Income Taxes (Schedule Of Provision For (Benefit From) Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010
Income Taxes [Abstract]
Domestic, Current	$ 303	$ (972)	$ 50
Foreign, Current	56,256	26,798	(18,908)
Total, Current	56,559	25,826	(18,858)
Domestic, Deferred	386	(319)	1,077
Foreign, Deferred	(2,829)	(3,331)	(17,967)
Total, Deferred	(2,443)	(3,650)	(16,890)
Provision for income taxes	$ 54,116	$ 22,176	$ (35,748)