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Share Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Employee stock purchase program discount percentage 15.00%   15.00%  
Share-based compensation plan modifications     no  
Share-based Payment Arrangement, Noncash Expense $ 7,500 $ 8,800 $ 14,449 $ 18,400
Employee Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options granted     417,025  
Weighted average exercise price     $ 91.21  
Weighted average fair value per option     $ 18.57  
Total unrecognized compensation expense 11,200   $ 11,200  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     2 years 2 months 12 days  
Restricted Stock Units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock units granted     305,029  
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock units granted     80,057  
Restricted Stock Units and Performance-Based Restricted Share Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average fair value per share     $ 91.98  
Total unrecognized compensation expense $ 45,100   $ 45,100  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     2 years 2 months 12 days