Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2017	$ 55	$ 122,924	$ 77	$ (121,106)	$ 1,950
Balance, shares at Dec. 31, 2017	55,293,267
Net loss				(2,661)	(2,661)
Cumulative effect of adoption of ASC 606				278	278
Net unrealized losses on foreign currency translation, net of tax			(4)		(4)
Issuance of common stock, net of equity issuance costs of $19	$ 9	3,769			3,778
Issuance of common stock, net of equity issuance costs of $19, shares	8,440,669
Cashless exercise of stock options
Cashless exercise of stock options, shares	22,245
Cancelled restricted stock shares
Cancelled restricted stock shares, shares	(45,859)
Exercise of warrants		138			138
Exercise of warrants, shares	456,666
Noncash stock-based compensation		588			588
Balance at Sep. 30, 2018	$ 64	$ 127,419	$ 73	$ (123,489)	$ 4,067
Balance, shares at Sep. 30, 2018	64,166,988