Long-Term Debt - Components of Long-Term Debt (Details) - USD ($) $ in Thousands	Aug. 28, 2021	Aug. 29, 2020
Debt Instrument [Line Items]
Long-term debt, gross	$ 600,000	$ 600,000
Convertible Notes unamortized interest discount	(60,366)	(74,294)
Debt issuance cost, net	(11,075)	(13,076)
Long-term debt, net	528,559	512,630
Fair value of long-term debt, excluding debt issuance costs	726,606	674,709
ABL Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	0	0
Senior Secured Notes
Debt Instrument [Line Items]
Long-term debt, gross	300,000	300,000
Convertible Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 300,000	$ 300,000