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Employee Benefit Plans - Amounts Recorded in Consolidated Balance Sheet (Details) - USD ($) $ in Thousands | Aug. 28, 2021 | Aug. 29, 2020
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Pension Plans |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Deferred tax assets | $ 213 | $ 279
Accrued liabilities | 1,240 | 1,322
Accumulated other comprehensive loss | (1,044) | (819)
SERP |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Deferred tax assets | 2,218 | 3,144
Accrued liabilities | 36,644 | 38,616
Accumulated other comprehensive loss | $ (6,449) | $ (9,234)

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