Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 43,407	$ 46,983
Trade accounts receivable, net	1,202,829	1,224,166
Prepaid expenses and other	424,323	499,834
Total current assets	1,670,559	1,770,983
Property and equipment, at cost	9,266,020	9,148,928
Less accumulated depreciation	3,506,216	3,419,129
Net property and equipment	5,759,804	5,729,799
Goodwill and intangible assets, net	225,823	230,979
Other assets	599,487	580,509
Total assets	8,255,673	8,312,270
Current liabilities:
Current portion of long-term debt	699,223	500,000
Trade accounts payable	640,728	645,925
Claims accruals	273,470	257,121
Accrued payroll	114,934	122,477
Other accrued expenses	146,020	152,517
Total current liabilities	1,874,375	1,678,040
Long-term debt	880,243	977,702
Long-term claims accruals	412,631	368,704
Other long-term liabilities	361,561	377,070
Deferred income taxes	860,190	896,249
Shareholders' equity	3,866,673	4,014,505
Total liabilities and shareholders' equity	$ 8,255,673	$ 8,312,270