Goodwill and other intangibles (Tables)

3 Months Ended

Mar. 31, 2024

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, 2024 and 2023.

(in thousands)	Goodwill		Other intangible assets		Total
December 31, 2022	$	159,595	$	5,975	$	165,570
Amortization	—		327		327
March 31, 2023	$	159,595	$	5,648	$	165,243
December 31, 2023	$	159,595	$	4,652	$	164,247
Amortization	—		320		320
March 31, 2024	$	159,595	$	4,332	$	163,927

Intangible Assets Disclosure [Text Block]

The following table shows the balance of acquired intangible assets at March 31, 2024 and at December 31, 2023:

	March 31, 2024				December 31, 2023
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Other intangible assets:
Core deposit intangible assets	$	14,456	$	10,124	$	14,456	$	9,804

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 2024 and the next four years follows:

(in thousands)	Total
Nine months ending December 31, 2024	$	894
2025	1,042
2026	887
2027	754
2028	618