Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2017	$ 58	$ (325)	$ 129,027	$ (132,562)	$ (3,802)
Balance, shares at Dec. 31, 2017	5,760
Stock-based compensation			224		224
Net loss				(1,027)	(1,027)
Balance at Dec. 31, 2018	$ 58	(325)	129,251	(133,589)	(4,605)
Balance, shares at Dec. 31, 2018	5,760
Stock-based compensation			189		189
Warrants issued associated with long-term liabilities			211		211
Net loss				(1,086)	(1,086)
Balance at Dec. 31, 2019	$ 58	$ (325)	$ 129,651	$ (134,675)	$ (5,291)
Balance, shares at Dec. 31, 2019	5,760