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Accumulated Other Comprehensive Income (Loss) - Reclassification from AOCI (Details) - USD ($)
$ in Thousands
3 Months Ended
Nov. 30, 2019
Nov. 24, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Amortization of net actuarial loss $ 8 $ 8
Reclassification out of Accumulated Other Comprehensive Income | Selling, general, and administrative expenses | Amortization of net actuarial loss    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Amortization of net actuarial loss $ 8 $ 8