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Long-Term Obligations - Schedule of Borrowings on Revolving Loan Agreement (Details) (USD $) In Thousands, unless otherwise specified | Jul. 31, 2014 | Jul. 31, 2013
--- | --- | ---
Line of Credit Facility [Line Items] |  |
Notes payable | $ 61,422 | $ 50,613
Weighted average borrowing rate | 2.0311% | 1.2423%
USD-Denominated Borrowing Credit Revolver [Member] |  |
Line of Credit Facility [Line Items] |  |
Interest rate | 1.2472% | 1.2787%
Notes payable | 42,000 | 39,000
USD-Denominated Borrowings [Member] | USD-denominated credit facility China [Member] |  |
Line of Credit Facility [Line Items] |  |
Interest rate | 1.3548% | 1.1201%
Notes payable | 6,923 | 11,613
CNY-Denominated Borrowings [Member] [Member] | USD-denominated credit facility China [Member] |  |
Line of Credit Facility [Line Items] |  |
Interest rate | 5.04% |
Notes payable | $ 12,499 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer. + 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 210.5-02.19,20) -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, 20 -Article 5 + Details
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- Definition Weighted average interest rate of short-term debt outstanding. + 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)) -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 -Subparagraph b -Article 5 + Details
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