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Stock-Based Compensation (Schedule Of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Nov. 28, 2020 | Nov. 30, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | $ 4,238 | $ 4,161
Deferred income tax benefit | (1,030) | (1,040)
Stock-based compensation expense, net | 3,208 | 3,121
Stock Options [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | 677 | 975
Restricted Share Awards [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation |  | 205
Restricted Stock Units [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | 3,299 | 2,876
Performance Share Units [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | 213 | 46
Associate Stock Purchase Plan [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | $ 49 | $ 59

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