v3.21.2
General (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 24, 2021
USD ($)
Oct. 01, 2021
USD ($)
Jul. 02, 2021
USD ($)
Oct. 02, 2020
USD ($)
Oct. 01, 2021
USD ($)
segment
Oct. 02, 2020
USD ($)
Debt Instrument [Line Items]            
Number of operating segments | segment         2  
Research and development expense   $ 20,200   $ 16,800 $ 61,400 $ 49,400
Debt call premium on retired debt $ 24,400 (24,400)     (24,400)  
Loss on extinguishment of debt   0 $ 29,900 0 29,870 0
Pension settlement gain   $ 0 $ (11,200) $ 0 $ (11,208) $ 0
2024 Senior Notes            
Debt Instrument [Line Items]            
Notes redeemed 600,000          
Redeemed principal 100,000          
Loss on extinguishment of debt $ (29,900)