Condensed Consolidated Statements of Stockholders' Equity - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
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)		532,031
Stock-based compensation	2,876		2,876
Sales of common stock, net of offering costs (in shares)		3,372,479
Sales of common stock, net of offering costs	15,025	$ 4	15,021
Exercise of warrants, cashless (in shares)		78,831
Exercise of stock options (in shares)		27,818
Exercise of stock options	54		54
Net loss	(13,341)			(13,341)
Foreign currency translation adjustments, net of tax	$ 46				46
Balance (in shares) at Sep. 30, 2017	16,479,806	16,479,806
Ending Balance at Sep. 30, 2017	$ 14,793	$ 16	$ 74,282	$ (59,500)	$ (5)