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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. 30, 2019 | Dec. 01, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | $ 4,161 | $ 4,174
Deferred income tax benefit | (1,040) | (1,048)
Stock-based compensation expense, net | 3,121 | 3,126
Stock Options [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | 975 | 1,205
Restricted Share Awards [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | 205 | 532
Restricted Stock Units [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | 2,876 | 2,365
Performance Share Units [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | 46 |
Associate Stock Purchase Plan [Member] |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Stock-based compensation | $ 59 | $ 72

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