Balance Sheet Components - Accounts receivable, net of allowances (Details) - USD ($) $ in Thousands	Jan. 02, 2021	Oct. 03, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts receivable	$ 164,912	$ 73,757
Allowance for credit losses	(1,538)	(1,307)
Allowance for sales incentives	(49,758)	(17,515)
Accounts receivable, net of allowances	$ 113,616	$ 54,935

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant