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Pension and Other Postretirement Benefits | 9 Months Ended
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Sep. 30, 2025
Retirement Benefits [Abstract] |
Pension and Other Postretirement Benefits | Pension and Other Postretirement Benefits Components of net periodic benefit cost (credit) were as follows:
|  | Pension Benefits |  | Postretirement Benefits
|  | Three months ended September 30,
(in thousands) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Components of net periodic benefit cost (credit) |  |  |  |  |  |  |  |
Service cost |  | $ | 1,162 |  |  | $ | 1,327 |  |  | $ | 80 |  |  | $ | 84 |
Interest cost |  | 2,655 |  |  | 2,645 |  |  | 137 |  |  | 129 |
Expected return on plan assets |  | (1,936) |  |  | (1,838) |  |  | — |  |  | — |
Settlements |  | 1,722 |  |  | 142 |  |  | — |  |  | — |
Amortization of net loss (gain) |  | 76 |  |  | 60 |  |  | (258) |  |  | (252) |
Amortization of prior service cost (credit) |  | 23 |  |  | 24 |  |  | (1) |  |  | (35) |
Net periodic benefit cost (credit) |  | $ | 3,702 |  |  | $ | 2,360 |  |  | $ | (42) |  |  | $ | (74) |
|  | Pension Benefits |  | Postretirement Benefits
|  | Nine months ended September 30,
(in thousands) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Components of net periodic benefit cost (credit) |  |  |  |  |  |  |  |
Service cost |  | $ | 3,719 |  |  | $ | 3,958 |  |  | $ | 241 |  |  | $ | 250 |
Interest cost |  | 8,470 |  |  | 8,033 |  |  | 412 |  |  | 389 |
Expected return on plan assets |  | (6,078) |  |  | (5,510) |  |  | — |  |  | — |
Settlements |  | 1,722 |  |  | 142 |  |  | — |  |  | — |
Amortization of net loss (gain) |  | 217 |  |  | 177 |  |  | (775) |  |  | (760) |
Amortization of prior service cost (credit) |  | 67 |  |  | 70 |  |  | (3) |  |  | (103) |
Net periodic benefit cost (credit) |  | $ | 8,117 |  |  | $ | 6,870 |  |  | $ | (125) |  |  | $ | (224) |
The non-service cost components of net periodic benefit cost (credit) are included in other expense (income), net in the unaudited condensed consolidated statements of operations.

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