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Long-Term Debt (Details Textuals) (USD $) In Millions, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2012 | Jul. 31, 2012 Minimum | Jul. 31, 2012 Maximum | Jul. 31, 2012 Revolving Credit Facility | Jul. 31, 2012 Revolving Credit Facility Minimum | Jul. 31, 2012 Revolving Credit Facility Maximum | Jul. 31, 2012 Alternative currency borrowing credit facility | Jul. 31, 2012 Letter of Credit | Jul. 31, 2012 Term Loan Facility | Sep. 29, 2011 Term Loan Facility | Sep. 29, 2011 Original Limit Term Loan Facility
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum borrwing capacity |  |  |  | $ 100.0 |  |  | $ 100.0 | $ 50.0 |  | $ 500.0 | $ 400.0
Outstanding borrowings |  |  |  |  |  |  |  |  | 443.8 |  |
Quarterly payments for term loan |  |  |  |  |  |  |  |  | 18.8 |  |
Reference rate basis | (i) the Eurocurrency Rate; (ii) the Federal Funds Rate; or (iii) the Prime Rate |  |  |  |  |  |  |  |  |  |
Reference rate | 0.25% |  |  |  |  |  |  |  |  |  |
Applicable interest rate added to reference rate in order to compute variable interest rate | 1.50% | 1.50% | 2.00% |  |  |  |  |  |  |  |
Maturity date |  |  |  | Dec. 14, 2015 |  |  |  |  |  |  |
Commitment fee percentage |  |  |  |  | 0.075% | 0.125% |  |  |  |  |
Principal repayment of term loan | 56.3 |  |  |  |  |  |  |  |  |  |
Deferred financing costs | $ 1.6 |  |  |  |  |  |  |  |  |  |

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- Definition This element represents principal repayment of long term debt. + References No definition available. + Details
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- Definition Represents the reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate on specific date. + References No definition available. + Details
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- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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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