Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (13,164)	$ (8,350)	$ (11,721)
Other comprehensive loss, net of tax:
Unrealized foreign currency translation adjustments	(4)	(51)	(27)
Total comprehensive loss	$ (13,168)	$ (8,401)	$ (11,748)