Consolidated Statements of Changes in Shareholders' Equity - USD ($)	Total	Common Stock	Retained Earnings	Deferred Compensation	Common Stock Held By Deferred Compensation Trust	Accumulated Other Comprehensive Loss
Balance, Shares at Dec. 31, 2022		5,636,830
Balance, amount at Dec. 31, 2022	$ 105,195	$ 52,636	$ 100,156	$ 2,181	$ (2,181)	$ (47,597)
Adoption of new accounting standard, net of tax	(838)	0	(838)	0	0	0
Cash dividends declared on common stock	1,925	$ 0	1,925	0	0	0
Restricted stock units exercised, shares		191
Restricted stock units exercised, amount	6	$ 6	0	0	0	0
Equity incentive plan, net	0	0	0	(344)	344	0
Net earnings	3,172,000	0	3,172	0	0	0
Change in accumulated other comprehensive income (loss), net of tax	9,173,000	0	0	0	0	9,173
Balance, amount at Mar. 31, 2023	114,783,000	$ 52,642	100,565	1,837	(1,837)	(38,424)
Balance, Shares at Mar. 31, 2023		5,637,021
Balance, Shares at Dec. 31, 2022		5,636,830
Balance, amount at Dec. 31, 2022	105,195	$ 52,636	100,156	2,181	(2,181)	(47,597)
Balance, amount at Dec. 31, 2023	121,016,000	$ 50,625	109,756	1,910	(1,910)	(39,365)
Balance, Shares at Dec. 31, 2023		5,534,499
Cash dividends declared on common stock	1,929	$ 0	1,929	0	0	0
Equity incentive plan, net	0	0	0	33	(33)	0
Net earnings	3,948,000	0	3,948	0	0	0
Change in accumulated other comprehensive income (loss), net of tax	55,000	$ 0	0	0	0	55
Common stock repurchase, shares		(78,500)
Common stock repurchase, amount	(1,998)	$ (1,998)	0	0	0	0
Balance, amount at Mar. 31, 2024	$ 121,092,000	$ 48,627	$ 111,775	$ 1,943	$ (1,943)	$ (39,310)
Balance, Shares at Mar. 31, 2024		5,455,999