Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2020

Finite-Lived Intangible Assets [Line Items]

Schedule of Intangible Assets and Goodwill [Table Text Block]

The following table presents gross carrying value and accumulated amortization by major intangible asset class as of March 31, 2020 and December 31, 2019 (in thousands):

	March 31, 2020				December 31, 2019
	Gross Carrying Value		Accumulated Amortization		Gross Carrying Value		Accumulated Amortization
Goodwill not subject to amortization (effective 1/1/02)	$	108,752	$	3,760	$	108,752	$	3,760
Intangibles from branch acquisition	3,015		3,015		3,015		3,015
Core deposit intangibles	32,355		18,589		32,355		17,746
Other intangibles	16,389		4,244		16,129		3,917
	$	160,511	$	29,608	$	160,251	$	28,438

Intangible Assets, Mortgage Servicing Rights [Table Text Block]

The following table summarizes the activity pertaining to mortgage servicing rights included in intangible assets as of March 31, 2020, March 31, 2019 and December 31, 2019 (in thousands):

	March 31, 2020			March 31, 2019			December 31, 2019
Beginning Balance	$	1,444		$	2,101		$	2,101
Mortgage servicing rights acquired during period	—			—			—
Mortgage servicing rights capitalized	—			—			—
Valuation reserve	(18		)	—			(380		)
Mortgage servicing rights amortized	(126		)	(58		)	(411		)
I/O Strip	(4		)	—			134
Ending Balance	$	1,296		$	2,043		$	1,444

Schedule of Intangible Assets Amortization Expense [Table Text Block]

Total amortization expense for the three months ended March 31, 2020 and 2019 was as follows (in thousands):

	Three months ended March 31,
	2020		2019
Core deposit intangibles	$	843	$	980
Customer list intangibles	326		318
Mortgage servicing rights	126		58
	$	1,295	$	1,356

Schedule of Expected Amortization Expense [Table Text Block]

Aggregate amortization expense for the current year and estimated amortization expense for each of the five succeeding years is shown in the table below (in thousands):

Aggregate amortization expense:
For period 01/01/20-3/31/20	$	1,295
Estimated amortization expense:
For period 4/01/20-12/31/20	3,674
For year ended 12/31/20	4,285
For year ended 12/31/21	3,919
For year ended 12/31/22	3,498
For year ended 12/31/23	2,946
For year ended 12/31/24	2,633