Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2016	$ 22	$ (1,643)	$ 127,736	$ (119,584)	$ 6,531
Balance, shares at Dec. 31, 2016	2,230,000	54,000
Common stock issued	$ 1				1
Common stock issued, shares	34,000
Common stock issued through offerings	$ 126		13,152		13,278
Common stock issued through offerings, shares	12,693,000
Shares issued in debt exchange	$ 38		11,605		11,643
Shares issued in debt exchange, shares	3,795,000
Exercise of warrants	$ 14		1,252		1,266
Exercise of warrants, shares	1,400,000
Treasury stock purchased		$ (28)			(28)
Treasury stock purchased, shares		10,000
Issuance of warrants			7,337		7,337
Stock-based compensation expense			206		206
Net income (loss)				(3,892)	(3,892)
Balance at Jun. 30, 2017	$ 201	$ (1,671)	$ 161,288	$ (123,476)	$ 36,342
Balance, shares at Jun. 30, 2017	20,152,000	64,000