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Employee Benefit Plans - Schedule of Components of Benefit Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Net periodic benefit cost $ 16,294 $ 15,616 $ 15,348
Defined benefit plans      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost 22,531 22,444 23,579
Expected return on plan assets, net of expenses (22,235) (24,072) (25,221)
Amortization of actuarial loss and prior service cost 18 18 18
Total for defined benefit plans 314 (1,610) (1,624)
SERPs      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Interest cost 681 662  
Net periodic benefit cost 970 936 974
Defined contribution plan      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Net periodic benefit cost $ 15,010 $ 16,290 $ 15,998