Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Goodwill

Changes in the carrying amount of the Corporation's goodwill by business segment for the years ended December 31, 2015 and 2014 were as follows:

(Dollars in thousands)	Banking		Wealth Management		Insurance		Consolidated
Balance at December 31, 2013	$	35,058	$	8,625	$	13,834	$	57,517
Addition to goodwill from acquisitions	—		6,809		3,391		10,200
Balance at December 31, 2014	35,058		15,434		17,225		67,717
Addition to goodwill from acquisitions	43,516		—		1,424		44,940
Balance at December 31, 2015	$	78,574	$	15,434	$	18,649	$	112,657

Components of Intangible Assets

The following table reflects the components of intangible assets at the dates indicated:

	At December 31, 2015						At December 31, 2014
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization and Fair Value Adjustments		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization and Fair Value Adjustments		Net Carrying Amount
Amortized intangible assets:
Core deposit intangibles	$	1,520	$	276	$	1,244	$	—	$	—	$	—
Customer related intangibles	14,227		8,728		5,499		13,397		6,726		6,671
Mortgage servicing rights	12,233		6,356		5,877		10,559		5,050		5,509
Total amortized intangible assets	$	27,980	$	15,360	$	12,620	$	23,956	$	11,776	$	12,180

Estimated Aggregate Amortization Expense

The estimated aggregate amortization expense for core deposit and customer related intangibles for each of the five succeeding fiscal years and thereafter follows:

Year	(Dollars in thousands)	Amount
2016		$	1,871
2017		1,544
2018		1,170
2019		847
2020		577
Thereafter		734

The estimated amortization expense of mortgage servicing rights for each of the five succeeding fiscal years and thereafter is as follows:

Year	(Dollars in thousands)	Amount
2016		$	902
2017		783
2018		672
2019		574
2020		489
Thereafter		2,457

Changes in Mortgage Servicing Rights

Changes in the mortgage servicing rights balance are summarized as follows:

	For the Years Ended December 31,
(Dollars in thousands)	2015			2014			2013
Beginning of period	$	5,509		$	5,519		$	4,152
Servicing rights capitalized	1,674			1,118			2,485
Amortization of servicing rights	(1,306		)	(1,378		)	(1,365		)
Changes in valuation allowance	—			250			247
End of period	$	5,877		$	5,509		$	5,519
Mortgage loans serviced for others	$	863,947		$	796,835		$	751,891

Activity in Valuation Allowance for Mortgage Servicing Rights

Activity in the valuation allowance for mortgage servicing rights was as follows:

	For the Years Ended December 31,
(Dollars in thousands)	2015		2014			2013
Valuation allowance, beginning of period	$	—	$	(250	)	$	(497	)
Additions	—		—			—
Reductions	—		250			247
Direct write-downs	—		—			—
Valuation allowance, end of period	$	—	$	—		$	(250	)