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Schedule of Major Classifications of Inventories (Detail) - USD ($) $ in Thousands | Jul. 31, 2016 | Jul. 31, 2015
--- | --- | ---
Inventory [Line Items] |  |
Work in process | $ 97,872 | $ 51,556
Raw materials | 173,362 | 133,482
Chassis | 102,686 | 37,739
Subtotal | 434,004 | 276,515
Excess of FIFO costs over LIFO costs | (30,135) | (30,400)
Total inventories | 403,869 | 246,115
Recreational vehicles |  |
Inventory [Line Items] |  |
Finished products | 39,943 | 35,693
Other |  |
Inventory [Line Items] |  |
Finished products | $ 20,141 | $ 18,045

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