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Pension and Other Post-Retirement Benefits
 6 Months Ended
Jun. 30, 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 June 30,
 Pension benefitsOther post-retirement benefits
 2024202320242023
Service cost$1,425 1,560 — — 
Interest cost2,205 2,245 15 7 
Expected return on plan assets(3,776)(3,479)— — 
Amortization of prior service cost(563)(564)— — 
Amortization of the net loss18 20 10 10 
Net periodic cost$(691)(218)25 17 

Six months ended June 30,
Pension benefitsOther post-retirement benefits
2024202320242023
Service cost$2,850 3,120 — — 
Interest cost4,410 4,490 30 14 
Expected return on plan assets(7,552)(6,958)— — 
Amortization of prior service cost(1,126)(1,128)— — 
Amortization of the net loss36 40 20 20 
Net periodic cost$(1,382)(436)50 34 

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