Income Tax - Reconciliation of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Currently payable
Federal	$ 9,111	$ 11,742	$ 16,914
State	888	1,303	2,377
Deferred
Federal	2,208	2,056	(7,970)
State	(31)	255	(1,451)
Total income tax expense	12,176	15,356	9,870
Reconciliation of federal statutory to actual tax expense
Federal statutory income tax at 21%	22,173	21,514	16,457
Tax exempt interest	(6,623)	(5,362)	(4,090)
Tax exempt BOLI income	(746)	(604)	(531)
Stock compensation	(232)	(250)	(160)
Other tax exempt income	(454)	(404)	(334)
State tax	676	1,231	733
Tax credit investments	(2,774)	(981)	(2,284)
Nondeductible and other	156	212	79
Total income tax expense	$ 12,176	$ 15,356	$ 9,870