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
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Major Customers and Suppliers - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 28, 2019
Revenue \| One Customers
Concentration Risk [Line Items]
Concentration risk percentage	30.00%	16.00%		11.00%
Revenue \| Two Customers
Concentration Risk [Line Items]
Concentration risk percentage			32.00%
Accounts Receivable \| Two Customers
Concentration Risk [Line Items]
Concentration risk percentage			38.00%
Accounts Receivable \| Three Customers
Concentration Risk [Line Items]
Concentration risk percentage					49.00%