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, 2019	$ 54		$ 86,903	$ (2,932)	$ 28	$ (3,389)	$ 80,664
Net income				29,608			29,608
Other comprehensive income (loss)					68		68
Issuance of stock based incentive plan shares, net of forfeitures
Restricted stock expense, net of forfeitures			711				711
Stock options exercised			36				36
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes						(32)	(32)
Purchase of treasury shares						(648)	(648)
Conversion of shares of Series C preferred stock to shares of non-voting common stock		13	(13)
Dividends declared				(197)			(197)
Balance at Dec. 31, 2020	54	13	87,637	26,479	96	(4,069)	110,210
Net income				18,453			18,453
Other comprehensive income (loss)					(266)		(266)
Issuance of stock based incentive plan shares, net of forfeitures	1		(1)
Restricted stock expense, net of forfeitures			707				707
Stock options exercised			185				185
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes						(43)	(43)
Acquisition of treasury shares surrendered upon exercise of stock options for payment of taxes and exercise proceeds						(96)	(96)
Purchase of treasury shares						(2,972)	(2,972)
Dividends declared				(848)			(848)
Balance at Dec. 31, 2021	55	13	88,528	44,084	(170)	(7,180)	125,330
Net income				18,164			18,164
Other comprehensive income (loss)					(1,867)		(1,867)
Issuance of stock based incentive plan shares, net of forfeitures	1		(1)
Restricted stock expense, net of forfeitures			899				899
Stock options exercised			387				387
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes						(73)	(73)
Acquisition of treasury shares surrendered upon exercise of stock options for payment of taxes and exercise proceeds						(100)	(100)
Purchase of treasury shares						(2,339)	(2,339)
Dividends declared				(1,153)			(1,153)
Balance at Dec. 31, 2022	$ 56	$ 13	$ 89,813	$ 61,095	$ (2,037)	$ (9,692)	$ 139,248