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Schedule of Deferred Income Taxes (Detail) - USD ($) $ in Thousands | Jul. 31, 2016 | Jul. 31, 2015
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Schedule of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Total net current deferred income tax asset |  | $ 59,864
Net deferred tax asset | $ 53,417 | 39,301
Current Deferred Income Tax Assets (Liabilities) |  |
Schedule of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Inventory basis |  | 467
Employee benefits |  | 3,625
Self-insurance reserves |  | 10,411
Accrued product warranties |  | 39,486
Accrued incentives |  | 3,959
Sales returns and allowances |  | 1,520
Accrued expenses |  | 2,067
Unrecognized tax benefits |  | 367
Other |  | (2,038)
Total net current deferred income tax asset |  | 59,864
Noncurrent Deferred Income Tax Assets (Liabilities) |  |
Schedule of Deferred Income Tax Assets and Liabilities [Line Items] |  |
Inventory basis | 1,196 |
Employee benefits | 4,587 |
Self-insurance reserves | 10,504 |
Accrued product warranties | 43,388 |
Accrued incentives | 5,154 |
Sales returns and allowances | 1,642 |
Accrued expenses | 2,607 |
Property, plant and equipment | (4,164) | (707)
Deferred compensation | 9,145 | 6,367
Tax credit carry forward | 256 | 110
Intangibles | (22,308) | (30,246)
Unrecognized tax benefits | 4,105 | 3,913
Other | $ (2,695) |
Total net long-term deferred income tax (liability) |  | $ (20,563)

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