Net Assets in Liquidation (Details) $ / shares in Units, $ in Thousands			9 Months Ended	12 Months Ended
	Jun. 29, 2021 USD ($)	Nov. 19, 2020 USD ($)	Aug. 25, 2021 USD ($) lease $ / shares shares	Jun. 02, 2021 lease	Nov. 18, 2020 USD ($)	Aug. 26, 2020 USD ($) shares	Aug. 28, 2019 USD ($)
Finite-Lived Intangible Assets [Line Items]
Total Shareholders' Equity as of November 18, 2020					$ 70,763	$ 73,599	$ 101,030
Increase due to estimated net realizable value of properties and business units		$ 78,985
Decrease due to write-off of deferred financing costs		(2,260)
Decrease due to write-off of operating lease right-of-use assets		(14,829)
Net increase due to write-off of deferred assets, deferred income and goodwill		1,952
Liability for estimated costs in excess of estimated receipts during liquidation		(17,270)
Adjustment to reflect the change to the liquidation basis of accounting		46,578
Changes in estimated cash flows during liquidation			$ (15,083)
Gain (loss) on actual and projected sale closing costs			(1,200)
Gain (loss) on corporate general and administrative costs			$ (2,000)
Liquidating distributions (in dollars per share) | $ / shares			$ 5.00
Common stock, shares outstanding (in shares) | shares			30,973,755			30,625,470
Number of leases settled and terminated | lease				29
Number of leases with reduced payment | lease			1
Settlement percentage of undiscounted base rent payments that would have been due			21.00%
PPP Loan | Loans Payable
Finite-Lived Intangible Assets [Line Items]
Forgiveness of debt	$ 10,000
Scenario, Adjustment
Finite-Lived Intangible Assets [Line Items]
Estimated value of net assets in liquidation as of November 19, 2020		$ 117,341	$ 154,793
Changes in net assets in liquidation			37,129
Changes in liquidation value of properties and business units for sale			18,431
Changes in estimated cash flows during liquidation			15,083
Remeasurement of assets and liabilities			6,500
Pro Forma
Finite-Lived Intangible Assets [Line Items]
Remeasurement of assets and liabilities			1,800
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations
Finite-Lived Intangible Assets [Line Items]
Changes in net assets in liquidation			37,500
Changes in estimated cash flows during liquidation			$ 15,100