Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill

Changes in the carrying amount of goodwill during the years ended December 31, 2015 and 2014 were as follows:

	Goodwill
Balance at December 31, 2013	$	276,100
Adjustment to previously recorded goodwill	(1,394		)
Balance at December 31, 2014	$	274,706
Addition to goodwill from Heritage acquisition	171,182
Adjustment to previously recorded goodwill	(17		)
Balance at December 31, 2015	$	445,871

Summary of finite-lived intangible assets

The following table provides a summary of finite-lived intangible assets as of the dates presented:

	Gross  Carrying Amount		Accumulated Amortization			Net Carrying Amount
December 31, 2015
Core deposit intangible	$	45,982	$	(18,572	)	$	27,410
Customer relationship intangible	1,970		(569		)	1,401
Total finite-lived intangible assets	$	47,952	$	(19,141	)	$	28,811
December 31, 2014
Core deposit intangible	$	33,726	$	(12,635	)	$	21,091
Customer relationship intangible	1,970		(437		)	1,533
Total finite-lived intangible assets	$	35,696	$	(13,072	)	$	22,624

Estimated amortization expense of finite-lived intangible assets for future periods

The estimated amortization expense of finite-lived intangible assets for future periods is summarized as follows:

2016	$	6,458
2017	5,504
2018	4,701
2019	3,962
2020	3,112
Thereafter	5,074
Total	$	28,811