CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Dec. 31, 2016	$ 3,494	$ 6	$ 285	$ 284,149	$ (280,875)	$ (71)
Balance (in shares) at Dec. 31, 2016		569	28,470,148
Issuance of common stock from stock option awards	$ 1			1
Issuance of common stock from stock options awards (shares)	10,000		10,000
Stock-based compensation expense	$ 246			246
Net (loss) income	(249)				(249)
Foreign currency translation adjustment	(4)					(4)
Ending Balance at Dec. 31, 2017	3,488	$ 6	$ 285	284,396	(281,124)	(75)
Balance (in shares) at Dec. 31, 2017		569	28,480,148
Issuance of common stock from stock option awards	$ 74		$ 2	72
Issuance of common stock from stock options awards (shares)	173,130		173,130
Issuance of restricted common stock			$ 6	(6)
Issuance of restricted common stock (shares)	300,000		600,000
Stock-based compensation expense	$ 289			289
Net (loss) income	3,751				3,751
Foreign currency translation adjustment	(2)					(2)
Ending Balance at Dec. 31, 2018	$ 7,600	$ 6	$ 293	$ 284,751	$ (277,373)	$ (77)
Balance (in shares) at Dec. 31, 2018		569	29,253,278