Goodwill and other intangibles (Tables)

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

The following table shows the activity in goodwill and other intangible assets for the three-month periods ended March 31, 2023 and 2022.

(in thousands)	Goodwill		Other intangible assets		Total
December 31, 2021	$	159,595	$	7,462	$	167,057
Amortization	—		402		402
March 31, 2022	$	159,595	$	7,060	$	166,655
December 31, 2022	$	159,595	$	5,975	$	165,570
Amortization	—		327		327
March 31, 2023	$	159,595	$	5,648	$	165,243

Intangible Assets Disclosure [Text Block]

The following table shows the balance of acquired intangible assets at March 31, 2023 and at December 31, 2022.

	March 31, 2023				December 31, 2022
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Other intangible assets:
Core deposit intangible assets	$	14,456	$	8,808	$	14,456	$	8,481
Trade name intangible assets	1,300		1,300		1,300		1,300
Total	$	15,756	$	10,108	$	15,756	$	9,781

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
Nine months ending December 31, 2023	$	995
2024	1,215
2025	1,042
2026	887
2027	754