Lease Obligations - Future Minimum Lease Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finance Leases
2024	$ 156,500
2025	119,400
2026	61,600
2027	21,400
2028	3,000
Thereafter	100
Total minimum lease payments	362,000
Less amounts representing interest	(20,200)
Total lease obligations, net of interest	341,800
Less current portion	144,200
Long-term portion of lease obligations, net of interest	$ 197,600
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current portion of long-term debt, including finance leases
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt, including finance leases
Operating Leases
2024	$ 152,200
2025	126,200
2026	90,400
2027	46,600
2028	20,500
Thereafter	36,700
Total minimum lease payments	472,600
Less amounts representing interest	(41,900)
Total lease obligations, net of interest	430,700
Less current portion	137,765	$ 96,516
Long-term portion of lease obligations, net of interest	$ 292,873	$ 194,050