses (realized and unrealized) included in earnings (or changes in net assets) during 2014 related to assets and liabilities measured at fair value on a recurring basis are reported in non-interest income or other comprehensive income as follows:

(Dollars in thousands)	Noninterest income		Other comprehensive income
Total gains (losses) included in earnings (or changes in net assets)	$	3,410	$	—
Change in unrealized gains (losses) relating to assets still held at June 30, 2014		—		21,184

Financial Asset and Liabilities Measured at Fair Value on Nonrecurring Basis

The Company has segregated all financial assets and liabilities that are measured at fair value on a non-recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date in the tables below.

(Dollars in thousands)	June 30, 2014
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Loans	$	—	$	2,045	$	—	$	2,045
Mortgage loans held for sale		—		200		—		200
OREO		—		10,407		—		10,407
Total	$	—	$	12,452	$	—	$	12,452

(Dollars in thousands)	December 31, 2013
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Loans	$	—	$	3,070	$	—	$	3,070
Mortgage loans held for sale		—		11,876		—		11,876
OREO		—		14,598		—		14,598
Total	$	—	$	29,544	$	—	$	29,544

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Allowance for Credit Losses and Credit Quality - Schedule of Allowance for Loan Losses for Covered Loans, by Loan Portfolio (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Transfer of balance to OREO	$ (5,608)	$ (17,685)
Transfer of balance to the RULC		(9,828)
Loans charged off	(10,773)	(6,583)
Recoveries	3,573	2,050
Balance at beginning of period	11,147	0
Transfer of balance from the allowance for loan losses		9,828
Balance at end of period	11,260	10,342
Balance at end of period	585,439		719,793
Non-Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	71,899	83,027
(Reversal of) Provision for loan losses	3,993	(1,594)
Transfer of balance to OREO	(523)	(973)
Transfer of balance to the RULC		(9,828)
Loans charged off	(5,380)	(4,249)
Recoveries	3,535	2,050
Balance at end of period	73,524	68,433
Balance at beginning of period	11,147
Transfer of balance from the allowance for loan losses		9,828
(Reversal of) Provision for unfunded commitments	113	514
Balance at end of period	11,260	10,342
Allowance on loans individually evaluated for impairment	202	325
Allowance on loans collectively evaluated for impairment	73,321	68,108
Balance at end of period	10,313,089	7,984,822
Balance at end of period individually evaluated for impairment	11,845	31,958
Balance at end of period collectively evaluated for impairment	10,301,244	7,952,864
Balance at end of period acquired with deteriorated credit quality	41,307	47,153
Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	71,175	168,576
(Reversal of) Provision for loan losses	2,858	25
(Decrease) Increase in FDIC loss share receivable	(3,598)	(55,085)
Transfer of balance to OREO	(5,085)	(16,712)
Transfer of balance to the RULC
Loans charged off	(5,393)	(2,334)
Recoveries	38
Balance at end of period	59,995	94,470
Balance at beginning of period
Transfer of balance from the allowance for loan losses
Balance at end of period
Allowance on loans individually evaluated for impairment
Allowance on loans collectively evaluated for impairment	59,995	94,470
Balance at end of period	585,438	918,215	719,793
Balance at end of period individually evaluated for impairment
Balance at end of period collectively evaluated for impairment	585,439	918,215
Balance at end of period acquired with deteriorated credit quality	49,271	172,043
Commercial Real Estate [Member] | Non-Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	26,590	38,264
(Reversal of) Provision for loan losses	585	(7,459)
Transfer of balance to OREO	(108)	(264)
Transfer of balance to the RULC		(2,939)
Loans charged off	(660)	(807)
Recoveries	1,699	500
Balance at end of period	28,106	27,295
Balance at beginning of period	3,089
Transfer of balance from the allowance for loan losses		2,939
(Reversal of) Provision for unfunded commitments	112	545
Balance at end of period	3,201	3,484
Allowance on loans individually evaluated for impairment		72
Allowance on loans collectively evaluated for impairment	28,105	27,223
Balance at end of period	3,949,444	3,224,078
Balance at end of period individually evaluated for impairment	5,976	16,525
Balance at end of period collectively evaluated for impairment	3,943,468	3,207,553
Balance at end of period acquired with deteriorated credit quality	30,799	40,015
Commercial Real Estate [Member] | Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	38,772	100,871
(Reversal of) Provision for loan losses	1,474	27
(Decrease) Increase in FDIC loss share receivable	(2,121)	(26,737)
Transfer of balance to OREO	(1,857)	(12,178)
Loans charged off	(3,726)	(2,334)
Recoveries	38
Balance at end of period	32,580	59,649
Allowance on loans individually evaluated for impairment
Allowance on loans collectively evaluated for impairment	32,580	59,649
Balance at end of period	294,115	520,160
Balance at end of period individually evaluated for impairment
Balance at end of period collectively evaluated for impairment	294,115	520,160
Balance at end of period acquired with deteriorated credit quality	6,523	132,565
Commercial Business [Member] | Non-Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	28,515	28,721
(Reversal of) Provision for loan losses	782	557
Transfer of balance to OREO	(162)	(90)
Transfer of balance to the RULC		(3,497)
Loans charged off	(668)	(395)
Recoveries	65	259
Balance at end of period	28,532	25,555
Balance at beginning of period	4,839
Transfer of balance from the allowance for loan losses		3,497
(Reversal of) Provision for unfunded commitments	(43)	12
Balance at end of period	4,796	3,509
Allowance on loans individually evaluated for impairment	31	116
Allowance on loans collectively evaluated for impairment	28,501	25,439
Balance at end of period	3,095,087	2,618,963
Balance at end of period individually evaluated for impairment	4,563	14,014
Balance at end of period collectively evaluated for impairment	3,090,524	2,604,949
Balance at end of period acquired with deteriorated credit quality	5,496	3,468
Commercial Business [Member] | Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	5,380	11,375
(Reversal of) Provision for loan losses	313
(Decrease) Increase in FDIC loss share receivable	749	(2,672)
Transfer of balance to OREO	(1,162)	(314)
Loans charged off	(1,589)
Recoveries
Balance at end of period	3,691	8,389
Allowance on loans individually evaluated for impairment
Allowance on loans collectively evaluated for impairment	3,691	8,389
Balance at end of period	35,902	68,957
Balance at end of period individually evaluated for impairment
Balance at end of period collectively evaluated for impairment	35,902	68,957
Balance at end of period acquired with deteriorated credit quality		2,005
Mortgage [Member] | Non-Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	2,546	2,125
(Reversal of) Provision for loan losses	171	2,961
Transfer of balance to OREO	(253)	(612)
Transfer of balance to the RULC		(40)
Loans charged off	(435)	(2,603)
Recoveries	114	188
Balance at end of period	2,143	2,019
Balance at beginning of period	72
Transfer of balance from the allowance for loan losses		40
(Reversal of) Provision for unfunded commitments	4
Balance at end of period	76	40
Allowance on loans individually evaluated for impairment	171	137
Allowance on loans collectively evaluated for impairment	1,972	1,882
Balance at end of period	983,011	350,842
Balance at end of period individually evaluated for impairment	1,058	1,152
Balance at end of period collectively evaluated for impairment	981,953	349,690
Balance at end of period acquired with deteriorated credit quality	1,209	383
Consumer [Member] | Non-Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	14,248	13,917
(Reversal of) Provision for loan losses	2,455	2,347
Transfer of balance to OREO		(7)
Transfer of balance to the RULC		(3,352)
Loans charged off	(3,617)	(444)
Recoveries	1,657	1,103
Balance at end of period	14,743	13,564
Balance at beginning of period	3,147
Transfer of balance from the allowance for loan losses		3,352
(Reversal of) Provision for unfunded commitments	40	(43)
Balance at end of period	3,187	3,309
Allowance on loans individually evaluated for impairment
Allowance on loans collectively evaluated for impairment	14,743	13,564
Balance at end of period	2,285,547	1,790,939
Balance at end of period individually evaluated for impairment	248	267
Balance at end of period collectively evaluated for impairment	2,285,299	1,790,672
Balance at end of period acquired with deteriorated credit quality	3,803	3,287
Consumer [Member] | Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	16,134	33,764
(Reversal of) Provision for loan losses	479	(1)
(Decrease) Increase in FDIC loss share receivable	(126)	(18,603)
Transfer of balance to OREO	(1,532)	1
Loans charged off	(78)
Recoveries
Balance at end of period	14,877	15,161
Allowance on loans individually evaluated for impairment
Allowance on loans collectively evaluated for impairment	14,877	15,161
Balance at end of period	113,809	161,444
Balance at end of period individually evaluated for impairment
Balance at end of period collectively evaluated for impairment	113,809	161,444
Balance at end of period acquired with deteriorated credit quality	14,475	19,504
Unallocated [Member] | Non-Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period
(Reversal of) Provision for loan losses
Transfer of balance to OREO
Loans charged off
Recoveries
Balance at end of period
Balance at beginning of period
(Reversal of) Provision for unfunded commitments
Balance at end of period
Allowance on loans individually evaluated for impairment
Allowance on loans collectively evaluated for impairment
Balance at end of period
Balance at end of period individually evaluated for impairment
Balance at end of period collectively evaluated for impairment
Balance at end of period acquired with deteriorated credit quality
Unallocated [Member] | Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period
(Reversal of) Provision for loan losses
(Decrease) Increase in FDIC loss share receivable
Transfer of balance to OREO
Loans charged off
Recoveries
Balance at end of period
Allowance on loans individually evaluated for impairment
Allowance on loans collectively evaluated for impairment
Balance at end of period
Balance at end of period individually evaluated for impairment
Balance at end of period collectively evaluated for impairment
Balance at end of period acquired with deteriorated credit quality
Mortgage [Member] | Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	10,889	22,566
(Reversal of) Provision for loan losses	592	(1)
(Decrease) Increase in FDIC loss share receivable	(2,100)	(7,073)
Transfer of balance to OREO	(534)	(4,221)
Loans charged off
Recoveries
Balance at end of period	8,847	11,271
Allowance on loans individually evaluated for impairment
Allowance on loans collectively evaluated for impairment	8,847	11,271
Balance at end of period	141,613	167,654
Balance at end of period individually evaluated for impairment
Balance at end of period collectively evaluated for impairment	141,613	167,654
Balance at end of period acquired with deteriorated credit quality	$ 28,273	$ 17,969

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Share-Based Compensation - Unvested Restricted Stock Award Activity (Detail)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Balance at beginning of period	523,756	538,202
Granted	141,377	164,151
Forfeited	(9,631)	(26,866)
Earned and issued	(140,616)	(123,328)
Balance at end of period	514,886	552,159

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Derivative Instruments and Other Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2014

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Schedule of Outstanding Derivative Instruments

Information pertaining to outstanding derivative instruments is as follows:

(Dollars in thousands)	Balance Sheet Location		Asset Derivatives Fair Value				Balance Sheet Location		Liability Derivatives Fair Value
			June 30, 2014		December 31, 2013				June 30, 2014		December 31, 2013
Derivatives not designated as hedging instruments under ASC Topic 815:
Interest rate contracts		Other assets	$	14,653	$	10,621		Other liabilities	$	14,653	$	10,620
Forward sales contracts		Other assets		2,414		1,468		Other liabilities		4,163		287
Written and purchased options		Other assets		23,224		17,987		Other liabilities		18,752		15,828
Total derivatives not designated as hedging instruments under ASC Topic 815				40,291		30,076				37,568		26,735
Total			$	40,291	$	30,076			$	37,568	$	26,735
			Asset Derivatives Notional Amount						Liability Derivatives Notional Amount
(Dollars in thousands)			June 30, 2014		December 31, 2013				June 30, 2014		December 31, 2013
Derivatives not designated as hedging instruments under ASC Topic 815:
Interest rate contracts			$	493,924	$	380,303			$	493,924	$	380,303
Forward sales contracts				3,123		192,876				384,907		45,091
Written and purchased options				375,495		295,425				200,126		199,061
Total derivatives not designated as hedging instruments under ASC Topic 815				872,542		868,604				1,078,957		624,455
Total			$	872,542	$	868,604			$	1,078,957	$	624,455

Reconciliation of Gross Amounts in Consolidated Balance Sheets

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.

	June 30, 2014
(Dollars in thousands)	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet
			Derivatives		Collateral (1)			Net
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		14,653		—		—			14,653
Written and purchased options		18,645		—		—			18,645
Total derivative assets subject to master netting arrangements	$	33,298	$	—	$	—		$	33,298
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		14,653		—		(4,060	)		10,593
Total derivative liabilities subject to master netting arrangements	$	14,653	$	—	$	(4,060	)	$	10,593

	December 31, 2013
(Dollars in thousands)	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet
			Derivatives		Collateral (1)			Net
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		10,621		—		—			10,621
Written and purchased options		15,801		—		—			15,801
Total derivative assets subject to master netting arrangements	$	26,422	$	—	$	—		$	26,422
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		10,620		—		(5,419	)		5,201
Total derivative liabilities subject to master netting arrangements	$	10,620	$	—	$	(5,419	)	$	5,201

⁽¹⁾  Consists of cash collateral recorded at cost, which approximates fair value, and investment securities.

Effect of Hedging Instruments on Consolidated Financial Statements

At June 30, 2014 and 2013, and for the three and six months then ended, information pertaining to the effect of the hedging instruments on the consolidated financial statements is as follows:

	Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)				Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)				Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	As of June 30					For the Three Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013			2014		2013
Derivatives in ASC Topic 815 Cash Flow Hedging Relationships
Interest rate contracts	$	—	$	—	Other income (expense)	$	—	$	32	Other income (expense)	$	—	$	—
Total	$	—	$	—		$	—	$	32		$	—	$	—

	Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)				Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)					Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	As of June 30					For the Six Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013				2014		2013
Derivatives in ASC Topic 815 Cash Flow Hedging Relationships
Interest rate contracts	$	—	$	—	Other income (expense)	$	—	$	(392	)	Other income (expense)	$	—	$	—
Total	$	—	$	—		$	—	$	(392	)		$	—	$	—

		Amount of Gain (Loss) Recognized in Income on Derivatives
	Location of Gain (Loss) Recognized in Income on Derivatives	For the Three Months Ended June 30						For the Six Months Ended June 30
(Dollars in thousands)		2014			2013			2014			2013
Derivatives Not Designated as Hedging Instruments under ASC Topic 815
Interest rate contracts	Other income (expense)	$	1,027		$	471			1,565			688
Forward sales contracts	Mortgage Income		(859	)		8,320			(3,864	)		5,408
Written and purchased options	Mortgage Income		(205	)		(4,815	)		1,628			(3,730	)
Total		$	(37	)	$	3,976		$	(671	)	$	2,366

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Acquisition Activity - Schedule of Business Acquisitions by Acquisition, Equity Interest Issued or Issuable (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended				0 Months Ended	6 Months Ended		0 Months Ended	6 Months Ended
	Jan. 17, 2014	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	May 31, 2014 Teche [Member]	Jun. 30, 2014 Teche [Member]	May 31, 2014 Teche [Member]	Jun. 30, 2014 First Private [Member]	Jun. 30, 2014 First Private [Member]
Equity consideration
Common stock issued, Amount						$ 156,026			$ 58,639
Common stock issued, Number of Shares						2,498,007			847,509
Total equity consideration						156,026			58,639
Non-Equity consideration
Cash	91,600					714			1
Total consideration paid					156,700	156,740		58,600	58,640
Fair value of net assets assumed including identifiable intangible assets						72,308
Fair value of net liabilities assumed including identifiable intangible assets									29,980
Goodwill	$ 8,400	$ 524,154	$ 401,872	$ 401,872		$ 84,432	$ 84,400		$ 28,660

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Loans Receivable - Schedule of Non-Covered Loans on Nonaccrual Status (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	$ 34,187	$ 43,687
Commercial Loans [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	1,349	1,803
Commercial Loans [Member] | Commercial Real Estate - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	4,331	7,648
Commercial Loans [Member] | Business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	4,191	15,020
Residential Mortgage Loans [Member] | Residential Prime [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	10,573	8,611
Residential Mortgage Loans [Member] | Residential Subprime [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	3,111	1,626
Consumer and Other Loans [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	7,949	6,808
Consumer and Other Loans [Member] | Indirect Automobile [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	1,192	1,275
Consumer and Other Loans [Member] | Credit Card [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	949	411
Consumer and Other Loans [Member] | Consumer - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans on nonaccrual status	$ 542	$ 485

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Business Segments - Schedule of Segment Reporting Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Interest income	$ 119,220	$ 108,177	$ 233,451	$ 214,593
Interest expense	10,241	11,695	20,065	25,239
Net interest income	108,979	96,482	213,386	189,354
(Reversal of) Provision for loan losses	4,748	1,807	6,851	(1,569)
Mortgage income	17,957	17,708	28,089	36,639
Title income	5,262	5,696	9,429	10,717
Other non-interest income	24,744	19,085	46,126	39,624
Core deposit intangible amortization	1,185	1,125	2,350	2,250
Allocated expenses
Other non-interest expenses	126,190	116,236	232,452	260,009
Income before income tax expense	24,819	19,803	55,377	15,644
Income tax expense (benefit)	6,271	4,213	14,434	(663)
Net income (loss)	18,548	15,590	40,943	16,307
Total loans and loans held for sale	11,076,907	9,065,068	11,076,907	9,065,068
Total assets	15,325,042	12,823,503	15,325,042	12,823,503	13,365,550
Total deposits	11,981,183	10,641,718	11,981,183	10,641,718	10,737,000
Average assets	14,041,562	12,881,551	13,704,121	12,977,745
IBERIABANK [Member]
Segment Reporting Information [Line Items]
Interest income	117,544	106,668	230,692	211,595
Interest expense	9,764	11,106	19,367	24,055
Net interest income	107,780	95,562	211,325	187,540
(Reversal of) Provision for loan losses	4,764	1,807	6,860	(1,548)
Mortgage income	88	(2)	85	(3)
Title income
Other non-interest income	24,757	19,084	46,150	39,628
Core deposit intangible amortization	1,185	1,125	2,350	2,250
Allocated expenses	(3,595)	(882)	(6,725)	(1,745)
Other non-interest expenses	110,355	97,435	202,429	224,476
Income before income tax expense	19,916	15,159	52,646	3,732
Income tax expense (benefit)	4,339	2,389	13,343	(5,343)
Net income (loss)	15,577	12,770	39,303	9,075
Total loans and loans held for sale	10,875,895	8,889,618	10,875,895	8,889,618
Total assets	15,067,545	12,592,635	15,067,545	12,592,635
Total deposits	11,976,403	10,638,853	11,976,403	10,638,853
Average assets	13,832,987	12,650,402	13,517,696	12,740,709
IMC [Member]
Segment Reporting Information [Line Items]
Interest income	1,676	1,495	2,758	2,969
Interest expense	477	589	698	1,184
Net interest income	1,199	906	2,060	1,785
(Reversal of) Provision for loan losses	(16)		(9)	(21)
Mortgage income	17,869	17,710	28,004	36,642
Title income
Other non-interest income	(13)	1	(24)	(4)
Core deposit intangible amortization
Allocated expenses	2,544	649	4,735	1,280
Other non-interest expenses	11,635	14,469	21,934	26,926
Income before income tax expense	4,892	3,499	3,380	10,238
Income tax expense (benefit)	1,923	1,374	1,335	4,019
Net income (loss)	2,969	2,125	2,045	6,219
Total loans and loans held for sale	201,012	175,449	201,012	175,449
Total assets	232,403	205,069	232,403	205,069
Total deposits	4,780	2,865	4,780	2,865
Average assets	183,838	205,677	161,571	211,923
LTC [Member]
Segment Reporting Information [Line Items]
Interest income		14	1	29
Interest expense
Net interest income		14	1	29
(Reversal of) Provision for loan losses
Mortgage income
Title income	5,262	5,696	9,429	10,717
Other non-interest income
Core deposit intangible amortization
Allocated expenses	1,051	233	1,990	465
Other non-interest expenses	4,200	4,332	8,089	8,607
Income before income tax expense	11	1,145	(649)	1,674
Income tax expense (benefit)	9	450	(244)	661
Net income (loss)	2	695	(405)	1,013
Total loans and loans held for sale
Total assets	25,094	25,799	25,094	25,799
Total deposits
Average assets	$ 24,737	$ 25,472	$ 24,854	$ 25,113

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Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Maturity (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]
Securities Available for Sale, Weighted Average Yield, Within one year or less	2.00%
Securities Available for Sale, Weighted Average Yield, One through five years	1.55%
Securities Available for Sale, Weighted Average Yield, After five through ten years	2.10%
Securities Available for Sale, Weighted Average Yield, Over ten years	2.20%
Securities Available for Sale, Weighted Average Yield, Total	2.09%
Securities Available for Sale, Amortized Cost, Within one year or less	$ 16,390
Securities Available for Sale, Amortized Cost, One through five years	262,494
Securities Available for Sale, Amortized Cost, After five through ten years	504,532
Securities Available for Sale, Amortized Cost, Over ten years	1,218,946
Securities Available for Sale, Amortized Cost, Total	2,002,362
Securities Available for Sale, Estimated Fair Value, Within one year or less	16,445
Securities Available for Sale, Estimated Fair Value, One through five years	263,033
Securities Available for Sale, Estimated Fair Value, After five through ten years	508,167
Securities Available for Sale, Estimated Fair Value, Over ten years	1,221,308
Securities Available for Sale, Estimated Fair Value, Totals	2,008,953
Securities Held to Maturity, Weighted Average Yield, Within one year or less	2.11%
Securities Held to Maturity, Weighted Average Yield, One through five years	3.24%
Securities Held to Maturity, Weighted Average Yield, After five through ten years	2.92%
Securities Held to Maturity, Weighted Average Yield, Over ten years	3.10%
Securities Held to Maturity, Weighted Average Yield, Totals	2.95%
Securities Held to Maturity, Amortized Cost, Within one year or less	17,499
Securities Held to Maturity, Amortized Cost, One through five years	13,510
Securities Held to Maturity, Amortized Cost, After five through ten years	20,495
Securities Held to Maturity, Amortized Cost, Over ten years	80,741
Securities Held to Maturity, Amortized Cost, Totals	132,245	154,109
Securities Held to Maturity, Estimated Fair Value, Within one year or less	17,713
Securities Held to Maturity, Estimated Fair Value, One through five years	13,867
Securities Held to Maturity, Estimated Fair Value, After five through ten years	21,200
Securities Held to Maturity, Estimated Fair Value, Over ten years	81,283
Securities held to maturity, Estimated Fair Value	$ 134,063	$ 152,566

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Earnings Per Share - Schedule of Calculation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share, Basic And Diluted, By Common Class, Including Two Class Method [Line Items]
Income available to common shareholders	$ 18,548	$ 15,590	$ 40,943	$ 16,307
Distributed earnings (capital) to common shareholders - basic	18,262	15,300	40,262	15,994
Distributed and undistributed earnings to common shareholders - diluted	18,250	15,297	40,244	15,994
Weighted average shares outstanding - basic	30,787,520	29,610,315	30,303,294	29,556,810
Weighted average shares outstanding - diluted	30,386,105	29,066,906	29,904,370	29,023,002
Earnings per common share - Basic	$ 0.60	$ 0.53	$ 1.35	$ 0.55
Earnings per common share - Diluted	$ 0.60	$ 0.53	$ 1.35	$ 0.55
Unvested Restricted Stock [Member]
Earnings Per Share, Basic And Diluted, By Common Class, Including Two Class Method [Line Items]
Distributed earnings (capital) to unvested restricted stock	(286)	(290)	(681)	(313)
Undistributed earnings reallocated to unvested restricted stock	$ (12)	$ (3)	$ (18)
Earnings per common share - Basic	$ 0.54	$ 0.51	$ 1.27	$ 0.55
Earnings per common share - Diluted	$ 0.56	$ 0.52	$ 1.31	$ 0.55

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Recent Accounting Pronouncements

6 Months Ended

Jun. 30, 2014

Accounting Changes And Error Corrections [Abstract]

Recent Accounting Pronouncements

NOTE 2 – RECENT ACCOUNTING PRONOUNCEMENTS

ASU No. 2014-01

In January 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-01, Investments – Equity Method and Joint Ventures, in order to provide guidance on accounting for investments in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for low-income housing tax credit (“LIHTC”). Through the Company’s investments in these entities, the Company receives tax credits and/or tax deductions from operating losses, which are allowable on the Company’s filed income tax returns over a 10-year period, subject to recapture over a 15-year period beginning with the first year the tax credits are earned.

Under current U.S. generally accepted accounting principles (“U.S. GAAP”), the Company may elect to account for the investments using the effective yield method if certain conditions are met, and if they are not met, the investments are accounted for under either the equity method or the cost method. The Company currently accounts for its investments under the equity method. The provisions of ASU No. 2014-01 permit the Company to make an accounting policy election to account for its investments in LIHTC entities using the proportional amortization method if certain conditions are met. Under the proportional amortization method, the Company would amortize the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognize the net investment performance in the Company’s consolidated statements of comprehensive income as a component of income tax expense or benefit. ASU No. 2014-01 also required the Company to disclose information that enables users of the consolidated financial statements to understand the nature of the Company’s investments, the measurement of these investments, and their effect on the Company’s financial position and results of operations.

ASU No. 2014-01 is effective beginning with the Company’s first quarter ending March 31, 2015, with early adoption permitted. If adopted, the provisions of ASU No. 2014-01 would be applied retrospectively to all financial statement periods presented. The Company is currently assessing the effect a change in accounting policy would have on its consolidated financial statements, but does not anticipate the potential accounting policy change to the proportional amortization method would be material to the financial condition, results of operations, or liquidity of the Company. The expanded disclosures required by ASU No. 2014-01 will be incorporated in the Company’s future consolidated financial statements upon adoption.

ASU No. 2014-04

In January 2014, the FASB issued ASU No. 2014-04, Receivables-Troubled Debt Restructurings by Creditors, in order to clarify when a creditor should reclassify mortgage loans collateralized by residential real estate from their loan portfolio to other real estate owned (“OREO”) upon foreclosure. The amendments in the ASU deem that an in-substance repossession or foreclosure has occurred when either the creditor obtains legal title to the property or the borrower conveys all interest in the property to the creditor to satisfy the loan through completion of a deed in-lieu-of foreclosure or similar legal agreement. Additionally, ASU No. 2014-04 requires the Company to disclose both the amount of foreclosed residential real estate property held and the investment in consumer mortgage loans collateralized by residential real estate that are in the process of foreclosure.

ASU No. 2014-04 is effective beginning with the Company’s first quarter ending March 31, 2015, with early adoption permitted. When adopting the provisions of ASU No. 2014-04, the Company could apply the provisions using either a prospective transition method or a modified retrospective method. The Company is currently assessing the effect the adoption would have on its consolidated financial statements, but does not anticipate adoption would materially affect the Company’s financial condition, results of operations, or liquidity. The expanded disclosures required by this ASU will be incorporated in the Company’s future consolidated financial statements upon adoption.

ASU No. 2014-09

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which implements a common revenue standard and clarifies the principles used for recognizing revenue. The amendments in the ASU clarify that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. As part of that principle, the entity should identify the contract(s) with the customer, identify the performance obligations of the contract, determine the transaction price, allocate that transaction price to the performance obligation(s) of the contract, and then recognize revenue when or as the entity satisfies the performance
obligation(s).

ASU No. 2014-09 is effective beginning with the Company’s first quarter ending March 31, 2017. The Company is currently assessing the effect the adoption of this ASU will have on its consolidated financial statements, but the Company does not expect adoption will have a significant impact on the Company’s consolidated financial statements.

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Investment Securities - Schedule of Realized Gains and Losses from Sale of Securities Classified as Available for Sale (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Investments Debt And Equity Securities [Abstract]
Realized gains	$ 8	$ 4	$ 27	$ 2,369
Realized losses		(70)		(108)
Net realized gains (losses)	$ 8	$ (66)	$ 27	$ 2,261

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Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Estimated Fair Values and Carrying Amounts of Financial Instruments

The estimated fair values and carrying amounts of the Company’s financial instruments are as follows:

	June 30, 2014				December 31, 2013
(Dollars in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial Assets
Cash and cash equivalents	$	668,570	$	668,570	$	391,396	$	391,396
Investment securities		2,141,198		2,143,016		2,090,906		2,089,363
Loans and loans held for sale		11,076,907		11,006,250		9,620,461		9,724,432
FDIC loss share receivable		120,532		21,965		162,312		21,918
Derivative instruments		40,291		40,291		30,076		30,076
Accrued interest receivable		36,043		36,043		32,143		32,143
Financial Liabilities
Deposits	$	11,981,183	$	11,749,790	$	10,737,000	$	10,226,573
Short-term borrowings		1,034,741		1,034,741		680,344		680,344
Long-term debt		365,747		336,326		280,699		235,503
Derivative instruments		37,568		37,568		26,735		26,735
Accrued interest payable		7,552		7,552		6,102		6,102

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Acquisition Activity (Tables)

6 Months Ended

Jun. 30, 2014

Supplemental Pro Forma Information

The following unaudited pro forma information for the six months ended June 30, 2013 reflects the Company’s estimated consolidated results of operations as if the acquisitions of Trust One-Memphis, Teche, and First Private occurred at January 1, 2013, unadjusted for potential cost savings and preliminary purchase price adjustments.

(Dollars in thousands, except per share data)	2013
Interest and non-interest income	$	332,674
Net income		20,022
Earnings per share – basic		0.68
Earnings per share – diluted		0.68

Teche [Member]

Schedule of Business Acquisitions by Acquisition, Equity Interest Issued or Issuable

The following summarizes consideration paid and a preliminary allocation of purchase price to net assets acquired.

(Dollars in thousands)	Number of Shares		Amount
Equity consideration
Common stock issued		2,498,007	$	156,026
Total equity consideration				156,026
Non-Equity consideration
Cash				714
Total consideration paid				156,740
Fair value of net assets assumed including identifiable intangible assets				72,308
Goodwill			$	84,432

Schedule of Business Acquisitions, by Acquisition

The acquired assets and liabilities, as well as the preliminary adjustments to record the assets and liabilities at their estimated fair values, are presented in the following table.

Teche

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	71,606	$	—		$	71,606
Investment securities		24,077		1,092	(1)		25,169
Loans		716,587		(16,637	)(2)		699,950
Other real estate owned		329		—			329
Core deposit intangible		—		2,055	(3)		2,055
Deferred tax asset		1,057		7,373	(4)		8,430
Other assets		56,708		(6,512	)(5)		50,196
Total Assets	$	870,364	$	(12,629	)	$	857,735
Liabilities
Interest-bearing deposits	$	520,446	$	902	(6)	$	521,348
Non-interest-bearing deposits		118,256		—			118,256
Borrowings		134,228		6,304	(7)		140,532
Other liabilities		5,291		—			5,291
Total Liabilities	$	778,221	$	7,206		$	785,427

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment to the book value of Teche’s investments to their estimated fair value based on fair values on the date of acquisition.

⁽²⁾  The amount represents the adjustment of the book value of Teche loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽³⁾  The amount represents the estimated fair value of the core deposit intangible asset created in the acquisition.

⁽⁴⁾  The amount represents the deferred tax asset recognized on the fair value adjustment of Teche acquired assets and assumed liabilities.

⁽⁵⁾  The amount represents the write down of the book value of Teche’s property, equipment, and other assets to their estimated fair value at the acquisition date.

⁽⁶⁾  The adjustment is necessary because the weighted average interest rate of Teche’s deposits exceeded the cost of similar funding at the time of acquisition. The fair value adjustment will be amortized to reduce future interest expense over the life of the portfolio, which is estimated at 85 months.

⁽⁷⁾  The amount represents the estimated fair value adjustment for the debt assumed, primarily driven by the estimated market interest rate on the debt relative to the stated interest rate.

First Private [Member]

Schedule of Business Acquisitions by Acquisition, Equity Interest Issued or Issuable

The following summarizes consideration paid and a preliminary allocation of purchase price to net assets acquired.

(Dollars in thousands)	Number of Shares		Amount
Equity consideration
Common stock issued		847,509	$	58,639
Total equity consideration				58,639
Non-Equity consideration
Cash				1
Total consideration paid				58,640
Fair value of net liabilities assumed including identifiable intangible assets				29,980
Goodwill			$	28,660

Schedule of Business Acquisitions, by Acquisition

The acquired assets and liabilities, as well as the preliminary adjustments to record the assets and liabilities at their estimated fair values, are presented in the following table.

First Private

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	26,621	$	—		$	26,621
Investment securities		19,110		—			19,110
Loans		294,425		4,207	(1)		298,632
Other real estate owned		—		—			—
Core deposit intangible		—		506	(2)		506
Deferred tax asset (liability)		530		(1,676	) (3)		(1,146	)
Other assets		5,230		—			5,230
Total Assets	$	345,916	$	3,037		$	348,953
Liabilities
Interest-bearing deposits	$	261,713	$	220	(4)	$	261,933
Non-interest-bearing deposits		50,333		—			50,333
Borrowings		6,451		—			6,451
Other liabilities		256		—			256
Total Liabilities	$	318,753	$	220		$	318,973

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment of the book value of First Private loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽²⁾  The amount represents the fair value of the core deposit intangible asset created in the acquisition.

⁽³⁾  The amount represents the deferred tax liability recognized on the fair value adjustment of First Private acquired assets and assumed liabilities.

⁽⁴⁾  The adjustment is necessary because the weighted average interest rate of First Private’s deposits exceeded the cost of similar funding at the time of acquisition.

Trust One-Memphis [Member]

Schedule of Business Acquisitions, by Acquisition

The acquired assets and liabilities, as well as the preliminary adjustments to record the assets and liabilities at their estimated fair values, are presented in the following table.

Trust One-Memphis

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	92,060	$	—		$	92,060
Loans		88,179		(1,290	)(1)		86,889
Other real estate owned		1,325		—			1,325
Core deposit intangible		—		2,597	(2)		2,597
Other assets		368		—			368
Total Assets	$	181,932	$	1,307		$	183,239
Liabilities
Interest-bearing deposits	$	164,942	$	—		$	164,942
Non-interest-bearing deposits		26,373		—			26,373
Deferred tax liability		—		654	(3)		654
Other liabilities		84		—			84
Total Liabilities	$	191,399	$	654		$	192,053

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment of the book value of Trust One-Memphis loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽²⁾  The amount represents the estimated fair value of the core deposit intangible asset created in the acquisition.

⁽³⁾  The amount represents the deferred tax liability recognized on the fair value adjustment of Trust One-Memphis acquired assets and assumed liabilities.

Title Company LLC [Member]

Schedule of Assets Acquired under Business Acquisitions

As part of the acquisition, LTC also acquired or created the following other assets:

(Dollars in thousands)	Amount
Non-compete agreement	$	63
Title plant		14
Other intangible assets		75
Other assets		2
Total Assets	$	154

Louisiana Abstract and Title, LLC [Member]

Schedule of Assets Acquired under Business Acquisitions

As part of the acquisition, LTC also acquired or created the following other assets:

(Dollars in thousands)	Amount
Non-compete agreement	$	100
Title plant		9
Other intangible assets		130
Other assets		6
Total Assets	$	245

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Schedule of Calculation of Basic and Diluted Earnings Per Share

The following table presents the calculation of basic and diluted earnings per share for the periods indicated.

	For the Three Months Ended June 30						For the Six Months Ended June 30
	2014			2013			2014			2013
(Dollars in thousands, except per share data)
Income available to common shareholders	$	18,548		$	15,590		$	40,943		$	16,307
Distributed earnings (capital) to unvested restricted stock		(286	)		(290	)		(681	)		(313	)
Distributed earnings (capital) to common shareholders – basic		18,262			15,300			40,262			15,994
Undistributed earnings reallocated to unvested restricted stock		(12	)		(3	)		(18	)		—
Distributed and undistributed earnings to common shareholders – diluted	$	18,250		$	15,297		$	40,244		$	15,994
Weighted average shares outstanding – basic (1)		30,787,520			29,610,315			30,303,294			29,556,810
Weighted average shares outstanding – diluted		30,386,105			29,066,906			29,904,370			29,023,002
Earnings per common share – basic	$	0.60		$	0.53		$	1.35		$	0.55
Earnings per common share – diluted		0.60			0.53			1.35			0.55
Earnings per unvested restricted stock share – basic		0.54			0.51			1.27			0.55
Earnings per unvested restricted stock share – diluted		0.56			0.52			1.31			0.55

(1) Weighted average basic shares outstanding include 527,605 and 567,162 shares of unvested restricted stock for the three months ended June 30, 2014 and 2013, respectively, and 535,442 and 565,860 shares for the six months ended June 30, 2014 and 2013, respectively.

Schedule of Basic Earnings Per Common Share

Additional information on the Company’s basic earnings per common share is shown in the following table.

	For the Three Months Ended June 30				For the Six Months Ended June 30
	2014		2013		2014		2013
(Dollars in thousands, except per share data)
Distributed earnings to common shareholders	$	11,184	$	9,914	$	21,214	$	19,810
Undistributed earnings (distributed capital) to common shareholders		7,078		5,386		19,048		(3,816	)
Total earnings to common shareholders	$	18,262	$	15,300	$	40,262	$	15,994
Distributed earnings to unvested restricted stock	$	175	$	188	$	359	$	387
Undistributed earnings (distributed capital) to unvested restricted stock		111		102		322		(74	)
Total earnings allocated to restricted stock	$	286	$	290	$	681	$	313
Distributed earnings per common share	$	0.37	$	0.34	$	0.71	$	0.68
Undistributed earnings (distributed capital) per common share		0.23		0.19		0.64		(0.13	)
Total earnings per common share – basic	$	0.60	$	0.53	$	1.35	$	0.55
Distributed earnings per unvested restricted stock share	$	0.33	$	0.33	$	0.67	$	0.68
Undistributed earnings (distributed capital) per unvested restricted stock share		0.21		0.18		0.60		(0.13	)
Total earnings per unvested restricted stock share – basic	$	0.54	$	0.51	$	1.27	$	0.55

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Share-Based Compensation - Schedule of Share and Dividend Equivalent Share Award Activity (Parenthetical) (Detail) (USD $)	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Market price of Company's stock	$ 69.19	$ 53.61

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Acquisition Activity - Supplemental Pro Forma Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Business Acquisition Pro Forma Information [Abstract]
Interest and non-interest income	$ 332,674
Net income	$ 20,022
Earnings per share - basic	$ 0.68
Earnings per share - diluted	$ 0.68

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Business Segments (Tables)

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

The Company’s wealth management, capital markets and trust operating segments are aggregated within the IBERIABANK reportable operating segment because they do not meet the thresholds specified by ASC 280 and based on the qualitative factors presented within ASC 280. The Company’s IMC and LTC segments do not meet the quantitative thresholds specified by ASC 280, but are reported because management believes information about those segments is useful to users of the financial statements.

	Three Months Ended June 30, 2014
(Dollars in thousands)	IBERIABANK			IMC			LTC		Consolidated
Interest income	$	117,544		$	1,676		$	—	$	119,220
Interest expense		9,764			477			—		10,241
Net interest income		107,780			1,199			—		108,979
(Reversal of) Provision for loan losses		4,764			(16	)		—		4,748
Mortgage income		88			17,869			—		17,957
Title income		—			—			5,262		5,262
Other non-interest income		24,757			(13	)		—		24,744
Core deposit intangible amortization		1,185			—			—		1,185
Allocated expenses		(3,595	)		2,544			1,051		—
Other non-interest expenses		110,355			11,635			4,200		126,190
Income before income taxes		19,916			4,892			11		24,819
Income tax expense		4,339			1,923			9		6,271
Net income	$	15,577		$	2,969		$	2	$	18,548
Total loans and loans held for sale	$	10,875,895		$	201,012		$	—	$	11,076,907
Total assets		15,067,545			232,403			25,094		15,325,042
Total deposits		11,976,403			4,780			—		11,981,183
Average assets		13,832,987			183,838			24,737		14,041,562

	Three Months Ended June 30, 2013
(Dollars in thousands)	IBERIABANK			IMC		LTC		Consolidated
Interest income	$	106,668		$	1,495	$	14	$	108,177
Interest expense		11,106			589		—		11,695
Net interest income		95,562			906		14		96,482
Provision for loan losses		1,807			—		—		1,807
Mortgage income		(2	)		17,710		—		17,708
Title income		—			—		5,696		5,696
Other non-interest income		19,084			1		—		19,085
Core deposit intangible amortization		1,125			—		—		1,125
Allocated expenses		(882	)		649		233		—
Other non-interest expenses		97,435			14,469		4,332		116,236
Income before income taxes		15,159			3,499		1,145		19,803
Income tax expense		2,389			1,374		450		4,213
Net income	$	12,770		$	2,125	$	695	$	15,590
Total loans and loans held for sale	$	8,889,618		$	175,449	$	—	$	9,065,068
Total assets		12,592,635			205,069		25,799		12,823,503
Total deposits		10,638,853			2,865		—		10,641,718
Average assets		12,650,402			205,677		25,472		12,881,551

	Six Months Ended June 30, 2014
(Dollars in thousands)	IBERIABANK			IMC			LTC			Consolidated
Interest income	$	230,692		$	2,758		$	1		$	233,451
Interest expense		19,367			698			—			20,065
Net interest income		211,325			2,060			1			213,386
(Reversal of) Provision for loan losses		6,860			(9	)		—			6,851
Mortgage income		85			28,004			—			28,089
Title income		—			—			9,429			9,429
Other non-interest income		46,150			(24	)		—			46,126
Core deposit intangible amortization		2,350			—			—			2,350
Allocated expenses		(6,725	)		4,735			1,990			—
Other non-interest expenses		202,429			21,934			8,089			232,452
Income (loss) before income taxes		52,646			3,380			(649	)		55,377
Income tax expense (benefit)		13,343			1,335			(244	)		14,434
Net income (loss)	$	39,303		$	2,045		$	(405	)	$	40,943
Total loans and loans held for sale	$	10,875,895		$	201,012		$	—		$	11,076,907
Total assets		15,067,545			232,403			25,094			15,325,042
Total deposits		11,976,403			4,780			—			11,981,183
Average assets		13,517,696			161,571			24,854			13,704,121

	Six Months Ended June 30, 2013
(Dollars in thousands)	IBERIABANK			IMC			LTC		Consolidated
Interest income	$	211,595		$	2,969		$	29	$	214,593
Interest expense		24,055			1,184			—		25,239
Net interest income		187,540			1,785			29		189,354
(Reversal of) Provision for loan losses		(1,548	)		(21	)		—		(1,569	)
Mortgage income		(3	)		36,642			—		36,639
Title income		—			—			10,717		10,717
Other non-interest income		39,628			(4	)		—		39,624
Core deposit intangible amortization		2,250			—			—		2,250
Allocated expenses		(1,745	)		1,280			465		—
Other non-interest expenses		224,476			26,926			8,607		260,009
Income before income taxes		3,732			10,238			1,674		15,644
Income tax expense (benefit)		(5,343	)		4,019			661		(663	)
Net income	$	9,075		$	6,219		$	1,013	$	16,307
Total loans and loans held for sale	$	8,889,619		$	175,449		$	—	$	9,065,068
Total assets		12,592,635			205,069			25,799		12,823,503
Total deposits		10,638,853			2,865			—		10,641,718
Average assets		12,740,709			211,923			25,113		12,977,745

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Investment Securities (Tables)

6 Months Ended

Jun. 30, 2014

Investments Debt And Equity Securities [Abstract]

Schedule of Amortized Cost and Fair Values of Investment Securities, with Gross Unrealized Gains and Losses

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

	June 30, 2014
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	371,703	$	1,702	$	(6,011	)	$	367,394
Obligations of state and political obligations		98,833		3,944		(170	)		102,607
Mortgage-backed securities		1,530,366		16,456		(9,357	)		1,537,465
Other securities		1,460		27		—			1,487
Total securities available for sale	$	2,002,362	$	22,129	$	(15,538	)	$	2,008,953
Securities held to maturity:
U.S. Government-sponsored enterprise obligations	$	17,499	$	214	$	—		$	17,713
Obligations of state and political obligations		82,073		2,831		(324	)		84,580
Mortgage-backed securities		32,673		234		(1,137	)		31,770
Total securities held to maturity	$	132,245	$	3,279	$	(1,461	)	$	134,063

	December 31, 2013
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	406,092	$	1,382	$	(11,913	)	$	395,561
Obligations of state and political obligations		105,300		2,435		(256	)		107,479
Mortgage-backed securities		1,450,194		10,031		(27,947	)		1,432,278
Other securities		1,460		19		—			1,479
Total securities available for sale	$	1,963,046	$	13,867	$	(40,116	)	$	1,936,797
Securities held to maturity:
U.S. Government-sponsored enterprise obligations	$	34,478	$	484	$	—		$	34,962
Obligations of state and political obligations		84,290		1,463		(1,624	)		84,129
Mortgage-backed securities		35,341		258		(2,124	)		33,475
Total securities held to maturity	$	154,109	$	2,205	$	(3,748	)	$	152,566

Schedule of Securities with Gross Unrealized Losses Aggregated by Investment Category

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, is as follows:

	June 30, 2014
	Less Than Twelve Months					Over Twelve Months					Total
(Dollars in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	—		$	—	$	(6,011	)	$	258,673	$	(6,011	)	$	258,673
Obligations of state and political obligations		—			—		(170	)		1,437		(170	)		1,437
Mortgage-backed securities		(869	)		182,114		(8,488	)		354,316		(9,357	)		536,430
Total securities available for sale	$	(869	)	$	182,114	$	(14,669	)	$	614,426	$	(15,538	)	$	796,540
Securities held to maturity:
Obligations of state and political obligations	$	—		$	569	$	(324	)	$	13,937	$	(324	)	$	14,506
Mortgage-backed securities		—			—		(1,137	)		24,785		(1,137	)		24,785
Total securities held to maturity	$	—		$	569	$	(1,461	)	$	38,722	$	(1,461	)	$	39,291

	December 31, 2013
	Less Than Twelve Months					Over Twelve Months					Total
(Dollars in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	(11,764	)	$	298,515	$	(149	)	$	5,515	$	(11,913	)	$	304,030
Obligations of state and political obligations		(30	)		2,415		(226	)		1,047		(256	)		3,462
Mortgage-backed securities		(23,749	)		864,899		(4,198	)		81,870		(27,947	)		946,769
Total securities available for sale	$	(35,543	)	$	1,165,829	$	(4,573	)	$	88,432	$	(40,116	)	$	1,254,261
Securities held to maturity:
Obligations of state and political obligations	$	(1,181	)	$	29,355	$	(443	)	$	6,240	$	(1,624	)	$	35,595
Mortgage-backed securities		(952	)		12,913		(1,172	)		11,616		(2,124	)		24,529
Total securities held to maturity	$	(2,133	)	$	42,268	$	(1,615	)	$	17,856	$	(3,748	)	$	60,124

Additional Information on Securities in a Continuous Loss Position

Additional information on securities that have been in a continuous loss position for over twelve months at June 30, 2014 and December 31, 2013 is presented in the following table.

(Dollars in thousands)	June 30, 2014		December 31, 2013
Number of securities
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae		80		20
Issued by political subdivisions		11		5
		91		25
Amortized Cost Basis
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae	$	653,411	$	104,520
Issued by political subdivisions		15,867		7,956
	$	669,278	$	112,476
Unrealized Loss
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae	$	15,636	$	5,519
Issued by political subdivisions		494		669
	$	16,130	$	6,188

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 June 30, 2014 are shown 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
(Dollars in thousands)	Weighted Average Yield			Amortized Cost		Estimated Fair Value		Weighted Average Yield			Amortized Cost		Estimated Fair Value
Within one year or less		2.00	%	$	16,390	$	16,445		2.11	%	$	17,499	$	17,713
One through five years		1.55			262,494		263,033		3.24			13,510		13,867
After five through ten years		2.10			504,532		508,167		2.92			20,495		21,200
Over ten years		2.20			1,218,946		1,221,308		3.10			80,741		81,283
Total		2.09	%	$	2,002,362	$	2,008,953		2.95	%	$	132,245	$	134,063

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 June 30					Six Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013
Realized gains	$	8	$	4		$	27	$	2,369
Realized losses		—		(70	)		—		(108	)
Net realized gains (losses)	$	8	$	(66	)	$	27	$	2,261

Schedule of Securities in Other Assets on Company's Consolidated Balance Sheets

At June 30, 2014 and December 31, 2013, the Company included the following securities in “Other assets” on the consolidated balance sheets:

(Dollars in thousands)	June 30 2014		December 31 2013
Federal Home Loan Bank (FHLB) stock	$	44,715	$	24,369
Federal Reserve Bank (FRB) stock		28,098		28,098
Other investments		3,306		1,306
Total	$	76,119	$	53,773

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Loans Receivable (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of Non-Covered and Covered Loans

Loans receivable consist of the following, segregated into non-covered and covered loans, for the periods indicated:

	June 30, 2014
(Dollars in thousands)	Non-covered loans		Covered loans		Total
Commercial loans:
Real estate	$	3,949,444	$	294,115	$	4,243,559
Business		3,095,087		35,902		3,130,989
		7,044,531		330,017		7,374,548
Residential mortgage loans:
Residential 1-4 family		926,972		141,613		1,068,585
Construction / Owner Occupied		56,039		—		56,039
		983,011		141,613		1,124,624
Consumer and other loans:
Home equity		1,357,073		110,068		1,467,141
Indirect automobile		392,355		—		392,355
Other		536,119		3,740		539,859
		2,285,547		113,808		2,399,355
Total	$	10,313,089	$	585,438	$	10,898,527

	December 31, 2013
(Dollars in thousands)	Non-covered loans		Covered loans		Total
Commercial loans:
Real estate	$	3,479,973	$	387,332	$	3,867,305
Business		2,959,088		37,025		2,996,113
		6,439,061		424,357		6,863,418
Residential mortgage loans:
Residential 1-4 family		423,057		154,025		577,082
Construction / Owner Occupied		9,450		—		9,450
		432,507		154,025		586,532
Consumer and other loans:
Home equity		1,154,670		137,122		1,291,792
Indirect automobile		375,236		—		375,236
Other		370,752		4,289		375,041
		1,900,658		141,411		2,042,069
Total	$	8,772,226	$	719,793	$	9,492,019

Schedule of Non-Covered Loans on Nonaccrual Status

The following table provides the recorded investment of non-covered loans, excluding acquired loans, on non-accrual status at June 30, 2014 and December 31, 2013.

(Dollars in thousands)	June 30 2014		December 31 2013
Commercial real estate construction	$	1,349	$	1,803
Commercial real estate – other		4,331		7,648
Commercial business		4,191		15,020
Residential prime		10,573		8,611
Residential subprime		3,111		1,626
Home equity		7,949		6,808
Indirect automobile		1,192		1,275
Credit card		949		411
Other		542		485
Total	$	34,187	$	43,687

Schedule of Carrying Amount of Acquired Covered Loans

The carrying amount of the acquired covered loans at June 30, 2014 and December 31, 2013 consisted of loans determined to be impaired at the acquisition date, which are accounted for in accordance with ASC Topic 310-30, and loans that were considered to be performing at the acquisition date, accounted for by analogy to ASC Topic 310-30, as detailed in the following tables.

	June 30, 2014
(Dollars in thousands)	Acquired Impaired Loans		Acquired Performing Loans		Total Covered Loans
Commercial loans:
Real estate	$	6,523	$	287,592	$	294,115
Business		—		35,902		35,902
		6,523		323,494		330,017
Residential mortgage loans:
Residential 1-4 family		28,273		113,340		141,613
Construction / Owner Occupied		—		—		—
		28,273		113,340		141,613
Consumer and other loans:
Home equity		13,879		96,189		110,068
Indirect automobile		—		—		—
Other		596		3,145		3,741
		14,475		99,334		113,809
Total	$	49,271	$	536,168	$	585,439

	December 31, 2013
(Dollars in thousands)	Acquired Impaired Loans		Acquired Performing Loans		Total Covered Loans
Commercial loans:
Real estate	$	14,904	$	372,428	$	387,332
Business		—		37,025		37,025
		14,904		409,453		424,357
Residential mortgage loans:
Residential 1-4 family		28,223		125,802		154,025
Construction / Owner Occupied		—		—		—
		28,223		125,802		154,025
Consumer and other loans:
Home equity		21,768		115,354		137,122
Indirect automobile		—		—		—
Other		1,182		3,107		4,289
		22,950		118,461		141,411
Total	$	66,077	$	653,716	$	719,793

Schedule of Carrying Amount of Loans Acquired

The Company acquired loans (both covered and non-covered) through previous acquisitions, which are subject to ASC Topic 310-30.

As discussed in Note 4, during 2014, the Company acquired loans of $86.9 million from Trust One-Memphis, $700.0 million from Teche, and $298.6 million for First Private in the current period. $1.0 billion in loans acquired are accounted for under ASC Topic 310-10, while the carrying amounts of the loans acquired in the current period subject to ASC Topic 310-30 are detailed in the following table as of the purchase date. The allocation of loans acquired from both Teche and First Private between loans subject to ASC Topic 310-30 and those subject to ASC Topic 310-10 is preliminary and subject to change up to one year after the acquisition dates as information on these loans becomes available.

(Dollars in thousands)	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Contractually required principal and interest at acquisition	$	82,967		$	15,130		$	98,097
Nonaccretable difference (expected losses and foregone interest)		(4,197	)		(361	)		(4,558	)
Cash flows expected to be collected at acquisition		78,770			14,769			93,539
Accretable yield		(8,242	)		(1,536	)		(9,778	)
Basis in acquired loans at acquisition	$	70,528		$	13,233		$	83,761

Summary of Changes in Accretable Yields of Acquired Loans

The following is a summary of changes in the accretable difference of acquired loans during the six months ended June 30, 2014 and 2013.

	June 30, 2014
(Dollars in thousands)	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Balance at beginning of period	$	78,349		$	276,543		$	354,892
Acquisition		8,242			1,536			9,778
Transfers from nonaccretable difference to accretable yield		4,128			13,517			17,645
Accretion		(4,089	)		(50,429	)		(54,518	)
Changes in expected cash flows not affecting nonaccretable differences (1)		(12,176	)		12,720			544
Balance at end of period	$	74,454		$	253,887		$	328,341

	June 30, 2013
	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Balance at beginning of period	$	76,623		$	279,770		$	356,393
Transfers from nonaccretable difference to accretable yield		6,368			32,039			38,407
Accretion		(10,973	)		(81,227	)		(92,200	)
Changes in expected cash flows not affecting nonaccretable differences (1)		4,158			70,721			74,879
Balance at end of period	$	76,176		$	301,303		$	377,479

(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 Troubled Debt Restructurings

Information about the Company’s troubled debt restructurings (“TDRs”) at June 30, 2014 and 2013 is presented in the following tables.  

	June 30, 2014								June 30, 2013
	Accruing Loans								Accruing Loans
(Dollars in thousands)	Current		Past Due > 30 days		Nonaccrual TDRs		Total TDRs		Current		Past Due > 30 days		Nonaccrual TDRs		Total TDRs
Commercial real estate construction	$	—	$	—	$	—	$	—	$	—		—		—		—
Commercial real estate – other		378		—		1,634		2,012		677		—		8,064		8,741
Commercial business		811		—		2,342		3,153		1,135		—		281		1,416
Residential prime		—		—		—		—		—		—		—		—
Residential subprime		—		—		—		—		—		—		—		—
Home equity		—		—		248		248		—		—		268		268
Indirect automobile		—		—		—		—		—		—		—		—
Credit card		—		—		—		—		—		—		—		—
Other		—		—		—		—		—		—		—		—
Total	$	1,189	$	—	$	4,224	$	5,413	$	1,812	$	—	$	8,613	$	10,425

Schedule of Modified TDRs

The following table provides information on how the TDRs were modified during the six months ended June 30:

(Dollars in thousands)	2014		2013
Extended maturities	$	—	$	—
Interest rate adjustment		—		—
Maturity and interest rate adjustment		—		1,545
Movement to or extension of interest-rate only payments		—		—
Forbearance		—		—
Other concession(s) (1)		—		—
Total	$	—	$	1,545

⁽¹⁾ Other concessions include concessions or a combination of concessions that do not consist of maturity extensions, interest rate adjustments, forbearance or covenant modifications.

Non-Covered Loans Excluding Acquired Loans [Member]

Schedule of Aging of Non-Covered Loans

The following tables provide an analysis of the aging of non-covered loans as of June 30, 2014 and December 31, 2013.  

	June 30, 2014
	Non-covered loans excluding acquired loans
	Past Due (1)								Current		Total Non-covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	56	$	223	$	1,349	$	1,628	$	591,233	$	592,861	$	—
Commercial real estate – other		387		112		4,331		4,830		2,828,295		2,833,125		—
Commercial business		3,742		56		4,191		7,989		2,953,471		2,961,460		—
Residential prime		2,581		1,455		10,593		14,629		326,077		340,706		20
Residential subprime		—		—		3,111		3,111		115,835		118,946		—
Home equity		1,518		703		7,949		10,170		1,163,216		1,173,386		—
Indirect automobile		1,611		322		1,192		3,125		388,356		391,481		—
Credit card		282		158		949		1,389		63,871		65,260		—
Other		567		209		542		1,318		356,189		357,507		—
Total	$	10,744	$	3,238	$	34,207	$	48,189	$	8,786,543	$	8,834,732	$	20

	December 31, 2013
	Non-covered loans excluding acquired loans
	Past Due (1)								Current		Total Non-covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	—	$	—	$	1,803	$	1,803	$	381,292	$	383,095	$	—
Commercial real estate – other		6,098		5,630		7,650		19,378		2,732,431		2,751,809		2
Commercial business		2,117		423		15,020		17,560		2,888,491		2,906,051		—
Residential prime		1,104		852		9,684		11,640		286,167		297,807		1,073
Residential subprime		—		—		1,626		1,626		114,939		116,565		—
Home equity		1,956		569		6,808		9,333		1,091,894		1,101,227		—
Indirect automobile		1,427		293		1,275		2,995		370,388		373,383		—
Credit card		266		92		411		769		62,873		63,642		—
Other		458		106		485		1,049		293,693		294,742		—
Total	$	13,426	$	7,965	$	44,762	$	66,153	$	8,222,168	$	8,288,321	$	1,075

⁽¹⁾  Past due loans include loans on nonaccrual status as of the period indicated. Nonaccrual loans are presented separately in the “Nonaccrual Loans” section below.

Non-Covered Acquired Loans [Member]

Schedule of Aging of Non-Covered Loans

	June 30, 2014
	Non-covered acquired loans
	Past Due (1)								Current		Discount/ Premium			Total Non- covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	—	$	597	$	2,183	$	2,780	$	35,403	$	(2,536	)	$	35,647	$	2,090
Commercial real estate – other		3,584		628		23,144		27,356		511,672		(51,217	)		487,811		21,592
Commercial business		1,944		281		2,212		4,437		136,130		(6,941	)		133,626		2,172
Residential prime		331		1,378		6,703		8,412		508,678		6,269			523,359		525
Home equity		1,260		622		8,667		10,549		180,703		(7,565	)		183,687		4,629
Indirect automobile		28		—		59		87		850		(63	)		874		59
Other		1,004		395		2,096		3,495		122,011		(12,154	)		113,352		343
Total	$	8,151	$	3,901	$	45,064	$	57,116	$	1,495,447	$	(74,207	)	$	1,478,356	$	31,410

	December 31, 2013
	Non-covered acquired loans
	Past Due (1)								Current		Discount/ Premium			Total Non- covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	388	$	—	$	2,542	$	2,930	$	19,833	$	(2,532	)	$	20,231	$	2,542
Commercial real estate – other		1,798		1,963		27,967		31,728		345,286		(52,176	)		324,838		27,967
Commercial business		544		—		1,218		1,762		54,189		(2,914	)		53,037		1,218
Residential prime		—		—		226		226		18,796		(887	)		18,135		226
Home equity		313		516		4,242		5,071		53,995		(5,623	)		53,443		4,242
Indirect automobile		33		—		95		128		1,725		—			1,853		95
Other		175		101		975		1,251		12,598		(1,481	)		12,368		975
Total	$	3,251	$	2,580	$	37,265	$	43,096	$	506,422	$	(65,613	)	$	483,905	$	37,265

⁽¹⁾  Past due information includes acquired loans at the gross loan balance, prior to application of discounts.

TDRs [Member]

Schedule of Subsequently Defaulted TDRs

Information about the Company’s TDRs occurring in these periods is presented in the following table.

	June 30, 2014						June 30, 2013
(In thousands, except number of loans)	Number of Loans		Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment  (1)		Number of Loans		Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment  (1)
Commercial real estate		—	$	—	$	—		1	$	1,545	$	1,545
Commercial business		—		—		—		—		—		—
Residential prime		—		—		—		—		—		—
Home Equity		—		—		—		—		—		—
Indirect automobile		—		—		—		—		—		—
Credit card		—		—		—		—		—		—
Other		—		—		—		—		—		—
Total		—	$	—	$	—		1	$	1,545	$	1,545

⁽¹⁾ Recorded investment includes any allowance for credit losses recorded on the TDRs at the dates indicated.

Information detailing non-covered TDRs that subsequently defaulted during the previous twelve months is presented in the following table. The Company has defined a default as any loan with a loan payment that is currently past due greater than 30 days, or was past due greater than 30 days at any point during the previous twelve months, or since the date of modification, whichever is shorter.

	June 30, 2014				June 30, 2013
(In thousands, except number of loans)	Number of Loans		Recorded Investment		Number of Loans		Recorded Investment
Commercial real estate		31	$	1,635		48	$	8,673
Commercial business		11		2,115		8		1,417
Residential prime		—		—		—		—
Home Equity		1		40		1		49
Indirect automobile		—		—		—		—
Credit card		—		—		—		—
Other		1		—		1		—
Total		44	$	3,790		58	$	10,139

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Basis of Presentation

6 Months Ended

Jun. 30, 2014

Accounting Policies [Abstract]

Basis of Presentation

NOTE 1 – BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include information or footnotes necessary for a complete presentation of financial position, results of operations and cash flows in conformity with generally accepted accounting principles. These interim financial statements should be read in conjunction with the audited consolidated financial statements and note disclosures for IBERIABANK Corporation (the “Company”) previously filed with the Securities and Exchange Commission (the “SEC”) in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, IBERIABANK, Lenders Title Company (“LTC”), IBERIA Capital Partners L.L.C. (“ICP”), IB Aircraft Holdings, LLC, 1887 Leasing LLC, IBERIA Asset Management, Inc. (“IAM”), and IBERIA CDE, L.L.C. (“CDE”). All significant intercompany balances and transactions have been eliminated in consolidation. All normal, recurring adjustments which, in the opinion of management, are necessary for a fair presentation of the financial statements have been included. Certain amounts reported in prior periods have been reclassified to conform to the current period presentation.

NATURE OF OPERATIONS

The Company offers commercial and retail banking products and services to customers throughout locations in six states through IBERIABANK. The Company also operates mortgage production offices in twelve states through IBERIABANK Mortgage Company (“IMC”), and offers a full line of title insurance and closing services throughout Arkansas and Louisiana through LTC and its subsidiaries. ICP provides equity research, institutional sales and trading, and corporate finance services. 1887 Leasing LLC owns an aircraft used by management of the Company, and IB Aircraft Holdings, LLC owns a fractional share of a separate aircraft also used by management. IAM provides wealth management and trust services for commercial and private banking clients. CDE is engaged in the purchase of tax credits.

USE OF ESTIMATES

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Material estimates that are susceptible to significant change in the near term are the allowance for credit losses, valuation of and accounting for loans covered by loss sharing arrangements with the FDIC and the related loss share receivables, valuation of and accounting for acquired loans, and valuation of goodwill, intangible assets and other purchase accounting adjustments.

CONCENTRATION OF CREDIT RISKS

Most of the Company’s business activity is with customers located within the States of Louisiana, Florida, Arkansas, Alabama, Texas, and Tennessee. The Company’s lending activity is concentrated in its market areas in those states. The Company has emphasized originations of commercial loans and private banking loans, defined as loans to larger consumer clients. Repayments on loans are expected to come from cash flows of the borrower and/or guarantor. Losses on secured loans are limited by the value of the collateral upon default of the borrowers. The Company does not have any significant concentrations to any one industry or customer.

FAIR VALUE MEASUREMENTS

The Company estimates fair value based on the assumptions market participants would use when selling an asset or transferring a liability and characterizes such measurements within the fair value hierarchy based on the inputs used to develop those assumptions and measure fair value. The hierarchy requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows:

• Level 1 – Quoted prices in active markets for identical assets or liabilities.

• Level 2 – Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.

• Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

A description of the valuation methodologies used for instruments measured at fair value follows, as well as the classification of such instruments within the valuation hierarchy.

Investment securities

Securities are classified within Level 1 where quoted market prices are available in an active market. Inputs include securities that have quoted prices in active markets for identical assets. If quoted market prices are unavailable, fair value is estimated using quoted prices of securities with similar characteristics, at which point the securities would be classified within Level 2 of the hierarchy. Examples may include certain collateralized mortgage and debt obligations.

Mortgage loans held for sale

Mortgage loans originated and held for sale, excluding loans held for sale that are recorded at fair value under the fair value option, are carried at the lower of cost or estimated fair value. When determining the fair value of loans held for sale, the Company obtains quotes or bids on these loans directly from purchasing financial institutions (Level 2). Mortgage loans held for sale that were recorded at estimated fair value are included in Note 17.

Impaired loans

Loans are measured for impairment using the methods permitted by Accounting Standards Codification (“ASC”) Topic 310. Fair value measurements are used in determining impairment using either the loan’s observable market price (Level 1), if available, or the fair value of the collateral if the loan is collateral dependent (Level 2). Measuring the impairment of loans using the present value of expected future cash flows, discounted at the loan’s effective interest rate, is not considered a fair value measurement. Fair value of the collateral is determined by appraisals or independent valuation.

Other real estate owned (OREO)

Fair values of OREO at June 30, 2014 and December 31, 2013 are determined by sales agreement or appraisal, and costs to sell are based on estimation per the terms and conditions of the sales agreement or amounts commonly used in real estate transactions. Inputs include appraisal values on the properties or recent sales activity for similar assets in the property’s market, and thus OREO measured at fair value would be classified within Level 2 of the hierarchy. The Company included property write-downs of $0.6 million and $1.4 million in earnings for the three months ended June 30, 2014 and 2013, respectively, and $1.4 million and $2.6 million for the six months ended June 30, 2014 and 2013, respectively.

Derivative financial instruments

The Company enters into commitments to originate loans whereby the interest rate on the prospective loan is determined prior to funding. Rate lock commitments on mortgage loans that are intended to be sold are considered to be derivatives. The Company offers its customers a certificate of deposit that provides the purchaser a guaranteed return of principal at maturity plus potential return, which allows the Company to identify a known cost of funds. The rate of return is based on an equity index, and as such represents an embedded derivative. Fair value of interest rate swaps, interest rate lock commitments, forward sales contracts, and equity-linked written and purchased options are estimated using prices of financial instruments with similar characteristics, and thus are classified within Level 2 of the fair value hierarchy.

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Allowance for Credit Losses and Credit Quality (Tables)

6 Months Ended

Jun. 30, 2014

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

A summary of changes in the allowance for credit losses for the covered loan and non-covered loan portfolios for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
	Non-covered loans
(Dollars in thousands)	Excluding Acquired Loans			Acquired Loans			Covered Loans			Total
Allowance for credit losses
Balance at beginning of period	$	67,342		$	4,557		$	71,175		$	143,074
(Reversal of) Provision for loan losses before benefit attributable to FDIC loss share agreements		5,078			(1,085	)		(740	)		3,253
Adjustment attributable to FDIC loss share arrangements		—			—			3,598			3,598
Net (reversal of) provision for loan losses		5,078			(1,085	)		2,858			6,851
Adjustment attributable to FDIC loss share arrangements		—			—			(3,598	)		(3,598	)
Transfer of balance to OREO		—			(523	)		(5,085	)		(5,608	)
Loans charged-off		(5,198	)		(182	)		(5,393	)		(10,773	)
Recoveries		3,426			109			38			3,573
Balance at end of period	$	70,648		$	2,876		$	59,995		$	133,519
Reserve for unfunded lending commitments
Balance, beginning of period	$	11,147		$	—		$	—		$	11,147
Provision for unfunded lending commitments		113			—			—			113
Balance at end of period	$	11,260		$	—		$	—		$	11,260

	June 30, 2013
	Non-covered loans
	Excluding Acquired Loans			Acquired Loans			Covered Loans			Total
Allowance for loan losses
Balance at beginning of period	$	74,211		$	8,816		$	168,576		$	251,603
(Reversal of) Provision for loan losses before adjustment attributable to FDIC loss share agreements		(585	)		(1,009	)		(55,060	)		(56,654	)
Adjustment attributable to FDIC loss share arrangements		—			—			55,085			55,085
Net (reversal of) provision for loan losses		(585	)		(1,009	)		25			(1,569	)
Adjustment attributable to FDIC loss share arrangements		—			—			(55,085	)		(55,085	)
Transfer of balance to OREO		—			(973	)		(16,712	)		(17,685	)
Transfer of balance to the RULC		(9,828	)		—			—			(9,828	)
Loans charged-off		(4,249	)		—			(2,334	)		(6,583	)
Recoveries		2,050			—			—			2,050
Balance at end of period		61,599			6,834		$	94,470		$	162,903
Reserve for unfunded lending commitments
Balance, beginning of period		—			—			—			—
Transfer of balance from the allowance for loan losses		9,828			—			—			9,828
Provision for unfunded lending commitments		514			—			—			514
Balance at end of period	$	10,342		$	—		$	—		$	10,342

Schedule of Allowance for Loan Losses for Non-Covered Loans, by Loan Portfolio

A summary of changes in the allowance for credit losses for non-covered loans, by loan portfolio type, for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for loan losses
Balance at beginning of period	$	26,590		$	28,515		$	2,546		$	14,248		$	—	$	71,899
(Reversal of) Provision for loan losses		585			782			171			2,455			—		3,993
Transfer of balance to OREO		(108	)		(162	)		(253	)		—			—		(523	)
Loans charged off		(660	)		(668	)		(435	)		(3,617	)		—		(5,380	)
Recoveries		1,699			65			114			1,657			—		3,535
Balance at end of period	$	28,106		$	28,532		$	2,143		$	14,743		$	—	$	73,524
Reserve for unfunded commitments
Balance at beginning of period	$	3,089		$	4,839		$	72		$	3,147		$	—	$	11,147
(Reversal of) Provision for unfunded commitments		112			(43	)		4			40			—		113
Balance at end of period	$	3,201		$	4,796		$	76		$	3,187		$	—	$	11,260
Allowance on loans individually evaluated for impairment	$	—		$	31		$	171		$	—		$	—	$	202
Allowance on loans collectively evaluated for impairment		28,105			28,501			1,972			14,743			—		73,321
Loans, net of unearned income:
Balance at end of period	$	3,949,444		$	3,095,087		$	983,011		$	2,285,547		$	—	$	10,313,089
Balance at end of period individually evaluated for impairment		5,976			4,563			1,058			248			—		11,845
Balance at end of period collectively evaluated for impairment		3,943,468			3,090,524			981,953			2,285,299			—		10,301,244
Balance at end of period acquired with deteriorated credit quality		30,799			5,496			1,209			3,803			—		41,307

	June 30, 2013
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for credit losses
Balance at beginning of period	$	38,264		$	28,721		$	2,125		$	13,917		$	—	$	83,027
(Reversal of) Provision for loan losses		(7,459	)		557			2,961			2,347			—		(1,594	)
Transfer of balance to OREO		(264	)		(90	)		(612	)		(7	)		—		(973	)
Transfer of balance to the RULC		(2,939	)		(3,497	)		(40	)		(3,352	)		—		(9,828	)
Loans charged off		(807	)		(395	)		(2,603	)		(444	)		—		(4,249	)
Recoveries		500			259			188			1,103			—		2,050
Balance at end of period	$	27,295		$	25,555		$	2,019		$	13,564		$	—	$	68,433
Reserve for unfunded commitments
Balance at beginning of period	$	—		$	—		$	—		$	—		$	—	$	—
Transfer of balance from the allowance for loan losses		2,939			3,497			40			3,352					9,828
(Reversal of) Provision for unfunded commitments		545			12			—			(43	)				514
Balance at end of period	$	3,484		$	3,509		$	40		$	3,309		$	—	$	10,342
Allowance on loans individually evaluated for impairment	$	72		$	116		$	137		$	—		$	—	$	325
Allowance on loans collectively evaluated for impairment		27,223			25,439			1,882			13,564			—		68,108
Loans, net of unearned income:
Balance at end of period	$	3,224,078		$	2,618,963		$	350,842		$	1,790,939		$	—	$	7,984,822
Balance at end of period individually evaluated for impairment		16,525			14,014			1,152			267			—		31,958
Balance at end of period collectively evaluated for impairment		3,207,553			2,604,949			349,690			1,790,672			—		7,952,864
Balance at end of period acquired with deteriorated credit quality		40,015			3,468			383			3,287			—		47,153

Schedule of Allowance for Loan Losses for Covered Loans, by Loan Portfolio

A summary of changes in the allowance for credit losses for covered loans, by loan portfolio type, for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for loan losses
Balance at beginning of period	$	38,772		$	5,380		$	10,889		$	16,134		$	—	$	71,175
Provision for loan losses		1,474			313			592			479			—		2,858
(Decrease) Increase in FDIC loss share receivable		(2,121	)		749			(2,100	)		(126	)		—		(3,598	)
Transfer of balance to OREO		(1,857	)		(1,162	)		(534	)		(1,532	)		—		(5,085	)
Loans charged off		(3,726	)		(1,589	)		—			(78	)		—		(5,393	)
Recoveries		38			—			—			—			—		38
Balance at end of period	$	32,580		$	3,691		$	8,847		$	14,877		$	—	$	59,995
Allowance on loans individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—	$	—
Allowance on loans collectively evaluated for impairment		32,580			3,691			8,847			14,877			—		59,995
Loans, net of unearned income:
Balance at end of period	$	294,115		$	35,902		$	141,613		$	113,809		$	—	$	585,439
Balance at end of period individually evaluated for impairment		—			—			—			—			—		—
Balance at end of period collectively evaluated for impairment		294,115			35,902			141,613			113,809			—		585,439
Balance at end of period acquired with deteriorated credit quality		6,523			—			28,273			14,475			—		49,271

	June 30, 2013
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for credit losses
Balance at beginning of period	$	100,871		$	11,375		$	22,566		$	33,764		$	—	$	168,576
Provision for loan losses		27			—			(1	)		(1	)		—		25
(Decrease) Increase in FDIC loss share receivable		(26,737	)		(2,672	)		(7,073	)		(18,603	)		—		(55,085	)
Transfer of balance to OREO		(12,178	)		(314	)		(4,221	)		1			—		(16,712	)
Loans charged off		(2,334	)		—			—			—			—		(2,334	)
Balance at end of period	$	59,649		$	8,389		$	11,271		$	15,161		$	—	$	94,470
Allowance on loans individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—	$	—
Allowance on loans collectively evaluated for impairment		59,649			8,389			11,271			15,161			—		94,470
Loans, net of unearned income:
Balance at end of period	$	520,160		$	68,957		$	167,654		$	161,444		$	—	$	918,215
Balance at end of period individually evaluated for impairment		—			—			—			—			—		—
Balance at end of period collectively evaluated for impairment		520,160			68,957			167,654			161,444			—		918,215
Balance at end of period acquired with deteriorated credit quality		132,565			2,005			17,969			19,504			—		172,043

Investment in Covered Loans and Non-Covered Loans by Credit Quality Indicator

Credit quality information in the tables below include loans acquired at the gross loan balance, prior to the application of premiums/discounts, at June 30, 2014 and December 31, 2013.

	Non-covered loans excluding acquired loans
	June 30, 2014										December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Total		Pass		Special Mention		Substandard		Doubtful		Total
Commercial real estate construction	$	581,164	$	252	$	11,445	$	—	$	592,861	$	370,824	$	9,309	$	2,962	$	—	$	383,095
Commercial real estate – other		2,757,043		46,067		29,783		232		2,833,125		2,694,161		27,227		30,308		113		2,751,809
Commercial business		2,920,519		27,975		11,013		1,953		2,961,460		2,866,794		6,164		32,167		926		2,906,051
Total	$	6,258,726	$	74,294	$	52,241	$	2,185	$	6,387,446	$	5,931,779	$	42,700	$	65,437	$	1,039	$	6,040,955

	Non-covered loans excluding acquired loans
	June 30, 2014						December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Total		Current		30+ Days Past Due		Total
Residential prime	$	326,077	$	14,629	$	340,706	$	286,167	$	11,640	$	297,807
Residential subprime		115,835		3,111		118,946		114,939		1,626		116,565
Home equity		1,163,216		10,170		1,173,386		1,091,894		9,333		1,101,227
Indirect automobile		388,356		3,125		391,481		370,388		2,995		373,383
Credit card		63,871		1,389		65,260		62,873		769		63,642
Consumer – other		356,189		1,318		357,507		293,693		1,049		294,742
Total	$	2,413,544	$	33,742	$	2,447,286	$	2,219,954	$	27,412	$	2,247,366

Schedule of Investment in Impaired Loan

Information on the Company’s investment in impaired loans is presented in the following tables as of and for the periods indicated.

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance			Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate	$	5,146	$	5,146	$	—		$	8,567	$	8,567	$	—
Commercial business		4,291		4,291		—			13,256		13,256		—
Home equity		248		248		—			258		258		—
With an allowance recorded:
Commercial real estate		905		912		(7	)		1,268		1,284		(16	)
Commercial business		675		710		(35	)		1,927		2,770		(843	)
Residential prime		10,362		10,573		(211	)		9,791		10,019		(228	)
Residential subprime		3,097		3,111		(14	)		1,617		1,626		(9	)
Home equity		7,663		7,701		(38	)		6,506		6,550		(44	)
Indirect automobile		1,185		1,192		(7	)		1,267		1,275		(8	)
Credit card		931		949		(18	)		404		411		(7	)
Other		537		542		(5	)		481		485		(4	)
Total	$	35,040	$	35,375	$	(335	)	$	45,342	$	46,501		(1,159	)
Total commercial loans		11,017		11,059		(42	)		25,018		25,877		(859	)
Total mortgage loans		13,459		13,684		(225	)		11,408		11,645		(237	)
Total consumer loans		10,564		10,632		(68	)		8,916		8,979		(63	)

	For the Three Months Ended June 30								For the Six Months Ended June 30
	2014				2013				2014				2013
(Dollars in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate	$	5,228	$	6	$	21,452	$	24	$	5,178	$	14	$	22,871	$	63
Commercial business		5,128		9		10,942		17		5,006		22		6,891		73
Home equity		252		—		—		—		250		—		—		—
With an allowance recorded:
Commercial real estate		925				194		—		926		1		306		1
Commercial business		1,078		4		447		3		1,061		13		449		8
Residential prime		10,911		—		8,613		—		10,131		6		8,913		13
Residential subprime		3,139		—		—		—		3,127		—		—		—
Home equity		7,825		—		7,356		—		7,749		5		7,541		7
Indirect automobile		1,310		—		1,228		—		1,300		6		1,386		6
Credit card		750		—		448		—		560		—		427		—
Other		575		—		527		—		571		5		597		1
Total	$	37,121	$	19	$	51,207	$	44	$	35,859	$	72	$	49,381	$	172
Total commercial loans		12,359		19		33,035		44		12,171		50		30,517		145
Total mortgage loans		14,050		—		8,613		—		13,258		6		8,913		13
Total consumer loans		10,712		—		9,559		—		10,430		16		9,951		14

Covered Loans [Member]

Investment in Covered Loans and Non-Covered Loans by Credit Quality Indicator

Non-covered acquired loans
	June 30, 2014													December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Discount			Total		Pass		Special Mention		Substandard		Doubtful		Discount			Total
Commercial real estate construction	$	31,269	$	1,541	$	5,373	$	—	$	(2,536	)	$	35,647	$	17,132	$	196	$	5,435	$	—	$	(2,532	)	$	20,231
Commercial real estate – other		482,016		13,816		42,866		330		(51,217	)		487,811		310,303		15,351		51,267		93		(52,176	)		324,838
Commercial business		132,151		2,916		4,571		929		(6,941	)		133,626		51,414		1,920		2,586		31		(2,914	)		53,037
Total	$	645,436	$	18,273	$	52,810	$	1,259	$	(60,694	)	$	657,084	$	378,849	$	17,467	$	59,288	$	124	$	(57,622	)	$	398,106

	Non-covered acquired loans
	June 30, 2014									December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Premium (discount)			Total		Current		30+ Days Past Due		Premium (discount)			Total
Residential prime	$	508,678	$	8,412	$	6,269		$	523,359	$	18,796	$	226	$	(887	)	$	18,135
Home equity		180,703		10,549		(7,565	)		183,687		53,995		5,071		(5,623	)		53,443
Indirect automobile		850		87		(63	)		874		1,725		128		—			1,853
Consumer – other		122,011		3,495		(12,154	)		113,352		12,598		1,251		(1,481	)		12,368
Total	$	812,242	$	22,543	$	(13,513	)	$	821,272	$	87,114	$	6,676	$	(7,991	)	$	85,799

Acquired Loans [Member]

Investment in Covered Loans and Non-Covered Loans by Credit Quality Indicator

The Company’s investment in covered loans by credit quality indicator is presented in the following table. Loan premiums/discounts in the tables below represent the adjustment of covered loans to fair value at the date, as adjusted for income accretion and changes in cash flow estimates in subsequent periods.

	Covered loans
	June 30, 2014											December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Total			Pass		Special Mention		Substandard		Doubtful		Total
Commercial real estate construction	$	39,482	$	1,997	$	14,476	$	—	$	55,955		$	42,886	$	7,401	$	23,891	$	497	$	74,675
Commercial real estate – other		119,489		40,291		104,527		821		265,128			148,579		49,699		144,680		3,267		346,225
Commercial business		25,592		930		9,334		46		35,902			30,710		780		14,556		984		47,030
		$184,563	$	43,218	$	128,337	$	867	$	356,985		$	222,175	$	57,880	$	183,127	$	4,748	$	467,930
Discount										(26,968	)										(43,573	)
Total									$	330,017										$	424,357

	Covered loans
	June 30, 2014									December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Premium (discount)			Total		Current		30+ Days Past Due		Premium (discount)			Total
Residential prime	$	149,945	$	30,381	$	(38,713	)	$	141,613	$	158,710	$	30,814	$	(35,499	)	$	154,025
Home equity		124,113		16,489		(30,534	)		110,068		143,236		35,811		(41,925	)		137,122
Credit card		582		50		—			632		648		31		—			679
Consumer – other		316		71		2,721			3,108		591		144		2,875			3,610
Total	$	274,956	$	46,991	$	(66,526	)	$	255,421	$	303,185	$	66,800	$	(74,549	)	$	295,436

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Goodwill and Other Acquired Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Title plant assets	$ 6.7	$ 6.7

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Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2014

Compensation Expense Included in Non-Interest Expense and Related Income Tax Benefits

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 three-month and six-month periods ended June 30:

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands, except per share data)	2014		2013		2014		2013
Compensation expense related to stock options	$	518	$	533	$	1,037	$	1,066
Income tax benefit related to stock options		182		187		363		374
Impact on basic earnings per share		0.01		0.01		0.02		0.02
Impact on diluted earnings per share		0.01		0.01		0.02		0.02

Estimate Fair Value of Share-Based Awards with Weighted-Average Assumptions

The Company uses the Black-Scholes option pricing model to estimate the fair value of share-based awards. The following weighted-average assumptions were used for option awards outstanding during the six-month periods ended June 30:

	2014			2013
Expected dividends		2.1	%		2.6	%
Expected volatility		35.8	%		34.8	%
Risk-free interest rate		2.3	%		1.7	%
Expected term (in years)		7.5			8.6
Weighted-average grant-date fair value	$	21.23		$	15.37

Activity Related to Stock Options

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

	Number of shares			Weighted Average Exercise Price		Weighted Average Remaining Contract Life
Outstanding options, December 31, 2012		1,236,075		$	51.48
Granted		75,722			52.36
Exercised		(116,324	)		36.43
Forfeited or expired		(31,270	)		55.39
Outstanding options, June 30, 2013		1,164,203		$	52.94		4.9 Years
Exercisable options, June 30, 2013		774,446			52.73		3.4 Years
Outstanding options, December 31, 2013		1,072,829		$	53.47
Granted		75,956			65.23
Exercised		(196,734	)		47.98
Forfeited or expired		(8,577	)		64.82
Outstanding options, June 30, 2014		943,474		$	55.46		5.3 Years
Exercisable options, June 30, 2014		614,361			55.37		3.8 Years

Unvested Restricted Stock Award Activity

The following table represents unvested restricted stock award activity for the six months ended June 30:

	2014			2013
Balance at beginning of period		523,756			538,202
Granted		141,377			164,151
Forfeited		(9,631	)		(26,866	)
Earned and issued		(140,616	)		(123,328	)
Balance at end of period		514,886			552,159

Schedule of Share and Dividend Equivalent Share Award Activity

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

	Number of share equivalents			Dividend equivalents			Total share equivalents			Value of share equivalents (1)
Balance, December 31, 2012		318,729			16,035			334,764		$	16,444,000
Granted		163,498			5,899			169,397			9,081,000
Forfeited share equivalents		(15,121	)		(641	)		(15,762	)		(845,000	)
Vested share equivalents		(40,185	)		(2,876	)		(43,061	)		(2,156,000	)
Balance, June 30, 2013		426,921			18,417			445,338		$	23,875,000
Balance, December 31, 2013		417,238			22,351			439,589		$	27,628,000
Granted		105,043			4,626			109,669			7,588,000
Forfeited share equivalents		(12,656	)		(1,424	)		(14,080	)		(974,000	)
Vested share equivalents		(60,970	)		(5,724	)		(66,694	)		(4,451,000	)
Balance, June 30, 2014		448,655			19,829			468,484		$	32,414,000

⁽¹⁾  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 $69.19 and $53.61 on June 30, 2014 and 2013, respectively.

Phantom Stock Awards [Member]

Compensation Expense Included in Non-Interest Expense and Related Income Tax Benefits

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

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands)	2014		2013		2014		2013
Compensation expense related to phantom stock	$	1,022	$	1,112	$	3,073	$	1,811

Restricted Stock [Member]

Compensation Expense Included in Non-Interest Expense and Related Income Tax Benefits

The following table represents the compensation expense that was included in non-interest expense in the accompanying consolidated statements of comprehensive income related to restricted stock grants:

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands)	2014		2013		2014		2013
Compensation expense related to restricted stock	$	2,569	$	2,216	$	4,885	$	4,195

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Acquisition Activity - Schedule of Business Acquisitions, by Acquisition (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
As Acquired [Member] | Trust One-Memphis [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	$ 92,060
Loans	88,179
Other real estate owned	1,325
Core deposit intangible
Other assets	368
Total Assets	181,932
Interest-bearing deposits	164,942
Non-interest-bearing deposits	26,373
Deferred tax liability
Other liabilities	84
Total Liabilities	191,399
As Acquired [Member] | Teche [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	71,606
Investment securities	24,077
Loans	716,587
Other real estate owned	329
Core deposit intangible
Deferred tax asset (liability)	1,057
Other assets	56,708
Total Assets	870,364
Interest-bearing deposits	520,446
Non-interest-bearing deposits	118,256
Borrowings	134,228
Other liabilities	5,291
Total Liabilities	778,221
As Acquired [Member] | First Private [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	26,621
Investment securities	19,110
Loans	294,425
Other real estate owned
Core deposit intangible
Deferred tax asset (liability)	530
Other assets	5,230
Total Assets	345,916
Interest-bearing deposits	261,713
Non-interest-bearing deposits	50,333
Borrowings	6,451
Other liabilities	256
Total Liabilities	318,753
Preliminary Fair Value Adjustments [Member] | Trust One-Memphis [Member]
Business Acquisition [Line Items]
Cash and cash equivalents
Loans	(1,290)
Other real estate owned
Core deposit intangible	2,597
Other assets
Total Assets	1,307
Interest-bearing deposits
Non-interest-bearing deposits
Deferred tax liability	654
Other liabilities
Total Liabilities	654
Preliminary Fair Value Adjustments [Member] | Teche [Member]
Business Acquisition [Line Items]
Cash and cash equivalents
Investment securities	1,092
Loans	(16,637)
Other real estate owned
Core deposit intangible	2,055
Deferred tax asset (liability)	7,373
Other assets	(6,512)
Total Assets	(12,629)
Interest-bearing deposits	902
Non-interest-bearing deposits
Borrowings	6,304
Other liabilities
Total Liabilities	7,206
Preliminary Fair Value Adjustments [Member] | First Private [Member]
Business Acquisition [Line Items]
Cash and cash equivalents
Investment securities
Loans	4,207
Other real estate owned
Core deposit intangible	506
Deferred tax asset (liability)	(1,676)
Other assets
Total Assets	3,037
Interest-bearing deposits	220
Non-interest-bearing deposits
Borrowings
Other liabilities
Total Liabilities	220
As Recorded by IBERIABANK [Member] | Trust One-Memphis [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	92,060
Loans	86,889
Other real estate owned	1,325
Core deposit intangible	2,597
Other assets	368
Total Assets	183,239
Interest-bearing deposits	164,942
Non-interest-bearing deposits	26,373
Deferred tax liability	654
Other liabilities	84
Total Liabilities	192,053
As Recorded by IBERIABANK [Member] | Teche [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	71,606
Investment securities	25,169
Loans	699,950
Other real estate owned	329
Core deposit intangible	2,055
Deferred tax asset (liability)	8,430
Other assets	50,196
Total Assets	857,735
Interest-bearing deposits	521,348
Non-interest-bearing deposits	118,256
Borrowings	140,532
Other liabilities	5,291
Total Liabilities	785,427
As Recorded by IBERIABANK [Member] | First Private [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	26,621
Investment securities	19,110
Loans	298,632
Other real estate owned
Core deposit intangible	506
Deferred tax asset (liability)	(1,146)
Other assets	5,230
Total Assets	348,953
Interest-bearing deposits	261,933
Non-interest-bearing deposits	50,333
Borrowings	6,451
Other liabilities	256
Total Liabilities	$ 318,973

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Loans Receivable - Schedule of Modified TDRs (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Receivables [Abstract]
Extended maturities
Interest rate adjustment
Maturity and interest rate adjustment		1,545
Movement to or extension of interest-rate only payments
Forbearance
Other concession(s)
Total		$ 1,545

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets
Cash and due from banks	$ 286,615	$ 238,672
Interest-bearing deposits in banks	381,955	152,724
Total cash and cash equivalents	668,570	391,396
Securities available for sale, at fair value	2,008,953	1,936,797
Securities held to maturity (fair values of $134,063 and $152,566, respectively)	132,245	154,109
Mortgage loans held for sale ($178,380 and $97,273 recorded at fair value, respectively)	178,380	128,442
Loans covered by loss share agreements	585,439	719,793
Non-covered loans, net of unearned income	10,313,088	8,772,226
Total loans, net of unearned income	10,898,527	9,492,019
Allowance for loan losses	(133,519)	(143,074)
Loans, net	10,765,008	9,348,945
FDIC loss share receivables	120,532	162,312
Premises and equipment, net	307,090	287,510
Goodwill	524,154	401,872
Other assets	620,110	554,167
Total Assets	15,325,042	13,365,550
Liabilities
Non-interest-bearing	3,047,385	2,575,939
Interest-bearing	8,933,798	8,161,061
Total deposits	11,981,183	10,737,000
Short-term borrowings	1,034,741	680,344
Long-term debt	365,747	280,699
Other liabilities	144,065	136,528
Total Liabilities	13,525,736	11,834,571
Shareholders' Equity
Preferred stock, $1 par value - 5,000,000 shares authorized	0	0
Common stock, $1 par value - 50,000,000 shares authorized; 35,262,901 and 31,917,385 shares issued, respectively	35,263	31,917
Additional paid-in capital	1,391,097	1,178,284
Retained earnings	455,511	436,141
Accumulated other comprehensive income (loss)	4,693	(16,491)
Treasury stock at cost - 1,852,819 and 2,130,841 shares, respectively	(87,258)	(98,872)
Total Shareholders' Equity	1,799,306	1,530,979
Total Liabilities and Shareholders' Equity	$ 15,325,042	$ 13,365,550

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Basis of Presentation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule Of Significant Accounting Policies [Line Items]
Property write-downs	$ 0.6	$ 1.4	$ 1.4	$ 2.6
IBERIABANK Corporation [Member]
Schedule Of Significant Accounting Policies [Line Items]
Number of operating states	6		6
IMC [Member]
Schedule Of Significant Accounting Policies [Line Items]
Number of operating states	12		12

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Share-Based Compensation - Compensation Expense Included in Salaries and Employee Benefits Expense Related to Restricted Stock Grants (Detail) (Restricted Stock [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to restricted stock	$ 2,569	$ 2,216	$ 4,885	$ 4,195

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Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash dividends declared per share	$ 0.68	$ 0.68
Retained Earnings [Member]
Cash dividends declared per share	$ 0.68	$ 0.68

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Share-Based Compensation - Estimate Fair Value of Share-Based Awards with Weighted-Average Assumptions (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology [Abstract]
Expected dividends	2.10%	2.60%
Expected volatility	35.80%	34.80%
Risk-free interest rate	2.30%	1.70%
Expected term (in years)	7 years 6 months	8 years 7 months 6 days
Weighted-average grant-date fair value	$ 21.23	$ 15.37

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Investment Securities - Schedule of Securities with Gross Unrealized Losses Aggregated by Investment Category (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Net Investment Income [Line Items]
Securities available for sale, Less Than Twelve Months, Gross Unrealized Losses	$ (869)	$ (35,543)
Securities available for sale, Less Than Twelve Months, Estimated Fair Value	182,114	1,165,829
Securities available for sale, Over Twelve Months, Gross Unrealized Losses	(14,669)	(4,573)
Securities available for sale, Over Twelve Months, Estimated Fair Value	614,426	88,432
Securities available for sale, Gross Unrealized Losses, Total	(15,538)	(40,116)
Securities available for sale, Estimated Fair Value, Total	796,540	1,254,261
Securities held to maturity, Less Than Twelve Months, Gross Unrealized Losses		(2,133)
Securities held to maturity, Less Than Twelve Months, Estimated Fair Value	569	42,268
Securities held to maturity, Over Twelve Months, Gross Unrealized Losses	(1,461)	(1,615)
Securities held to maturity, Over Twelve Months, Estimated Fair Value	38,722	17,856
Securities held to maturity, Gross Unrealized Losses, Total	(1,461)	(3,748)
Securities held to maturity, Estimated Fair Value, Total	39,291	60,124
U.S. Government-Sponsored Enterprise Obligations [Member]
Net Investment Income [Line Items]
Securities available for sale, Less Than Twelve Months, Gross Unrealized Losses		(11,764)
Securities available for sale, Less Than Twelve Months, Estimated Fair Value		298,515
Securities available for sale, Over Twelve Months, Gross Unrealized Losses	(6,011)	(149)
Securities available for sale, Over Twelve Months, Estimated Fair Value	258,673	5,515
Securities available for sale, Gross Unrealized Losses, Total	(6,011)	(11,913)
Securities available for sale, Estimated Fair Value, Total	258,673	304,030
Obligations of State and Political Obligations [Member]
Net Investment Income [Line Items]
Securities available for sale, Less Than Twelve Months, Gross Unrealized Losses		(30)
Securities available for sale, Less Than Twelve Months, Estimated Fair Value		2,415
Securities available for sale, Over Twelve Months, Gross Unrealized Losses	(170)	(226)
Securities available for sale, Over Twelve Months, Estimated Fair Value	1,437	1,047
Securities available for sale, Gross Unrealized Losses, Total	(170)	(256)
Securities available for sale, Estimated Fair Value, Total	1,437	3,462
Securities held to maturity, Less Than Twelve Months, Gross Unrealized Losses		(1,181)
Securities held to maturity, Less Than Twelve Months, Estimated Fair Value	569	29,355
Securities held to maturity, Over Twelve Months, Gross Unrealized Losses	(324)	(443)
Securities held to maturity, Over Twelve Months, Estimated Fair Value	13,937	6,240
Securities held to maturity, Gross Unrealized Losses, Total	(324)	(1,624)
Securities held to maturity, Estimated Fair Value, Total	14,506	35,595
Mortgage-Backed Securities [Member]
Net Investment Income [Line Items]
Securities available for sale, Less Than Twelve Months, Gross Unrealized Losses	(869)	(23,749)
Securities available for sale, Less Than Twelve Months, Estimated Fair Value	182,114	864,899
Securities available for sale, Over Twelve Months, Gross Unrealized Losses	(8,488)	(4,198)
Securities available for sale, Over Twelve Months, Estimated Fair Value	354,316	81,870
Securities available for sale, Gross Unrealized Losses, Total	(9,357)	(27,947)
Securities available for sale, Estimated Fair Value, Total	536,430	946,769
Securities held to maturity, Less Than Twelve Months, Gross Unrealized Losses		(952)
Securities held to maturity, Less Than Twelve Months, Estimated Fair Value		12,913
Securities held to maturity, Over Twelve Months, Gross Unrealized Losses	(1,137)	(1,172)
Securities held to maturity, Over Twelve Months, Estimated Fair Value	24,785	11,616
Securities held to maturity, Gross Unrealized Losses, Total	(1,137)	(2,124)
Securities held to maturity, Estimated Fair Value, Total	$ 24,785	$ 24,529

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Share-Based Compensation - Schedule of Share and Dividend Equivalent Share Award Activity (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of share equivalents, Beginning Balance	417,238	318,729
Number of share equivalents, Granted	105,043	163,498
Number of share equivalents, Forfeited share equivalents	(12,656)	(15,121)
Number of share equivalents, Vested share equivalents	(60,970)	(40,185)
Number of share equivalents, Ending Balance	448,655	426,921
Dividend equivalents, Beginning Balance	22,351	16,035
Dividend equivalents, Granted	4,626	5,899
Dividend equivalents, Forfeited share equivalents	(1,424)	(641)
Dividend equivalents, Vested share equivalents	(5,724)	(2,876)
Dividend equivalents, Ending Balance	19,829	18,417
Total share equivalents, Beginning Balance	439,589	334,764
Total share equivalents, Granted	109,669	169,397
Total share equivalents, Forfeited share equivalents	(14,080)	(15,762)
Total share equivalents, Vested share equivalents	(66,694)	(43,061)
Total share equivalents, Ending Balance	468,484	445,338
Value of share equivalents, Beginning Balance	$ 27,628,000	$ 16,444,000
Value of share equivalents, Granted	7,588,000	9,081,000
Value of share equivalents, Forfeited share equivalents	(974,000)	(845,000)
Value of share equivalents, Vested share equivalents	(4,451,000)	(2,156,000)
Value of share equivalents, Ending Balance	$ 32,414,000	$ 23,875,000

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Goodwill and Other Acquired Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Carrying Amount of Goodwill

Changes to the carrying amount of goodwill by reportable segment for the six months ended June 30, 2014 and the year ended December 31, 2013 are provided in the following table.

(Dollars in thousands)	IBERIABANK		IMC		LTC		Total
Balance, December 31, 2012	$	373,905	$	23,178	$	4,789	$	401,872
Goodwill acquired during the year		—		—		—		—
Balance, December 31, 2013		373,905	$	23,178	$	4,789		401,872
Goodwill acquired during the period		121,906		—		376		122,282
Balance, June 30, 2014	$	495,811	$	23,178	$	5,165	$	524,154

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Loans Receivable - Additional Information (Detail) (USD $)	6 Months Ended		6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Troubled Debt Restructurings [Member]	Jun. 30, 2013 Troubled Debt Restructurings [Member]	Jun. 30, 2014 Trust One-Memphis [Member]	Jun. 30, 2014 Teche [Member]	Jun. 30, 2014 First Private [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred loan origination fees	$ 19,100,000	$ 18,600,000
Deferred loan expenses	8,400,000	7,600,000
Deposit liabilities reclassified as loans receivable	6,400,000	3,100,000
Loans with carrying value pledged to secure public deposits and other borrowings	2,400,000,000	2,300,000,000
Acquired loans					86,900,000	700,000,000	298,600,000
Carrying amounts of loans acquired	1,000,000,000
Maximum period for subject to change estimated fair values after acquisition date	1 year
Total TDRs			$ 0	$ 1,500,000

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Share-Based Compensation

6 Months Ended

Jun. 30, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Share-Based Compensation

NOTE 15 – SHARE-BASED COMPENSATION

The Company has various types of share-based compensation plans. These plans are administered by the Compensation Committee of the Board of Directors, which selects persons eligible to receive awards and determines the number of shares and/or options subject to each award, the terms, conditions and other provisions of the awards. During the six months ended June 30, 2014 and 2013, the Company did not have any equity awards that were settled in cash.

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 stock options granted were issued with vesting periods ranging from one-and-a half to seven years. At June 30, 2014, future option or restricted stock awards of 1,033,625 shares could be made under approved incentive compensation plans.

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 three-month and six-month periods ended June 30:

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands, except per share data)	2014		2013		2014		2013
Compensation expense related to stock options	$	518	$	533	$	1,037	$	1,066
Income tax benefit related to stock options		182		187		363		374
Impact on basic earnings per share		0.01		0.01		0.02		0.02
Impact on diluted earnings per share		0.01		0.01		0.02		0.02

The Company reported $0.9 million and $0.4 million of excess tax benefits as financing cash inflows during the six months ended June 30, 2014 and 2013, respectively, related to the exercise and vesting of stock options. Net cash proceeds from the exercise of stock options were $9.2 million and $4.2 million for the six months ended June 30, 2014 and 2013, respectively.

The Company uses the Black-Scholes option pricing model to estimate the fair value of share-based awards. The following weighted-average assumptions were used for option awards outstanding during the six-month periods ended June 30:

	2014			2013
Expected dividends		2.1	%		2.6	%
Expected volatility		35.8	%		34.8	%
Risk-free interest rate		2.3	%		1.7	%
Expected term (in years)		7.5			8.6
Weighted-average grant-date fair value	$	21.23		$	15.37

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.

At June 30, 2014, there was $4.2 million of unrecognized compensation cost related to stock options that is expected to be recognized over a weighted-average period of 5.3 years.

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

	Number of shares			Weighted Average Exercise Price		Weighted Average Remaining Contract Life
Outstanding options, December 31, 2012		1,236,075		$	51.48
Granted		75,722			52.36
Exercised		(116,324	)		36.43
Forfeited or expired		(31,270	)		55.39
Outstanding options, June 30, 2013		1,164,203		$	52.94		4.9 Years
Exercisable options, June 30, 2013		774,446			52.73		3.4 Years
Outstanding options, December 31, 2013		1,072,829		$	53.47
Granted		75,956			65.23
Exercised		(196,734	)		47.98
Forfeited or expired		(8,577	)		64.82
Outstanding options, June 30, 2014		943,474		$	55.46		5.3 Years
Exercisable options, June 30, 2014		614,361			55.37		3.8 Years

At June 30, 2014, the aggregate intrinsic value of shares underlying outstanding stock options and underlying exercisable stock options was $13.3 million and $8.9 million, respectively. Total intrinsic value of options exercised was $3.5 million and $1.6 million for the six months ended June 30, 2014 and 2013, respectively.

Restricted stock awards

The Company issues restricted stock under various plans for certain officers and directors. A supplemental stock benefit plan adopted in 1999 and the 2001, 2005, 2008, and 2010 Incentive Plans allow grants of restricted stock. The plans allow for the issuance of restricted stock awards that 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 fair value of the restricted stock shares awarded under these plans is recorded as unearned share-based compensation, a contra-equity account. The unearned compensation related to these awards is amortized to compensation expense over the vesting period (generally three to seven years). The total share-based 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 amortized over the vesting period. As of June 30, 2014 and 2013, unearned share-based compensation associated with these awards totaled $24.8 million and $25.4 million, respectively.

The following table represents the compensation expense that was included in non-interest expense in the accompanying consolidated statements of comprehensive income related to restricted stock grants:

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands)	2014		2013		2014		2013
Compensation expense related to restricted stock	$	2,569	$	2,216	$	4,885	$	4,195

The following table represents unvested restricted stock award activity for the six months ended June 30:

	2014			2013
Balance at beginning of period		523,756			538,202
Granted		141,377			164,151
Forfeited		(9,631	)		(26,866	)
Earned and issued		(140,616	)		(123,328	)
Balance at end of period		514,886			552,159

Phantom stock awards

As part of the 2008 Incentive Compensation Plan and 2009 Phantom Stock Plan, the Company issues phantom stock awards to certain key officers and employees. The award is subject to a vesting period of five to seven years and is 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. Award recipients are also entitled to a “dividend equivalent” on each unvested share equivalent held by the award recipient. A dividend equivalent is a dollar amount equal to the cash dividends that the participant would have been entitled to receive if the participant’s share equivalents were issued in shares of common stock. Dividend equivalents will be deemed to be reinvested as share equivalents that will vest and be paid out on the same date as the underlying share equivalents on which the dividend equivalents were paid. The number of share equivalents acquired with a dividend equivalent is determined by dividing the aggregate of dividend equivalents paid on the unvested share equivalents by the closing price of a share of the Company’s common stock on the dividend payment date.

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

	For the Three Months Ended June 30				For the Six Months Ended June 30
(Dollars in thousands)	2014		2013		2014		2013
Compensation expense related to phantom stock	$	1,022	$	1,112	$	3,073	$	1,811

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

	Number of share equivalents			Dividend equivalents			Total share equivalents			Value of share equivalents (1)
Balance, December 31, 2012		318,729			16,035			334,764		$	16,444,000
Granted		163,498			5,899			169,397			9,081,000
Forfeited share equivalents		(15,121	)		(641	)		(15,762	)		(845,000	)
Vested share equivalents		(40,185	)		(2,876	)		(43,061	)		(2,156,000	)
Balance, June 30, 2013		426,921			18,417			445,338		$	23,875,000
Balance, December 31, 2013		417,238			22,351			439,589		$	27,628,000
Granted		105,043			4,626			109,669			7,588,000
Forfeited share equivalents		(12,656	)		(1,424	)		(14,080	)		(974,000	)
Vested share equivalents		(60,970	)		(5,724	)		(66,694	)		(4,451,000	)
Balance, June 30, 2014		448,655			19,829			468,484		$	32,414,000

⁽¹⁾  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 $69.19 and $53.61 on June 30, 2014 and 2013, respectively.

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Other Real Estate Owned (Tables)

6 Months Ended

Jun. 30, 2014

Banking And Thrift [Abstract]

Schedule of Other Real Estate Owned Segregated Into Non-Covered and Covered Properties

Other real estate owned, segregated into non-covered and covered properties, consists of the following for the periods indicated. For further discussion of loss share coverage periods applicable to the covered foreclosed assets, see Note 8 to these consolidated financial statements.

	June 30, 2014						December 31, 2013
(Dollars in thousands)	Non-covered		Covered		Total		Non-covered		Covered		Total
Real estate owned acquired by foreclosure	$	25,135	$	39,571	$	64,706	$	28,072	$	60,474	$	88,546
Real estate acquired for development or resale		18,586		—		18,586		9,206		—		9,206
Other foreclosed property		216		971		1,187		93		1,328		1,421
Total	$	43,937	$	40,542	$	84,479	$	37,371	$	61,802	$	99,173

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Share-Based Compensation - Compensation Expense of Phantom Stock (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to stock options	$ 518	$ 533	$ 1,037	$ 1,066
Phantom Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to stock options	$ 1,022	$ 1,112	$ 3,073	$ 1,811

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Fair Value Measurements

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurements

NOTE 17 – FAIR VALUE MEASUREMENTS

Fair value option

The Company may elect the fair value option, which permits the Company to choose to measure eligible financial assets and liabilities at fair value at specified election dates and recognize prospective changes in unrealized gains and losses on items for which the fair value option has been elected in earnings at each reporting date.

Beginning in 2013, the Company has elected the fair value option for certain 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 following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for mortgage loans held for sale measured at fair value:

	June 30, 2014						December 31, 2013
(Dollars 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	$	178,380	$	170,527	$	7,853	$	97,273	$	96,875	$	398

Interest income on mortgage loans held for sale is recognized based on contractual rates and is reflected in interest income on loans held for sale in the consolidated statements of comprehensive income. Net gains resulting from the change in fair value of these loans that were recorded in mortgage income in the consolidated statement of comprehensive income for the three-month and six-month periods ended June 30, 2014 totaled $3.6 million and $5.6 million, respectively. There were no net gains or losses recorded in mortgage income for the corresponding periods ended June 30, 2013 resulting from the change in fair value of loans accounted for under the fair value option. The changes in fair value are mostly offset by economic hedging activities, with an immaterial portion of these changes attributable to changes in instrument-specific credit risk.

Items measured at fair value on a recurring basis

The Company has segregated all financial assets and liabilities that are measured at fair value on a recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to estimate the fair value at the measurement date in the tables below.

(Dollars in thousands)	June 30, 2014
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Available for sale securities	$	—	$	2,008,953	$	—	$	2,008,953
Mortgage loans held for sale		—		178,380		—		178,380
Derivative instruments		—		40,291		—		40,291
Total	$	—	$	2,227,624	$	—	$	2,227,624
Liabilities
Derivative instruments		—		37,568		—		37,568
Total	$	—	$	37,568	$	—	$	37,568
	December 31, 2013
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Available for sale securities	$	15,496	$	1,921,301	$	—	$	1,936,797
Mortgage loans held for sale		—		97,273		—		97,273
Derivative instruments		—		30,076		—		30,076
Total	$	15,496	$	2,048,650	$	—	$	2,064,146
Liabilities
Derivative instruments		—		26,735		—		26,735
Total	$	—	$	26,735	$	—	$	26,735

Available for sale securities with a market value of $15.1 million at June 30, 2014 were transferred from the Level 1 to Level 2 fair value category in the table above. The security was issued by Fannie Mae and was included in the Level 1 category at December 31, 2013 based on a recent trade price in the open market.

Gains and losses (realized and unrealized) included in earnings (or changes in net assets) during 2014 related to assets and liabilities measured at fair value on a recurring basis are reported in non-interest income or other comprehensive income as follows:

(Dollars in thousands)	Noninterest income		Other comprehensive income
Total gains (losses) included in earnings (or changes in net assets)	$	3,410	$	—
Change in unrealized gains (losses) relating to assets still held at June 30, 2014		—		21,184

Items measured at fair value on a non-recurring basis

The Company has segregated all financial assets and liabilities that are measured at fair value on a non-recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date in the tables below.

(Dollars in thousands)	June 30, 2014
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Loans	$	—	$	2,045	$	—	$	2,045
Mortgage loans held for sale		—		200		—		200
OREO		—		10,407		—		10,407
Total	$	—	$	12,452	$	—	$	12,452

(Dollars in thousands)	December 31, 2013
	(Level 1)		(Level 2)		(Level 3)		Total
Assets
Loans	$	—	$	3,070	$	—	$	3,070
Mortgage loans held for sale		—		11,876		—		11,876
OREO		—		14,598		—		14,598
Total	$	—	$	29,544	$	—	$	29,544

The tables above exclude the initial measurement of assets and liabilities that were acquired as part of the acquisitions completed in 2011 through 2014. These assets and liabilities were recorded at their fair value upon acquisition in accordance with U.S. GAAP and were not re-measured during the periods presented unless specifically required by U.S. GAAP. Acquisition date fair values represent either Level 2 fair value measurements (investment securities, OREO, property, equipment, and debt) or Level 3 fair value measurements (loans, deposits, and core deposit intangible asset).

In accordance with the provisions of ASC Topic 310-30, the Company records certain loans considered impaired at their estimated fair value. A loan is considered impaired if it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Fair value is measured at the estimated fair value of the collateral for collateral-dependent loans. Impaired non-covered loans with an outstanding balance of $2.2 million and $4.1 million were recorded at their fair value at June 30, 2014 and December 31, 2013, respectively. These loans include a reserve of $0.2 million and $1.0 million included in the Company’s allowance for credit losses at June 30, 2014 and December 31, 2013, respectively.

During the second quarter of 2013, the Company announced plans to close ten branches as part of its business strategy. In addition, during the second quarter of 2014, the Company closed 9 branches as part of its acquisition of Teche. The Company notified customers of these branches and received the required regulatory approvals to proceed with closure. The Company reviewed the carrying amount of the owned properties and concluded carrying amounts exceeded the fair value of certain branches at that date. Fair value of the branches was based on a third-party broker opinion of value using both a comparable sales and cash flow approach. The Company did not modify the third-party pricing information for unobservable inputs. As a result, the Company recorded impairment losses in other non-interest expense in its consolidated statements of comprehensive income for the year ended December 31, 2013 and the six months ended June 30, 2014. After the impairment losses, the carrying value of the branches was $3.9 million and $5.1 million at June 30, 2014 and December 31, 2013, respectively, and is included in OREO (as real estate acquired for development or resale) on the Company’s consolidated balance sheet.

The Company did not record any liabilities at fair value for which measurement of the fair value was made on a nonrecurring basis at June 30, 2014 and December 31, 2013.

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Loans Receivable - Schedule of Carrying Amount of Acquired Covered Loans (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans	$ 49,271	$ 66,077
Acquired Performing Loans	536,168	653,716
Balance at end of period	585,439	719,793
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans	6,523	14,904
Acquired Performing Loans	323,494	409,453
Balance at end of period	330,017	424,357
Commercial Loans [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans	6,523	14,904
Acquired Performing Loans	287,592	372,428
Balance at end of period	294,115	387,332
Commercial Loans [Member] | Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans
Acquired Performing Loans	35,902	37,025
Balance at end of period	35,902	37,025
Residential Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans	28,273	28,223
Acquired Performing Loans	113,340	125,802
Balance at end of period	141,613	154,025
Residential Mortgage Loans [Member] | Residential 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans	28,273	28,223
Acquired Performing Loans	113,340	125,802
Balance at end of period	141,613	154,025
Residential Mortgage Loans [Member] | Construction / Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans
Acquired Performing Loans
Balance at end of period
Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans	14,475	22,950
Acquired Performing Loans	99,334	118,461
Balance at end of period	113,809	141,411
Consumer and Other Loans [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans	13,879	21,768
Acquired Performing Loans	96,189	115,354
Balance at end of period	110,068	137,122
Consumer and Other Loans [Member] | Indirect Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans
Acquired Performing Loans
Balance at end of period
Consumer and Other Loans [Member] | Consumer - Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Impaired Loans	596	1,182
Acquired Performing Loans	3,145	3,107
Balance at end of period	$ 3,741	$ 4,289

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Fair Value of Financial Instruments - Additional Information (Detail)	6 Months Ended
	Mar. 30, 2014
Fair Value Disclosures [Abstract]
Short-term borrowings maturity period	90 days

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities
Net income	$ 40,943	$ 16,307
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,749	13,346
Amortization of purchase accounting adjustments, net	6,142	(10,879)
Provision for (Reversal of) loan losses	6,851	(1,569)
Share-based equity compensation expense	5,922	5,261
Gain on sale of assets	(16)	(49)
Gain on sale of available for sale investments	(27)	(2,261)
Gain on sale of OREO	(1,322)	(2,975)
Loss on abandonment of fixed assets		4,618
Impairment of FDIC loss share receivables	804	31,813
Amortization of premium/discount on investments	6,713	10,683
Derivative losses on swaps		(209)
(Benefit) provision for deferred income taxes	(6,817)	(12,198)
Originations of mortgage loans held for sale	(760,658)	(1,207,676)
Proceeds from sales of mortgage loans held for sale	730,129	1,350,910
Gain on sale of mortgage loans held for sale, net	(24,397)	(37,790)
Tax benefit associated with share-based payment arrangements	(945)	(417)
(Increase) decrease in other assets	(26,251)	732
Other operating activities, net	(780)	5,798
Net Cash (Used in) Provided by Operating Activities	(15,960)	163,445
Cash Flows from Investing Activities
Proceeds from sales of securities available for sale	14,050	44,675
Proceeds from maturities, prepayments and calls of securities available for sale	154,111	494,593
Purchases of securities available for sale	(169,807)	(760,640)
Proceeds from maturities, prepayments and calls of securities held to maturity	21,383	47,101
Purchases of securities held to maturity		(5,901)
Reimbursement of recoverable covered asset losses from the FDIC	1,319	49,582
Increase in loans receivable, net	(306,593)	(427,489)
Proceeds from sale of premises and equipment	6,474	639
Purchases of premises and equipment	(21,297)	(8,735)
Proceeds from disposition of real estate owned	43,376	44,082
Investment in new market tax credit entities	(5,809)
Cash received in excess of cash paid for acquisition	188,796
Other investing activities, net	(13,567)	11,400
Net Cash Used in Investing Activities	(87,564)	(510,693)
Cash Flows from Financing Activities
Increase (Decrease) in deposits, net of deposits acquired	101,223	(106,219)
Net change in short-term borrowings, net of borrowings acquired	299,296	(13,668)
Proceeds from long-term debt		2,230
Repayments of long-term debt	(6,666)	(141,296)
Dividends paid to shareholders	(20,341)	(20,122)
Proceeds from sale of treasury stock for stock options exercised	9,240	4,238
Payments to repurchase common stock	(2,999)	(1,744)
Common stock issued
Tax benefit associated with share-based payment arrangements	945	417
Net Cash Provided by (Used in) Financing Activities	380,698	(276,164)
Net Increase (Decrease) In Cash and Cash Equivalents	277,174	(623,412)
Cash and Cash Equivalents at Beginning of Period	391,396	970,977
Cash and Cash Equivalents at End of Period	668,570	347,565
Supplemental Schedule of Noncash Activities
Acquisition of real estate in settlement of loans	16,851	51,733
Transfers of property into Other Real Estate	27,074	51,733
Supplemental Disclosures Cash paid for:
Interest on deposits and borrowings	19,277	25,797
Income taxes, net	$ 39,306	$ 19,558

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Statement Of Financial Position [Abstract]
Securities held to maturity, fair values	$ 134,063	$ 152,566
Mortgage loans held for sale recorded at fair value	$ 178,380	$ 97,273
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	35,262,901	31,917,385
Treasury stock, shares	1,852,819	2,130,841

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Goodwill and Other Acquired Intangible Assets

6 Months Ended

Jun. 30, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Acquired Intangible Assets

NOTE 10 – GOODWILL AND OTHER ACQUIRED INTANGIBLE ASSETS

Goodwill

Changes to the carrying amount of goodwill by reportable segment for the six months ended June 30, 2014 and the year ended December 31, 2013 are provided in the following table.

(Dollars in thousands)	IBERIABANK		IMC		LTC		Total
Balance, December 31, 2012	$	373,905	$	23,178	$	4,789	$	401,872
Goodwill acquired during the year		—		—		—		—
Balance, December 31, 2013		373,905	$	23,178	$	4,789		401,872
Goodwill acquired during the period		121,906		—		376		122,282
Balance, June 30, 2014	$	495,811	$	23,178	$	5,165	$	524,154

The goodwill acquired during the six months ended June 30, 2014 was a result of the Trust One-Memphis, Teche, First Private, and The Title Company LLC acquisitions. See Note 4 for further information. Allocation of the goodwill acquired during the six months ended June 30, 2014 to reportable segments is preliminary and subject to change.

The Company performed the required annual goodwill impairment test as of October 1, 2013. The Company’s annual impairment test did not indicate impairment in any of the Company’s reporting units as of the testing date. Subsequent to the testing date, management has not become aware of any events or changes in circumstances that would indicate that goodwill might be impaired.

Title Plant

The Company held title plant assets totaling $6.7 million at both June 30, 2014 and December 31, 2013. No events or changes in circumstances occurred during 2014 or 2013 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 assets on the Company’s consolidated balance sheet as of the periods indicated:

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core deposit intangibles	$	50,564	$	(33,135	)	$	17,429	$	45,406	$	(30,784	)	$	14,622
Customer relationship intangible asset		1,398		(780	)		618		1,348		(631	)		717
Non-compete agreement		163		(25	)		138		—		—			—
Other intangible assets		255		(62	)		193		—		—			—
Total	$	52,380	$	(34,002	)	$	18,378	$	46,754	$	(31,415	)	$	15,339

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Fair Value Measurements - Summary of Difference Between the Aggregate Fair Value and the Aggregate Unpaid Principal Balance for Mortgage Loans Held for Sale (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Mortgage loans held for sale, at fair value, Aggregate Fair Value	$ 178,380	$ 97,273
Mortgage loans held for sale, at fair value, Aggregate Unpaid Principal	170,527	96,875
Mortgage loans held for sale, at fair value, Aggregate Fair Value Less Unpaid Principal	$ 7,853	$ 398

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Share-Based Compensation - Compensation Expense Included in Non-Interest Expense and Related Income Tax Benefits (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Compensation expense related to stock options	$ 518	$ 533	$ 1,037	$ 1,066
Income tax benefit related to stock options	$ 182	$ 187	$ 363	$ 374
Impact on basic earnings per share	$ 0.01	$ 0.01	$ 0.02	$ 0.02
Impact on diluted earnings per share	$ 0.01	$ 0.01	$ 0.02	$ 0.02

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Capital Requirements and Other Regulatory Matters - Actual Capital Amounts and Ratios (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Consolidated [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Leverage, Minimum Amount	$ 539,674	$ 507,760
Tier 1 risk-based capital, Minimum Amount	481,972	426,002
Total risk-based capital, Minimum Amount	963,943	852,005
Tier 1 Leverage capital, Minimum Ratio	4.00%	4.00%
Tier 1 risk-based capital, Minimum Ratio	4.00%	4.00%
Total risk-based capital, Minimum Ratio	8.00%	8.00%
Tier 1 Leverage, Actual Amount	1,353,676	1,231,886
Tier 1 risk-based capital, Actual Amount	1,353,676	1,231,886
Total risk-based capital, Actual Amount	1,498,467	1,365,280
Tier 1 Leverage, Actual Ratio	10.03%	9.70%
Tier 1 risk-based capital, Actual Ratio	11.23%	11.57%
Total risk-based capital, Actual Ratio	12.44%	12.82%
IBERIABANK [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Leverage, Minimum Amount	537,718	505,723
Tier 1 risk-based capital, Minimum Amount	480,157	424,578
Total risk-based capital, Minimum Amount	960,315	849,157
Tier 1 Leverage capital, Minimum Ratio	4.00%	4.00%
Tier 1 risk-based capital, Minimum Ratio	4.00%	4.00%
Total risk-based capital, Minimum Ratio	8.00%	8.00%
Tier 1 Leverage capital, Well Capitalized Amount	672,147	632,154
Tier 1 risk-based capital, Well Capitalized Amount	720,236	636,868
Total risk-based capital, Well Capitalized Amount	1,200,393	1,061,446
Tier 1 Leverage capital, Well Capitalized Ratio	5.00%	5.00%
Tier 1 risk-based capital, Well Capitalized Ratio	6.00%	6.00%
Total risk-based capital, Well Capitalized Ratio	10.00%	10.00%
Tier 1 Leverage, Actual Amount	1,196,630	1,069,783
Tier 1 risk-based capital, Actual Amount	1,196,630	1,069,783
Total risk-based capital, Actual Amount	$ 1,341,421	$ 1,202,738
Tier 1 Leverage, Actual Ratio	8.90%	8.46%
Tier 1 risk-based capital, Actual Ratio	9.97%	10.08%
Total risk-based capital, Actual Ratio	11.17%	11.33%

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Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Entity Registrant Name	IBERIABANK CORP
Entity Central Index Key	0000933141
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		33,419,918

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Other Real Estate Owned

6 Months Ended

Jun. 30, 2014

Banking And Thrift [Abstract]

Other Real Estate Owned

NOTE 11 – OTHER REAL ESTATE OWNED

Other real estate owned is included in Other assets on the Company’s consolidated balance sheet. Other real estate owned, segregated into non-covered and covered properties, consists of the following for the periods indicated. For further discussion of loss share coverage periods applicable to the covered foreclosed assets, see Note 8 to these consolidated financial statements.

	June 30, 2014						December 31, 2013
(Dollars in thousands)	Non-covered		Covered		Total		Non-covered		Covered		Total
Real estate owned acquired by foreclosure	$	25,135	$	39,571	$	64,706	$	28,072	$	60,474	$	88,546
Real estate acquired for development or resale		18,586		—		18,586		9,206		—		9,206
Other foreclosed property		216		971		1,187		93		1,328		1,421
Total	$	43,937	$	40,542	$	84,479	$	37,371	$	61,802	$	99,173

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Transfers and Servicing of Financial Assets (Including Mortgage Banking Activity) - Components of Mortgage Banking Activity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Participating Mortgage Loans [Line Items]
Balance at beginning of period			$ 128,442
Originations and purchases			(760,658)	(1,207,676)
Sales, net of gains			(730,129)	(1,350,910)
Balance at end of period	178,380		178,380
Gains on sales			24,397	37,790
Total mortgage income	17,957	17,708	28,089	36,639
Mortgage Loans Held for Sale [Member]
Participating Mortgage Loans [Line Items]
Balance at beginning of period			128,442	267,475
Originations and purchases			760,658	1,207,676
Sales, net of gains			(705,732)	(1,313,120)
Other			(4,988)
Balance at end of period	178,380	162,031	178,380	162,031
Mortgage Income [Member]
Participating Mortgage Loans [Line Items]
Fair value changes of derivatives and mortgage loans held for sale, net			3,383	(1,431)
Gains on sales			24,397	37,790
Servicing and other income, net			309	280
Total mortgage income			$ 28,089	$ 36,639

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Shareholders' Equity and Other Comprehensive Income (Loss) - Summary of Tax Effects of Each Component of Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Equity [Abstract]
Unrealized holding gains/losses arising during the period, Before-Tax Amount	$ 16,730	$ (42,303)	$ 32,618	$ (44,297)
Less: reclassification adjustment for losses/gains included in net income, Before-Tax Amount	(8)	66	(27)	(2,261)
Net unrealized losses/gains, Before-Tax Amount	16,722	(42,237)	32,591	(46,558)
Change in fair value of derivative instruments designated as cash flow hedges during the period, Before-Tax Amount		(1,121)		952
Less: reclassification adjustment for gains/losses included in net income, Before-Tax Amount		(33)		392
Fair value of derivative instruments designated as cash flow hedges, Before-Tax Amount		(1,154)		1,344
Total other comprehensive income/loss, Before-Tax Amount	16,722	(43,391)	32,591	(45,214)
Unrealized holding gains/losses arising during the period, Tax Expense (Benefit)	(5,856)	14,806	(11,416)	15,504
Less: reclassification adjustment for losses/gain included in net income, Tax Expense (Benefit)	3	(23)	9	791
Net unrealized gains/losses, Tax Expense (Benefit)	(5,853)	14,783	(11,407)	16,295
Change in fair value of derivative instruments designated as cash flow hedges during the period, Tax Expense (Benefit)		392		(333)
Less: reclassification adjustment for gains/losses included in net income, Tax Expense (Benefit)		12		(137)
Fair value of derivative instruments designated as cash flow hedges, Tax Expense (Benefit)		404		(470)
Total other comprehensive income/loss, Tax Expense (Benefit)	(5,853)	15,187	(11,407)	15,825
Unrealized holding gains/losses arising during the period, Net-of-Tax Amount	10,874	(27,497)	21,202	(28,793)
Less: reclassification adjustment for gains/losses included in net income, Net-of-Tax Amount	(5)	43	(18)	(1,470)
Net unrealized gains/losses, Net-of-Tax Amount	10,869	(27,454)	21,184	(30,263)
Change in fair value of derivative instruments designated as cash flow hedges during the period, Net-of-Tax Amount		(729)		619
Less: reclassification adjustment for gains/losses included in net income, Net-of-Tax Amount		(21)		255
Fair value of derivative instruments designated as cash flow hedges, Net-of-Tax Amount		(750)		874
Other comprehensive income (loss), net of tax	$ 10,869	$ (28,204)	$ 21,184	$ (29,389)

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Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest and Dividend Income
Loans, including fees	$ 123,124	$ 115,242	$ 244,278	$ 238,309
Mortgage loans held for sale, including fees	1,474	1,351	2,359	2,676
Investment securities:
Taxable interest	9,492	7,301	18,859	14,406
Tax-exempt interest	1,508	1,677	3,058	3,432
Amortization of FDIC loss share receivable	(17,009)	(18,130)	(36,273)	(45,831)
Other	631	736	1,170	1,601
Total interest and dividend income	119,220	108,177	233,451	214,593
Interest Expense
NOW and MMDA	4,123	4,614	8,307	10,021
Savings	83	74	147	167
Time deposits	3,089	4,372	6,026	9,026
Short-term borrowings	373	121	615	261
Long-term debt	2,573	2,514	4,970	5,764
Total interest expense	10,241	11,695	20,065	25,239
Net interest income	108,979	96,482	213,386	189,354
(Reversal of) Provision for loan losses	4,748	1,807	6,851	(1,569)
Net interest income after provision for loan losses	104,231	94,675	206,535	190,923
Non-interest Income
Service charges on deposit accounts	8,203	7,106	15,216	13,903
Mortgage income	17,957	17,708	28,089	36,639
Title revenue	5,262	5,696	9,429	10,717
ATM/debit card fee income	2,937	2,357	5,404	4,541
Income from bank owned life insurance	935	901	3,376	1,840
Gain (loss) on sale of available for sale investments	8	(66)	27	2,261
Derivative losses reclassified from other comprehensive income		33		(392)
Broker commissions	5,479	3,863	9,526	7,397
Other income	7,182	4,891	12,577	10,074
Total non-interest income	47,963	42,489	83,644	86,980
Non-interest Expense
Salaries and employee benefits	68,846	63,815	128,707	126,344
Net occupancy and equipment	16,104	14,283	30,094	29,478
Impairment of FDIC loss share receivables and other long-lived assets	1,109	4,618	1,441	36,431
Communication and delivery	3,464	3,116	6,231	6,387
Marketing and business development	3,412	3,049	6,262	6,136
Data processing	10,121	4,264	15,503	8,256
Amortization of acquisition intangibles	1,244	1,181	2,461	2,364
Professional services	5,560	5,101	9,308	9,519
Costs of OREO property, net	497	367	1,657	1,339
Credit and other loan related expense	3,093	4,135	6,639	7,858
Insurance	3,255	2,782	6,672	5,283
Travel and entertainment	2,126	2,019	4,456	4,287
Other expenses	8,544	8,631	15,371	18,577
Total non-interest expense	127,375	117,361	234,802	262,259
Income before income tax expense	24,819	19,803	55,377	15,644
Income tax expense (benefit)	6,271	4,213	14,434	(663)
Net Income	18,548	15,590	40,943	16,307
Income Available to Common Shareholders - Basic	18,548	15,590	40,943	16,307
Earnings Allocated to Unvested Restricted Stock	(298)	(293)	(699)	(313)
Earnings Available to Common Shareholders - Diluted	18,250	15,297	40,244	15,994
Earnings per common share - Basic	$ 0.60	$ 0.53	$ 1.35	$ 0.55
Earnings per common share - Diluted	$ 0.60	$ 0.53	$ 1.35	$ 0.55
Cash dividends declared per common share	$ 0.34	$ 0.34	$ 0.68	$ 0.68
Unrealized gains on securities:
Unrealized holding gains (losses) arising during the period	16,730	(42,303)	32,618	(44,297)
Less: reclassification adjustment for (gains) losses included in net income	(8)	66	(27)	(2,261)
Net unrealized losses/gains, Before-Tax Amount	16,722	(42,237)	32,591	(46,558)
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		(1,121)		952
Less: reclassification adjustment for losses (gains) included in net income		(33)		392
Fair value of derivative instruments designated as cash flow hedges, before tax		(1,154)		1,344
Other comprehensive income (loss), before tax	16,722	(43,391)	32,591	(45,214)
Income tax expense (benefit) related to items of other comprehensive (loss) income	5,853	(15,187)	11,407	(15,825)
Other comprehensive income (loss), net of tax	10,869	(28,204)	21,184	(29,389)
Comprehensive income (loss)	$ 29,417	$ (12,614)	$ 62,127	$ (13,082)

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Investment Securities

6 Months Ended

Jun. 30, 2014

Investments Debt And Equity Securities [Abstract]

Investment Securities

NOTE 5 – INVESTMENT SECURITIES

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

	June 30, 2014
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	371,703	$	1,702	$	(6,011	)	$	367,394
Obligations of state and political obligations		98,833		3,944		(170	)		102,607
Mortgage-backed securities		1,530,366		16,456		(9,357	)		1,537,465
Other securities		1,460		27		—			1,487
Total securities available for sale	$	2,002,362	$	22,129	$	(15,538	)	$	2,008,953
Securities held to maturity:
U.S. Government-sponsored enterprise obligations	$	17,499	$	214	$	—		$	17,713
Obligations of state and political obligations		82,073		2,831		(324	)		84,580
Mortgage-backed securities		32,673		234		(1,137	)		31,770
Total securities held to maturity	$	132,245	$	3,279	$	(1,461	)	$	134,063

	December 31, 2013
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	406,092	$	1,382	$	(11,913	)	$	395,561
Obligations of state and political obligations		105,300		2,435		(256	)		107,479
Mortgage-backed securities		1,450,194		10,031		(27,947	)		1,432,278
Other securities		1,460		19		—			1,479
Total securities available for sale	$	1,963,046	$	13,867	$	(40,116	)	$	1,936,797
Securities held to maturity:
U.S. Government-sponsored enterprise obligations	$	34,478	$	484	$	—		$	34,962
Obligations of state and political obligations		84,290		1,463		(1,624	)		84,129
Mortgage-backed securities		35,341		258		(2,124	)		33,475
Total securities held to maturity	$	154,109	$	2,205	$	(3,748	)	$	152,566

Securities with carrying values of $1.5 billion were pledged to secure public deposits and other borrowings at both June 30, 2014 and December 31, 2013.

Management evaluates securities for other-than-temporary impairment at least quarterly, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to 1) the length of time and extent to which the estimated fair value has been less than amortized cost, 2) the financial condition and near-term prospects of the issuer, and 3) the intent of the Company to retain the investment for a period of time sufficient to allow for any anticipated recovery in estimated fair value above amortized cost. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies and whether downgrades by bond rating agencies have occurred, as well as review of issuer financial statements and industry analysts’ reports.

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, is as follows:

	June 30, 2014
	Less Than Twelve Months					Over Twelve Months					Total
(Dollars in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	—		$	—	$	(6,011	)	$	258,673	$	(6,011	)	$	258,673
Obligations of state and political obligations		—			—		(170	)		1,437		(170	)		1,437
Mortgage-backed securities		(869	)		182,114		(8,488	)		354,316		(9,357	)		536,430
Total securities available for sale	$	(869	)	$	182,114	$	(14,669	)	$	614,426	$	(15,538	)	$	796,540
Securities held to maturity:
Obligations of state and political obligations	$	—		$	569	$	(324	)	$	13,937	$	(324	)	$	14,506
Mortgage-backed securities		—			—		(1,137	)		24,785		(1,137	)		24,785
Total securities held to maturity	$	—		$	569	$	(1,461	)	$	38,722	$	(1,461	)	$	39,291

	December 31, 2013
	Less Than Twelve Months					Over Twelve Months					Total
(Dollars in thousands)	Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value
Securities available for sale:
U.S. Government-sponsored enterprise obligations	$	(11,764	)	$	298,515	$	(149	)	$	5,515	$	(11,913	)	$	304,030
Obligations of state and political obligations		(30	)		2,415		(226	)		1,047		(256	)		3,462
Mortgage-backed securities		(23,749	)		864,899		(4,198	)		81,870		(27,947	)		946,769
Total securities available for sale	$	(35,543	)	$	1,165,829	$	(4,573	)	$	88,432	$	(40,116	)	$	1,254,261
Securities held to maturity:
Obligations of state and political obligations	$	(1,181	)	$	29,355	$	(443	)	$	6,240	$	(1,624	)	$	35,595
Mortgage-backed securities		(952	)		12,913		(1,172	)		11,616		(2,124	)		24,529
Total securities held to maturity	$	(2,133	)	$	42,268	$	(1,615	)	$	17,856	$	(3,748	)	$	60,124

The Company assessed the nature of the losses in its portfolio as of June 30, 2014 and December, 31, 2013 to determine if there are losses that should be deemed other-than-temporary. In its analysis of these securities, management considered numerous factors to determine whether there were instances where the amortized cost basis of the debt securities would not be fully recoverable, including, but not limited to:

• The length of time and extent to which the estimated fair value of the securities was less than their amortized cost,

• Whether adverse conditions were present in the operations, geographic area, or industry of the issuer,

• The payment structure of the security, including scheduled interest and principal payments, including the issuer’s failures to make scheduled payments, if any, and the likelihood of failure to make scheduled payments in the future,

• Changes to the rating of the security by a rating agency, and

• Subsequent recoveries or additional declines in fair value after the balance sheet date.

Management believes it has considered these factors, as well as all relevant information available, when determining the expected future cash flows of the securities in question. Except for the bond discussed below, in each instance, management has determined the cost basis of the securities would be fully recoverable. Management also has the intent to hold debt securities until their maturity or anticipated recovery if the security is classified as available for sale. In addition, management does not believe the Company will be required to sell debt securities before the anticipated recovery of the amortized cost basis of the security.

At June 30, 2014, 113 debt securities had unrealized losses of 1.99% of the securities’ amortized cost basis and 0.80% of the Company’s total amortized cost basis. At December 31, 2013, 207 debt securities had unrealized losses of 3.23% of the securities’ amortized cost basis and 2.07% of the Company’s total amortized cost basis. The unrealized losses for each of the securities related to market interest rate changes. Additional information on securities that have been in a continuous loss position for over twelve months at June 30, 2014 and December 31, 2013 is presented in the following table.

(Dollars in thousands)	June 30, 2014		December 31, 2013
Number of securities
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae		80		20
Issued by political subdivisions		11		5
		91		25
Amortized Cost Basis
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae	$	653,411	$	104,520
Issued by political subdivisions		15,867		7,956
	$	669,278	$	112,476
Unrealized Loss
Issued by Fannie Mae, Freddie Mac, or Ginnie Mae	$	15,636	$	5,519
Issued by political subdivisions		494		669
	$	16,130	$	6,188

The Fannie Mae, Freddie Mac, and Ginnie Mae securities are rated AA+ by S&P and Aaa by Moodys. Eleven of the securities in a continuous loss position for over twelve months were issued by political subdivisions. Ten of the securities issued by political subdivisions have credit ratings by S&P ranging from A+ to AAA and credit ratings from Moody’s ranging from A2 to Aaa. The remaining security in a continuous unrealized loss position for over twelve months was issued by a political subdivision and is discussed in further detail below.

Prior to 2013, management assessed the operating environment of a bond issuer as adverse and concluded that the Company had one unrated revenue municipal bond that warranted an other-than-temporary impairment charge. The specific impairment was related to the loss of the contracted revenue source required for bond repayment. The Company determined the impairment charge using observable market data for similar assets, including third party valuation of the security, as well as information from unobservable inputs, including its best estimate of the recoverability of the amortized cost of the security as outlined above. Changes to the unobservable inputs used by the Company would have resulted in a higher or lower impairment charge, but the unobservable inputs were not highly sensitive and would not result in a material difference in the impairment charge recorded. The Company recorded total impairment of 50% of the par value of the bond and provided a fair value of the bonds that was consistent with current market pricing. During 2014, the Company continued to analyze the operating environment of the bond as it did in prior periods and noted no further deterioration in the operating environment of the bond issuer.

During the six months ended June 30, 2014 and 2013, there was no activity related to credit losses on the other-than temporarily impaired investment security where a portion of the unrealized loss was recognized in other comprehensive income.

As a result of the Company’s analysis, no other declines in the estimated fair value of the Company’s investment securities were deemed to be other-than-temporary at June 30, 2014 or December 31, 2013.

The amortized cost and estimated fair value of investment securities by maturity at June 30, 2014 are shown 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
(Dollars in thousands)	Weighted Average Yield			Amortized Cost		Estimated Fair Value		Weighted Average Yield			Amortized Cost		Estimated Fair Value
Within one year or less		2.00	%	$	16,390	$	16,445		2.11	%	$	17,499	$	17,713
One through five years		1.55			262,494		263,033		3.24			13,510		13,867
After five through ten years		2.10			504,532		508,167		2.92			20,495		21,200
Over ten years		2.20			1,218,946		1,221,308		3.10			80,741		81,283
Total		2.09	%	$	2,002,362	$	2,008,953		2.95	%	$	132,245	$	134,063

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 June 30					Six Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013
Realized gains	$	8	$	4		$	27	$	2,369
Realized losses		—		(70	)		—		(108	)
Net realized gains (losses)	$	8	$	(66	)	$	27	$	2,261

In addition to the gains above, the Company realized certain immaterial gains on calls of held to maturity securities.

Other Equity Securities

At June 30, 2014 and December 31, 2013, the Company included the following securities in “Other assets” on the consolidated balance sheets:

(Dollars in thousands)	June 30 2014		December 31 2013
Federal Home Loan Bank (FHLB) stock	$	44,715	$	24,369
Federal Reserve Bank (FRB) stock		28,098		28,098
Other investments		3,306		1,306
Total	$	76,119	$	53,773

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Acquisition Activity

6 Months Ended

Jun. 30, 2014

Business Combinations [Abstract]

Acquisition Activity

NOTE 4 – ACQUISITION ACTIVITY

Acquisition of Certain Assets and Liabilities of Trust One Bank

On January 17, 2014, IBERIABANK acquired certain assets and assumed certain liabilities of the Memphis, Tennessee operations of Trust One Bank, a division of Synovus Bank (hereby referred to as “Trust One-Memphis”). Under terms of the agreement, Synovus Bank paid IBERIABANK $91.6 million in cash to acquire four Trust One-Memphis branches in the Memphis, Tennessee market, which resulted in goodwill of $8.4 million. With this acquisition, IBERIABANK expanded its presence in the Memphis, Tennessee Metropolitan Statistical Area (“MSA”) through the addition of four branches and an experienced in-market team that enhances IBERIABANK’s ability to compete in that market.

Acquisition of Teche Holding Company

On May 31, 2014, the Company acquired Teche Holding Company (“Teche”), the holding company of Teche Federal Bank, a New Iberia, Louisiana-based commercial bank servicing south Louisiana. Under terms of the agreement, for each share of Teche stock outstanding, Teche shareholders received 1.162 shares of the Company’s common stock, as well as a cash payment for any fractional share and unexercised option to purchase Teche stock. The Company acquired all of the outstanding common stock of the former Teche shareholders for total consideration of $156.7 million, which resulted in goodwill of $84.4 million, as shown in the table below. With this acquisition, IBERIABANK expanded its presence in the Acadiana region of Louisiana through the addition of 20 branches and an experienced in-market team that enhances IBERIABANK’s ability to compete in that market. The Company projects cost savings will be recognized in future periods through the elimination of redundant operations. The following summarizes consideration paid and a preliminary allocation of purchase price to net assets acquired.

(Dollars in thousands)	Number of Shares		Amount
Equity consideration
Common stock issued		2,498,007	$	156,026
Total equity consideration				156,026
Non-Equity consideration
Cash				714
Total consideration paid				156,740
Fair value of net assets assumed including identifiable intangible assets				72,308
Goodwill			$	84,432

Acquisition of First Private Holdings, Inc.

On June 30, 2014, the Company acquired First Private Holdings, Inc. (“First Private”), the holding company of First Private Bank of Texas, a Dallas, Texas-based commercial bank with four branch locations, including two mobile branches. Under terms of the agreement, for each share of First Private stock outstanding, First Private shareholders received 0.27 of a share of the Company’s common stock, as well as a cash payment for any fractional share. The Company acquired all of the outstanding common stock of the former First Private shareholders for total consideration of $58.6 million, which resulted in goodwill of $28.7 million, as shown in the table below. With this acquisition, IBERIABANK expanded its presence into the Dallas, Texas MSA through the addition of branches and an experienced in-market team. The Company projects cost savings will be recognized in future periods through the elimination of redundant operations. The following summarizes consideration paid and a preliminary allocation of purchase price to net assets acquired.

(Dollars in thousands)	Number of Shares		Amount
Equity consideration
Common stock issued		847,509	$	58,639
Total equity consideration				58,639
Non-Equity consideration
Cash				1
Total consideration paid				58,640
Fair value of net liabilities assumed including identifiable intangible assets				29,980
Goodwill			$	28,660

The Company accounted for the aforementioned business combinations as purchase business combinations. Accordingly, the purchase price is allocated to the fair value of the assets acquired and liabilities assumed as of the date of acquisition. The following purchase price allocations on these acquisitions are preliminary and will be finalized upon the receipt of final valuations on certain assets and liabilities. Upon receipt of final fair value estimates, which must be within one year of the acquisition dates, the Company will make any final adjustments to the purchase price allocation and retrospectively adjust any goodwill recorded. Material adjustments to acquisition date estimated fair values would be recorded in the period in which the acquisition occurred, and as a result, previously reported results are subject to change. Net assets acquired subject to finalization of fair value estimates include, but are not limited to, loans and core deposit intangibles and any related adjustments to deferred taxes associated with these fair value adjustments. Determining the fair value of assets and liabilities, particularly illiquid assets and liabilities, is a complicated process involving significant judgment regarding estimates and assumptions used to calculate estimated fair value. Fair value adjustments based on updated estimates could materially affect the goodwill recorded on the acquisition. The Company may incur losses on the acquired loans that are materially different from losses the Company originally projected.

The acquired assets and liabilities, as well as the preliminary adjustments to record the assets and liabilities at their estimated fair values, are presented in the following table.

Trust One-Memphis

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	92,060	$	—		$	92,060
Loans		88,179		(1,290	)(1)		86,889
Other real estate owned		1,325		—			1,325
Core deposit intangible		—		2,597	(2)		2,597
Other assets		368		—			368
Total Assets	$	181,932	$	1,307		$	183,239
Liabilities
Interest-bearing deposits	$	164,942	$	—		$	164,942
Non-interest-bearing deposits		26,373		—			26,373
Deferred tax liability		—		654	(3)		654
Other liabilities		84		—			84
Total Liabilities	$	191,399	$	654		$	192,053

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment of the book value of Trust One-Memphis loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽²⁾  The amount represents the estimated fair value of the core deposit intangible asset created in the acquisition.

⁽³⁾  The amount represents the deferred tax liability recognized on the fair value adjustment of Trust One-Memphis acquired assets and assumed liabilities.

Teche

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	71,606	$	—		$	71,606
Investment securities		24,077		1,092	(1)		25,169
Loans		716,587		(16,637	)(2)		699,950
Other real estate owned		329		—			329
Core deposit intangible		—		2,055	(3)		2,055
Deferred tax asset		1,057		7,373	(4)		8,430
Other assets		56,708		(6,512	)(5)		50,196
Total Assets	$	870,364	$	(12,629	)	$	857,735
Liabilities
Interest-bearing deposits	$	520,446	$	902	(6)	$	521,348
Non-interest-bearing deposits		118,256		—			118,256
Borrowings		134,228		6,304	(7)		140,532
Other liabilities		5,291		—			5,291
Total Liabilities	$	778,221	$	7,206		$	785,427

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment to the book value of Teche’s investments to their estimated fair value based on fair values on the date of acquisition.

⁽²⁾  The amount represents the adjustment of the book value of Teche loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽³⁾  The amount represents the estimated fair value of the core deposit intangible asset created in the acquisition.

⁽⁴⁾  The amount represents the deferred tax asset recognized on the fair value adjustment of Teche acquired assets and assumed liabilities.

⁽⁵⁾  The amount represents the write down of the book value of Teche’s property, equipment, and other assets to their estimated fair value at the acquisition date.

⁽⁶⁾  The adjustment is necessary because the weighted average interest rate of Teche’s deposits exceeded the cost of similar funding at the time of acquisition. The fair value adjustment will be amortized to reduce future interest expense over the life of the portfolio, which is estimated at 85 months.

⁽⁷⁾  The amount represents the estimated fair value adjustment for the debt assumed, primarily driven by the estimated market interest rate on the debt relative to the stated interest rate.

First Private

(Dollars in thousands)	As Acquired		Preliminary Fair Value Adjustments			As recorded by IBERIABANK
Assets
Cash and cash equivalents	$	26,621	$	—		$	26,621
Investment securities		19,110		—			19,110
Loans		294,425		4,207	(1)		298,632
Other real estate owned		—		—			—
Core deposit intangible		—		506	(2)		506
Deferred tax asset (liability)		530		(1,676	) (3)		(1,146	)
Other assets		5,230		—			5,230
Total Assets	$	345,916	$	3,037		$	348,953
Liabilities
Interest-bearing deposits	$	261,713	$	220	(4)	$	261,933
Non-interest-bearing deposits		50,333		—			50,333
Borrowings		6,451		—			6,451
Other liabilities		256		—			256
Total Liabilities	$	318,753	$	220		$	318,973

Explanation of certain fair value adjustments

⁽¹⁾  The amount represents the adjustment of the book value of First Private loans to their estimated fair value based on current interest rates and expected cash flows which includes estimates of expected credit losses inherent in the portfolio.

⁽²⁾  The amount represents the fair value of the core deposit intangible asset created in the acquisition.

⁽³⁾  The amount represents the deferred tax liability recognized on the fair value adjustment of First Private acquired assets and assumed liabilities.

⁽⁴⁾  The adjustment is necessary because the weighted average interest rate of First Private’s deposits exceeded the cost of similar funding at the time of acquisition.

Acquisition of The Title Company LLC

On February 24, 2014, the Company’s subsidiary, LTC, acquired The Title Company LLC. Under terms of the agreement, LTC paid $0.4 million in cash to acquire a title office in Baton Rouge, Louisiana, which resulted in goodwill of $0.2 million. The acquisition was accounted for under the purchase method of accounting in accordance with ASC Topic 805. Purchased assets were recorded at their acquisition date fair values. Identifiable intangible assets were recorded at fair value. Because the consideration paid was greater than the net fair value of the acquired assets, the Company recorded goodwill as part of the acquisition. The goodwill recognized was the result of LTC’s expanded presence into the Baton Rouge, Louisiana MSA and an experienced in-market team that enhances its ability to compete in that market. As part of the acquisition, LTC also acquired or created the following other assets:

(Dollars in thousands)	Amount
Non-compete agreement	$	63
Title plant		14
Other intangible assets		75
Other assets		2
Total Assets	$	154

Acquisition of Louisiana Abstract and Title, LLC

On May 1, 2014, LTC acquired Louisiana Abstract and Title, LLC. Under terms of the agreement, LTC paid $0.2 million in cash to acquire a title office in Baton Rouge, Louisiana, which resulted in goodwill of $0.2 million. In addition, the agreement provides for potential additional cash consideration based on earnings over a four-year period after the acquisition. The acquisition was accounted for under the purchase method of accounting in accordance with ASC Topic 805. Purchased assets were recorded at their acquisition date fair values. Identifiable intangible assets were recorded at fair value. Because the consideration paid was greater than the net fair value of the acquired assets, the Company recorded goodwill as part of the acquisition. The goodwill recognized was the result of LTC’s expanded presence in the Shreveport, Louisiana MSA and an experienced in-market team that enhances its ability to compete in that market. As part of the acquisition, LTC also acquired or created the following other assets:

(Dollars in thousands)	Amount
Non-compete agreement	$	100
Title plant		9
Other intangible assets		130
Other assets		6
Total Assets	$	245

Supplemental unaudited pro forma information

The following unaudited pro forma information for the six months ended June 30, 2013 reflects the Company’s estimated consolidated results of operations as if the acquisitions of Trust One-Memphis, Teche, and First Private occurred at January 1, 2013, unadjusted for potential cost savings and preliminary purchase price adjustments.

(Dollars in thousands, except per share data)	2013
Interest and non-interest income	$	332,674
Net income		20,022
Earnings per share – basic		0.68
Earnings per share – diluted		0.68

The Company’s consolidated financial statements as of and for the six months ended June 30, 2014 include the operating results of the acquired assets and assumed liabilities for the days subsequent to the respective acquisition dates. Due to the system conversion of the acquired entities throughout the current six-month period and subsequent integration of the operating activities of the acquired branches into existing Company markets, historical reporting for the former Trust One-Memphis, Teche, and First Private branches is impracticable and thus disclosure of the revenue from the assets acquired and income before income taxes is impracticable for the period subsequent to acquisition.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2014

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

NOTE 16 – COMMITMENTS AND CONTINGENCIES

Off-balance sheet commitments

The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby 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 nonperformance by other parties represents the contractual amount of the financial instruments. At June 30, 2014, and December 31, 2013, the fair value of guarantees under commercial and standby letters of credit was $1.2 million and $1.1 million, respectively. This amount represents the unamortized fee associated with these guarantees and is included in the consolidated balance sheets of the Company. This fair value will decrease as the existing commercial and standby letters of credit approach their expiration dates.

At June 30, 2014 and December 31, 2013, the Company had the following financial instruments outstanding, whose contract amounts represent credit risk:

(Dollars in thousands)	June 30 2014		December 31 2013
Commitments to grant loans	$	334,186	$	221,627
Unfunded commitments under lines of credit		3,534,055		3,326,448
Commercial and standby letters of credit		124,870		105,026
Reserve for unfunded lending commitments		11,260		11,147

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. 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 counterparty.

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 7 for additional discussion related to the Company’s 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 or credit is essentially the same as that involved in extending loan facilities to customers and as such, are collateralized when necessary, 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, all of 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, and certain of these claims will be covered by loss sharing agreements with the FDIC. The Company has asserted defenses to these litigations 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.

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, advice of counsel and available insurance coverage, the Company’s management believes that it has established appropriate legal reserves. Any 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, in the event of unexpected future developments, 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 it is reasonably possible to incur above amounts already accrued is immaterial.

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Derivative Instruments and Other Hedging Activities

6 Months Ended

Jun. 30, 2014

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments and Other Hedging Activities

NOTE 12 – DERIVATIVE INSTRUMENTS AND OTHER HEDGING ACTIVITIES

Information pertaining to outstanding derivative instruments is as follows:

(Dollars in thousands)	Balance Sheet Location		Asset Derivatives Fair Value				Balance Sheet Location		Liability Derivatives Fair Value
			June 30, 2014		December 31, 2013				June 30, 2014		December 31, 2013
Derivatives not designated as hedging instruments under ASC Topic 815:
Interest rate contracts		Other assets	$	14,653	$	10,621		Other liabilities	$	14,653	$	10,620
Forward sales contracts		Other assets		2,414		1,468		Other liabilities		4,163		287
Written and purchased options		Other assets		23,224		17,987		Other liabilities		18,752		15,828
Total derivatives not designated as hedging instruments under ASC Topic 815				40,291		30,076				37,568		26,735
Total			$	40,291	$	30,076			$	37,568	$	26,735
			Asset Derivatives Notional Amount						Liability Derivatives Notional Amount
(Dollars in thousands)			June 30, 2014		December 31, 2013				June 30, 2014		December 31, 2013
Derivatives not designated as hedging instruments under ASC Topic 815:
Interest rate contracts			$	493,924	$	380,303			$	493,924	$	380,303
Forward sales contracts				3,123		192,876				384,907		45,091
Written and purchased options				375,495		295,425				200,126		199,061
Total derivatives not designated as hedging instruments under ASC Topic 815				872,542		868,604				1,078,957		624,455
Total			$	872,542	$	868,604			$	1,078,957	$	624,455

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 June 30, 2014 and December 31, 2013, the Company was required to post $8.7 million and $5.0 million, respectively, in cash as collateral for its derivative transactions, which are included in interest-bearing deposits in banks on the Company’s 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 June 30, 2014. 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 agreement to the non-defaulting entity upon an event of default of the counterparty, including bankruptcy, insolvency, or similar proceeding, and (2) provide the non-defaulting entity the right to accelerate, terminate, and close-out on a net basis all transactions under the agreement and to liquidate or set-off collateral promptly upon an event of default of the counterparty. As permitted by U.S. 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.

	June 30, 2014
(Dollars in thousands)	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet
			Derivatives		Collateral (1)			Net
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		14,653		—		—			14,653
Written and purchased options		18,645		—		—			18,645
Total derivative assets subject to master netting arrangements	$	33,298	$	—	$	—		$	33,298
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		14,653		—		(4,060	)		10,593
Total derivative liabilities subject to master netting arrangements	$	14,653	$	—	$	(4,060	)	$	10,593

	December 31, 2013
(Dollars in thousands)	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet
			Derivatives		Collateral (1)			Net
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		10,621		—		—			10,621
Written and purchased options		15,801		—		—			15,801
Total derivative assets subject to master netting arrangements	$	26,422	$	—	$	—		$	26,422
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	—	$	—	$	—		$	—
Interest rate contracts not designated as hedging instruments		10,620		—		(5,419	)		5,201
Total derivative liabilities subject to master netting arrangements	$	10,620	$	—	$	(5,419	)	$	5,201

⁽¹⁾  Consists of cash collateral recorded at cost, which approximates fair value, and investment securities.

During the six months ended June 30, 2014 and 2013, the Company has not reclassified 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 June 30, 2014, the fair value of derivatives that will mature within the next twelve months is $0.3 million. The Company does not expect to reclassify any amount from accumulated other comprehensive income into interest income over the next twelve months for derivatives that will be settled.

At June 30, 2014 and 2013, and for the three and six months then ended, information pertaining to the effect of the hedging instruments on the consolidated financial statements is as follows:

	Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)				Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)				Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	As of June 30					For the Three Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013			2014		2013
Derivatives in ASC Topic 815 Cash Flow Hedging Relationships
Interest rate contracts	$	—	$	—	Other income (expense)	$	—	$	32	Other income (expense)	$	—	$	—
Total	$	—	$	—		$	—	$	32		$	—	$	—

	Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)				Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)					Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	As of June 30					For the Six Months Ended June 30
(Dollars in thousands)	2014		2013			2014		2013				2014		2013
Derivatives in ASC Topic 815 Cash Flow Hedging Relationships
Interest rate contracts	$	—	$	—	Other income (expense)	$	—	$	(392	)	Other income (expense)	$	—	$	—
Total	$	—	$	—		$	—	$	(392	)		$	—	$	—

		Amount of Gain (Loss) Recognized in Income on Derivatives
	Location of Gain (Loss) Recognized in Income on Derivatives	For the Three Months Ended June 30						For the Six Months Ended June 30
(Dollars in thousands)		2014			2013			2014			2013
Derivatives Not Designated as Hedging Instruments under ASC Topic 815
Interest rate contracts	Other income (expense)	$	1,027		$	471			1,565			688
Forward sales contracts	Mortgage Income		(859	)		8,320			(3,864	)		5,408
Written and purchased options	Mortgage Income		(205	)		(4,815	)		1,628			(3,730	)
Total		$	(37	)	$	3,976		$	(671	)	$	2,366

XML

Goodwill and Other Acquired Intangible Assets - Schedule of Definite-Lived Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 52,380	$ 46,754
Accumulated Amortization	(34,002)	(31,415)
Net Carrying Amount	18,378	15,339
Core Deposit Intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	50,564	45,406
Accumulated Amortization	(33,135)	(30,784)
Net Carrying Amount	17,429	14,622
Customer Relationship Intangible Asset [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,398	1,348
Accumulated Amortization	(780)	(631)
Net Carrying Amount	618	717
Non-compete Agreement [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	163
Accumulated Amortization	(25)
Net Carrying Amount	138
Other Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	255
Accumulated Amortization	(62)
Net Carrying Amount	$ 193

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Loss Sharing Agreements and FDIC Loss Share Receivable

6 Months Ended

Jun. 30, 2014

Text Block [Abstract]

Loss Sharing Agreements and FDIC Loss Share Receivable

NOTE 8 – LOSS SHARING AGREEMENTS AND FDIC LOSS SHARE RECEIVABLE

Loss Sharing Agreements

In 2009, the Company acquired substantially all of the assets and liabilities of CSB, and certain assets and assumed certain deposit and other liabilities of Orion and Century. In 2010, the Company acquired certain assets, deposits, and other liabilities of Sterling. Excluding consumer loans acquired from Sterling, the loans and foreclosed real estate that were acquired in these transactions are covered by loss share agreements between the FDIC and IBERIABANK, which afford IBERIABANK loss protection.

During the reimbursable loss periods, the FDIC will cover 80% of covered loan and foreclosed real estate losses up to certain thresholds for all four acquisitions, and 95% of losses that exceed contractual thresholds for CSB, Orion, and Century. The CSB reimbursable loss period ends during the third quarter of 2014 for all covered assets excluding single family residential assets and during the third quarter of 2019 for single family residential assets. The Century and Orion reimbursable loss periods end during the fourth quarter of 2014 for all covered assets excluding single family residential assets and during the fourth quarter of 2019 for single family residential assets. The Sterling reimbursable loss period ends during the third quarter of 2015 for all covered assets excluding single family residential assets and during the third quarter of 2020 for single family residential assets. To the extent that loss share coverage ends prior to triggering events on covered assets that would enable the Company to collect these amounts from the FDIC, future impairments may be required.

In addition, all covered assets, excluding single family residential assets, have a three year recovery period, which begins upon expiration of the reimbursable loss period. During the recovery periods, the Company must reimburse the FDIC for its share of any recovered losses, net of certain expenses, consistent with the covered loss reimbursement rates in effect during the recovery periods.

The Orion, Century, and Sterling loss share agreements include “clawback” provisions. The clawback provisions require the Company to make payments to the FDIC to the extent that specified cumulative loss floors are not met. For each of the three loss share agreements that contain clawback provisions, cumulative losses have exceeded the cumulative loss floors that would trigger a clawback payment. However, the sum of the historical and remaining projected losses and recoveries under one agreement is less than the clawback threshold stated in that agreement. The Company has a liability of $0.8 million at both June 30, 2014 and December 31, 2013, to reserve for the amount of consideration due to the FDIC based on projected net losses. Improvement in the performance of covered assets in excess of current expectations, particularly in regard to improvements in recoveries and/or reduced losses, through expiration of the recovery periods could result in reduced levels of cumulative losses that trigger the clawback provisions within any or all of the applicable loss share agreements.

FDIC loss share receivables

The Company recorded indemnification assets in the form of FDIC loss share receivables as of the acquisition date of each of the four banks covered by loss share agreements. At acquisition, the indemnification assets represented the fair value of the expected cash flows to be received from the FDIC under the loss share agreements. Subsequent to acquisition, the FDIC loss share receivables are updated to reflect changes in actual and expected amounts collectible adjusted for amortization.

The following is a summary of FDIC loss share receivables year-to-date activity:

	Six Months Ended June 30
(Dollars in thousands)	2014			2013
Balance at beginning of period	$	162,312		$	423,069
Change due to (reversal of) loan loss provision recorded on FDIC covered loans		(3,598	)		(55,085	)
Amortization		(36,273	)		(45,831	)
Submission of reimbursable losses to (recoveries payable to) the FDIC		2,215			(42,043	)
Impairment		(804	)		(31,813	)
Changes due to a change in cash flow assumptions on OREO and other changes		(3,320	)		(7,257	)
Balance at end of period	$	120,532		$	241,040

FDIC loss share receivables collectability assessment

The Company assesses the FDIC loss share receivables for collectability on a quarterly basis. Based on the collectability analysis completed for the six months ended June 30, 2014, the Company concluded that the $120.5 million FDIC loss share receivable is fully collectible as of June 30, 2014. See below for discussion of the impairment charges recognized in 2014 and 2013.

Impairment of FDIC loss share receivables

Based on improving economic trends, their impact on the amount and timing of expected future cash flows, and delays in the foreclosure process, during the loss share receivable collectability assessment completed for the three-months ended June 30, 2014 and March 31, 2013, the Company concluded that certain expected losses were probable of not being collected from either the FDIC or the customer because such projected losses were no longer expected to occur or were expected to occur beyond the reimbursable loss periods specified within the loss share agreements.

On April 10, 2013, management concluded and the Audit Committee and the Board of Directors agreed that an impairment charge was required under generally accepted accounting principles applicable to the Company and should be recognized in the Company’s consolidated financial statements during the three-month period ended March 31, 2013. Therefore, the Company recognized a valuation allowance against the indemnification assets in the amount of $31.8 million through a charge to net income.

Management deemed an impairment charge necessary for the three-month period ended June 30, 2014 for $0.8 million.

XML

Investment Securities - Additional Information on Securities in a Continuous Loss Position (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014 Securities	Dec. 31, 2013 Securities
Schedule of Available-for-sale Securities [Line Items]
Number of securities, available for sale securities	91	25
Number of securities, amortized costs	$ 669,278	$ 112,476
Number of securities, unrealized loss	16,130	6,188
Fannie Mae Freddie Mac or Ginnie Mae [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities, available for sale securities	80	20
Number of securities, amortized costs	653,411	104,520
Number of securities, unrealized loss	15,636	5,519
Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities, available for sale securities	11	5
Number of securities, amortized costs	15,867	7,956
Number of securities, unrealized loss	$ 494	$ 669

XML

Business Segments - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014 Segment
Segment Reporting [Abstract]
No of business segments	3

XML

Loans Receivable

6 Months Ended

Jun. 30, 2014

Receivables [Abstract]

Loans Receivable

NOTE 6 – LOANS RECEIVABLE

Loans receivable consist of the following, segregated into non-covered and covered loans, for the periods indicated:

	June 30, 2014
(Dollars in thousands)	Non-covered loans		Covered loans		Total
Commercial loans:
Real estate	$	3,949,444	$	294,115	$	4,243,559
Business		3,095,087		35,902		3,130,989
		7,044,531		330,017		7,374,548
Residential mortgage loans:
Residential 1-4 family		926,972		141,613		1,068,585
Construction / Owner Occupied		56,039		—		56,039
		983,011		141,613		1,124,624
Consumer and other loans:
Home equity		1,357,073		110,068		1,467,141
Indirect automobile		392,355		—		392,355
Other		536,119		3,740		539,859
		2,285,547		113,808		2,399,355
Total	$	10,313,089	$	585,438	$	10,898,527

	December 31, 2013
(Dollars in thousands)	Non-covered loans		Covered loans		Total
Commercial loans:
Real estate	$	3,479,973	$	387,332	$	3,867,305
Business		2,959,088		37,025		2,996,113
		6,439,061		424,357		6,863,418
Residential mortgage loans:
Residential 1-4 family		423,057		154,025		577,082
Construction / Owner Occupied		9,450		—		9,450
		432,507		154,025		586,532
Consumer and other loans:
Home equity		1,154,670		137,122		1,291,792
Indirect automobile		375,236		—		375,236
Other		370,752		4,289		375,041
		1,900,658		141,411		2,042,069
Total	$	8,772,226	$	719,793	$	9,492,019

In 2009, the Company acquired substantially all of the assets and liabilities of CapitalSouth Bank (“CSB”), and certain assets deposits, and other liabilities of Orion Bank (“Orion”) and Century Bank (“Century”). In 2010, the Company acquired certain assets and assumed certain deposit and other liabilities of Sterling Bank (“Sterling”). Substantially all of the loans and foreclosed real estate that were acquired in these transactions are covered by loss sharing agreements between the FDIC and IBERIABANK, which afford IBERIABANK loss protection. Refer to Note 8 for additional information regarding the Company’s loss sharing agreements.

Because of the loss protection provided by the FDIC, the risks of the CSB, Orion, Century, and Sterling loans and foreclosed real estate are significantly different from those assets not covered under the loss share agreements. Accordingly, the Company presents loans subject to the loss share agreements as “covered loans” and loans that are not subject to the loss share agreements as “non-covered loans.”

Deferred loan origination fees were $19.1 million and $18.6 million and deferred loan expenses were $8.4 million and $7.6 million at June 30, 2014 and December 31, 2013, respectively. 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 June 30, 2014 and December 31, 2013, overdrafts of $6.4 million and $3.1 million, respectively, have been reclassified to loans receivable.

Loans with carrying values of $2.4 billion and $2.3 billion were pledged to secure public deposits and other borrowings at June 30, 2014 and December 31, 2013, respectively.

Non-covered Loans

The following tables provide an analysis of the aging of non-covered loans as of June 30, 2014 and December 31, 2013. Because of the difference in accounting for acquired loans, the tables below further segregate the Company’s non-covered loans receivable between acquired loans and loans originated by the Company. For purposes of the following tables, subprime mortgage loans are defined as the Company’s mortgage loans that have FICO scores that are less than 620 at the time of origination or were purchased outside of a business combination.

	June 30, 2014
	Non-covered loans excluding acquired loans
	Past Due (1)								Current		Total Non-covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	56	$	223	$	1,349	$	1,628	$	591,233	$	592,861	$	—
Commercial real estate – other		387		112		4,331		4,830		2,828,295		2,833,125		—
Commercial business		3,742		56		4,191		7,989		2,953,471		2,961,460		—
Residential prime		2,581		1,455		10,593		14,629		326,077		340,706		20
Residential subprime		—		—		3,111		3,111		115,835		118,946		—
Home equity		1,518		703		7,949		10,170		1,163,216		1,173,386		—
Indirect automobile		1,611		322		1,192		3,125		388,356		391,481		—
Credit card		282		158		949		1,389		63,871		65,260		—
Other		567		209		542		1,318		356,189		357,507		—
Total	$	10,744	$	3,238	$	34,207	$	48,189	$	8,786,543	$	8,834,732	$	20

	December 31, 2013
	Non-covered loans excluding acquired loans
	Past Due (1)								Current		Total Non-covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	—	$	—	$	1,803	$	1,803	$	381,292	$	383,095	$	—
Commercial real estate – other		6,098		5,630		7,650		19,378		2,732,431		2,751,809		2
Commercial business		2,117		423		15,020		17,560		2,888,491		2,906,051		—
Residential prime		1,104		852		9,684		11,640		286,167		297,807		1,073
Residential subprime		—		—		1,626		1,626		114,939		116,565		—
Home equity		1,956		569		6,808		9,333		1,091,894		1,101,227		—
Indirect automobile		1,427		293		1,275		2,995		370,388		373,383		—
Credit card		266		92		411		769		62,873		63,642		—
Other		458		106		485		1,049		293,693		294,742		—
Total	$	13,426	$	7,965	$	44,762	$	66,153	$	8,222,168	$	8,288,321	$	1,075

⁽¹⁾  Past due loans include loans on nonaccrual status as of the period indicated. Nonaccrual loans are presented separately in the “Nonaccrual Loans” section below.

	June 30, 2014
	Non-covered acquired loans
	Past Due (1)								Current		Discount/ Premium			Total Non- covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	—	$	597	$	2,183	$	2,780	$	35,403	$	(2,536	)	$	35,647	$	2,090
Commercial real estate – other		3,584		628		23,144		27,356		511,672		(51,217	)		487,811		21,592
Commercial business		1,944		281		2,212		4,437		136,130		(6,941	)		133,626		2,172
Residential prime		331		1,378		6,703		8,412		508,678		6,269			523,359		525
Home equity		1,260		622		8,667		10,549		180,703		(7,565	)		183,687		4,629
Indirect automobile		28		—		59		87		850		(63	)		874		59
Other		1,004		395		2,096		3,495		122,011		(12,154	)		113,352		343
Total	$	8,151	$	3,901	$	45,064	$	57,116	$	1,495,447	$	(74,207	)	$	1,478,356	$	31,410

	December 31, 2013
	Non-covered acquired loans
	Past Due (1)								Current		Discount/ Premium			Total Non- covered Loans, Net of Unearned Income		Recorded Investment > 90 days and Accruing
(Dollars in thousands)	30-59 days		60-89 days		> 90 days		Total
Commercial real estate construction	$	388	$	—	$	2,542	$	2,930	$	19,833	$	(2,532	)	$	20,231	$	2,542
Commercial real estate – other		1,798		1,963		27,967		31,728		345,286		(52,176	)		324,838		27,967
Commercial business		544		—		1,218		1,762		54,189		(2,914	)		53,037		1,218
Residential prime		—		—		226		226		18,796		(887	)		18,135		226
Home equity		313		516		4,242		5,071		53,995		(5,623	)		53,443		4,242
Indirect automobile		33		—		95		128		1,725		—			1,853		95
Other		175		101		975		1,251		12,598		(1,481	)		12,368		975
Total	$	3,251	$	2,580	$	37,265	$	43,096	$	506,422	$	(65,613	)	$	483,905	$	37,265

⁽¹⁾  Past due information includes acquired loans at the gross loan balance, prior to application of discounts.

Non-accrual Loans

The following table provides the recorded investment of non-covered loans, excluding acquired loans, on non-accrual status at June 30, 2014 and December 31, 2013.

(Dollars in thousands)	June 30 2014		December 31 2013
Commercial real estate construction	$	1,349	$	1,803
Commercial real estate – other		4,331		7,648
Commercial business		4,191		15,020
Residential prime		10,573		8,611
Residential subprime		3,111		1,626
Home equity		7,949		6,808
Indirect automobile		1,192		1,275
Credit card		949		411
Other		542		485
Total	$	34,187	$	43,687

Covered Loans

The carrying amount of the acquired covered loans at June 30, 2014 and December 31, 2013 consisted of loans determined to be impaired at the acquisition date, which are accounted for in accordance with ASC Topic 310-30, and loans that were considered to be performing at the acquisition date, accounted for by analogy to ASC Topic 310-30, as detailed in the following tables.

	June 30, 2014
(Dollars in thousands)	Acquired Impaired Loans		Acquired Performing Loans		Total Covered Loans
Commercial loans:
Real estate	$	6,523	$	287,592	$	294,115
Business		—		35,902		35,902
		6,523		323,494		330,017
Residential mortgage loans:
Residential 1-4 family		28,273		113,340		141,613
Construction / Owner Occupied		—		—		—
		28,273		113,340		141,613
Consumer and other loans:
Home equity		13,879		96,189		110,068
Indirect automobile		—		—		—
Other		596		3,145		3,741
		14,475		99,334		113,809
Total	$	49,271	$	536,168	$	585,439

	December 31, 2013
(Dollars in thousands)	Acquired Impaired Loans		Acquired Performing Loans		Total Covered Loans
Commercial loans:
Real estate	$	14,904	$	372,428	$	387,332
Business		—		37,025		37,025
		14,904		409,453		424,357
Residential mortgage loans:
Residential 1-4 family		28,223		125,802		154,025
Construction / Owner Occupied		—		—		—
		28,223		125,802		154,025
Consumer and other loans:
Home equity		21,768		115,354		137,122
Indirect automobile		—		—		—
Other		1,182		3,107		4,289
		22,950		118,461		141,411
Total	$	66,077	$	653,716	$	719,793

Loans Acquired

The Company acquired loans (both covered and non-covered) through previous acquisitions, which are subject to ASC Topic 310-30.

As discussed in Note 4, during 2014, the Company acquired loans of $86.9 million from Trust One-Memphis, $700.0 million from Teche, and $298.6 million for First Private in the current period. $1.0 billion in loans acquired are accounted for under ASC Topic 310-10, while the carrying amounts of the loans acquired in the current period subject to ASC Topic 310-30 are detailed in the following table as of the purchase date. The allocation of loans acquired from both Teche and First Private between loans subject to ASC Topic 310-30 and those subject to ASC Topic 310-10 is preliminary and subject to change up to one year after the acquisition dates as information on these loans becomes available.

(Dollars in thousands)	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Contractually required principal and interest at acquisition	$	82,967		$	15,130		$	98,097
Nonaccretable difference (expected losses and foregone interest)		(4,197	)		(361	)		(4,558	)
Cash flows expected to be collected at acquisition		78,770			14,769			93,539
Accretable yield		(8,242	)		(1,536	)		(9,778	)
Basis in acquired loans at acquisition	$	70,528		$	13,233		$	83,761

The following is a summary of changes in the accretable difference of acquired loans during the six months ended June 30, 2014 and 2013.

	June 30, 2014
(Dollars in thousands)	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Balance at beginning of period	$	78,349		$	276,543		$	354,892
Acquisition		8,242			1,536			9,778
Transfers from nonaccretable difference to accretable yield		4,128			13,517			17,645
Accretion		(4,089	)		(50,429	)		(54,518	)
Changes in expected cash flows not affecting nonaccretable differences (1)		(12,176	)		12,720			544
Balance at end of period	$	74,454		$	253,887		$	328,341

	June 30, 2013
	Acquired Impaired Loans			Acquired Performing Loans			Total Acquired Loans
Balance at beginning of period	$	76,623		$	279,770		$	356,393
Transfers from nonaccretable difference to accretable yield		6,368			32,039			38,407
Accretion		(10,973	)		(81,227	)		(92,200	)
Changes in expected cash flows not affecting nonaccretable differences (1)		4,158			70,721			74,879
Balance at end of period	$	76,176		$	301,303		$	377,479

(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 troubled debt restructurings (“TDRs”) at June 30, 2014 and 2013 is presented in the following tables. The Company excludes as TDRs modifications of loans that are accounted for within a pool under ASC Topic 310-30, which include the covered loans above, as well as acquired loans. 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 covered and acquired loans that would otherwise meet the criteria for classification as a TDR are excluded from the tables below.

	June 30, 2014								June 30, 2013
	Accruing Loans								Accruing Loans
(Dollars in thousands)	Current		Past Due > 30 days		Nonaccrual TDRs		Total TDRs		Current		Past Due > 30 days		Nonaccrual TDRs		Total TDRs
Commercial real estate construction	$	—	$	—	$	—	$	—	$	—		—		—		—
Commercial real estate – other		378		—		1,634		2,012		677		—		8,064		8,741
Commercial business		811		—		2,342		3,153		1,135		—		281		1,416
Residential prime		—		—		—		—		—		—		—		—
Residential subprime		—		—		—		—		—		—		—		—
Home equity		—		—		248		248		—		—		268		268
Indirect automobile		—		—		—		—		—		—		—		—
Credit card		—		—		—		—		—		—		—		—
Other		—		—		—		—		—		—		—		—
Total	$	1,189	$	—	$	4,224	$	5,413	$	1,812	$	—	$	8,613	$	10,425

At June 30, 2014, there were no TDRs that occurred during the first six months through modification of the original loan terms. TDRs totaling $1.5 million occurred during the six-month period ending June 30, 2013 and were subsequently charged off during the same period. The following table provides information on how the TDRs were modified during the six months ended June 30:

(Dollars in thousands)	2014		2013
Extended maturities	$	—	$	—
Interest rate adjustment		—		—
Maturity and interest rate adjustment		—		1,545
Movement to or extension of interest-rate only payments		—		—
Forbearance		—		—
Other concession(s) (1)		—		—
Total	$	—	$	1,545

⁽¹⁾ Other concessions include concessions or a combination of concessions that do not consist of maturity extensions, interest rate adjustments, forbearance or covenant modifications.

Information about the Company’s TDRs occurring in these periods is presented in the following table.

	June 30, 2014						June 30, 2013
(In thousands, except number of loans)	Number of Loans		Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment  (1)		Number of Loans		Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment  (1)
Commercial real estate		—	$	—	$	—		1	$	1,545	$	1,545
Commercial business		—		—		—		—		—		—
Residential prime		—		—		—		—		—		—
Home Equity		—		—		—		—		—		—
Indirect automobile		—		—		—		—		—		—
Credit card		—		—		—		—		—		—
Other		—		—		—		—		—		—
Total		—	$	—	$	—		1	$	1,545	$	1,545

⁽¹⁾ Recorded investment includes any allowance for credit losses recorded on the TDRs at the dates indicated.

Information detailing non-covered TDRs that subsequently defaulted during the previous twelve months is presented in the following table. The Company has defined a default as any loan with a loan payment that is currently past due greater than 30 days, or was past due greater than 30 days at any point during the previous twelve months, or since the date of modification, whichever is shorter.

	June 30, 2014				June 30, 2013
(In thousands, except number of loans)	Number of Loans		Recorded Investment		Number of Loans		Recorded Investment
Commercial real estate		31	$	1,635		48	$	8,673
Commercial business		11		2,115		8		1,417
Residential prime		—		—		—		—
Home Equity		1		40		1		49
Indirect automobile		—		—		—		—
Credit card		—		—		—		—
Other		1		—		1		—
Total		44	$	3,790		58	$	10,139

XML

Allowance for Credit Losses and Credit Quality

6 Months Ended

Jun. 30, 2014

Receivables [Abstract]

Allowance for Credit Losses and Credit Quality

NOTE 7 – ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY

Allowance for Credit Losses Activity

A summary of changes in the allowance for credit losses for the covered loan and non-covered loan portfolios for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
	Non-covered loans
(Dollars in thousands)	Excluding Acquired Loans			Acquired Loans			Covered Loans			Total
Allowance for credit losses
Balance at beginning of period	$	67,342		$	4,557		$	71,175		$	143,074
(Reversal of) Provision for loan losses before benefit attributable to FDIC loss share agreements		5,078			(1,085	)		(740	)		3,253
Adjustment attributable to FDIC loss share arrangements		—			—			3,598			3,598
Net (reversal of) provision for loan losses		5,078			(1,085	)		2,858			6,851
Adjustment attributable to FDIC loss share arrangements		—			—			(3,598	)		(3,598	)
Transfer of balance to OREO		—			(523	)		(5,085	)		(5,608	)
Loans charged-off		(5,198	)		(182	)		(5,393	)		(10,773	)
Recoveries		3,426			109			38			3,573
Balance at end of period	$	70,648		$	2,876		$	59,995		$	133,519
Reserve for unfunded lending commitments
Balance, beginning of period	$	11,147		$	—		$	—		$	11,147
Provision for unfunded lending commitments		113			—			—			113
Balance at end of period	$	11,260		$	—		$	—		$	11,260

	June 30, 2013
	Non-covered loans
	Excluding Acquired Loans			Acquired Loans			Covered Loans			Total
Allowance for loan losses
Balance at beginning of period	$	74,211		$	8,816		$	168,576		$	251,603
(Reversal of) Provision for loan losses before adjustment attributable to FDIC loss share agreements		(585	)		(1,009	)		(55,060	)		(56,654	)
Adjustment attributable to FDIC loss share arrangements		—			—			55,085			55,085
Net (reversal of) provision for loan losses		(585	)		(1,009	)		25			(1,569	)
Adjustment attributable to FDIC loss share arrangements		—			—			(55,085	)		(55,085	)
Transfer of balance to OREO		—			(973	)		(16,712	)		(17,685	)
Transfer of balance to the RULC		(9,828	)		—			—			(9,828	)
Loans charged-off		(4,249	)		—			(2,334	)		(6,583	)
Recoveries		2,050			—			—			2,050
Balance at end of period		61,599			6,834		$	94,470		$	162,903
Reserve for unfunded lending commitments
Balance, beginning of period		—			—			—			—
Transfer of balance from the allowance for loan losses		9,828			—			—			9,828
Provision for unfunded lending commitments		514			—			—			514
Balance at end of period	$	10,342		$	—		$	—		$	10,342

A summary of changes in the allowance for credit losses for non-covered loans, by loan portfolio type, for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for loan losses
Balance at beginning of period	$	26,590		$	28,515		$	2,546		$	14,248		$	—	$	71,899
(Reversal of) Provision for loan losses		585			782			171			2,455			—		3,993
Transfer of balance to OREO		(108	)		(162	)		(253	)		—			—		(523	)
Loans charged off		(660	)		(668	)		(435	)		(3,617	)		—		(5,380	)
Recoveries		1,699			65			114			1,657			—		3,535
Balance at end of period	$	28,106		$	28,532		$	2,143		$	14,743		$	—	$	73,524
Reserve for unfunded commitments
Balance at beginning of period	$	3,089		$	4,839		$	72		$	3,147		$	—	$	11,147
(Reversal of) Provision for unfunded commitments		112			(43	)		4			40			—		113
Balance at end of period	$	3,201		$	4,796		$	76		$	3,187		$	—	$	11,260
Allowance on loans individually evaluated for impairment	$	—		$	31		$	171		$	—		$	—	$	202
Allowance on loans collectively evaluated for impairment		28,105			28,501			1,972			14,743			—		73,321
Loans, net of unearned income:
Balance at end of period	$	3,949,444		$	3,095,087		$	983,011		$	2,285,547		$	—	$	10,313,089
Balance at end of period individually evaluated for impairment		5,976			4,563			1,058			248			—		11,845
Balance at end of period collectively evaluated for impairment		3,943,468			3,090,524			981,953			2,285,299			—		10,301,244
Balance at end of period acquired with deteriorated credit quality		30,799			5,496			1,209			3,803			—		41,307

	June 30, 2013
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for credit losses
Balance at beginning of period	$	38,264		$	28,721		$	2,125		$	13,917		$	—	$	83,027
(Reversal of) Provision for loan losses		(7,459	)		557			2,961			2,347			—		(1,594	)
Transfer of balance to OREO		(264	)		(90	)		(612	)		(7	)		—		(973	)
Transfer of balance to the RULC		(2,939	)		(3,497	)		(40	)		(3,352	)		—		(9,828	)
Loans charged off		(807	)		(395	)		(2,603	)		(444	)		—		(4,249	)
Recoveries		500			259			188			1,103			—		2,050
Balance at end of period	$	27,295		$	25,555		$	2,019		$	13,564		$	—	$	68,433
Reserve for unfunded commitments
Balance at beginning of period	$	—		$	—		$	—		$	—		$	—	$	—
Transfer of balance from the allowance for loan losses		2,939			3,497			40			3,352					9,828
(Reversal of) Provision for unfunded commitments		545			12			—			(43	)				514
Balance at end of period	$	3,484		$	3,509		$	40		$	3,309		$	—	$	10,342
Allowance on loans individually evaluated for impairment	$	72		$	116		$	137		$	—		$	—	$	325
Allowance on loans collectively evaluated for impairment		27,223			25,439			1,882			13,564			—		68,108
Loans, net of unearned income:
Balance at end of period	$	3,224,078		$	2,618,963		$	350,842		$	1,790,939		$	—	$	7,984,822
Balance at end of period individually evaluated for impairment		16,525			14,014			1,152			267			—		31,958
Balance at end of period collectively evaluated for impairment		3,207,553			2,604,949			349,690			1,790,672			—		7,952,864
Balance at end of period acquired with deteriorated credit quality		40,015			3,468			383			3,287			—		47,153

A summary of changes in the allowance for credit losses for covered loans, by loan portfolio type, for the six months ended June 30, 2014 and 2013 is as follows:

	June 30, 2014
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for loan losses
Balance at beginning of period	$	38,772		$	5,380		$	10,889		$	16,134		$	—	$	71,175
Provision for loan losses		1,474			313			592			479			—		2,858
(Decrease) Increase in FDIC loss share receivable		(2,121	)		749			(2,100	)		(126	)		—		(3,598	)
Transfer of balance to OREO		(1,857	)		(1,162	)		(534	)		(1,532	)		—		(5,085	)
Loans charged off		(3,726	)		(1,589	)		—			(78	)		—		(5,393	)
Recoveries		38			—			—			—			—		38
Balance at end of period	$	32,580		$	3,691		$	8,847		$	14,877		$	—	$	59,995
Allowance on loans individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—	$	—
Allowance on loans collectively evaluated for impairment		32,580			3,691			8,847			14,877			—		59,995
Loans, net of unearned income:
Balance at end of period	$	294,115		$	35,902		$	141,613		$	113,809		$	—	$	585,439
Balance at end of period individually evaluated for impairment		—			—			—			—			—		—
Balance at end of period collectively evaluated for impairment		294,115			35,902			141,613			113,809			—		585,439
Balance at end of period acquired with deteriorated credit quality		6,523			—			28,273			14,475			—		49,271

	June 30, 2013
(Dollars in thousands)	Commercial real estate			Commercial business			Mortgage			Consumer			Unallocated		Total
Allowance for credit losses
Balance at beginning of period	$	100,871		$	11,375		$	22,566		$	33,764		$	—	$	168,576
Provision for loan losses		27			—			(1	)		(1	)		—		25
(Decrease) Increase in FDIC loss share receivable		(26,737	)		(2,672	)		(7,073	)		(18,603	)		—		(55,085	)
Transfer of balance to OREO		(12,178	)		(314	)		(4,221	)		1			—		(16,712	)
Loans charged off		(2,334	)		—			—			—			—		(2,334	)
Balance at end of period	$	59,649		$	8,389		$	11,271		$	15,161		$	—	$	94,470
Allowance on loans individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—	$	—
Allowance on loans collectively evaluated for impairment		59,649			8,389			11,271			15,161			—		94,470
Loans, net of unearned income:
Balance at end of period	$	520,160		$	68,957		$	167,654		$	161,444		$	—	$	918,215
Balance at end of period individually evaluated for impairment		—			—			—			—			—		—
Balance at end of period collectively evaluated for impairment		520,160			68,957			167,654			161,444			—		918,215
Balance at end of period acquired with deteriorated credit quality		132,565			2,005			17,969			19,504			—		172,043

Credit Quality

The Company’s investment in non-covered loans by credit quality indicator is presented in the following tables. Because of the difference in accounting for acquired loans, the tables below further segregate the Company’s non-covered loans receivable between acquired loans and loans that were not acquired. Loan premiums/discounts in the tables below represent the adjustment of non-covered acquired loans to fair value at the acquisition date, as adjusted for income accretion and changes in cash flow estimates in subsequent periods. Asset risk classifications for commercial loans reflect the classification as of June 30, 2014 and December 31, 2013, respectively. Credit quality information in the tables below include loans acquired at the gross loan balance, prior to the application of premiums/discounts, at June 30, 2014 and December 31, 2013.

	Non-covered loans excluding acquired loans
	June 30, 2014										December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Total		Pass		Special Mention		Substandard		Doubtful		Total
Commercial real estate construction	$	581,164	$	252	$	11,445	$	—	$	592,861	$	370,824	$	9,309	$	2,962	$	—	$	383,095
Commercial real estate – other		2,757,043		46,067		29,783		232		2,833,125		2,694,161		27,227		30,308		113		2,751,809
Commercial business		2,920,519		27,975		11,013		1,953		2,961,460		2,866,794		6,164		32,167		926		2,906,051
Total	$	6,258,726	$	74,294	$	52,241	$	2,185	$	6,387,446	$	5,931,779	$	42,700	$	65,437	$	1,039	$	6,040,955

	Non-covered loans excluding acquired loans
	June 30, 2014						December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Total		Current		30+ Days Past Due		Total
Residential prime	$	326,077	$	14,629	$	340,706	$	286,167	$	11,640	$	297,807
Residential subprime		115,835		3,111		118,946		114,939		1,626		116,565
Home equity		1,163,216		10,170		1,173,386		1,091,894		9,333		1,101,227
Indirect automobile		388,356		3,125		391,481		370,388		2,995		373,383
Credit card		63,871		1,389		65,260		62,873		769		63,642
Consumer – other		356,189		1,318		357,507		293,693		1,049		294,742
Total	$	2,413,544	$	33,742	$	2,447,286	$	2,219,954	$	27,412	$	2,247,366

	Non-covered acquired loans
	June 30, 2014													December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Discount			Total		Pass		Special Mention		Substandard		Doubtful		Discount			Total
Commercial real estate construction	$	31,269	$	1,541	$	5,373	$	—	$	(2,536	)	$	35,647	$	17,132	$	196	$	5,435	$	—	$	(2,532	)	$	20,231
Commercial real estate – other		482,016		13,816		42,866		330		(51,217	)		487,811		310,303		15,351		51,267		93		(52,176	)		324,838
Commercial business		132,151		2,916		4,571		929		(6,941	)		133,626		51,414		1,920		2,586		31		(2,914	)		53,037
Total	$	645,436	$	18,273	$	52,810	$	1,259	$	(60,694	)	$	657,084	$	378,849	$	17,467	$	59,288	$	124	$	(57,622	)	$	398,106

	Non-covered acquired loans
	June 30, 2014									December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Premium (discount)			Total		Current		30+ Days Past Due		Premium (discount)			Total
Residential prime	$	508,678	$	8,412	$	6,269		$	523,359	$	18,796	$	226	$	(887	)	$	18,135
Home equity		180,703		10,549		(7,565	)		183,687		53,995		5,071		(5,623	)		53,443
Indirect automobile		850		87		(63	)		874		1,725		128		—			1,853
Consumer – other		122,011		3,495		(12,154	)		113,352		12,598		1,251		(1,481	)		12,368
Total	$	812,242	$	22,543	$	(13,513	)	$	821,272	$	87,114	$	6,676	$	(7,991	)	$	85,799

The Company’s investment in covered loans by credit quality indicator is presented in the following table. Loan premiums/discounts in the tables below represent the adjustment of covered loans to fair value at the date, as adjusted for income accretion and changes in cash flow estimates in subsequent periods.

	Covered loans
	June 30, 2014											December 31, 2013
(Dollars in thousands)	Pass		Special Mention		Substandard		Doubtful		Total			Pass		Special Mention		Substandard		Doubtful		Total
Commercial real estate construction	$	39,482	$	1,997	$	14,476	$	—	$	55,955		$	42,886	$	7,401	$	23,891	$	497	$	74,675
Commercial real estate – other		119,489		40,291		104,527		821		265,128			148,579		49,699		144,680		3,267		346,225
Commercial business		25,592		930		9,334		46		35,902			30,710		780		14,556		984		47,030
		$184,563	$	43,218	$	128,337	$	867	$	356,985		$	222,175	$	57,880	$	183,127	$	4,748	$	467,930
Discount										(26,968	)										(43,573	)
Total									$	330,017										$	424,357

	Covered loans
	June 30, 2014									December 31, 2013
(Dollars in thousands)	Current		30+ Days Past Due		Premium (discount)			Total		Current		30+ Days Past Due		Premium (discount)			Total
Residential prime	$	149,945	$	30,381	$	(38,713	)	$	141,613	$	158,710	$	30,814	$	(35,499	)	$	154,025
Home equity		124,113		16,489		(30,534	)		110,068		143,236		35,811		(41,925	)		137,122
Credit card		582		50		—			632		648		31		—			679
Consumer – other		316		71		2,721			3,108		591		144		2,875			3,610
Total	$	274,956	$	46,991	$	(66,526	)	$	255,421	$	303,185	$	66,800	$	(74,549	)	$	295,436

Impaired Loans

Information on the Company’s investment in impaired loans is presented in the following tables as of and for the periods indicated.

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Recorded Investment		Unpaid Principal Balance		Related Allowance			Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate	$	5,146	$	5,146	$	—		$	8,567	$	8,567	$	—
Commercial business		4,291		4,291		—			13,256		13,256		—
Home equity		248		248		—			258		258		—
With an allowance recorded:
Commercial real estate		905		912		(7	)		1,268		1,284		(16	)
Commercial business		675		710		(35	)		1,927		2,770		(843	)
Residential prime		10,362		10,573		(211	)		9,791		10,019		(228	)
Residential subprime		3,097		3,111		(14	)		1,617		1,626		(9	)
Home equity		7,663		7,701		(38	)		6,506		6,550		(44	)
Indirect automobile		1,185		1,192		(7	)		1,267		1,275		(8	)
Credit card		931		949		(18	)		404		411		(7	)
Other		537		542		(5	)		481		485		(4	)
Total	$	35,040	$	35,375	$	(335	)	$	45,342	$	46,501		(1,159	)
Total commercial loans		11,017		11,059		(42	)		25,018		25,877		(859	)
Total mortgage loans		13,459		13,684		(225	)		11,408		11,645		(237	)
Total consumer loans		10,564		10,632		(68	)		8,916		8,979		(63	)

	For the Three Months Ended June 30								For the Six Months Ended June 30
	2014				2013				2014				2013
(Dollars in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate	$	5,228	$	6	$	21,452	$	24	$	5,178	$	14	$	22,871	$	63
Commercial business		5,128		9		10,942		17		5,006		22		6,891		73
Home equity		252		—		—		—		250		—		—		—
With an allowance recorded:
Commercial real estate		925				194		—		926		1		306		1
Commercial business		1,078		4		447		3		1,061		13		449		8
Residential prime		10,911		—		8,613		—		10,131		6		8,913		13
Residential subprime		3,139		—		—		—		3,127		—		—		—
Home equity		7,825		—		7,356		—		7,749		5		7,541		7
Indirect automobile		1,310		—		1,228		—		1,300		6		1,386		6
Credit card		750		—		448		—		560		—		427		—
Other		575		—		527		—		571		5		597		1
Total	$	37,121	$	19	$	51,207	$	44	$	35,859	$	72	$	49,381	$	172
Total commercial loans		12,359		19		33,035		44		12,171		50		30,517		145
Total mortgage loans		14,050		—		8,613		—		13,258		6		8,913		13
Total consumer loans		10,712		—		9,559		—		10,430		16		9,951		14

As of June 30, 2014 and December 31, 2013, the Company was not committed to lend additional funds to any customer whose loan was classified as impaired or as a troubled debt restructuring.

XML

Transfers and Servicing of Financial Assets (Including Mortgage Banking Activity)

6 Months Ended

Jun. 30, 2014

Transfers And Servicing [Abstract]

Transfers and Servicing of Financial Assets (Including Mortgage Banking Activity)

NOTE 9 – TRANSFERS AND SERVICING OF FINANCIAL ASSETS (INCLUDING MORTGAGE BANKING ACTIVITY)

Mortgage Banking Activity

IBERIABANK through its subsidiary, IMC, originates mortgage loans for sale into the secondary market. The loans originated primarily consist of residential first mortgages that conform to standards established by the government-sponsored enterprises (“GSEs”), but can also consist of junior lien loans secured by residential property. These sales are primarily to private companies that are unaffiliated with the GSEs on a servicing released basis. The following table details the mortgage banking activity as of and for the six months ended June 30:

(Dollars in thousands)	2014			2013
Balance at beginning of period	$	128,442		$	267,475
Originations and purchases		760,658			1,207,676
Sales, net of gains		(705,732	)		(1,313,120	)
Other		(4,988	)		—
Balance at end of period	$	178,380		$	162,031

(Dollars in thousands)	2014		2013
Fair value changes of derivatives and mortgage loans held for sale, net	$	3,383	$	(1,431	)
Gains on sales		24,397		37,790
Servicing and other income, net		309		280
Total mortgage income	$	28,089	$	36,639

Mortgage Servicing Rights

Mortgage servicing rights are 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:

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Mortgage servicing rights	$	2,484	$	(887	)	$	1,597	$	2,146	$	(638	)	$	1,508

XML

Loans Receivable - Schedule of Non-Covered and Covered Loans (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	$ 10,313,088	$ 8,772,226
Covered loans receivable	585,439	719,793
Total loans receivable	10,898,527	9,492,019
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	330,017	424,357
Total loans receivable	7,374,548	6,863,418
Commercial Loans [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	294,115	387,332
Total loans receivable	4,243,559	3,867,305
Commercial Loans [Member] | Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	35,902	37,025
Total loans receivable	3,130,989	2,996,113
Residential Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	141,613	154,025
Total loans receivable	1,124,624	586,532
Residential Mortgage Loans [Member] | Residential 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	141,613	154,025
Total loans receivable	1,068,585	577,082
Residential Mortgage Loans [Member] | Construction / Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable
Total loans receivable	56,039	9,450
Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	113,809	141,411
Total loans receivable	2,399,355	2,042,069
Consumer and Other Loans [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	110,068	137,122
Total loans receivable	1,467,141	1,291,792
Consumer and Other Loans [Member] | Indirect Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable
Total loans receivable	392,355	375,236
Consumer and Other Loans [Member] | Consumer - Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	3,741	4,289
Total loans receivable	539,859	375,041
Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	585,438	719,793	918,215
Covered Loans [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	330,017	424,357
Covered Loans [Member] | Commercial Loans [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	294,115	387,332
Covered Loans [Member] | Commercial Loans [Member] | Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	35,902	37,025
Covered Loans [Member] | Residential Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	141,613	154,025
Covered Loans [Member] | Residential Mortgage Loans [Member] | Residential 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	141,613	154,025
Covered Loans [Member] | Residential Mortgage Loans [Member] | Construction / Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable
Covered Loans [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	113,808	141,411
Covered Loans [Member] | Consumer and Other Loans [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	110,068	137,122
Covered Loans [Member] | Consumer and Other Loans [Member] | Indirect Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable
Covered Loans [Member] | Consumer and Other Loans [Member] | Consumer - Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans receivable	3,740	4,289
Non-Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	10,313,089	8,772,226
Non-Covered Loans [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	7,044,531	6,439,061
Non-Covered Loans [Member] | Commercial Loans [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	3,949,444	3,479,973
Non-Covered Loans [Member] | Commercial Loans [Member] | Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	3,095,087	2,959,088
Non-Covered Loans [Member] | Residential Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	983,011	432,507
Non-Covered Loans [Member] | Residential Mortgage Loans [Member] | Residential 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	926,972	423,057
Non-Covered Loans [Member] | Residential Mortgage Loans [Member] | Construction / Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	56,039	9,450
Non-Covered Loans [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	2,285,547	1,900,658
Non-Covered Loans [Member] | Consumer and Other Loans [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	1,357,073	1,154,670
Non-Covered Loans [Member] | Consumer and Other Loans [Member] | Indirect Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	392,355	375,236
Non-Covered Loans [Member] | Consumer and Other Loans [Member] | Consumer - Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered loans receivable	$ 536,119	$ 370,752

XML

Other Real Estate Owned - Schedule of Other Real Estate Owned Segregated into Non-Covered and Covered Properties (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Real Estate Properties [Line Items]
Real estate owned acquired by foreclosure	$ 64,706	$ 88,546
Real estate acquired for development or resale	18,586	9,206
Other foreclosed property	1,187	1,421
Total other real estate owned and foreclosed property	84,479	99,173
Non-covered Properties [Member]
Real Estate Properties [Line Items]
Real estate owned acquired by foreclosure	25,135	28,072
Real estate acquired for development or resale	18,586	9,206
Other foreclosed property	216	93
Total other real estate owned and foreclosed property	43,937	37,371
Covered Properties [Member]
Real Estate Properties [Line Items]
Real estate owned acquired by foreclosure	39,571	60,474
Real estate acquired for development or resale
Other foreclosed property	971	1,328
Total other real estate owned and foreclosed property	$ 40,542	$ 61,802

XML

Loans Receivable - Schedule of Aging of Non-Covered Loans (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Non-Covered Loans Excluding Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	$ 10,744	$ 13,426
Past Due, 60-89 days	3,238	7,965
Past Due, Greater than 90 days	34,207	44,762
Total Past Due	48,189	66,153
Current	8,786,543	8,222,168
Total Non-covered Loans, Net of Unearned Income	8,834,732	8,288,321
Recorded Investment > 90 days and Accruing	20	1,075
Non-Covered Loans Excluding Acquired Loans [Member] | Commercial Real Estate Construction [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	56
Past Due, 60-89 days	223
Past Due, Greater than 90 days	1,349	1,803
Total Past Due	1,628	1,803
Current	591,233	381,292
Total Non-covered Loans, Net of Unearned Income	592,861	383,095
Recorded Investment > 90 days and Accruing
Non-Covered Loans Excluding Acquired Loans [Member] | Commercial Real Estate - Other [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	387	6,098
Past Due, 60-89 days	112	5,630
Past Due, Greater than 90 days	4,331	7,650
Total Past Due	4,830	19,378
Current	2,828,295	2,732,431
Total Non-covered Loans, Net of Unearned Income	2,833,125	2,751,809
Recorded Investment > 90 days and Accruing		2
Non-Covered Loans Excluding Acquired Loans [Member] | Commercial Business [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	3,742	2,117
Past Due, 60-89 days	56	423
Past Due, Greater than 90 days	4,191	15,020
Total Past Due	7,989	17,560
Current	2,953,471	2,888,491
Total Non-covered Loans, Net of Unearned Income	2,961,460	2,906,051
Recorded Investment > 90 days and Accruing
Non-Covered Loans Excluding Acquired Loans [Member] | Residential Prime [Member] | Residential Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	2,581	1,104
Past Due, 60-89 days	1,455	852
Past Due, Greater than 90 days	10,593	9,684
Total Past Due	14,629	11,640
Current	326,077	286,167
Total Non-covered Loans, Net of Unearned Income	340,706	297,807
Recorded Investment > 90 days and Accruing	20	1,073
Non-Covered Loans Excluding Acquired Loans [Member] | Home Equity [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	1,518	1,956
Past Due, 60-89 days	703	569
Past Due, Greater than 90 days	7,949	6,808
Total Past Due	10,170	9,333
Current	1,163,216	1,091,894
Total Non-covered Loans, Net of Unearned Income	1,173,386	1,101,227
Recorded Investment > 90 days and Accruing
Non-Covered Loans Excluding Acquired Loans [Member] | Indirect Automobile [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	1,611	1,427
Past Due, 60-89 days	322	293
Past Due, Greater than 90 days	1,192	1,275
Total Past Due	3,125	2,995
Current	388,356	370,388
Total Non-covered Loans, Net of Unearned Income	391,481	373,383
Recorded Investment > 90 days and Accruing
Non-Covered Loans Excluding Acquired Loans [Member] | Consumer - Other [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	567	458
Past Due, 60-89 days	209	106
Past Due, Greater than 90 days	542	485
Total Past Due	1,318	1,049
Current	356,189	293,693
Total Non-covered Loans, Net of Unearned Income	357,507	294,742
Recorded Investment > 90 days and Accruing
Non-Covered Loans Excluding Acquired Loans [Member] | Residential Subprime [Member] | Residential Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days
Past Due, 60-89 days
Past Due, Greater than 90 days	3,111	1,626
Total Past Due	3,111	1,626
Current	115,835	114,939
Total Non-covered Loans, Net of Unearned Income	118,946	116,565
Recorded Investment > 90 days and Accruing
Non-Covered Loans Excluding Acquired Loans [Member] | Credit Card [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	282	266
Past Due, 60-89 days	158	92
Past Due, Greater than 90 days	949	411
Total Past Due	1,389	769
Current	63,871	62,873
Total Non-covered Loans, Net of Unearned Income	65,260	63,642
Recorded Investment > 90 days and Accruing
Non-Covered Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	8,151	3,251
Past Due, 60-89 days	3,901	2,580
Past Due, Greater than 90 days	45,064	37,265
Total Past Due	57,116	43,096
Current	1,495,447	506,422
Discount	(74,207)	(65,613)
Total Non-covered Loans, Net of Unearned Income	1,478,356	483,905
Recorded Investment > 90 days and Accruing	31,410	37,265
Non-Covered Acquired Loans [Member] | Commercial Real Estate Construction [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days		388
Past Due, 60-89 days	597
Past Due, Greater than 90 days	2,183	2,542
Total Past Due	2,780	2,930
Current	35,403	19,833
Discount	(2,536)	(2,532)
Total Non-covered Loans, Net of Unearned Income	35,647	20,231
Recorded Investment > 90 days and Accruing	2,090	2,542
Non-Covered Acquired Loans [Member] | Commercial Real Estate - Other [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	3,584	1,798
Past Due, 60-89 days	628	1,963
Past Due, Greater than 90 days	23,144	27,967
Total Past Due	27,356	31,728
Current	511,672	345,286
Discount	(51,217)	(52,176)
Total Non-covered Loans, Net of Unearned Income	487,811	324,838
Recorded Investment > 90 days and Accruing	21,592	27,967
Non-Covered Acquired Loans [Member] | Commercial Business [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	1,944	544
Past Due, 60-89 days	281
Past Due, Greater than 90 days	2,212	1,218
Total Past Due	4,437	1,762
Current	136,130	54,189
Discount	(6,941)	(2,914)
Total Non-covered Loans, Net of Unearned Income	133,626	53,037
Recorded Investment > 90 days and Accruing	2,172	1,218
Non-Covered Acquired Loans [Member] | Residential Prime [Member] | Residential Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	331
Past Due, 60-89 days	1,378
Past Due, Greater than 90 days	6,703	226
Total Past Due	8,412	226
Current	508,678	18,796
Discount	6,269	(887)
Total Non-covered Loans, Net of Unearned Income	523,359	18,135
Recorded Investment > 90 days and Accruing	525	226
Non-Covered Acquired Loans [Member] | Home Equity [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	1,260	313
Past Due, 60-89 days	622	516
Past Due, Greater than 90 days	8,667	4,242
Total Past Due	10,549	5,071
Current	180,703	53,995
Discount	(7,565)	(5,623)
Total Non-covered Loans, Net of Unearned Income	183,687	53,443
Recorded Investment > 90 days and Accruing	4,629	4,242
Non-Covered Acquired Loans [Member] | Indirect Automobile [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	28	33
Past Due, 60-89 days
Past Due, Greater than 90 days	59	95
Total Past Due	87	128
Current	850	1,725
Discount	(63)
Total Non-covered Loans, Net of Unearned Income	874	1,853
Recorded Investment > 90 days and Accruing	59	95
Non-Covered Acquired Loans [Member] | Consumer - Other [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due, 30-59 days	1,004	175
Past Due, 60-89 days	395	101
Past Due, Greater than 90 days	2,096	975
Total Past Due	3,495	1,251
Current	122,011	12,598
Discount	(12,154)	(1,481)
Total Non-covered Loans, Net of Unearned Income	113,352	12,368
Recorded Investment > 90 days and Accruing	$ 343	$ 975

XML

Commitments and Contingencies - Summary of Financial Instruments Outstanding (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Reserve for unfunded lending commitments	$ 11,260	$ 11,147	$ 10,342	$ 0
Credit Risk Contract [Member]
Loss Contingencies [Line Items]
Commitments to grant loans	334,186	221,627
Unfunded commitments under lines of credit	3,534,055	3,326,448
Commercial and standby letters of credit	124,870	105,026
Reserve for unfunded lending commitments	$ 11,260	$ 11,147

XML

Investment Securities - Schedule of Securities in Other Assets on Company's Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]
Federal Home Loan Bank (FHLB) stock	$ 44,715	$ 24,369
Federal Reserve Bank (FRB) stock	28,098	28,098
Other investments	3,306	1,306
Total	$ 76,119	$ 53,773

XML

Share-Based Compensation - Additional Information (Detail) (USD $)	6 Months Ended							3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Employee Stock Option [Member]	Jun. 30, 2014 Restricted Stock [Member]	Jun. 30, 2013 Restricted Stock [Member]	Mar. 31, 2014 Phantom Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards settled in cash	$ 0	$ 0
Share-based compensation maximum option term (in years)	10 years
Future awards shares under approved incentive compensation plans	1,033,625
Minimum vesting period (in years)	1 year 6 months							5 years
Maximum vesting period (in years)	7 years							7 years
Excess tax benefits as financing cash inflows	945,000	417,000
Net cash proceeds from exercise of stock options	9,240,000	4,238,000
Unearned share-based compensation associated with awards					4,200,000	24,800,000	25,400,000
Unrecognized compensation cost related to stock options expected to be recognized over a weighted-average period					5 years 3 months 18 days
Aggregate intrinsic value of shares underlying outstanding stock options	13,300,000
Aggregate intrinsic value of shares underlying exercisable stock options	8,900,000
Total intrinsic value of options exercised	$ 3,500,000	$ 1,600,000
Unearned compensation vesting period (in years)			7 years	3 years

XML

Transfers and Servicing of Financial Assets (Including Mortgage Banking Activity) (Tables)

6 Months Ended

Jun. 30, 2014

Components of Mortgage Banking Activity

The following table details the mortgage banking activity as of and for the six months ended June 30:

(Dollars in thousands)	2014			2013
Balance at beginning of period	$	128,442		$	267,475
Originations and purchases		760,658			1,207,676
Sales, net of gains		(705,732	)		(1,313,120	)
Other		(4,988	)		—
Balance at end of period	$	178,380		$	162,031

(Dollars in thousands)	2014		2013
Fair value changes of derivatives and mortgage loans held for sale, net	$	3,383	$	(1,431	)
Gains on sales		24,397		37,790
Servicing and other income, net		309		280
Total mortgage income	$	28,089	$	36,639

Schedule of Definite-Lived Intangible Assets

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

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core deposit intangibles	$	50,564	$	(33,135	)	$	17,429	$	45,406	$	(30,784	)	$	14,622
Customer relationship intangible asset		1,398		(780	)		618		1,348		(631	)		717
Non-compete agreement		163		(25	)		138		—		—			—
Other intangible assets		255		(62	)		193		—		—			—
Total	$	52,380	$	(34,002	)	$	18,378	$	46,754	$	(31,415	)	$	15,339

Mortgage Servicing Rights [Member]

Schedule of Definite-Lived Intangible Assets

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

	June 30, 2014							December 31, 2013
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Mortgage servicing rights	$	2,484	$	(887	)	$	1,597	$	2,146	$	(638	)	$	1,508

XML

Acquisition Activity - Additional Information (Detail) (USD $)	0 Months Ended	6 Months Ended			0 Months Ended	6 Months Ended		0 Months Ended	6 Months Ended	0 Months Ended			0 Months Ended
	Jan. 17, 2014 Trust	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	May 31, 2014 Teche [Member]	Jun. 30, 2014 Teche [Member] Branch	May 31, 2014 Teche [Member]	Jun. 30, 2014 First Private [Member] Branch	Jun. 30, 2014 First Private [Member]	Jun. 30, 2014 First Private [Member] Mobile Branches [Member] Branch	Feb. 24, 2014 Title Company LLC [Member]	Feb. 24, 2014 Title Company LLC [Member]	May 01, 2014 Louisiana Abstract and Title, LLC [Member]	May 01, 2014 Louisiana Abstract and Title, LLC [Member]
Business Acquisition [Line Items]
Cash payment to acquire business	$ 91,600,000					$ 714,000			$ 1,000		$ 400,000		$ 200,000
Goodwill	8,400,000	524,154,000	401,872,000	401,872,000		84,432,000	84,400,000		28,660,000			200,000		200,000
Number of branches acquired	4
Maximum period for subject to change estimated fair values after acquisition date		1 year
Shares received							1.162		0.270
Total consideration paid					156,700,000	156,740,000		58,600,000	58,640,000
Business combination date of acquisition						May 31, 2014			Jun. 30, 2014
Number of branches						20		4		2
Goodwill created in the acquisition deductible for income tax purposes							$ 0		$ 0

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Capital Requirements and Other Regulatory Matters

6 Months Ended

Jun. 30, 2014

Banking And Thrift [Abstract]

Capital Requirements and Other Regulatory Matters

NOTE 14 – CAPITAL REQUIREMENTS AND OTHER REGULATORY MATTERS

The Company and IBERIABANK are subject to various regulatory capital requirements administered by the 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 financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and IBERIABANK 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. Prompt corrective action provisions are not applicable to bank holding companies.

Quantitative measures established by regulation to ensure capital adequacy require the Company and IBERIABANK to maintain minimum amounts and ratios of total and Tier 1 capital to risk-weighted assets and of Tier 1 capital to average assets. Management believes, as of June 30, 2014 and December 31, 2013, that the Company and IBERIABANK met all capital adequacy requirements to which they are subject.

As of June 30, 2014, the most recent notification from the Federal Deposit Insurance Corporation categorized IBERIABANK as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based 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 June 30, 2014 and December 31, 2013 are presented in the following table.

	June 30, 2014
	Minimum					Well Capitalized					Actual
(Dollars in thousands)	Amount		Ratio			Amount		Ratio			Amount		Ratio
Tier 1 Leverage
Consolidated	$	539,674		4.00	%	$	N/A		N/A	%	$	1,353,676		10.03	%
IBERIABANK		537,718		4.00			672,147		5.00			1,196,630		8.90
Tier 1 risk-based capital
Consolidated	$	481,972		4.00	%	$	N/A		N/A	%	$	1,353,676		11.23	%
IBERIABANK		480,157		4.00			720,236		6.00			1,196,630		9.97
Total risk-based capital
Consolidated	$	963,943		8.00	%	$	N/A		N/A	%	$	1,498,467		12.44	%
IBERIABANK		960,315		8.00			1,200,393		10.00			1,341,421		11.17
	December 31, 2013
	Minimum					Well Capitalized					Actual
	Amount		Ratio			Amount		Ratio			Amount		Ratio
Tier 1 Leverage
Consolidated	$	507,760		4.00	%	$	N/A		N/A	%	$	1,231,886		9.70	%
IBERIABANK		505,723		4.00			632,154		5.00			1,069,783		8.46
Tier 1 risk-based capital
Consolidated	$	426,002		4.00	%	$	N/A		N/A	%	$	1,231,886		11.57	%
IBERIABANK		424,578		4.00			636,868		6.00			1,069,783		10.08
Total risk-based capital
Consolidated	$	852,005		8.00	%	$	N/A		N/A	%	$	1,365,280		12.82	%
IBERIABANK		849,157		8.00			1,061,446		10.00			1,202,738		11.33

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Business Segments

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Business Segments

NOTE 19 – BUSINESS SEGMENTS

Each of the Company’s reportable operating segments is a business unit that 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 are subject to evaluation by the chief operating decision maker in deciding how to allocate resources to segments. The Company reports the results of its operations through three business segments: IBERIABANK, IMC, 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 that are not specifically related to a strategic business unit. The IMC 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 means that reflect utilization.

Also within IBERIABANK are certain reconciling items in order to translate reportable segment results into consolidated results. The following tables present certain information regarding our 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.

IBERIABANK is considered a reportable segment based on the quantitative thresholds specified within ASC Topic 280, Segment Reporting (“ASC 280”). The Company’s wealth management, capital markets and trust operating segments are aggregated within the IBERIABANK reportable operating segment because they do not meet the thresholds specified by ASC 280 and based on the qualitative factors presented within ASC 280. The Company’s IMC and LTC segments do not meet the quantitative thresholds specified by ASC 280, but are reported because management believes information about those segments is useful to users of the financial statements.

	Three Months Ended June 30, 2014
(Dollars in thousands)	IBERIABANK			IMC			LTC		Consolidated
Interest income	$	117,544		$	1,676		$	—	$	119,220
Interest expense		9,764			477			—		10,241
Net interest income		107,780			1,199			—		108,979
(Reversal of) Provision for loan losses		4,764			(16	)		—		4,748
Mortgage income		88			17,869			—		17,957
Title income		—			—			5,262		5,262
Other non-interest income		24,757			(13	)		—		24,744
Core deposit intangible amortization		1,185			—			—		1,185
Allocated expenses		(3,595	)		2,544			1,051		—
Other non-interest expenses		110,355			11,635			4,200		126,190
Income before income taxes		19,916			4,892			11		24,819
Income tax expense		4,339			1,923			9		6,271
Net income	$	15,577		$	2,969		$	2	$	18,548
Total loans and loans held for sale	$	10,875,895		$	201,012		$	—	$	11,076,907
Total assets		15,067,545			232,403			25,094		15,325,042
Total deposits		11,976,403			4,780			—		11,981,183
Average assets		13,832,987			183,838			24,737		14,041,562

	Three Months Ended June 30, 2013
(Dollars in thousands)	IBERIABANK			IMC		LTC		Consolidated
Interest income	$	106,668		$	1,495	$	14	$	108,177
Interest expense		11,106			589		—		11,695
Net interest income		95,562			906		14		96,482
Provision for loan losses		1,807			—		—		1,807
Mortgage income		(2	)		17,710		—		17,708
Title income		—			—		5,696		5,696
Other non-interest income		19,084			1		—		19,085
Core deposit intangible amortization		1,125			—		—		1,125
Allocated expenses		(882	)		649		233		—
Other non-interest expenses		97,435			14,469		4,332		116,236
Income before income taxes		15,159			3,499		1,145		19,803
Income tax expense		2,389			1,374		450		4,213
Net income	$	12,770		$	2,125	$	695	$	15,590
Total loans and loans held for sale	$	8,889,618		$	175,449	$	—	$	9,065,068
Total assets		12,592,635			205,069		25,799		12,823,503
Total deposits		10,638,853			2,865		—		10,641,718
Average assets		12,650,402			205,677		25,472		12,881,551

	Six Months Ended June 30, 2014
(Dollars in thousands)	IBERIABANK			IMC			LTC			Consolidated
Interest income	$	230,692		$	2,758		$	1		$	233,451
Interest expense		19,367			698			—			20,065
Net interest income		211,325			2,060			1			213,386
(Reversal of) Provision for loan losses		6,860			(9	)		—			6,851
Mortgage income		85			28,004			—			28,089
Title income		—			—			9,429			9,429
Other non-interest income		46,150			(24	)		—			46,126
Core deposit intangible amortization		2,350			—			—			2,350
Allocated expenses		(6,725	)		4,735			1,990			—
Other non-interest expenses		202,429			21,934			8,089			232,452
Income (loss) before income taxes		52,646			3,380			(649	)		55,377
Income tax expense (benefit)		13,343			1,335			(244	)		14,434
Net income (loss)	$	39,303		$	2,045		$	(405	)	$	40,943
Total loans and loans held for sale	$	10,875,895		$	201,012		$	—		$	11,076,907
Total assets		15,067,545			232,403			25,094			15,325,042
Total deposits		11,976,403			4,780			—			11,981,183
Average assets		13,517,696			161,571			24,854			13,704,121

	Six Months Ended June 30, 2013
(Dollars in thousands)	IBERIABANK			IMC			LTC		Consolidated
Interest income	$	211,595		$	2,969		$	29	$	214,593
Interest expense		24,055			1,184			—		25,239
Net interest income		187,540			1,785			29		189,354
(Reversal of) Provision for loan losses		(1,548	)		(21	)		—		(1,569	)
Mortgage income		(3	)		36,642			—		36,639
Title income		—			—			10,717		10,717
Other non-interest income		39,628			(4	)		—		39,624
Core deposit intangible amortization		2,250			—			—		2,250
Allocated expenses		(1,745	)		1,280			465		—
Other non-interest expenses		224,476			26,926			8,607		260,009
Income before income taxes		3,732			10,238			1,674		15,644
Income tax expense (benefit)		(5,343	)		4,019			661		(663	)
Net income	$	9,075		$	6,219		$	1,013	$	16,307
Total loans and loans held for sale	$	8,889,619		$	175,449		$	—	$	9,065,068
Total assets		12,592,635			205,069			25,799		12,823,503
Total deposits		10,638,853			2,865			—		10,641,718
Average assets		12,740,709			211,923			25,113		12,977,745

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Share-Based Compensation - Activity Related to Stock Options (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Number of shares, Outstanding options, Beginning balance	1,072,829	1,236,075
Number of shares, Outstanding options, Granted	75,956	75,722
Number of shares, Outstanding options, Exercised	(196,734)	(116,324)
Number of shares, Outstanding options, Forfeited or expired	(8,577)	(31,270)
Number of shares, Outstanding options, Ending balance	943,474	1,164,203
Number of shares, Exercisable options	614,361	774,446
Weighted Average Exercise Price, Outstanding options, Beginning balance	$ 53.47	$ 51.48
Weighted Average Exercise Price, Outstanding options, Granted	$ 65.23	$ 52.36
Weighted Average Exercise Price, Outstanding options, Exercised	$ 47.98	$ 36.43
Weighted Average Exercise Price, Outstanding options, Forfeited or expired	$ 64.82	$ 55.39
Weighted Average Exercise Price, Outstanding options, Ending balance	$ 55.46	$ 52.94
Weighted Average Exercise Price, Exercisable options	$ 55.37	$ 52.73
Weighted Average Remaining Contract Life, Outstanding options	5 years 3 months 18 days	4 years 10 months 24 days
Weighted Average Remaining Contract Life, Exercisable options	3 years 9 months 18 days	3 years 4 months 24 days

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Earnings Per Share - Schedule of Basic Earnings Per Common Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Distributed earnings to common shareholders	$ 11,184	$ 9,914	$ 21,214	$ 19,810
Undistributed earnings (distributed capital) to common shareholders	7,078	5,386	19,048	(3,816)
Total earnings to common shareholders	18,262	15,300	40,262	15,994
Distributed earnings per common share	$ 0.37	$ 0.34	$ 0.71	$ 0.68
Undistributed earnings (distributed capital) per common share	$ 0.23	$ 0.19	$ 0.64	$ (0.13)
Total earnings per common share - basic	$ 0.60	$ 0.53	$ 1.35	$ 0.55
Unvested Restricted Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Distributed earnings to common shareholders	175	188	359	387
Undistributed earnings (distributed capital) to common shareholders	111	102	322	(74)
Total earnings allocated to restricted stock	$ 286	$ 290	$ 681	$ 313
Distributed earnings per common share	$ 0.33	$ 0.33	$ 0.67	$ 0.68
Undistributed earnings (distributed capital) per common share	$ 0.21	$ 0.18	$ 0.60	$ (0.13)
Total earnings per common share - basic	$ 0.54	$ 0.51	$ 1.27	$ 0.55

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Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities, Assets	$ 2,008,953	$ 1,936,797
Mortgage loans held for sale, Assets	178,380	97,273
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities, Assets	2,008,953	1,936,797
Mortgage loans held for sale, Assets	178,380	97,273
Derivative instruments, Assets	40,291	30,076
Total, Assets	2,227,624	2,064,146
Derivative instruments, Liabilities	37,568	26,735
Total, Liabilities	37,568	26,735
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities, Assets		15,496
Mortgage loans held for sale, Assets
Derivative instruments, Assets
Total, Assets		15,496
Derivative instruments, Liabilities
Total, Liabilities
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities, Assets	2,008,953	1,921,301
Mortgage loans held for sale, Assets	178,380	97,273
Derivative instruments, Assets	40,291	30,076
Total, Assets	2,227,624	2,048,650
Derivative instruments, Liabilities	37,568	26,735
Total, Liabilities	37,568	26,735
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities, Assets
Mortgage loans held for sale, Assets
Derivative instruments, Assets
Total, Assets
Derivative instruments, Liabilities
Total, Liabilities

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2014

Commitments And Contingencies Disclosure [Abstract]

Summary of Financial Instruments Outstanding

At June 30, 2014 and December 31, 2013, the Company had the following financial instruments outstanding, whose contract amounts represent credit risk:

(Dollars in thousands)	June 30 2014		December 31 2013
Commitments to grant loans	$	334,186	$	221,627
Unfunded commitments under lines of credit		3,534,055		3,326,448
Commercial and standby letters of credit		124,870		105,026
Reserve for unfunded lending commitments		11,260		11,147

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Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale, Assets	$ 178,380	$ 97,273
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, Assets	2,045	3,070
Mortgage loans held for sale, Assets	200	11,876
OREO, Assets	10,407	14,598
Total, Assets	12,452	29,544
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, Assets
Mortgage loans held for sale, Assets
OREO, Assets
Total, Assets
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, Assets	2,045	3,070
Mortgage loans held for sale, Assets	200	11,876
OREO, Assets	10,407	14,598
Total, Assets	12,452	29,544
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, Assets
Mortgage loans held for sale, Assets
OREO, Assets
Total, Assets

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Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
Beginning balance at Dec. 31, 2012	$ 1,529,868	$ 31,917	$ 1,176,180	$ 411,472	$ 24,477	$ (114,178)
Beginning balance, Shares at Dec. 31, 2012		31,917,385				2,427,640
Net income	16,307			16,307
Other comprehensive income (loss)	(29,389)				(29,389)
Cash dividends declared, $0.68 and $0.68 per share for six months ended June 30,2013 and June 30,2014 respectively.	(20,197)			(20,197)
Reissuance of treasury stock under incentive plans, net of shares surrendered in payment, including tax benefit	2,911		(1,120)			4,031
Reissuance of treasury stock under incentive plans, Shares						(220,313)
Common stock issued for recognition and retention plans			(7,962)			7,962
Share-based compensation cost	5,261		5,261
Ending balance at Jun. 30, 2013	1,504,761	31,917	1,172,359	407,582	(4,912)	(102,185)
Ending balance, Shares at Jun. 30, 2013		31,917,385				2,207,327
Beginning balance at Dec. 31, 2013	1,530,979	31,917	1,178,284	436,141	(16,491)	(98,872)
Beginning balance, Shares at Dec. 31, 2013		31,917,385				2,130,841
Net income	40,943			40,943
Other comprehensive income (loss)	21,184				21,184
Cash dividends declared, $0.68 and $0.68 per share for six months ended June 30,2013 and June 30,2014 respectively.	(21,573)			(21,573)
Reissuance of treasury stock under incentive plans, net of shares surrendered in payment, including tax benefit	7,186		1,797			5,389
Reissuance of treasury stock under incentive plans, Shares						(278,022)
Common stock issued for acquisitions	214,665	3,346	211,319
Common stock issued for acquisitions, Shares		3,345,516
Common stock issued for recognition and retention plans			(6,225)			6,225
Share-based compensation cost	5,922		5,922
Ending balance at Jun. 30, 2014	$ 1,799,306	$ 35,263	$ 1,391,097	$ 455,511	$ 4,693	$ (87,258)
Ending balance, Shares at Jun. 30, 2014		35,262,901				1,852,819

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Derivative Instruments and Other Hedging Activities - Reconciliation of Gross Amounts in Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts	$ 33,298	$ 26,422
Derivative liabilities subject to master netting arrangements, Gross Amounts	14,653	10,620
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset	33,298	26,422
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset	10,593	5,201
Derivatives [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset
Collateral [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset	(4,060)	(5,419)
Interest Rate Contracts [Member] | Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts
Derivative liabilities subject to master netting arrangements, Gross Amounts	0	0
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset	0	0
Interest Rate Contracts [Member] | Not Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts	14,653	10,621
Derivative liabilities subject to master netting arrangements, Gross Amounts	14,653	10,620
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset	14,653	10,621
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset	10,593	5,201
Interest Rate Contracts [Member] | Derivatives [Member] | Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset
Interest Rate Contracts [Member] | Derivatives [Member] | Not Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset
Interest Rate Contracts [Member] | Collateral [Member] | Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset	0
Interest Rate Contracts [Member] | Collateral [Member] | Not Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset
Derivative liabilities subject to master netting arrangements, Gross Amounts Not Offset	(4,060)	(5,419)
Written and Purchased Options [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts	18,645	15,801
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset	18,645	15,801
Written and Purchased Options [Member] | Derivatives [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset
Written and Purchased Options [Member] | Collateral [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets subject to master netting arrangements, Gross Amounts Not Offset

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Earnings Per Share

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Earnings Per Share

NOTE 3 – EARNINGS PER SHARE

Share-based payment awards that entitle holders to receive non-forfeitable dividends before vesting are considered participating securities and thus included in the calculation of basic earnings per share. These awards are included in the calculation of basic earnings per share under the two-class method. The two-class method allocates earnings for the period between common shareholders and other participating securities holders. The participating awards receiving dividends will be allocated the same amount of income as if they were outstanding shares.

The following table presents the calculation of basic and diluted earnings per share for the periods indicated.

	For the Three Months Ended June 30						For the Six Months Ended June 30
	2014			2013			2014			2013
(Dollars in thousands, except per share data)
Income available to common shareholders	$	18,548		$	15,590		$	40,943		$	16,307
Distributed earnings (capital) to unvested restricted stock		(286	)		(290	)		(681	)		(313	)
Distributed earnings (capital) to common shareholders – basic		18,262			15,300			40,262			15,994
Undistributed earnings reallocated to unvested restricted stock		(12	)		(3	)		(18	)		—
Distributed and undistributed earnings to common shareholders – diluted	$	18,250		$	15,297		$	40,244		$	15,994
Weighted average shares outstanding – basic (1)		30,787,520			29,610,315			30,303,294			29,556,810
Weighted average shares outstanding – diluted		30,386,105			29,066,906			29,904,370			29,023,002
Earnings per common share – basic	$	0.60		$	0.53		$	1.35		$	0.55
Earnings per common share – diluted		0.60			0.53			1.35			0.55
Earnings per unvested restricted stock share – basic		0.54			0.51			1.27			0.55
Earnings per unvested restricted stock share – diluted		0.56			0.52			1.31			0.55

(1) Weighted average basic shares outstanding include 527,605 and 567,162 shares of unvested restricted stock for the three months ended June 30, 2014 and 2013, respectively, and 535,442 and 565,860 shares for the six months ended June 30, 2014 and 2013, respectively.

Additional information on the Company’s basic earnings per common share is shown in the following table.

	For the Three Months Ended June 30				For the Six Months Ended June 30
	2014		2013		2014		2013
(Dollars in thousands, except per share data)
Distributed earnings to common shareholders	$	11,184	$	9,914	$	21,214	$	19,810
Undistributed earnings (distributed capital) to common shareholders		7,078		5,386		19,048		(3,816	)
Total earnings to common shareholders	$	18,262	$	15,300	$	40,262	$	15,994
Distributed earnings to unvested restricted stock	$	175	$	188	$	359	$	387
Undistributed earnings (distributed capital) to unvested restricted stock		111		102		322		(74	)
Total earnings allocated to restricted stock	$	286	$	290	$	681	$	313
Distributed earnings per common share	$	0.37	$	0.34	$	0.71	$	0.68
Undistributed earnings (distributed capital) per common share		0.23		0.19		0.64		(0.13	)
Total earnings per common share – basic	$	0.60	$	0.53	$	1.35	$	0.55
Distributed earnings per unvested restricted stock share	$	0.33	$	0.33	$	0.67	$	0.68
Undistributed earnings (distributed capital) per unvested restricted stock share		0.21		0.18		0.60		(0.13	)
Total earnings per unvested restricted stock share – basic	$	0.54	$	0.51	$	1.27	$	0.55

For the three months ended June 30, 2014 and 2013, the calculations for basic shares outstanding exclude the weighted average shares owned by the Recognition and Retention Plan (“RRP”) of 629,055 and 652,683, respectively, and are adjusted for the weighted average shares in treasury stock of 1,861,247 and 2,221,550, respectively. For the six months ended June 30, 2014 and 2013, basic shares outstanding exclude 634,883 and 647,332 shares owned by the RRP, respectively, and are adjusted for 1,933,367 and 2,279,103 shares, respectively, of weighted average shares of treasury stock.

The effects from the assumed exercises of 11,623 and 792,893 stock options were not included in the computation of diluted earnings per share for the three months ended June 30, 2014 and 2013, respectively, because such amounts would have had an antidilutive effect on earnings per common share. For the six months ended June 30, 2014 and 2013, the effects from the assumed exercise of 11,623 and 787,893 stock options, respectively, was not included in the computation of diluted earnings per share because such amounts would have had an antidilutive effect on earnings per common share.

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Investment Securities - Additional Information (Detail) (USD $) In Billions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014 Security	Dec. 31, 2013 Bonds Security
Net Investment Income [Line Items]
Pledged securities, carrying values	$ 1.5	$ 1.5
Number of debt securities, held	113	207
Unrealized losses on debt securities, percent of amortized cost	1.99%	3.23%
Unrealized losses on debt securities, percent of Company's total amortized cost	0.80%	2.07%
Unrated revenue municipal bond		1
Impairment of par value bond, percentage	50.00%
Obligations of State and Political Obligations [Member]
Net Investment Income [Line Items]
Number of securities, continuous loss position, over twelve months	11
Number of securities, credit ratings	10

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Goodwill and Other Acquired Intangible Assets - Schedule of Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jan. 17, 2014
Goodwill And Other Intangibles [Line Items]
Beginning Balance	$ 401,872	$ 401,872	$ 8,400
Goodwill acquired during the period	122,282	0
Ending Balance	524,154	401,872	8,400
IBERIABANK [Member]
Goodwill And Other Intangibles [Line Items]
Beginning Balance	373,905	373,905
Goodwill acquired during the period	121,906	0
Ending Balance	495,811	373,905
IMC [Member]
Goodwill And Other Intangibles [Line Items]
Beginning Balance	23,178	23,178
Goodwill acquired during the period	0	0
Ending Balance	23,178	23,178
LTC [Member]
Goodwill And Other Intangibles [Line Items]
Beginning Balance	4,789	4,789
Goodwill acquired during the period	376	0
Ending Balance	$ 5,165	$ 4,789

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Fair Value Measurements - Gains and Losses Included in Earnings Related to Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Other Comprehensive Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total gains (losses) included in earnings (or changes in net assets)
Change in unrealized gains (losses) relating to assets still held at June 30, 2014	21,184
Noninterest Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total gains (losses) included in earnings (or changes in net assets)	3,410
Change in unrealized gains (losses) relating to assets still held at June 30, 2014

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Loans Receivable - Schedule of Carrying Amount of Loans Acquired (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contractually required principal and interest at acquisition	$ 98,097
Nonaccretable difference (expected losses and foregone interest)	(4,558)
Cash flows expected to be collected at acquisition	93,539
Accretable yield	(9,778)
Basis in acquired loans at acquisition	83,761
Acquired Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contractually required principal and interest at acquisition	82,967
Nonaccretable difference (expected losses and foregone interest)	(4,197)
Cash flows expected to be collected at acquisition	78,770
Accretable yield	(8,242)
Basis in acquired loans at acquisition	70,528
Acquired Performing Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contractually required principal and interest at acquisition	15,130
Nonaccretable difference (expected losses and foregone interest)	(361)
Cash flows expected to be collected at acquisition	14,769
Accretable yield	(1,536)
Basis in acquired loans at acquisition	$ 13,233

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Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2014

Accounting Policies [Abstract]

Principles of Consolidation

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, IBERIABANK, Lenders Title Company (“LTC”), IBERIA Capital Partners L.L.C. (“ICP”), IB Aircraft Holdings, LLC, 1887 Leasing LLC, IBERIA Asset Management, Inc. (“IAM”), and IBERIA CDE, L.L.C. (“CDE”). All significant intercompany balances and transactions have been eliminated in consolidation. All normal, recurring adjustments which, in the opinion of management, are necessary for a fair presentation of the financial statements have been included. Certain amounts reported in prior periods have been reclassified to conform to the current period presentation.

Nature of Operations

NATURE OF OPERATIONS

The Company offers commercial and retail banking products and services to customers throughout locations in six states through IBERIABANK. The Company also operates mortgage production offices in twelve states through IBERIABANK Mortgage Company (“IMC”), and offers a full line of title insurance and closing services throughout Arkansas and Louisiana through LTC and its subsidiaries. ICP provides equity research, institutional sales and trading, and corporate finance services. 1887 Leasing LLC owns an aircraft used by management of the Company, and IB Aircraft Holdings, LLC owns a fractional share of a separate aircraft also used by management. IAM provides wealth management and trust services for commercial and private banking clients. CDE is engaged in the purchase of tax credits.

Use of Estimates

USE OF ESTIMATES

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Material estimates that are susceptible to significant change in the near term are the allowance for credit losses, valuation of and accounting for loans covered by loss sharing arrangements with the FDIC and the related loss share receivables, valuation of and accounting for acquired loans, and valuation of goodwill, intangible assets and other purchase accounting adjustments.

Concentration of Credit Risks

CONCENTRATION OF CREDIT RISKS

Most of the Company’s business activity is with customers located within the States of Louisiana, Florida, Arkansas, Alabama, Texas, and Tennessee. The Company’s lending activity is concentrated in its market areas in those states. The Company has emphasized originations of commercial loans and private banking loans, defined as loans to larger consumer clients. Repayments on loans are expected to come from cash flows of the borrower and/or guarantor. Losses on secured loans are limited by the value of the collateral upon default of the borrowers. The Company does not have any significant concentrations to any one industry or customer.

Fair Value Measurements

FAIR VALUE MEASUREMENTS

The Company estimates fair value based on the assumptions market participants would use when selling an asset or transferring a liability and characterizes such measurements within the fair value hierarchy based on the inputs used to develop those assumptions and measure fair value. The hierarchy requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows:

• Level 1 – Quoted prices in active markets for identical assets or liabilities.

• Level 2 – Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.

• Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

A description of the valuation methodologies used for instruments measured at fair value follows, as well as the classification of such instruments within the valuation hierarchy.

Investment securities

Securities are classified within Level 1 where quoted market prices are available in an active market. Inputs include securities that have quoted prices in active markets for identical assets. If quoted market prices are unavailable, fair value is estimated using quoted prices of securities with similar characteristics, at which point the securities would be classified within Level 2 of the hierarchy. Examples may include certain collateralized mortgage and debt obligations.

Mortgage loans held for sale

Mortgage loans originated and held for sale, excluding loans held for sale that are recorded at fair value under the fair value option, are carried at the lower of cost or estimated fair value. When determining the fair value of loans held for sale, the Company obtains quotes or bids on these loans directly from purchasing financial institutions (Level 2). Mortgage loans held for sale that were recorded at estimated fair value are included in Note 17.

Impaired loans

Loans are measured for impairment using the methods permitted by Accounting Standards Codification (“ASC”) Topic 310. Fair value measurements are used in determining impairment using either the loan’s observable market price (Level 1), if available, or the fair value of the collateral if the loan is collateral dependent (Level 2). Measuring the impairment of loans using the present value of expected future cash flows, discounted at the loan’s effective interest rate, is not considered a fair value measurement. Fair value of the collateral is determined by appraisals or independent valuation.

Other real estate owned (OREO)

Fair values of OREO at June 30, 2014 and December 31, 2013 are determined by sales agreement or appraisal, and costs to sell are based on estimation per the terms and conditions of the sales agreement or amounts commonly used in real estate transactions. Inputs include appraisal values on the properties or recent sales activity for similar assets in the property’s market, and thus OREO measured at fair value would be classified within Level 2 of the hierarchy. The Company included property write-downs of $0.6 million and $1.4 million in earnings for the three months ended June 30, 2014 and 2013, respectively, and $1.4 million and $2.6 million for the six months ended June 30, 2014 and 2013, respectively.

Derivative financial instruments

The Company enters into commitments to originate loans whereby the interest rate on the prospective loan is determined prior to funding. Rate lock commitments on mortgage loans that are intended to be sold are considered to be derivatives. The Company offers its customers a certificate of deposit that provides the purchaser a guaranteed return of principal at maturity plus potential return, which allows the Company to identify a known cost of funds. The rate of return is based on an equity index, and as such represents an embedded derivative. Fair value of interest rate swaps, interest rate lock commitments, forward sales contracts, and equity-linked written and purchased options are estimated using prices of financial instruments with similar characteristics, and thus are classified within Level 2 of the fair value hierarchy.

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Allowance for Credit Losses and Credit Quality - Schedule of Allowance for Loan Losses for Covered Loan and Non-Covered Loan Portfolios (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	$ 143,074	$ 251,603
(Reversal of) Provision for loan losses before benefit/adjustment attributable to FDIC loss share agreements	3,253	(56,654)
Adjustment attributable to FDIC loss share arrangements	3,598	55,085
Net (reversal of) provision for loan losses	6,851	(1,569)
Adjustment attributable to FDIC loss share arrangements	(3,598)	(55,085)
Transfer of balance to OREO	(5,608)	(17,685)
Transfer of balance to the RULC		(9,828)
Loans charged-off	(10,773)	(6,583)
Recoveries	3,573	2,050
Balance at end of period	133,519	162,903
Balance at beginning of period	11,147	0
Transfer of balance from the allowance for loan losses		9,828
Provision for unfunded lending commitments	113	514
Balance at end of period	11,260	10,342
Non-Covered Loans Excluding Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	67,342	74,211
(Reversal of) Provision for loan losses before benefit/adjustment attributable to FDIC loss share agreements	5,078	(585)
Adjustment attributable to FDIC loss share arrangements
Net (reversal of) provision for loan losses	5,078	(585)
Adjustment attributable to FDIC loss share arrangements
Transfer of balance to OREO
Transfer of balance to the RULC		(9,828)
Loans charged-off	(5,198)	(4,249)
Recoveries	3,426	2,050
Balance at end of period	70,648	61,599
Balance at beginning of period	11,147	0
Transfer of balance from the allowance for loan losses		9,828
Provision for unfunded lending commitments	113	514
Balance at end of period	11,260	10,342
Non-Covered Acquired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	4,557	8,816
(Reversal of) Provision for loan losses before benefit/adjustment attributable to FDIC loss share agreements	(1,085)	(1,009)
Adjustment attributable to FDIC loss share arrangements
Net (reversal of) provision for loan losses	(1,085)	(1,009)
Adjustment attributable to FDIC loss share arrangements
Transfer of balance to OREO	(523)	(973)
Transfer of balance to the RULC
Loans charged-off	(182)
Recoveries	109
Balance at end of period	2,876	6,834
Balance at beginning of period
Transfer of balance from the allowance for loan losses
Provision for unfunded lending commitments
Balance at end of period
Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	71,175	168,576
(Reversal of) Provision for loan losses before benefit/adjustment attributable to FDIC loss share agreements	(740)	(55,060)
Adjustment attributable to FDIC loss share arrangements	3,598	55,085
Net (reversal of) provision for loan losses	2,858	25
Adjustment attributable to FDIC loss share arrangements	(3,598)	(55,085)
Transfer of balance to OREO	(5,085)	(16,712)
Transfer of balance to the RULC
Loans charged-off	(5,393)	(2,334)
Recoveries	38
Balance at end of period	59,995	94,470
Balance at beginning of period
Transfer of balance from the allowance for loan losses
Provision for unfunded lending commitments
Balance at end of period

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Shareholders' Equity and Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2014

Equity [Abstract]

Summary of Tax Effects of Each Component of Other Comprehensive Income

The following is a summary of the tax effects of each component of other comprehensive income for the periods indicated:

	Three Months Ended June 30, 2014
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding gains arising during the period	$	16,730		$	(5,856	)	$	10,874
Less: reclassification adjustment for gains included in net income		(8	)		3			(5	)
Net unrealized gains		16,722			(5,853	)		10,869
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	$	—		$	—		$	—
Less: reclassification adjustment for losses (gains) included in net income		—			—			—
Fair value of derivative instruments designated as cash flow hedges		—			—			—
Total other comprehensive income	$	16,722		$	(5,853	)	$	10,869

	Three Months Ended June 30, 2013
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding losses arising during the period	$	(42,303	)	$	14,806		$	(27,497	)
Less: reclassification adjustment for losses included in net income		66			(23	)		43
Net unrealized losses		(42,237	)		14,783			(27,454	)
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	$	(1,121	)	$	392		$	(729	)
Less: reclassification adjustment for gains included in net income		(33	)		12			(21	)
Fair value of derivative instruments designated as cash flow hedges		(1,154	)		404			(750	)
Total other comprehensive loss	$	(43,391	)	$	15,187		$	(28,204	)

	Six Months Ended June 30, 2014
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized loss on securities:
Unrealized holding gains arising during the period	$	32,618		$	(11,416	)	$	21,202
Less: reclassification adjustment for gains included in net income		(27	)		9			(18	)
Net unrealized gains		32,591			(11,407	)		21,184
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	$	—		$	—		$	—
Less: reclassification adjustment for losses (gains) included in net income		—			—			—
Fair value of derivative instruments designated as cash flow hedges		—			—			—
Total other comprehensive income	$	32,591		$	(11,407	)	$	21,184

	Six Months Ended June 30, 2013
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding losses arising during the period	$	(44,297	)	$	15,504		$	(28,793	)
Less: reclassification adjustment for gains included in net income		(2,261	)		791			(1,470	)
Net unrealized losses		(46,558	)		16,295			(30,263	)
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	$	952		$	(333	)	$	619
Less: reclassification adjustment for losses included in net income		392			(137	)		255
Fair value of derivative instruments designated as cash flow hedges		1,344			(470	)		874
Total other comprehensive loss	$	(45,214	)	$	15,825		$	(29,389	)

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Shareholders' Equity and Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2014

Equity [Abstract]

Shareholders' Equity and Other Comprehensive Income (Loss)

NOTE 13 – SHAREHOLDERS’ EQUITY AND OTHER COMPREHENSIVE INCOME (LOSS)

Other Comprehensive Income

The following is a summary of the tax effects of each component of other comprehensive income for the periods indicated:

	Three Months Ended June 30, 2014
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding gains arising during the period	$	16,730		$	(5,856	)	$	10,874
Less: reclassification adjustment for gains included in net income		(8	)		3			(5	)
Net unrealized gains		16,722			(5,853	)		10,869
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	$	—		$	—		$	—
Less: reclassification adjustment for losses (gains) included in net income		—			—			—
Fair value of derivative instruments designated as cash flow hedges		—			—			—
Total other comprehensive income	$	16,722		$	(5,853	)	$	10,869

	Three Months Ended June 30, 2013
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding losses arising during the period	$	(42,303	)	$	14,806		$	(27,497	)
Less: reclassification adjustment for losses included in net income		66			(23	)		43
Net unrealized losses		(42,237	)		14,783			(27,454	)
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	$	(1,121	)	$	392		$	(729	)
Less: reclassification adjustment for gains included in net income		(33	)		12			(21	)
Fair value of derivative instruments designated as cash flow hedges		(1,154	)		404			(750	)
Total other comprehensive loss	$	(43,391	)	$	15,187		$	(28,204	)

	Six Months Ended June 30, 2014
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized loss on securities:
Unrealized holding gains arising during the period	$	32,618		$	(11,416	)	$	21,202
Less: reclassification adjustment for gains included in net income		(27	)		9			(18	)
Net unrealized gains		32,591			(11,407	)		21,184
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	$	—		$	—		$	—
Less: reclassification adjustment for losses (gains) included in net income		—			—			—
Fair value of derivative instruments designated as cash flow hedges		—			—			—
Total other comprehensive income	$	32,591		$	(11,407	)	$	21,184

	Six Months Ended June 30, 2013
(Dollars in thousands)	Before Tax			Tax Expense (Benefit)			Net-of-Tax Amount
Unrealized gain on securities:
Unrealized holding losses arising during the period	$	(44,297	)	$	15,504		$	(28,793	)
Less: reclassification adjustment for gains included in net income		(2,261	)		791			(1,470	)
Net unrealized losses		(46,558	)		16,295			(30,263	)
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	$	952		$	(333	)	$	619
Less: reclassification adjustment for losses included in net income		392			(137	)		255
Fair value of derivative instruments designated as cash flow hedges		1,344			(470	)		874
Total other comprehensive loss	$	(45,214	)	$	15,825		$	(29,389	)

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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]
Fair value of guarantees under commercial and standby letters of credit	$ 1.2	$ 1.1