Commitments and Contingencies Text figures (Details) (USD $)	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Property, Plant and Equipment [Line Items]
Operating Leases, Rent Expense	$ 1,800,000	$ 1,700,000	$ 1,600,000
Commitments and Contingencies	26,352,000	7,798,000
Loss Contingency, Damages Sought, Value	500,000
Accrued loss contingency, damages for lawsuits	415,000
Mortgage Loans on Real Estate [Member]
Property, Plant and Equipment [Line Items]
Commitments and Contingencies	$ 13,709,000	$ 2,131,000

Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details