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Derivative Instruments and Hedging Activities - Narrative (Details) $ in Thousands, $ in Millions	12 Months Ended
	Aug. 29, 2020 USD ($)	Aug. 29, 2020 CAD ($)	Aug. 31, 2019 USD ($)	Jun. 30, 2018 CAD ($) contract
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount reclassified from accumulated other comprehensive loss	$ (31,970)		$ (33,688)
Canadian Dollars
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Average exchange rate				0.7814
Forward Contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional value (CAD)		$ 5.0		$ 12.1
Amount reclassified from accumulated other comprehensive loss	100
Reclassification from accumulated other comprehensive loss to revenue	200
Forward Contracts \| Canadian Dollars
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of derivatives entered into to exchange Canadian dollars for U.S. dollars \| contract				12
Forward Contracts \| Prepaid Expenses and Other Current Assets
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of the contracts	$ 100