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Basis of Presentation, and Updates to Accounting Policies (Concentrations Risk) (Details) - Sell-Through Distributors Concentration Risk
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Dec. 29, 2018
Revenue          
Concentration Risk [Line Items]          
Concentration risk percentage 85.00% 86.00% 82.00% 87.00%  
Arrow Electronics Inc. | Trade receivables          
Concentration Risk [Line Items]          
Concentration risk percentage     36.00%   41.00%
Weikeng Group | Trade receivables          
Concentration Risk [Line Items]          
Concentration risk percentage     35.00%   23.00%
Third Largest Distributor | Trade receivables          
Concentration Risk [Line Items]          
Concentration risk percentage     11.00%