Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 31, 2020	7,308,685
Balance at Dec. 31, 2020	$ 86,886	$ 69,578	$ 4,284	$ (16,938)	$ 143,810
Net income		8,592			8,592
Other comprehensive income (loss)			(391)		(391)
Treasury shares acquired				(4,192)	(4,192)
Cash dividends		(2,020)			(2,020)
Stock-based compensation, net (in shares)	6,583
Stock-based compensation, net	$ 151				151
Stock options exercised (in shares)	10,650
Stock options exercised	$ 94				94
Balance (in shares) at Jun. 30, 2021	7,325,918
Balance at Jun. 30, 2021	$ 87,131	76,150	3,893	(21,130)	146,044
Balance (in shares) at Mar. 31, 2021	7,323,487
Balance at Mar. 31, 2021	$ 87,073	72,729	2,917	(18,049)	144,670
Net income		4,425			4,425
Other comprehensive income (loss)			976		976
Treasury shares acquired				(3,081)	(3,081)
Cash dividends		(1,004)			(1,004)
Stock-based compensation, net (in shares)	2,431
Stock-based compensation, net	$ 58				58
Balance (in shares) at Jun. 30, 2021	7,325,918
Balance at Jun. 30, 2021	$ 87,131	76,150	3,893	(21,130)	$ 146,044
Balance (in shares) at Dec. 31, 2021	7,330,548				5,888,737
Balance at Dec. 31, 2021	$ 87,131	83,971	3,462	(29,229)	$ 145,335
Net income		7,922			7,922
Other comprehensive income (loss)			(21,053)		(21,053)
Treasury shares acquired				(2,422)	(2,422)
Cash dividends		(1,993)			(1,993)
Stock-based compensation, net (in shares)	16,978
Stock-based compensation, net	$ 431				$ 431
Balance (in shares) at Jun. 30, 2022	7,347,526				5,810,351
Balance at Jun. 30, 2022	$ 87,562	89,900	(17,591)	(31,651)	$ 128,220
Balance (in shares) at Mar. 31, 2022	7,347,526
Balance at Mar. 31, 2022	$ 87,562	86,804	(6,674)	(30,048)	137,644
Net income		4,089			4,089
Other comprehensive income (loss)			(10,917)		(10,917)
Treasury shares acquired				(1,603)	(1,603)
Cash dividends		(993)			$ (993)
Balance (in shares) at Jun. 30, 2022	7,347,526				5,810,351
Balance at Jun. 30, 2022	$ 87,562	$ 89,900	$ (17,591)	$ (31,651)	$ 128,220