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Income Taxes (Schedule Of U.S. And Foreign Components Of Income Before Income Taxes And Other Items) (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Income Tax Disclosure [Abstract]      
United States $ 37,877 $ 27,181 $ 9,156
Foreign 134,701 131,286 221,534
Total $ 172,578 $ 158,467 $ 230,690