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Employee Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2026
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 June 30,Six Months Ended June 30,
2026202520262025
Interest cost$5,331 $5,821 $10,621 $11,626 
Expected return on plan assets(5,246)(4,916)(10,445)(9,836)
Amortization of net actuarial loss 316 421 688 799 
Net periodic benefit cost$401 $1,326 $864 $2,589 
The following table details the components of the net periodic benefit cost for black lung obligations:
Three Months Ended June 30,Six Months Ended June 30,
2026202520262025
Service cost$625 $536 $1,249 $1,071 
Interest cost1,512 1,463 3,025 2,926 
Expected return on plan assets(14)(14)(28)(27)
Amortization of net actuarial loss1,911 1,076 3,822 2,152 
Net periodic benefit cost$4,034 $3,061 $8,068 $6,122