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Pension and Other Post-Retirement Benefits
3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Pension and Other Post-Retirement Benefits Pension and Other Post-Retirement Benefits
 
The following table sets forth the net periodic costs for the defined benefit pension plans and post-retirement healthcare plans for the periods indicated (in thousands):
 Quarter ended March 31,
 Pension benefitsOther post-retirement benefits
 2024202320242023
Service cost$1,425 1,560 — — 
Interest cost2,205 2,245 15 
Expected return on plan assets(3,776)(3,479)— — 
Amortization of prior service cost(563)(564)— — 
Amortization of the net loss18 20 10 10 
Net periodic cost$(691)(218)25 17 

Because of the current funding status, we do not anticipate a funding requirement during the year ending December 31, 2024.