Unaudited Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (7,281)	$ (7,325)	$ (22,533)	$ (17,680)
Other comprehensive gain (loss), net of tax:
Foreign currency translation gain (loss)	401	111	1,221	(541)
Total other comprehensive gain (loss), net of tax	401	111	1,221	(541)
Comprehensive loss	$ (6,880)	$ (7,214)	$ (21,312)	$ (18,221)