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Inventories - Schedule of Major Classifications of Inventories (Detail) - USD ($) $ in Thousands | Jan. 31, 2020 | Jul. 31, 2019
--- | --- | ---
Inventory [Line Items] |  |
Work in process | $ 127,910 | $ 126,636
Raw materials | 290,170 | 300,721
Chassis | 221,339 | 155,099
Subtotal | 972,958 | 873,532
Excess of FIFO costs over LIFO costs | (46,044) | (45,544)
Total inventories, net | 926,914 | 827,988
Recreational vehicles |  |
Inventory [Line Items] |  |
Finished products | 268,191 | 230,483
Other |  |
Inventory [Line Items] |  |
Finished products | $ 65,348 | $ 60,593

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