Balance Sheet Components - Change in deferred revenue (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021
Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of period	$ 89,498	$ 62,388
Recognition of revenue included in beginning of period deferred revenue	(35,226)	(13,381)
Revenue deferred, net of revenue recognized on contracts in the respective period	21,549	21,379
Deferred revenue, end of period	$ 75,821	$ 70,386