Fair Value Of Financial Instruments (Assets Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
Available-for-sale Securities, Equity Securities	$ 11,772
Available-for-sale Securities, Equity Securities	11,772	11,364
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Available-for-sale Securities, Equity Securities	$ 11,772

For an unclassified balance sheet, this item represents equity securities categorized neither as held-to-maturity nor trading.

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