Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

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 nine months ended September 30, 2017 were as follows:

(Dollars in thousands)	Banking		Wealth Management		Insurance		Consolidated
Balance at December 31, 2016	$	138,476	$	15,434	$	18,649	$	172,559
Addition to goodwill from acquisitions	—		—		—		—
Balance at September 30, 2017	$	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 September 30, 2017						At December 31, 2016
(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	$	495	$	215	$	710	$	205	$	505
Core deposit intangibles	6,788		1,864		4,924		6,788		1,004		5,784
Customer related intangibles	12,381		9,509		2,872		12,381		8,504		3,877
Servicing rights	15,474		8,918		6,556		14,369		7,884		6,485
Total amortized intangible assets	$	35,353	$	20,786	$	14,567	$	34,248	$	17,597	$	16,651

Estimated Aggregate Amortization Expense

The estimated aggregate amortization expense for covenants not to compete and core deposit and customer related intangibles for the remainder of 2017 and the succeeding fiscal years is as follows:

Year	(Dollars in thousands)	Amount
Remainder of 2017		$	674
2018		2,115
2019		1,565
2020		1,200
2021		923
Thereafter		1,534

The estimated amortization expense of servicing rights for the remainder of 2017 and the succeeding fiscal years is as follows:

Year	(Dollars in thousands)	Amount
Remainder of 2017		$	989
2018		857
2019		737
2020		632
2021		542
Thereafter		2,799

Changes in Mortgage Servicing Rights

Changes in the servicing rights balance are summarized as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(Dollars in thousands)	2017			2016			2017			2016
Beginning of period	$	6,548		$	5,896		$	6,485		$	5,877
Servicing rights capitalized	376			652			1,106			1,429
Acquired servicing rights	—			87			—			87
Amortization of servicing rights	(368		)	(468		)	(1,035		)	(1,226		)
Changes in valuation allowance	—			—			—			—
End of period	$	6,556		$	6,167		$	6,556		$	6,167
Residential mortgage and SBA loans serviced for others	$	997,169		$	933,470		$	997,169		$	933,470