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Intangible Assets - Schedule Of Estimated Future Annual Pre-Tax Amortization Expense Of Definite-Lived Intangible Assets (Detail) - USD ($)
$ in Thousands
Sep. 25, 2021
Sep. 26, 2020
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]    
Fiscal year 2022 $ 466  
Fiscal year 2023 466  
Fiscal year 2024 232  
Total $ 1,164 $ 1,540