Goodwill and other intangibles (Tables)

9 Months Ended

Sep. 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 nine-month periods ended September 30, 2023 and 2022.

(in thousands)	Goodwill		Other intangible assets		Total
July 1, 2022	$	159,595	$	6,657	$	166,252
Amortization	—		341		341
September 30, 2022	$	159,595	$	6,316	$	165,911
July 1, 2023	$	159,595	$	5,320	$	164,915
Amortization	—		334		334
September 30, 2023	$	159,595	$	4,986	$	164,581

(in thousands)	Goodwill		Other intangible assets		Total
December 31, 2021	$	159,595	$	7,462	$	167,057
Amortization	—		1,146		1,146
September 30, 2022	$	159,595	$	6,316	$	165,911
December 31, 2022	$	159,595	$	5,975	$	165,570
Amortization	—		989		989
September 30, 2023	$	159,595	$	4,986	$	164,581

Intangible Assets Disclosure [Text Block]

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

	September 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	$	9,470	$	14,456	$	8,481
Trade name intangible assets	1,300		1,300		1,300		1,300
Total	$	15,756	$	10,770	$	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
Three months ending December 31, 2023	$	334
2024	1,215
2025	1,042
2026	887
2027	754