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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands, shares in Millions
3 Months Ended
Nov. 28, 2020
Nov. 30, 2019
Dec. 11, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 2,354 $ 1,583  
Incentive Compensation Plan 2019      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of awards issued under the plan (in shares)     4.1