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Defined Pension Plans - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Pension Plan          
Defined Benefit Plan Disclosure [Line Items]          
Net periodic cost (benefit) $ 129 $ 616 $ (402) $ (1,800) $ (2,564)
Contributions     0    
Supplemental Employee Retirement Plan          
Defined Benefit Plan Disclosure [Line Items]          
Net periodic cost (benefit) $ 118 $ 107 $ 354 $ 320 $ 426