Goodwill and Other Acquired Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

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 sheets as of December 31:

	2014							2013
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core deposit intangibles	$	55,949	$	(36,354	)	$	19,595	$	45,406	$	(30,784	)	$	14,622
Customer relationship intangible asset		1,348		(822	)		526		1,348		(631	)		717
Non-compete agreement		163		(82	)		81		—		—			—
Other intangible assets		205		(46	)		159		—		—			—
Total	$	57,665	$	(37,304	)	$	20,361	$	46,754	$	(31,415	)	$	15,339

Schedule of Amortization Expense of Intangible Assets

The related amortization expense of intangible assets is as follows:

(Dollars in thousands)	Amount
Aggregate amortization expense for the years ended December 31:
2012	$	5,150
2013		4,720
2014		5,807
Estimated amortization expense for the years ended December 31:
2015	$	5,646
2016		5,187
2017		3,586
2018		2,597
2019		1,877
2020 and thereafter		1,468

Schedule of Carrying Amount of Goodwill

Changes to the carrying amount of goodwill by reporting unit for the years ended December 31, 2014 and 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 year		115,278		—		376		115,654
Balance, December 31, 2014	$	489,183	$	23,178	$	5,165	$	517,526

Mortgage Servicing Rights [Member]

Schedule of Definite-Lived Intangible Assets

Mortgage servicing rights had the following carrying values as of December 31:

	2014							2013
	Gross		Accumulated			Net		Gross		Accumulated			Net
(Dollars in thousands)	Carrying Amount		Amortization			Carrying Amount		Carrying Amount		Amortization			Carrying Amount
Mortgage servicing rights	$	4,751	$	(1,253	)	$	3,498	$	2,146	$	(638	)	$	1,508

Schedule of Amortization Expense of Intangible Assets

The related amortization expense of mortgage servicing rights is as follows:

(Dollars in thousands)	Amount
Aggregate amortization expense for the years ended December 31:
2012	$	225
2013		480
2014		759
Estimated amortization expense for the years ended December 31:
2015	$	1,550
2016		697
2017		531
2018		371
2019		230
2020 and thereafter		119