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Contingent Liabilities And Commitments - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 01, 2012 | Jul. 31, 2012 LegalMatter | Jul. 31, 2011
Loss Contingencies [Line Items] |  |  |
Repurchase and guarantee reserve balances |  | $ 3,150 | $ 3,479
Chassis delivered to customers in days |  | 90 days |
Chassis consigned inventory |  | 21,507 |
Additional chassis provided by customers |  | 9,762 |
Suits currently pending |  | 500 |
Payments for the benefit of settlement class | 4,700 | 6,250 |
Heartland Recreational Vehicles, LLC, |  |  |
Loss Contingencies [Line Items] |  |  |
Payments for the benefit of settlement class |  | $ 553 |
Multidistrict Litigation Court |  |  |
Loss Contingencies [Line Items] |  |  |
Suits currently pending |  | 4,100 |

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- Definition Chassis consigned inventory. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Chassis delivered to customers in days. + References No definition available. + Details
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- Definition Repurchase and guarantee reserve balances. + References No definition available. + Details
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Balance Type: | credit
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- Definition Total additional chassis provided by customers. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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- Definition The total amount of pending claims pertaining to a loss contingency accrual as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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- Definition The amount of cash paid for the settlement of litigation or for other legal issues during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 27 -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 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585 + Details
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