CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (loss) [Member]	Total
Balances at Dec. 31, 2020	$ 118	$ 52,167	$ 141,205	$ 1,529	$ 195,019
Net income			3,998		3,998
Other comprehensive (loss)				(782)	(782)
Retirement of common stock		(819)			(819)
Stock-based compensation		97			97
Cash dividends declared			(1,409)		(1,409)
Balances at Mar. 31, 2021	118	51,445	143,794	747	196,104
Balances at Dec. 31, 2020	118	52,167	141,205	1,529	195,019
Net income					12,645
Balances at Sep. 30, 2021	118	51,641	149,620	228	201,607
Balances at Mar. 31, 2021	118	51,445	143,794	747	196,104
Net income			4,031		4,031
Other comprehensive (loss)				(141)	(141)
Stock-based compensation		99			99
Cash dividends declared			(1,411)		(1,411)
Balances at Jun. 30, 2021	118	51,544	146,414	606	198,682
Net income			4,616		4,616
Other comprehensive (loss)				(378)	(378)
Stock-based compensation		91			91
Exercise of options, net of shares surrendered		6			6
Cash dividends declared			(1,410)		(1,410)
Balances at Sep. 30, 2021	118	51,641	149,620	228	201,607
Balances at Dec. 31, 2021	198	200,473	149,966	56	350,693
Net income			5,613		5,613
Other comprehensive (loss)				(2,228)	(2,228)
Common shares issued for employee stock purchase plan		37			37
Stock-based compensation		130			130
Cash dividends declared			(2,381)		(2,381)
Balances at Mar. 31, 2022	198	200,640	153,198	(2,172)	351,864
Balances at Dec. 31, 2021	198	200,473	149,966	56	350,693
Net income					22,769
Balances at Sep. 30, 2022	199	201,213	165,590	(9,781)	357,221
Balances at Mar. 31, 2022	198	200,640	153,198	(2,172)	351,864
Net income			7,499		7,499
Other comprehensive (loss)				(4,479)	(4,479)
Common shares issued for employee stock purchase plan		102			102
Stock-based compensation		172			172
Cash dividends declared			(2,381)		(2,381)
Balances at Jun. 30, 2022	198	200,914	158,316	(6,651)	352,777
Net income			9,658		9,658
Other comprehensive (loss)				(3,130)	(3,130)
Common shares issued for employee stock purchase plan	1	124			125
Stock-based compensation		175			175
Cash dividends declared			(2,384)		(2,384)
Balances at Sep. 30, 2022	$ 199	$ 201,213	$ 165,590	$ (9,781)	$ 357,221