Condensed Consolidated Statements of Comprehensive Loss (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Net loss	$ (71,562)	$ (7,077)	$ (116,509)	$ (15,106)
Other comprehensive (loss) gain, net of tax:
Unrealized (loss) gain on investments	(659)	540	196	(1,184)
Loss on foreign currency translation	(127)	(191)	(249)	(390)
Other comprehensive (loss) gain, net of tax	(786)	349	(53)	(1,574)
Total comprehensive loss	$ (72,348)	$ (6,728)	$ (116,562)	$ (16,680)