GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

The following table sets forth the carrying value of goodwill and other intangible assets, net of accumulated amortization, at December 31:

	2017		2016
	(Dollars in thousands)
Balances not subject to amortization
Goodwill	$	231,806	$	221,526
Balances subject to amortization
Core deposit intangibles	8,636		8,527
Other intangible assets	705		1,321
Total other intangible assets	9,341		9,848
Total goodwill and other intangible assets	$	241,147	$	231,374

Schedule of Goodwill

The changes in the carrying value of goodwill for the periods indicated were as follows:

	2017		2016
	(Dollars in thousands)
Balance at beginning of year	$	221,526	$	201,083
Acquisitions	10,280		20,443
Balance at end of year	$	231,806	$	221,526

Schedule of Other Intangible Assets

The gross carrying amount and accumulated amortization of other intangible assets were as follows at the dates indicated:

	December 31
	2017							2016
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Dollars in thousands)
Core deposit intangibles	$	26,736	$	(18,100	)	$	8,636	$	23,917	$	(15,390	)	$	8,527
Other intangible assets	3,165		(2,460		)	705		3,020		(1,699		)	1,321
Total	$	29,901	$	(20,560	)	$	9,341	$	26,937	$	(17,089	)	$	9,848

Schedule of Intangible Assets Estimated Annual Amortization Expense

The following table sets forth the estimated annual amortization expense of intangible assets for each of the next five years:

Year	Amount
	(Dollars in thousands)
2018	$	2,394
2019	$	1,687
2020	$	1,414
2021	$	1,245
2022	$	948