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Restructuring (Details) - USD ($)
12 Months Ended
Aug. 28, 2021
Aug. 29, 2020
Aug. 31, 2019
Restructuring Cost and Reserve [Line Items]      
Proceeds from the sale of property, plant, and equipment $ 12,452,000 $ 0 $ 148,000
Expected restructuring cost 0    
Facility Relocation      
Restructuring Cost and Reserve [Line Items]      
Proceeds from the sale of property, plant, and equipment 12,423,000    
Gain on sale $ 4,753,000