Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Total
Beginning Balance at Dec. 31, 2017			$ 149,425	$ (264)	$ (145,055)	$ 4,106
Beginning Balance (in shares) at Dec. 31, 2017	6,234,898	5,559		12
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance common stock in equity raise, net of offering cost	$ 1		2,699			2,700
Issuance common stock in equity raise, net of offering cost (in shares)	2,222,222
Stock-based compensation			188			188
Stock-based compensation (in shares)	60,000
Cumulative effect of the changes related to adoption of ASC 606					3,245	3,245
Net Loss					(1,486)	(1,486)
Ending Balance at Mar. 31, 2018	$ 1		$ 152,312	$ (264)	$ (143,296)	$ 8,753
Ending Balance (in shares) at Mar. 31, 2018	8,517,120	5,559		12