Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (3,765)	$ (11,497)	$ 17,097
Other comprehensive income (loss), net of tax:
Unrealized foreign currency translation adjustments	(26)	(9)	220
Reclassification of foreign currency translation adjustments included in net income (loss)	0	0	745
Unrealized loss on sale of securities	0	(8)	0
Total comprehensive income (loss)	$ (3,791)	$ (11,514)	$ 18,062