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Fair Value Measurements - Additional Information (Detail) - Fair Value Measurements, Recurring - USD ($) $ in Thousands | May 09, 2020 | Aug. 31, 2019
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Short-term marketable debt securities | $ 34,381 | $ 67,958
Long-term marketable debt securities | 81,836 | $ 70,968
Cash flow hedging instruments | $ 16,842 |

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