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Major Customers and Suppliers - Additional Information (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 27, 2020
Jun. 27, 2020
Jun. 29, 2019
Dec. 28, 2019
Revenue | Two Customers        
Concentration Risk [Line Items]        
Concentration risk percentage 37.00% 34.00%    
Revenue | One Customer        
Concentration Risk [Line Items]        
Concentration risk percentage     11.00%  
Accounts Receivable | Three Customers        
Concentration Risk [Line Items]        
Concentration risk percentage   59.00%   49.00%