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Business Segment, Geographic and Concentration Risk Information Business Segment, Geographic and Concentration Risk Information (Schedule of Revenue By Major Customers By Reporting Segments) (Details) - customer
3 Months Ended 6 Months Ended
Jul. 01, 2016
Jul. 03, 2015
Jul. 01, 2016
Jul. 03, 2015
Revenue, Major Customer [Line Items]        
Revenue Major Customer Percent 45.00% 50.00% 46.00% 52.00%
Customer A [Member]        
Revenue, Major Customer [Line Items]        
Revenue Major Customer Percent 17.00% 20.00% 18.00% 21.00%
Customer B [Member]        
Revenue, Major Customer [Line Items]        
Revenue Major Customer Percent 15.00% 18.00% 15.00% 18.00%
Customer C [Member]        
Revenue, Major Customer [Line Items]        
Revenue Major Customer Percent 13.00% 12.00% 13.00% 13.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]        
Revenue, Major Customer [Line Items]        
Concentration risk, number of customers     3