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Intangibles and Other Assets, Net - Identifiable Intangible and Other Assets (Detail) - USD ($) $ in Thousands | May 31, 2021 | Aug. 31, 2020
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Intangibles and Other Assets by Major Class [Line Items] |  |
Finite-Lived Intangible Assets, Net, Total | $ 54,266 | $ 60,416
Intangible assets not subject to amortization | 2,474 | 2,474
Prepaid and other assets | 26,349 | 22,026
Operating lease ROU assets | 41,621 | 62,389
Nonqualified savings plan investments | 45,816 | 35,744
Revolving notes issuance costs, net | 4,890 | 3,623
Assets held for sale | 5,413 | 3,650
Total Intangible and other assets, net | 180,829 | 190,322
Customer Relationships |  |
Intangibles and Other Assets by Major Class [Line Items] |  |
Finite lived intangible assets gross | 89,722 | 89,722
Accumulated amortization | (62,237) | (56,509)
Other Intangible Assets |  |
Intangibles and Other Assets by Major Class [Line Items] |  |
Finite lived intangible assets gross | 38,928 | 37,798
Accumulated amortization | $ (12,147) | $ (10,595)

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