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Benefit Plans - Schedule of Net Benefit Costs (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Pension Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 1,665 $ 1,892
Interest cost 3,613 3,558
Expected return on assets (4,463) (4,069)
Amortization of actuarial loss (gain) (18) 554
Amortization of prior service cost 4 4
Total 801 1,939
Other Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 166 160
Interest cost 295 317
Expected return on assets (267) (217)
Amortization of actuarial loss (gain) (160) (88)
Amortization of prior service cost 0 0
Total $ 34 $ 172