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Income Taxes - Changes in Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 27, 2022
Aug. 28, 2021
Aug. 29, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at beginning of year $ 5,537 $ 5,830 $ 2,822
Gross increases-tax positions in a prior year 0 0 2,486
Gross decreases-tax positions in a prior year (1,156) (872) 0
Gross increases-current year tax positions 610 579 522
Balance at end of year 4,991 5,537 5,830
Accrued interest and penalties 753 946 681
Total unrecognized tax benefits $ 5,744 $ 6,483 $ 6,511