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Pensions | 3 Months Ended
--- | ---
Mar. 31, 2024
Pensions [Abstract] |
Pensions | 11. Pensions Components of Net Periodic Pension Cost
|  | Three Months Ended March 31 |
|  | 2024 |  |  | 2023 |
Service cost |  | $ | 159 |  |  | $ | 149 |
Interest cost |  |  | 463 |  |  |  | 469 |
Expected return on plan assets |  |  | (791 | ) |  |  | (903 | )
Amortization of prior service cost |  |  | (3 | ) |  |  | (3 | )
Rate-regulated adjustment |  |  | 561 |  |  |  | 801 |
Net periodic pension expense |  | $ | 389 |  |  | $ | 513 |
Pension service cost is recorded in operating expenses. All other components of net periodic pension cost are recorded as other pension costs in other income (expenses). Employer Contributions The Company previously disclosed in its financial statements for the year ended December 31, 2023 that it expected to contribute $1,556 to its pension plans in 2024. For the three months ended March 31, 2024, contributions of $389 have been made. The Company expects to contribute the remaining $1,167 during the final three quarters of 2024.

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