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Defined Benefit Pension Plans - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]        
Net periodic benefit cost, non-service cost $ (509,000) $ (964,000) $ (1,007,000) $ (1,774,000)
U.S.        
Defined Benefit Plan Disclosure [Line Items]        
Contributions by employer     0 4,500,000
U.K. Plan        
Defined Benefit Plan Disclosure [Line Items]        
Contributions by employer     $ 325,000 $ 358,000