Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 46,983	$ 53,344
Trade accounts receivable, net	1,224,166	1,334,912
Other receivables	257,774	231,248
Inventories	41,662	42,186
Prepaid expenses and other current assets	200,398	299,502
Total current assets	1,770,983	1,961,192
Property and equipment, at cost:
Revenue and service equipment	7,541,314	7,293,093
Land	269,222	258,144
Structures and improvements	533,425	462,536
Software, office equipment and furniture	804,967	754,099
Total property and equipment	9,148,928	8,767,872
Less accumulated depreciation	3,419,129	2,993,959
Net property and equipment	5,729,799	5,773,913
Goodwill	134,057	134,057
Other intangible assets, net	96,922	133,896
Other assets	580,509	585,090
Total assets	8,312,270	8,588,148
Current liabilities:
Current portion of long-term debt	500,000	249,961
Trade accounts payable	645,925	737,364
Claims accruals	257,121	220,357
Accrued payroll and payroll taxes	122,477	94,563
Other accrued expenses	152,517	150,255
Total current liabilities	1,678,040	1,452,500
Long-term debt	977,702	1,326,107
Long-term claims accruals	368,704	326,920
Other long-term liabilities	377,070	392,766
Deferred income taxes	896,249	986,097
Total liabilities	4,297,765	4,484,390
Commitments and Contingencies
Shareholders’ equity:
Preferred stock, $100 par value. 10 million shares authorized; none outstanding	0	0
Common stock, $.01 par value. 1 billion shares authorized; (167,099,432 shares issued at December 31, 2024 and 2023, of which 100,555,126 and 103,220,027 shares were outstanding at December 31, 2024 and 2023, respectively)	1,671	1,671
Additional paid-in capital	583,945	549,132
Retained earnings	7,373,462	6,978,119
Treasury stock, at cost (66,544,306 shares at December 31, 2024, and 63,879,405 shares at December 31, 2023)	(3,944,573)	(3,425,164)
Total shareholders’ equity	4,014,505	4,103,758
Total liabilities and shareholders' equity	$ 8,312,270	$ 8,588,148