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Balance Sheet Components - Summary of Changes in Deferred Revenue (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 27, 2025
Sep. 28, 2024
Sep. 30, 2023
Contract with Customer, Liability [Roll Forward]      
Deferred revenue, beginning of period $ 82,877 $ 80,838 $ 83,470
Recognition of revenue included in beginning of period deferred revenue (20,086) (19,111) (27,057)
Revenue deferred, net of revenue recognized on contracts in the respective period 18,433 21,150 24,425
Deferred revenue, end of period $ 81,224 $ 82,877 $ 80,838