Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Other Intangible Assets [Abstract]

Schedule of Goodwill [Table Text Block]

The following table details changes in the recorded amount of goodwill for the years ended December 31:

(Dollars in thousands)	2016		2015
Goodwill, beginning of year	$	132,631	$	98,562
Acquired goodwill	—		34,069
Goodwill, end of year	$	132,631	$	132,631

Schedule of Other Intangible Assets

Other intangible assets were comprised of the following at December 31:

(Dollars in thousands)	Core Deposits			Customer Relationships			Total
2016
Gross intangibles	$	16,150		$	4,859		$	21,009
Acquired intangibles	—			514			514
Accumulated amortization	(7,594		)	(2,847		)	(10,441		)
Total acquired intangibles	$	8,556		$	2,526		$	11,082
Servicing rights							2,305
Total other intangibles							$	13,387
2015
Gross intangibles	$	7,013		$	8,858		$	15,871
Acquired intangibles	8,623			1,695			10,318
Accumulated amortization	(4,396		)	(7,194		)	(11,590		)
Total acquired intangibles	$	11,240		$	3,359		$	14,599
Servicing rights							2,387
Total other intangibles							$	16,986

Schedule of Future Amortization of Other Intangible Assets

The following table details estimated aggregate future amortization expense of core deposit and customer relationship intangible assets at December 31, 2016:

(Dollars in thousands)	Core Deposits		Customer Relationships		Total
2017	$	2,688	$	722	$	3,410
2018	2,175		606		2,781
2019	1,658		482		2,140
2020	1,138		352		1,490
2021	648		217		865
Thereafter	249		147		396
Total	$	8,556	$	2,526	$	11,082

Servicing Rights Activity

The following is an analysis of activity of servicing rights for the years ended December 31:

(Dollars in thousands)	2016			2015			2014
Balance, beginning of year	$	2,387		$	2,238		$	2,295
Amortization	(762		)	(662		)	(597		)
Servicing rights originated	680			566			497
Servicing rights acquired	—			245			43
Balance, end of year	$	2,305		$	2,387		$	2,238