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Income Taxes (Schedule Of Income (Loss) Before Income Taxes) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2010
Income Taxes [Abstract]      
U.S $ (107,301) $ (61,436) $ (43,672)
Foreign (28,157) (108,895) 80,428
(Loss) income before income tax expense $ (135,458) $ (170,331) $ 36,756