Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2019

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, 2019 and December 31, 2018 (in thousands):

	March 31, 2019				December 31, 2018
	Gross Carrying Value		Accumulated Amortization		Gross Carrying Value		Accumulated Amortization
Goodwill not subject to amortization (effective 1/1/02)	$	108,757	$	3,760	$	109,037	$	3,760
Intangibles from branch acquisition	3,015		3,015		3,015		3,015
Core deposit intangibles	32,355		14,997		32,355		14,017
Other intangibles	16,029		2,966		16,029		2,648
	$	160,156	$	24,738	$	160,436	$	23,440

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, 2019, March 31, 2018 and December 31, 2018 (in thousands):

	March 31, 2019			March 31, 2018			December 31, 2018
Beginning Balance	$	2,101			$844		$	844
Mortgage servicing rights acquired during period	—			—			1,558
Mortgage servicing rights capitalized	—			—			7
Mortgage servicing rights amortized	(58		)	(39		)	(308		)
Ending Balance	$	2,043			$805		$	2,101

Schedule of Intangible Assets Amortization Expense [Table Text Block]

Total amortization expense for the three months ended March 31, 2019 and 2018 was as follows (in thousands):

	Three months ended March 31,
	2019		2018
Core deposit intangibles	$	980	$	420
Customer list intangibles	318		46
Mortgage servicing rights	58		39
	$	1,356	$	505

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 01/01/19-03/31/19	$	1,356
Estimated amortization expense:
For period 04/01/19-12/31/19	3,783
For year ended 12/31/20	4,573
For year ended 12/31/21	3,996
For year ended 12/31/22	3,630
For year ended 12/31/23	3,318
For year ended 12/31/24	3,050

First BancTrust [Member]

Finite-Lived Intangible Assets [Line Items]

Reconciliation of purchase price to goodwill recorded [Table Text Block]

The following table provides a reconciliation of the purchase price paid for the acquisition of First Bank and the amount of goodwill recorded (in thousands):

Purchase price (in excess of net book value)				$	26,946
Purchase accounting adjustments:
Fair value of securities	$	320
Fair value of loans, net	3,463
Fair value of OREO	12
Fair value of mortgage servicing rights	(1,097		)
Fair value of premises and equipment	689
Fair value of time deposits	1,301
Fair value of FHLB advances	(328		)
Fair value of subordinated debentures	(1,451		)
Core deposit intangible	(5,224		)
Other assets and other liabilities, net	1,860
				(455		)
Resulting goodwill from acquisition				$	26,491

SCB Bancorp [Member]

Finite-Lived Intangible Assets [Line Items]

Reconciliation of purchase price to goodwill recorded [Table Text Block]

The following table provides a reconciliation of the purchase price paid for the acquisition of SCB and the amount of goodwill recorded (in thousands):

Purchase price (in excess of net book value)				$	21,677
Purchase accounting adjustments:
Fair value of securities	$	41
Fair value of loans, net	3,377
Fair value of OREO	345
Fair value of premises and equipment	(953		)
Fair value of time deposits	(343		)
Fair value of FHLB advances	(29		)
Core deposit intangible	(7,269		)
Customer list intangible	(12,298		)
Other assets and other liabilities, net	13,808
				(3,321		)
Resulting goodwill from acquisition				18,356