Goodwill and other intangibles (Tables)

6 Months Ended

Jun. 30, 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 and the six-month periods ended June 30, 2023 and 2022.

(in thousands)	Goodwill		Other intangible assets		Total
April 1, 2022	$	159,595	$	7,060	$	166,655
Amortization	—		403		403
June 30, 2022	$	159,595	$	6,657	$	166,252
April 1, 2023	$	159,595	$	5,648	$	165,243
Amortization	—		328		328
June 30, 2023	$	159,595	$	5,320	$	164,915

Intangible Assets Disclosure [Text Block]

The following table shows the balance of acquired intangible assets at June 30, 2023 and at December 31, 2022.

	June 30, 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	$	9,136	$	14,456	$	8,481
Trade name intangible assets	1,300		1,300		1,300		1,300
Total	$	15,756	$	10,436	$	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 the remainder of 2023 and the next four years follows:

(in thousands)	Total
Six months ending December 31, 2023	$	668
2024	1,215
2025	1,042
2026	887
2027	754