Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (11,497)	$ 17,097	$ (1,298)
Other comprehensive income (loss), net of tax:
Unrealized foreign currency translation adjustments	$ (9)	220	(1,126)
Reclassification of foreign currency translation adjustments included in net income (loss)		(745)	0
Unrealized loss on sale of securities	$ (8)	0	(4)
Total comprehensive income (loss)	$ (11,514)	$ 18,062	$ (2,428)