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Employee Benefit Plans (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Mar. 31, 2012 | Mar. 31, 2011 | Mar. 31, 2010
Employee Benefit Plans [Abstract] |  |  |
Percentage of common stock matched under deferred compensation plan | 50.00% |  |
First certain percentage of eligible contribution under deferred compensation plan | 6.00% |  |
Recorded expense under deferred compensation plan | $ 0.7 | $ 0.8 | $ 0.7

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- Definition Percentage of common stock matched under deferred compensation plan for specified percentage of eligible contribution. + References No definition available. + Details
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- Definition Percentage of eligible contribution under deferred compensation plan. + References No definition available. + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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- Details
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