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Derivatives, Investments and Fair Value Measurements - Fair Value Inputs (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Aug. 29, 2020
Aug. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Domestic equity funds $ 626 $ 373
International equity funds 34 101
Fixed income funds 50 155
Interest rate swap contract   90
Total assets at fair value 710 719
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Domestic equity funds 626 288
International equity funds 34 45
Fixed income funds 50 54
Interest rate swap contract   0
Total assets at fair value 710 387
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Domestic equity funds 0 85
International equity funds 0 56
Fixed income funds 0 101
Interest rate swap contract   90
Total assets at fair value 0 332
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Domestic equity funds 0 0
International equity funds 0 0
Fixed income funds 0 0
Interest rate swap contract   0
Total assets at fair value $ 0 $ 0