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Components of Net Periodic Benefit Cost - Employer Contributions (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Defined Benefit Plan Disclosure      
Amount of potential discretionary contributions accrued to a defined contribution plan $ 847   $ 744
Pension plan      
Defined Benefit Plan Disclosure      
Expected future benefit payment   $ 570  
Contributions by employer 357    
Pension plan | Employee Stock Option      
Defined Benefit Plan Disclosure      
Expected future benefit payment   563  
Contributions by employer 0    
Postretirement Health Coverage      
Defined Benefit Plan Disclosure      
Expected future benefit payment   $ 24  
Contributions by employer $ 80