CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Mar. 30, 2024	Apr. 01, 2023
Income Statement [Abstract]
Revenue	$ 252,662	$ 304,173	$ 865,531	$ 976,752
Cost of revenue	140,624	172,555	470,815	560,078
Gross profit	112,038	131,618	394,716	416,674
Operating expenses
Research and development	80,322	80,785	159,557	157,726
Sales and marketing	61,835	63,621	145,785	142,317
General and administrative	40,841	44,438	80,639	87,553
Total operating expenses	182,998	188,844	385,981	387,596
Operating income (loss)	(70,960)	(57,226)	8,735	29,078
Other income, net
Interest income	3,933	3,181	7,008	5,149
Interest expense	(122)	(152)	(227)	(311)
Other income (expense), net	(3,303)	(2,832)	6,971	20,745
Total other income, net	508	197	13,752	25,583
Income (loss) before provision for (benefit from) income taxes	(70,452)	(57,029)	22,487	54,661
Provision for (benefit from) income taxes	(743)	(26,377)	11,249	10,124
Net income (loss)	(69,709)	(30,652)	11,238	44,537
Net income (loss) per share attributable to common stockholders:
Net income (loss) attributable to common stockholders:	$ (69,709)	$ (30,652)	$ 11,238	$ 44,537
Basic (in USD per share)	$ (0.56)	$ (0.24)	$ 0.09	$ 0.35
Diluted (in USD per share)	$ (0.56)	$ (0.24)	$ 0.09	$ 0.34
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders:
Basic (in shares)	123,749,605	127,952,875	124,465,661	127,582,560
Diluted (in shares)	123,749,605	127,952,875	128,206,823	132,834,096
Total comprehensive income (loss)
Net income (loss)	$ (69,709)	$ (30,652)	$ 11,238	$ 44,537
Change in foreign currency translation adjustment	(85)	4,542	(948)	(2,684)
Net unrealized loss on marketable securities	(26)	0	(26)	0
Comprehensive income (loss)	$ (69,820)	$ (26,110)	$ 10,264	$ 41,853