Certain Financial Statement Information Net Income/Loss Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Schedule of Reconciliation of Shares Used to Calculate Basic and Diluted Net (Loss) Income Per Share
Net (loss) income	$ (13,065)	$ 10,857
Shares used in net (loss) income per share computation:
Weighted average common shares outstanding, basic (shares)	77,916	69,360
Net effect of dilutive common share equivalents (shares)	0	874
Weighted average common shares outstanding, diluted (shares)	77,916	70,234
Basic net (loss) income per share	$ (0.17)	$ 0.16
Diluted net (loss) income per share	$ (0.17)	$ 0.15