Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016 and 2015 were as follows:

(Dollars in thousands)	Banking		Wealth Management		Insurance		Consolidated
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
Addition to goodwill from acquisitions	59,902		—		—		59,902
Balance at December 31, 2016	$	138,476	$	15,434	$	18,649	$	172,559

Components of Intangible Assets

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

	At December 31, 2016						At December 31, 2015
(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:
Covenants not to compete	$	710	$	205	$	505	$	—	$	—	$	—
Core deposit intangibles	6,788		1,004		5,784		1,520		276		1,244
Customer related intangibles	12,381		8,504		3,877		14,227		8,728		5,499
Mortgage servicing rights	14,369		7,884		6,485		12,233		6,356		5,877
Total amortized intangible assets	$	34,248	$	17,597	$	16,651	$	27,980	$	15,360	$	12,620

Estimated Aggregate Amortization Expense

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
2017		$	941
2018		825
2019		716
2020		619
2021		533
Thereafter		2,851

The estimated aggregate amortization expense for covenants not to compete and core deposit and customer related intangibles for each of the five succeeding fiscal years and thereafter follows:

Year	(Dollars in thousands)	Amount
2017		$	2,829
2018		2,114
2019		1,565
2020		1,200
2021		923
Thereafter		1,535

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)	2016			2015			2014
Beginning of period	$	5,877		$	5,509		$	5,519
Servicing rights capitalized	2,049			1,674			1,118
Acquired servicing rights	87			—			—
Amortization of servicing rights	(1,528		)	(1,306		)	(1,378		)
Changes in valuation allowance	—			—			250
End of period	$	6,485		$	5,877		$	5,509
Mortgage loans serviced for others	$	965,729		$	863,947		$	796,835

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)	2016		2015		2014
Valuation allowance, beginning of period	$	—	$	—	$	(250	)
Additions	—		—		—
Reductions	—		—		250
Direct write-downs	—		—		—
Valuation allowance, end of period	$	—	$	—	$	—