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Goodwill and Other Intangible Assets, Net (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 03, 2020
Apr. 04, 2020
Oct. 02, 2020
Sep. 27, 2019
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]          
Payments to acquire intangible assets     $ 4,607 $ 0  
Gross carrying amount     975,167   $ 958,619
Purchased technology and patents          
Finite-Lived Intangible Assets [Line Items]          
Gross carrying amount     255,475   $ 248,264
Purchased technology and patents | Non-Medical          
Finite-Lived Intangible Assets [Line Items]          
Payments to acquire intangible assets $ 500 $ 3,500      
Asset acquisition contingent consideration     500    
Finite-lived intangible asset, acquisition costs capitalized     100    
Gross carrying amount     $ 4,600    
Intangible asset acquired, remaining amortization period     11 years