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PENSION AND OTHER POSTRETIREMENT BENEFITS (Tables) | 9 Months Ended
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Sep. 30, 2025
Pension Plan |
Pension Benefits |
Schedule of Components of Net Periodic Pension Cost/(Income) and Postretirement Benefit Cost | The components of net periodic pension cost/(income) were as follows:
|  | For the Quarters Ended
|  | September 30, 2025 |  | September 30, 2024
(In thousands) |  | Qualified Plans |  | Non- Qualified Plans |  | All Plans |  | Qualified Plans |  | Non- Qualified Plans |  | All Plans
Service cost |  | $ | 1,661 |  |  | $ | — |  |  | $ | 1,661 |  |  | $ | 1,541 |  |  | $ | — |  |  | $ | 1,541 |
Interest cost |  | 13,217 |  |  | 2,076 |  |  | 15,293 |  |  | 13,376 |  |  | 2,206 |  |  | 15,582 |
Expected return on plan assets |  | (15,282) |  |  | — |  |  | (15,282) |  |  | (18,109) |  |  | — |  |  | (18,109) |
Amortization of actuarial loss |  | 4,026 |  |  | 866 |  |  | 4,892 |  |  | 2,603 |  |  | 997 |  |  | 3,600 |
Amortization of prior service credit |  | (486) |  |  | — |  |  | (486) |  |  | (486) |  |  | — |  |  | (486) |
Net periodic pension cost/(income) |  | $ | 3,136 |  |  | $ | 2,942 |  |  | $ | 6,078 |  |  | $ | (1,075) |  |  | $ | 3,203 |  |  | $ | 2,128 |
|  | For the Nine Months Ended
|  | September 30, 2025 |  | September 30, 2024
(In thousands) |  | Qualified Plans |  | Non- Qualified Plans |  | All Plans |  | Qualified Plans |  | Non- Qualified Plans |  | All Plans
Service cost |  | $ | 4,983 |  |  | $ | — |  |  | $ | 4,983 |  |  | $ | 4,623 |  |  | $ | — |  |  | $ | 4,623 |
Interest cost |  | 39,651 |  |  | 6,229 |  |  | 45,880 |  |  | 40,128 |  |  | 6,619 |  |  | 46,747 |
Expected return on plan assets |  | (45,846) |  |  | — |  |  | (45,846) |  |  | (54,327) |  |  | — |  |  | (54,327) |
Amortization of actuarial loss |  | 12,078 |  |  | 2,597 |  |  | 14,675 |  |  | 7,809 |  |  | 2,991 |  |  | 10,800 |
Amortization of prior service credit |  | (1,458) |  |  | — |  |  | (1,458) |  |  | (1,459) |  |  | — |  |  | (1,459) |
Effect of settlement |  | — |  |  | — |  |  | — |  |  | — |  |  | (27) |  |  | (27) |
Net periodic pension cost/(income) |  | $ | 9,408 |  |  | $ | 8,826 |  |  | $ | 18,234 |  |  | $ | (3,226) |  |  | $ | 9,583 |  |  | $ | 6,357 |
Other Postretirement Benefit Plan |
Pension Benefits |
Schedule of Components of Net Periodic Pension Cost/(Income) and Postretirement Benefit Cost | The components of net periodic postretirement benefit cost were as follows:
|  | For the Quarters Ended |  | For the Nine Months Ended
(In thousands) |  | September 30, 2025 |  | September 30, 2024 |  | September 30, 2025 |  | September 30, 2024
Service cost |  | $ | 4 |  |  | $ | 4 |  |  | $ | 10 |  |  | $ | 12 |
Interest cost |  | 203 |  |  | 272 |  |  | 611 |  |  | 816 |
Amortization of actuarial loss |  | — |  |  | 174 |  |  | — |  |  | 522 |
Net periodic postretirement benefit cost |  | $ | 207 |  |  | $ | 450 |  |  | $ | 621 |  |  | $ | 1,350 |

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