Quarterly report pursuant to Section 13 or 15(d)

Major Customers and Suppliers - Additional Information (Details)

v3.20.2
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%