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Balance Sheet Components - Change in deferred revenue (Details) - USD ($)
$ in Thousands
 6 Months Ended
Apr. 01, 2023
Apr. 02, 2022
Contract with Customer, Liability [Roll Forward]    
Deferred revenue, beginning of period $ 83,470 $ 89,498
Recognition of revenue included in beginning of period deferred revenue (16,186) (28,927)
Revenue deferred, net of revenue recognized on contracts in the respective period 14,443 16,063
Deferred revenue, end of period $ 81,727 $ 76,634