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Employee Benefit Plans (Tables)
3 Months Ended
Mar. 31, 2024
Compensation Related Costs [Abstract]  
Schedule of Net Periodic Benefit Cost
The following table details the components of the net periodic benefit cost for pension obligations:
Three Months Ended March 31,
20242023
Interest cost$5,749 $5,958 
Expected return on plan assets(5,742)(5,484)
Amortization of net actuarial loss 298 137 
Net periodic benefit cost$305 $611 
The following table details the components of the net periodic benefit cost for black lung obligations:
Three Months Ended March 31,
20242023
Service cost$601 $513 
Interest cost1,307 1,165 
Expected return on plan assets(13)(13)
Amortization of net actuarial loss (gain)721 (708)
Net periodic benefit cost$2,616 $957