Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The following table presents the changes in the carrying amount of goodwill for the years indicated:

	As of And for the Year Ended December 31,
	2014		2013
	(Dollars in thousands)
Balance, beginning of period	$	55,097	$	55,097
Addition from the ASB acquisition		19,147		—
Balance, end of period	$	74,244	$	55,097

Summary of Amortizable Intangible Assets

The following summarizes activity of amortizable core deposit intangible (“CDI”) assets for the years ended December 31, 2014 and 2013:

	As of And For the Year Ended December 31,
	2014							2013
	Gross CDI Amount		Accumulated Amortization			Net CDI Amount		Gross Carrying Amount		Accumulated Amortization			Net CDI Amount
	(Dollars in thousands)
Balance of intangible assets, beginning of period	$	31,999	$	(29,738	)	$	2,261	$	31,999	$	(28,610	)	$	3,389
Additions due to acquisitions		2,090							—
Balance of intangible assets, end of period	$	34,089	$	(30,875	)	$	3,214	$	31,999	$	(29,738	)	$	2,261
Aggregate amortization expense:
For year ended December 31,	$	1,137						$	1,127
Estimated Amortization Expense:
For the year ended December 31, 2015	$	949
For the year ended December 31, 2016		737
For the year ended December 31, 2017		631
For the year ended December 31, 2018		562
For the year ended December 31, 2019		335
Thereafter		—