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Benefit Plans
3 Months Ended
Mar. 31, 2023
Retirement Benefits [Abstract]  
Benefit Plans Benefit Plans
Table 10.1 provides the components of net periodic benefit cost for our pension, supplemental executive retirement and other postretirement benefit plans for the three months ended March 31, 2023 and 2022.
Components of net periodic benefit cost
Table
10.1
Three Months Ended March 31,
Pension and Supplemental Executive Retirement PlansOther Postretirement Benefit Plans
(In thousands)2023202220232022
Company service cost$ $1,757 $386 $348 
Interest cost3,682 2,877 398 177 
Expected return on plan assets(3,581)(4,952)(2,063)(2,625)
Amortization of:
Net actuarial losses (gains)597 1,183 (64)(754)
 Prior service cost (credit)86 (53)465 122 
Cost of settlements and curtailments7,847 —  — 
Net periodic benefit cost (benefit)$8,631 $812 $(878)$(2,732)
Effective January 1, 2023, the defined benefit pension plan and supplemental executive retirement plan are frozen (no future benefits will be accrued for participants due to employment and no new participants will be added). Participants in these plans are fully vested in their benefits.