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Income Taxes - Activity Related to Company's Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2023
Sep. 24, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Beginning Balance $ 382 $ 342
Increases related to prior year tax positions 222 22
Increases related to current year tax positions 100 110
Decreases related to prior year tax positions (10) 0
Settlements (222) 0
Decreases related to lapse of statute of limitations (81) (92)
Ending Balance $ 391 $ 382