Consolidated Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Non-Voting Common Stock [Member]	Series C Preferred Stock [Member]	Total
Balance at Dec. 31, 2019	$ 54	$ 86,903	$ (2,932)	$ 28	$ (3,389)			$ 80,664
Net income			12,074					12,074
Other comprehensive income (loss)				118				118
Restricted stock expense, net of forfeitures		350						350
Stock options exercised		36						36
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes					(27)			(27)
Purchase of treasury shares					(648)			(648)
Conversion of 12,607 shares of Series C preferred stock to 1,260,700 shares of non-voting common stock		(13)					13
Balance at Jun. 30, 2020	54	87,276	9,142	146	(4,064)	$ 13	13	92,567
Balance at Mar. 31, 2020	54	87,046	(926)	172	(3,465)			82,881
Net income			10,068					10,068
Other comprehensive income (loss)				(26)				(26)
Restricted stock expense, net of forfeitures		207						207
Stock options exercised		36						36
Purchase of treasury shares					(599)			(599)
Conversion of 12,607 shares of Series C preferred stock to 1,260,700 shares of non-voting common stock		(13)				13
Balance at Jun. 30, 2020	54	87,276	9,142	146	(4,064)	13	$ 13	92,567
Balance at Dec. 31, 2020	54	87,637	26,479	96	(4,069)	13		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)
Cash dividends declared on common stock			(392)					(392)
Balance at Jun. 30, 2021	54	88,099	35,997	50	(4,354)	13		119,859
Balance at Mar. 31, 2021	54	87,904	32,704	67	(4,091)	13		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)
Cash dividends declared on common stock			(196)					(196)
Balance at Jun. 30, 2021	$ 54	$ 88,099	$ 35,997	$ 50	$ (4,354)	$ 13		$ 119,859