Revenue Recognition concentrations (Details)	6 Months Ended
Mar. 27, 2020	Mar. 29, 2019
Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	57.00%	67.00%

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://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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