Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

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 three months ended March 31, 2018 were as follows:

(Dollars in thousands)	Banking		Wealth Management		Insurance		Consolidated
Balance at December 31, 2017	$	138,476	$	15,434	$	18,649	$	172,559
Addition to goodwill from acquisitions	—		—		—		—
Balance at March 31, 2018	$	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 March 31, 2018						At December 31, 2017
(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	$	645	$	65	$	710	$	580	$	130
Core deposit intangibles	6,788		2,399		4,389		6,788		2,135		4,653
Customer related intangibles	12,381		10,094		2,287		12,381		9,828		2,553
Servicing rights	16,192		9,587		6,605		15,855		9,282		6,573
Total amortized intangible assets	$	36,071	$	22,725	$	13,346	$	35,734	$	21,825	$	13,909

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 2018 and the succeeding fiscal years is as follows:

Year	(Dollars in thousands)	Amount
Remainder of 2018		$	1,519
2019		1,565
2020		1,200
2021		923
2022		666
Thereafter		868

The estimated amortization expense of servicing rights for the remainder of 2018 and the succeeding fiscal years is as follows:

Year	(Dollars in thousands)	Amount
Remainder of 2018		$	874
2019		774
2020		684
2021		602
2022		529
Thereafter		3,142

Changes in Mortgage Servicing Rights

Changes in the servicing rights balance are summarized as follows:

	Three Months Ended March 31,
(Dollars in thousands)	2018			2017
Beginning of period	$	6,573		$	6,485
Servicing rights capitalized	337			343
Amortization of servicing rights	(305		)	(326		)
Changes in valuation allowance	—			—
End of period	$	6,605		$	6,502
Residential mortgage and SBA loans serviced for others	$	1,012,677		$	972,617