Goodwill and Other Intangibles and Mortgage Servicing Rights (Tables)

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill and intangible assets included in other assets

A summary of goodwill and other intangibles was as follows.

	Nine Months Ended		Year Ended
(in thousands)	September 30, 2019		December 31, 2018
Goodwill	$	107,366	$	107,366
Core deposit intangibles	10,006		12,562
Customer list intangibles	3,999		4,379
Other intangibles	14,005		16,941
Goodwill and other intangibles, net	$	121,371	$	124,307

Schedule of other intangible assets

	Nine Months Ended			Year Ended
(in thousands)	September 30, 2019			December 31, 2018
Core deposit intangibles:
Gross carrying amount	$	29,015		$	29,015
Accumulated amortization	(19,009		)	(16,453		)
Net book value	$	10,006		$	12,562
Additions during the period	$	—		$	—
Amortization during the period	$	2,556		$	3,915
Customer list intangibles:
Gross carrying amount	$	5,523		$	5,523
Accumulated amortization	(1,524		)	(1,144		)
Net book value	$	3,999		$	4,379
Additions during the period	$	—		$	290
Amortization during the period	$	380		$	474

Schedule of mortgage servicing rights

A summary of the changes in the mortgage servicing rights asset was as follows.

	Nine Months Ended			Year Ended
(in thousands)	September 30, 2019			December 31, 2018
Mortgage servicing rights ("MSR") asset:
MSR asset at beginning of year	$	3,749		$	3,187
Capitalized MSR	1,807			1,203
Amortization during the period	(611		)	(641		)
MSR asset at end of period	$	4,945		$	3,749
Fair value of MSR asset at end of period	$	6,960		$	6,347
Residential mortgage loans serviced for others	$	721,569		$	603,446
Net book value of MSR asset to loans serviced for others	0.69		%	0.62		%

Schedule of estimated future amortization expense for amortizing intangible assets and the MSR asset

The following table shows the estimated future amortization expense for amortizing intangible assets and the MSR asset. The projections are based on existing asset balances, the current interest rate environment and prepayment speeds as of September 30, 2019. The actual amortization expense the Company recognizes in any given period may be significantly different depending upon acquisition or sale activities, changes in interest rates, prepayment speeds, market conditions, regulatory requirements and events or circumstances that indicate the carrying amount of an asset may not be recoverable.

(in thousands)	Core deposit intangibles		Customer list intangibles		MSR asset
Year ending December 31,
2019 (remaining three months)	$	781	$	127	$	224
2020	2,657		507		879
2021	2,167		507		730
2022	1,735		507		730
2023	1,273		483		658
2024	841		449		400
Thereafter	552		1,419		1,324
Total	$	10,006	$	3,999	$	4,945