Goodwill and other intangibles (Tables)

6 Months Ended

Jun. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

The following tables show the activity in goodwill and other intangible assets for the three-month and six-month periods ended June 30, 2022 and 2021.

(in thousands)	Goodwill		Other intangible assets		Total
April 1, 2021	$	159,595	$	8,781	$	168,376
Amortization	—		479		479
June 30, 2021	$	159,595	$	8,302	$	167,897
April 1, 2022	$	159,595	$	7,060	$	166,655
Amortization	—		403		403
June 30, 2022	$	159,595	$	6,657	$	166,252

(in thousands)	Goodwill		Other intangible assets		Total
December 31, 2020	$	159,595	$	9,260	$	168,855
Amortization	—		958		958
June 30, 2021	$	159,595	$	8,302	$	167,897
December 31, 2021	$	159,595	$	7,462	$	167,057
Amortization	—		805		805
June 30, 2022	$	159,595	$	6,657	$	166,252

Intangible Assets Disclosure [Text Block]

The following table shows the balance of acquired intangible assets as of June 30, 2022 and December 31, 2021.

	June 30, 2022				December 31, 2021
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Other intangible assets:
Core deposit intangible assets	$	14,456	$	7,799	$	14,456	$	6,994
Trade name intangible assets	1,300		1,300		1,300		1,300
Total	$	15,756	$	9,099	$	15,756	$	8,294

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Estimated amortization expense related to core deposit intangible assets for each of the next five years follows:

(in thousands)	Total
Six months ending December 31, 2022	$	682
2023	1,323
2024	1,215
2025	1,042
2026	887