Impairment of Long-Lived Assets, Store Closings, Discontinued Operations and Property Held for Sale - Schedule of Abandoned Leased Facilities (Details) - USD ($) $ in Thousands	Aug. 25, 2021	Aug. 26, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating lease liabilities - current		$ 3,903
Operating lease liabilities - non-current	$ 17,797	17,797
Total lease liabilities	7,181	21,700
Accrued expenses and other liabilities		19,569
Discontinued Operations, Abandonment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating lease liabilities - current		365
Operating lease liabilities - non-current		2,348
Total lease liabilities	1,656	2,713
Accrued expenses and other liabilities	1,381	2,088
Accrued lease termination expense	$ 3,037	$ 4,801