CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2018	$ 16	$ (1,842)	$ 381,441	$ (336,253)	$ 43,362
Balance (in shares) at Dec. 31, 2018	15,982,622	(273,937)
Increase (Decrease) in Stockholders' Equity
Stock issued for restricted stock (in shares)	141,384
Stock issued under defined contribution 401(k) retirement savings plan			187		187
Stock issued under defined contribution 401(k) retirement savings plan (in shares)	135,636
Share-based compensation			255		255
Net income (loss)				(1,042)	(1,042)
Balance at Mar. 31, 2019	$ 16	$ (1,842)	381,883	(337,295)	42,762
Balance (in shares) at Mar. 31, 2019	16,259,642	(273,937)
Balance at Dec. 31, 2019	$ 17	$ (1,842)	383,361	(340,776)	$ 40,760
Balance (in shares) at Dec. 31, 2019	16,830,930	(273,937)			16,830,930
Increase (Decrease) in Stockholders' Equity
Stock issued for restricted stock (in shares)	83,050
Share-based compensation			308		$ 308
Net income (loss)				954	954
Balance at Mar. 31, 2020	$ 17	$ (1,842)	$ 383,669	$ (339,822)	$ 42,022
Balance (in shares) at Mar. 31, 2020	16,913,980	(273,937)			16,913,980