v2.4.0.6

Subsequent Event (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Mar. 31, 2012 | Apr. 19, 2012
Subsequent Event [Line Items] |  |
Revolving credit agreement initiation date | Apr. 19, 2012 |
Borrowing limit under the unsecured revolving credit facility |  | $ 100
Basis spread on variable interest rate |  | 0.50%
Covenant terms, debt coverage ratio |  | 1.75
Covenant terms, interest coverage ratio |  | 3.50
Standby Letters Of Credit [Member] |  |
Subsequent Event [Line Items] |  |
Borrowing limit under the unsecured revolving credit facility |  | $ 15

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- Definition Line Of Credit Facility, Covenant Terms, Debt Coverage Ratio Requirement + References No definition available. + Details
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- Definition Line Of Credit Facility, Covenant Terms, Interest Coverage Ratio Requirement + References No definition available. + Details
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- Definition The percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Date the credit facility first became available, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Details
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