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Associate Benefit Plans (Schedule Of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 29, 2020 | Aug. 31, 2019 | Sep. 01, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Stock-based compensation | $ 16,932 | $ 16,283 | $ 14,934
Deferred income tax benefit | (4,182) | (4,006) | (4,376)
Stock-based compensation expense, net | 12,750 | 12,277 | 10,558
Stock Options [Member] |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Stock-based compensation | 3,645 | 4,786 | 4,534
Restricted Share Awards [Member] |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Stock-based compensation | 185 | 1,552 | 2,856
Restricted Stock Units [Member] |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Stock-based compensation | 12,319 | 9,633 | 7,281
Performance Share Units [Member] |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Stock-based compensation | 575 |  |
Associate Stock Purchase Plan [Member] |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Stock-based compensation | $ 208 | $ 312 | $ 263

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