Employee Benefit Plans - Components of Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] | ||||
Net periodic benefit cost | $ 3,574 | $ 3,261 | $ 9,056 | $ 8,587 |
Defined benefit plans | ||||
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] | ||||
Interest cost | 5,649 | 5,603 | 11,298 | 11,205 |
Expected return on plan assets, net of expenses | (5,559) | (6,018) | (11,117) | (12,036) |
Amortization of actuarial loss and prior service cost | 5 | 4 | 9 | 9 |
Total for defined benefit pension plan | 95 | (411) | 190 | (822) |
SERPs | ||||
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] | ||||
Net periodic benefit cost | 242 | 234 | 485 | 468 |
Defined contribution plan | ||||
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] | ||||
Net periodic benefit cost | $ 3,237 | $ 3,438 | $ 8,381 | $ 8,941 |