Segment Reporting (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment item	Sep. 30, 2021 USD ($)
Segment Reporting
Number of operating segments | segment			4
Number of banking offices | item			14
Key metrics related to segments
Net interest income	$ 28,316	$ 21,132	$ 72,765	$ 64,310
Provision for loan losses		(2,000)		(2,000)
Noninterest income	27,010	36,040	85,706	113,669
Noninterest expense	42,767	42,041	120,822	127,633
Net income before taxes	12,559	17,131	37,649	52,346
Corporate Administration
Key metrics related to segments
Net interest income	(589)	(535)	(1,711)	(1,361)
Noninterest income	56	22	91	(6)
Noninterest expense	10,588	9,635	31,585	27,152
Net income before taxes	(11,121)	(10,148)	(33,205)	(28,519)
Banking | Operating Segments
Key metrics related to segments
Net interest income	28,512	21,168	72,816	64,236
Provision for loan losses		(2,000)		(2,000)
Noninterest income	1,723	1,576	4,602	4,564
Noninterest expense	19,990	11,403	48,303	33,401
Net income before taxes	10,245	13,341	29,115	37,399
Retirement and Benefit Services | Operating Segments
Key metrics related to segments
Noninterest income	16,597	18,031	50,536	53,157
Noninterest expense	6,130	10,320	21,160	30,420
Net income before taxes	10,467	7,711	29,376	22,737
Wealth Management | Operating Segments
Key metrics related to segments
Noninterest income	4,852	5,295	15,726	15,419
Noninterest expense	1,576	2,219	5,062	6,682
Net income before taxes	3,276	3,076	10,664	8,737
Mortgage | Operating Segments
Key metrics related to segments
Net interest income	393	499	1,660	1,435
Noninterest income	3,782	11,116	14,751	40,535
Noninterest expense	4,483	8,464	14,712	29,978
Net income before taxes	$ (308)	$ 3,151	$ 1,699	$ 11,992