Annual report pursuant to Section 13 and 15(d)

Concentrations of Credit and Operation Risk (Details)

v3.19.3.a.u2
Concentrations of Credit and Operation Risk (Details) - Accounts Receivable - Customer Concentration Risk
12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Top Customer One    
Concentration Risk [Line Items]    
Concentration risk percentage 15.00% 16.00%
Top Customer Two    
Concentration Risk [Line Items]    
Concentration risk percentage 9.00% 12.00%
Top Customer Three    
Concentration Risk [Line Items]    
Concentration risk percentage 8.00% 7.00%