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Environmental Liabilities - Analysis of Activity (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 25, 2021
Dec. 31, 2020
Accrual for Environmental Loss Contingencies [Roll Forward]    
Balance, December 31, 2020 $ 171,679  
Increase in liabilities 2,972  
Payments (4,456)  
Foreign currency adjustments 37  
Balance, September 25, 2021 170,232  
Less: Current portion (8,685) $ (8,684)
Long-term environmental liabilities $ 161,547 $ 162,995