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Contingent Liabilities and Commitments (Tables) | 12 Months Ended
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Jul. 31, 2012
Principal Commercial Commitments under Repurchase Agreements and Dealer Inventory Financing Guarantees | Our principal commercial commitments under repurchase agreements and dealer inventory financing guarantees at July 31, 2012 and 2011 are summarized in the following chart:
|  |  |  | Total Amount Committed |  |  |  |  | Term of
|  |  |  |  |  | July 31, 2012 |  |  |  |  | July 31, 2011 |  |  |  |  | Commitments
Commitment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guarantee on dealer financing |  |  |  |  |  | $ | 900 |  |  |  |  | $ | 1,684 |  |  |  |  | Various
Standby repurchase obligation on dealer financing |  |  |  |  |  | $ | 861,738 |  |  |  |  | $ | 791,933 |  |  |  |  | Up to eighteen months
Losses due to Repurchases under Repurchase Agreements | The table below reflects losses incurred under repurchase agreements for the past three fiscal years. Management believes that any future losses under these agreements will not have a significant effect on the Company’s consolidated financial position or results of operations.
|  | Fiscal 2012 |  |  |  |  | Fiscal 2011 |  |  |  |  | Fiscal 2010 |
Cost of units repurchased |  |  | $ 2,881 |  |  |  |  |  | $ 5,876 |  |  |  |  |  | $ 10,001 |
Realization of units resold |  |  | 2,521 |  |  |  |  |  | 5,023 |  |  |  |  |  | 8,665 |
Losses due to repurchase |  |  | $ 360 |  |  |  |  |  | $ 853 |  |  |  |  |  | $ 1,336 |

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- Definition Schedule Of Amount Paid To Repurchase Units Under Repurchase Agreements [Table Text Block] + References No definition available. + Details
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- Definition The entire disclosure for repurchase agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 4 -Section 08 -Paragraph m -Subparagraph 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 + Details
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