Condensed Consolidated Statements of Stockholders' Equity - USD ($)	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity
Cumulative effect due to adoption of new accounting standard, net of taxes				$ 64,000
Balance (in shares) at Dec. 31, 2017	19,511,276	19,511,276
Beginning Balance at Dec. 31, 2017	$ 20,648,000	$ 20,000	$ 88,447,000	(67,812,000)	$ (7,000)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for compensation (in shares)		184,818
Stock-based compensation	1,108,000		1,108,000
Sales of common stock, net of offering costs (in shares)		5,714,286
Sales of common stock, net of offering costs	18,381,000	$ 6,000	18,375,000
Exercise of warrants, cashless (in warrants)		15,000
Exercise of warrants	$ 43,000		43,000
Common stock issued in exchange for warrants (in shares)	242,913
Net loss	$ (5,716,000)			(5,716,000)
Foreign currency translation adjustments, net of tax	$ 21,000				21,000
Balance (in shares) at Mar. 31, 2018	25,668,293	25,668,293
Ending Balance at Mar. 31, 2018	$ 34,549,000	$ 26,000	$ 107,973,000	$ (73,464,000)	$ 14,000