Annual report pursuant to Section 13 and 15(d)

Concentration of Credit Risk and Significant Customers and Suppliers (Details)

v3.20.2
Concentration of Credit Risk and Significant Customers and Suppliers (Details) - supplier
12 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 29, 2018
Concentration Risk [Line Items]      
Percentage of net sales 52.00% 49.00% 48.00%
Percentage of accounts receivable 53.00% 46.00%  
Percentage of accounts receivable including Company's largest customer 13.00% 11.00%  
Percentage of cost of goods sold 7.00% 6.00% 8.00%
Number of suppliers 5    
Sales Revenue, Net | Customer Concentration Risk | Customer One      
Concentration Risk [Line Items]      
Percentage of largest customer accounted of the Company's net sales 17.00% 16.00% 16.00%
Sales Revenue, Net | Customer Concentration Risk | Customer Two      
Concentration Risk [Line Items]      
Percentage of largest customer accounted of the Company's net sales 13.00% 12.00% 11.00%
Sales Revenue, Net | Customer Concentration Risk | Customer Three      
Concentration Risk [Line Items]      
Percentage of largest customer accounted of the Company's net sales 10.00% 9.00% 8.00%