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Income Taxes - Gross Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 25, 2022
Sep. 26, 2021
Reconciliation of Changes in Gross Unrecognized Tax Benefits [Roll Forward]    
Balance, beginning of year $ 18,279 $ 27,008
Changes in tax positions for prior years (307)  
Changes in tax positions for prior years   1,008
Increases (decrease) in tax positions for the current year 1,887  
Increases (decrease) in tax positions for the current year   (8,940)
Lapse in statute of limitations (1,617) (797)
Balance, end of year $ 18,242 $ 18,279