Segment Reporting (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) item segment	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Segment Reporting
Number of operating segments | segment			3
Number of banking offices | item			14
Key metrics related to segments
Net interest income (loss)	$ 24,001	$ 22,234	$ 46,220	$ 45,892
Provision for credit losses	4,489		4,489	550
Noninterest income (loss)	27,371	25,778	52,694	51,031
Noninterest expense	38,752	36,373	77,771	74,242
Net income (loss) before taxes	8,131	11,639	16,654	22,131
Total assets	4,358,623	3,832,978	4,358,623	3,832,978	$ 3,907,713
Corporate Administration
Key metrics related to segments
Net interest income (loss)	(683)	(665)	(1,361)	(1,320)
Noninterest income (loss)	(66)	197	(5)	235
Noninterest expense	1,985	1,431	4,399	3,693
Net income (loss) before taxes	(2,734)	(1,899)	(5,765)	(4,778)
Total assets	35,935	27,234	35,935	27,234
Banking | Operating Segments
Key metrics related to segments
Net interest income (loss)	24,684	22,899	47,581	47,212
Provision for credit losses	4,489		4,489	550
Noninterest income (loss)	4,999	4,242	8,489	8,780
Noninterest expense	19,165	19,301	37,831	37,951
Net income (loss) before taxes	6,029	7,840	13,750	17,491
Total assets	4,282,868	3,764,246	4,282,868	3,764,246
Retirement and benefit services | Operating Segments
Key metrics related to segments
Noninterest income (loss)	16,078	15,890	31,733	31,372
Noninterest expense	13,649	12,651	27,838	26,246
Net income (loss) before taxes	2,429	3,239	3,895	5,126
Total assets	34,695	37,114	34,695	37,114
Wealth management | Operating Segments
Key metrics related to segments
Noninterest income (loss)	6,360	5,449	12,477	10,644
Noninterest expense	3,953	2,990	7,703	6,352
Net income (loss) before taxes	2,407	2,459	4,774	4,292
Total assets	$ 5,125	$ 4,384	$ 5,125	$ 4,384