Lease Accounting (Maturity of Lease Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Operating Leased Assets [Line Items]
2024	$ 47,653
2025	41,722
2026	34,350
2027	31,123
2028	27,266
Thereafter	243,004
Total Lease Payments	425,118
Less: Interest	(180,303)
Present value of operating lease liabilities	244,815	$ 131,822
Transportation equipment
Operating Leased Assets [Line Items]
2024	30,039
2025	23,649
2026	16,550
2027	13,545
2028	10,023
Thereafter	82,215
Total Lease Payments	176,021
Less: Interest	(64,394)
Present value of operating lease liabilities	111,627
Office Space and Equipment
Operating Leased Assets [Line Items]
2024	2,355
2025	2,778
2026	2,453
2027	2,186
2028	1,805
Thereafter	9,585
Total Lease Payments	21,162
Less: Interest	(6,081)
Present value of operating lease liabilities	15,081
Facilities and Equipment
Operating Leased Assets [Line Items]
2024	15,259
2025	15,295
2026	15,347
2027	15,392
2028	15,438
Thereafter	151,204
Total Lease Payments	227,935
Less: Interest	(109,828)
Present value of operating lease liabilities	$ 118,107

Amount of lessee's undiscounted obligation for lease payment for operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

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Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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