Consolidated Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Non-Voting Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2020	$ 54	$ 13	$ 87,637	$ 26,479	$ 96	$ (4,069)	$ 110,210
Net income				9,910			9,910
Other comprehensive income (loss)					(46)		(46)
Issuance of stock based incentive plan shares, net of forfeitures
Restricted stock expense, net of forfeitures			356				356
Stock options exercised			106				106
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes						(22)	(22)
Purchase of treasury shares						(263)	(263)
Dividends declared				(392)			(392)
Balance at Jun. 30, 2021	54	13	88,099	35,997	50	(4,354)	119,859
Balance at Mar. 31, 2021	54	13	87,904	32,704	67	(4,091)	116,651
Net income				3,489			3,489
Other comprehensive income (loss)					(17)		(17)
Restricted stock expense, net of forfeitures			195				195
Purchase of treasury shares						(263)	(263)
Dividends declared				(196)			(196)
Balance at Jun. 30, 2021	54	13	88,099	35,997	50	(4,354)	119,859
Balance at Dec. 31, 2021	55	13	88,528	44,084	(170)	(7,180)	125,330
Net income				9,244			9,244
Other comprehensive income (loss)					(1,267)		(1,267)
Issuance of stock based incentive plan shares, net of forfeitures	1		(1)
Restricted stock expense, net of forfeitures			402				402
Stock options exercised			132				132
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes						(48)	(48)
Purchase of treasury shares						(588)	(588)
Dividends declared				(514)			(514)
Balance at Jun. 30, 2022	56	13	89,061	52,814	(1,437)	(7,816)	132,691
Balance at Mar. 31, 2022	55	13	88,708	48,345	(1,220)	(7,559)	128,342
Net income				4,726			4,726
Other comprehensive income (loss)					(217)		(217)
Issuance of stock based incentive plan shares, net of forfeitures	1		(1)
Restricted stock expense, net of forfeitures			222				222
Stock options exercised			132				132
Purchase of treasury shares						(257)	(257)
Dividends declared				(257)			(257)
Balance at Jun. 30, 2022	$ 56	$ 13	$ 89,061	$ 52,814	$ (1,437)	$ (7,816)	$ 132,691