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Financing Arrangement (Details) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2013 | Jul. 31, 2013 | Jan. 31, 2013
Financing Arrangements (Textual) [Abstract] |  |  |
Maximum borrowing amount of revolving loan |  | $ 4,250,000 |
Interest rate on borrowings under the line of credit. |  | LIBOR plus 2.25% |
Interest rate |  | 2.25% |
Maximum borrowing amount limit of letter of credit |  | 10,000,000 |
Borrowings outstanding under bank financing arrangements |  | $ 0 | $ 0
Expiration date of financing arrangements | May 31, 2015 |  |
Ratio of total funded debt to EBITDA |  | 2 | 2
Fixed charge coverage ratio |  | 1.25 | 1.25
Ratio of senior funded debt to EBITDA |  | 1.50 | 1.50

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- Definition Debt instrument covenant fixed charge coverage ratio. + References No definition available. + Details
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- Details
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- Definition The Maximum amount of standby letters of credits that may be outstanding. + References No definition available. + Details
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- Definition Maximum funded debt to adjusted EBITDA ratio. + References No definition available. + Details
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- Definition 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 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 Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: 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 Date the credit facility terminates, 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 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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