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Defined Pension Plans - Schedule of Net Periodic Pension Costs (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost on projected benefit obligation       $ 4,314
Expected return on plan assets       (3,735)
Net amortization       154
Net periodic pension (benefit) cost $ 195 $ 100   733
Pension Plan | Forecast        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost on projected benefit obligation     $ 4,291  
Expected return on plan assets     (3,512)  
Net amortization     0  
Net periodic pension (benefit) cost     779  
Supplemental Employee Retirement Plan        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost on projected benefit obligation       472
Net periodic pension (benefit) cost $ 113 $ 118   $ 472
Supplemental Employee Retirement Plan | Forecast        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost on projected benefit obligation     451  
Net periodic pension (benefit) cost     $ 451