Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current Assets:
Cash and cash equivalents	$ 18,837	$ 19,473
Accounts receivable, net	347,196	322,991
Prepaid expenses	45,800	35,497
Income tax receivable	24,819	44,107
Other current assets	14,498	13,701
Total current assets	451,150	435,769
Property and Equipment, at cost	4,133,481	3,790,069
Less: accumulated depreciation and amortization	1,321,880	1,233,134
Net property and equipment	2,811,601	2,556,935
Operating Lease Right-of-Use Assets	145,336	126,828
Goodwill and Identifiable Intangibles, net	16,016	16,442
Other Noncurrent Assets	33,623	30,883
Total assets	3,457,726	3,166,857
Current Liabilities:
Accounts payable	128,993	114,560
Wages, vacation and employees’ benefits	61,909	49,953
Claims and insurance accruals	47,111	43,126
Other current liabilities	33,859	38,036
Current portion of long-term debt	1,967	5,313
Current portion of operating lease liability	28,970	27,372
Total current liabilities	302,809	278,360
Other Liabilities:
Long-term debt, less current portion	307,124	194,981
Operating lease liability, less current portion	106,282	96,798
Deferred income taxes	236,536	219,062
Claims, insurance and other	68,453	66,385
Total other liabilities	718,395	577,226
Commitments and Contingencies (Note 3)
Stockholders’ Equity:
Preferred stock, $0.001 par value, 50,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.001 par value, 100,000,000 shares authorized, 26,636,046 and 26,598,512 shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively	27	27
Additional paid-in-capital	300,593	295,106
Deferred compensation trust, 73,584 and 70,100 shares of common stock at cost at June 30, 2025 and December 31, 2024, respectively	(9,418)	(7,981)
Retained earnings	2,145,320	2,024,119
Total stockholders’ equity	2,436,522	2,311,271
Total liabilities and stockholders’ equity	$ 3,457,726	$ 3,166,857