For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Summary of Significant Accounting Policies - Percentage accounts receivable, revenue (Details)	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Customer A \| Accounts receivable
Product Information [Line Items]
Concentration percentage	39.00%	20.00%
Customer A \| Revenue
Product Information [Line Items]
Concentration percentage	0.0012%	0.0016%	0.0017%
Customer B \| Accounts receivable
Product Information [Line Items]
Concentration percentage		14.00%
Customer C \| Revenue
Product Information [Line Items]
Concentration percentage		0.001%	0.001%
Customer E \| Accounts receivable
Product Information [Line Items]
Concentration percentage		10.00%