Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Mar. 31, 2016	$ (15)	$ 24,348	$ 2,941	$ (26,305)	$ (999)
Beginning Balance, Shares at Mar. 31, 2016		14,438,627
Exercise of finder’s warrants	1,398	$ 1,549	(151)
Exercise of finder's warrants, Shares		365,120
Issuance of common stock in public offering and private placement	6,548	$ 6,548
Issuance of common stock in public offering and private placement, Shares		2,061,025
Issuance of warrants in public offering and private placement	1,504		1,504
Share issuance costs	(1,509)	$ (1,875)	366
Stock-based compensation expense	1,462		1,462
Fair value of non-employee vested options reallocated to derivative financial instruments	(268)		(268)
Agent compensation option exercise	1	$ 1
Agent compensation option exercise, Shares		150
Proceeds from the exercise of stock options and warrants	204	$ 326	(122)
Proceeds from the exercise of stock options and warrants, Shares		61,198
Net loss	(12,040)			(12,040)
Foreign currency translation adjustments	(729)				(729)
Ending Balance at Dec. 31, 2016	(3,444)	$ 30,897	5,732	(38,345)	(1,728)
Ending Balance, Shares at Dec. 31, 2016		16,926,120
Issuance of common stock in public offering	9,187	$ 9,187
Issuance of common stock in public offering, Shares		1,311,000
Issuance of common stock and warrants in private placement	11,691	$ 11,691
Issuance of common stock and warrants in private placement, Shares		1,446,016
Fair value of warrants issued in connection with the December 2017 financing classified as derivative financial instruments	(3,017)	$ (3,017)
Share issuance costs	(1,321)	(1,321)
Stock-based compensation expense	1,719		1,719
Proceeds from the exercise of stock options and warrants	2,588	$ 2,588
Proceeds from the exercise of stock options and warrants, Shares		492,826
Vesting of restricted stock units, net of taxes, shares		2,264
Reclassification of exercised stock options and warrants from additional paid-in capital		$ 849	(849)
Reclassification of liability classified warrants upon exercise	1,356	1,356
Net loss	(28,024)			(28,024)
Foreign currency translation adjustments	1,775				1,775
Ending Balance at Dec. 31, 2017	$ (7,490)	$ 52,230	$ 6,602	$ (66,369)	$ 47
Ending Balance, Shares at Dec. 31, 2017		20,178,226