Segment Reporting (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) item segment	Jun. 30, 2021 USD ($)
Segment Reporting
Number of operating segments | segment			4
Number of banking offices | item			14
Key metrics related to segments
Net interest income	$ 22,776	$ 21,140	$ 44,449	$ 43,178
Noninterest income	29,226	36,748	58,696	77,629
Noninterest expense	39,984	42,550	78,055	85,592
Net income before taxes	12,018	15,338	25,090	35,215
Corporate Administration
Key metrics related to segments
Net interest income	(561)	(538)	(1,122)	(826)
Noninterest income	6	(14)	35	(28)
Noninterest expense	10,928	8,859	21,015	17,517
Net income before taxes	(11,483)	(9,411)	(22,102)	(18,371)
Banking | Operating Segments
Key metrics related to segments
Net interest income	22,779	21,188	44,304	43,068
Noninterest income	1,341	1,466	2,879	2,988
Noninterest expense	15,619	10,914	28,313	21,998
Net income before taxes	8,501	11,740	18,870	24,058
Retirement and Benefit Services | Operating Segments
Key metrics related to segments
Noninterest income	16,293	17,871	33,939	35,126
Noninterest expense	6,598	9,988	15,030	20,100
Net income before taxes	9,695	7,883	18,909	15,026
Wealth Management | Operating Segments
Key metrics related to segments
Noninterest income	5,548	5,138	10,874	10,124
Noninterest expense	1,630	2,128	3,468	4,463
Net income before taxes	3,918	3,010	7,406	5,661
Mortgage | Operating Segments
Key metrics related to segments
Net interest income	558	490	1,267	936
Noninterest income	6,038	12,287	10,969	29,419
Noninterest expense	5,209	10,661	10,229	21,514
Net income before taxes	$ 1,387	$ 2,116	$ 2,007	$ 8,841