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Pension and Post-retirement Plans - Net Periodic Expense (Details) - Pension obligations - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 1,839 $ 4,455 $ 3,929
Interest cost 3,086 2,740 2,772
Expected return on plans assets (3,223) (3,031) (4,578)
Amortization of (gain) loss (208) (407) (422)
Curtailment 0 0 (137)
Contractual termination benefits 0 0 915
Net periodic pension expense $ 1,494 $ 3,757 $ 2,479