Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (1,127)	$ 20,452	$ (3,356)	$ 21,768
Other comprehensive (loss) income, net of tax:
Unrealized foreign currency translation adjustments	(1)	133	(4)	184
Unrealized loss on sale of securities	(1)	0	(5)	0
Total comprehensive (loss) income	$ (1,129)	$ 20,585	$ (3,365)	$ 21,952