CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Income Statement [Abstract]
Revenue	$ 645,584	$ 562,083
Cost of revenue	346,159	334,463
Gross profit	299,425	227,620
Operating expenses
Research and development	52,346	52,526
Sales and marketing	74,453	77,423
General and administrative	35,242	30,209
Total operating expenses	162,041	160,158
Operating income	137,384	67,462
Other income (expense), net
Interest income	36	998
Interest expense	(265)	(453)
Other income, net	4,257	4,424
Total other income (expense), net	4,028	4,969
Income before provision for income taxes	141,412	72,431
Provision for income taxes	9,120	1,656
Net income	132,292	70,775
Net income attributable to common stockholders:
Basic	132,292	70,775
Diluted	$ 132,292	$ 70,775
Basic (in USD per share)	$ 1.14	$ 0.65
Diluted (in USD per share)	$ 1.01	$ 0.60
Weighted-average shares used in computing net loss per share attributable to common stockholders:
Basic (in shares)	115,610,523	108,984,683
Diluted (in shares)	130,644,147	118,415,968
Total comprehensive income
Net income	$ 132,292	$ 70,775
Change in foreign currency translation adjustment	847	(519)
Comprehensive income	$ 133,139	$ 70,256