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Goodwill and Other Intangible Assets, Net (Amortization Expense by categories) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2018
Dec. 29, 2017
Dec. 30, 2016
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets $ 41,460 $ 43,106 $ 35,470
Cost of Sales [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets 14,134 15,183 15,368
Selling, General and Administrative Expenses [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets 26,658 24,840 19,590
Research and Development Expense [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets 154 545 512
Other Operating Expense [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets $ 514 $ 2,538 $ 0