Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

The following is a summary of intangible assets:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Dollars in thousands)
As of March 31, 2018
Core deposit intangibles	$	25,907	$	(9,098	)	$	16,809
Customer relationship intangibles		5,699		(3,854	)		1,845
Mortgage servicing intangibles		419		(291	)		128
Total	$	32,025	$	(13,243	)	$	18,782
As of December 31, 2017
Core deposit intangibles	$	17,447	$	(8,451	)	$	8,996
Customer relationship intangibles		5,699		(3,767	)		1,932
Mortgage servicing intangibles		439		(285	)		154
Total	$	23,585	$	(12,503	)	$	11,082

Summary of Goodwill by Business Segment

The following is a summary of goodwill by business segment:

					Other		Executive,
	Metropolitan		Community		Financial		Operations
	Banks		Banks		Services		& Support		Consolidated
	(Dollars in thousands)
Three month ended March 31, 2018
Balance at beginning of period	$	8,078	$	40,050	$	5,464	$	450	$	54,042
Acquisitions		1,127		24,627		—		—		25,754
Balance at end of period	$	9,205	$	64,677	$	5,464	$	450	$	79,796