Condensed Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income
Balance (in shares) at Dec. 31, 2016	12,468,647	12,468,647
Beginning Balance at Dec. 31, 2016	$ 10,133	$ 12	$ 56,331	$ (46,159)	$ (51)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for compensation (in shares)		452,200
Stock-based compensation	1,962		1,962
Sales of common stock, net of offering costs (in shares)		1,626,898
Sales of common stock, net of offering costs	7,468	$ 2	7,466
Exercise of warrants, cashless (in shares)		45,310
Exercise of stock options (in shares)		27,818
Exercise of stock options	54		54
Net loss	(9,157)			(9,157)
Foreign currency translation adjustments, net of tax	$ 63				63
Balance (in shares) at Jun. 30, 2017	14,620,873	14,620,873
Ending Balance at Jun. 30, 2017	$ 10,523	$ 14	$ 65,813	$ (55,316)	$ 12