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Pension and Other Postretirement Employee Benefits | 9 Months Ended
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Sep. 30, 2022
Retirement Benefits, Description [Abstract] |
Pension and Other Postretirement Employee Benefits | NO TE 11. PENSION AND OTHER POSTRETIREMENT EMPLOYEE BENEFITS In March 2022, we transferred $75.6 million of our qualified pension plan (the Plan) assets to an insurance company for the purchase of a group annuity contract. As a result of the transaction, the insurance company assumed responsibility for annuity administration and benefit payments to select retirees and terminated vested participants, with no change to participants' pension benefits. We recorded a non-cash pretax settlement charge of $14.2 million as a result of accelerating the recognition of actuarial losses included in Accumulated Other Comprehensive Income (Loss) that would have been recognized in future periods. The settlement triggered a remeasurement of the Plan's assets and liabilities. We updated the discount rate used to measure our projected benefit obligation for the Plan as of March 31, 2022, and to calculate the related net periodic benefit cost for the remainder of 2022 to 3.95% from 3.00%. All other pension assumptions remain unchanged. The net effect of the remeasurement was a $6.2 million reduction in the funded status of the Plan, primarily driven by lower returns on Plan assets. The following table details the components of net periodic cost (benefit) of our pension plans and other postretirement employee benefits (OPEB):
|  | Three Months Ended September 30, |
|  | Pension |  |  | OPEB |
(in thousands) |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Service cost |  | $ | 1,652 |  |  | $ | 2,045 |  |  | $ | 79 |  |  | $ | 168 |
Interest cost |  |  | 2,611 |  |  |  | 2,633 |  |  |  | 228 |  |  |  | 317 |
Expected return on plan assets |  |  | (2,259 | ) |  |  | (3,525 | ) |  |  | — |  |  |  | — |
Amortization of prior service cost (credit) |  |  | 19 |  |  |  | 21 |  |  |  | 155 |  |  |  | (298 | )
Amortization of actuarial loss (gain) |  |  | 1,150 |  |  |  | 3,578 |  |  |  | (96 | ) |  |  | 545 |
Total net periodic cost |  | $ | 3,173 |  |  | $ | 4,752 |  |  | $ | 366 |  |  | $ | 732 |
|  | Nine Months Ended September 30, |
|  | Pension |  |  | OPEB |
(in thousands) |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Service cost |  | $ | 5,153 |  |  | $ | 6,135 |  |  | $ | 237 |  |  | $ | 504 |
Interest cost |  |  | 8,034 |  |  |  | 7,899 |  |  |  | 686 |  |  |  | 951 |
Expected return on plan assets |  |  | (7,662 | ) |  |  | (10,575 | ) |  |  | — |  |  |  | — |
Amortization of prior service cost (credit) |  |  | 55 |  |  |  | 63 |  |  |  | 467 |  |  |  | (894 | )
Amortization of actuarial loss (gain) |  |  | 4,252 |  |  |  | 10,877 |  |  |  | (286 | ) |  |  | 1,635 |
Net periodic cost before pension settlement charge |  |  | 9,832 |  |  |  | 14,399 |  |  |  | 1,104 |  |  |  | 2,196 |
Pension settlement charge |  |  | 14,165 |  |  |  | — |  |  |  | — |  |  |  | — |
Net periodic cost |  | $ | 23,997 |  |  | $ | 14,399 |  |  | $ | 1,104 |  |  | $ | 2,196 |
During the nine months ended September 30, 2022 and 2021, funding of pension and other postretirement employee benefit plans was $3.3 million and $7.4 million, respectively.

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