CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Total
Balance, beginning at Dec. 31, 2017	$ 2	$ 267,857	$ (5,297)	$ (2,108)	$ (203,996)	$ 56,458
Balance, beginning (in shares) at Dec. 31, 2017	18,728,912
Net income (loss)					(766)	(766)
Other comprehensive income (loss)				(146)		(146)
Stock-based compensation expense		376				376
Balance, ending at Mar. 31, 2018	$ 2	268,233	(5,297)	(2,254)	(204,762)	55,922
Balance, ending (in shares) at Mar. 31, 2018	18,728,912
Balance, beginning at Dec. 31, 2018	$ 2	268,794	(5,297)	(2,507)	(213,096)	$ 47,896
Balance, beginning (in shares) at Dec. 31, 2018	18,955,264					18,955,264
Net income (loss)					1,443	$ 1,443
Other comprehensive income (loss)				149		149
Stock-based compensation expense		52				52
Balance, ending at Mar. 31, 2019	$ 2	$ 268,846	$ (5,297)	$ (2,358)	$ (211,653)	$ 49,540
Balance, ending (in shares) at Mar. 31, 2019	18,955,264					18,955,264