Employee Benefit Plans - Amounts Recorded in Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Aug. 26, 2023	Aug. 27, 2022
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred tax assets (liabilities)	$ (16)	$ 184
Accrued liabilities	563	537
Accumulated other comprehensive loss	46	40
SERP
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred tax assets (liabilities)	(904)	(10)
Accrued liabilities	25,119	27,562
Accumulated other comprehensive loss	$ (2,628)	$ (720)