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Nature Of Operations And Significant Accounting Policies (Reconciliation Of Equity In Unconsolidated Affiliates) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2010
Accounting Policies [Abstract]      
Equity in pretax earnings reported in the consolidated statements of income $ 3,195 $ 8,634 $ 22,376
Less: Equity in income taxes (1,130) (3,651) (7,356)
Equity in net income 2,065 4,983 15,020
Less: Dividends received on investments (16,723) (1,252) (11,983)
Equity in net income, net of dividends, reported in the consolidated statements of cash flows $ (14,658) $ 3,731 $ 3,037