CONSOLIDATED CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 60,337	$ 61,723
Accounts receivable, trade, less allowance of $9,101 and $9,337, respectively	417,463	444,944
Other receivables	25,031	25,479
Inventories and supplies	17,173	18,077
Prepaid taxes, licenses and permits	12,803	16,505
Other current assets	64,509	67,900
Total current assets	597,316	634,628
Property and equipment, at cost	2,914,041	2,951,654
Less – accumulated depreciation	982,759	978,698
Property and equipment, net	1,931,282	1,972,956
Goodwill	129,104	129,104
Intangible assets, net	83,959	86,477
Other non-current assets	337,169	334,771
Total assets	3,078,830	3,157,936
Current liabilities:
Accounts payable	136,242	135,990
Current portion of long-term debt	1,250	2,500
Insurance and claims accruals	81,537	81,794
Accrued payroll	48,318	50,549
Accrued expenses	22,202	30,282
Other current liabilities	24,503	29,470
Total current liabilities	314,052	330,585
Long-term debt, net of current portion	596,250	646,250
Other long-term liabilities	53,371	54,275
Insurance and claims accruals, net of current portion	235,685	239,700
Deferred income taxes	322,925	320,180
Total liabilities	1,522,283	1,590,990
Commitments and contingencies
Temporary equity - redeemable noncontrolling interest	38,543	38,607
Stockholders’ equity:
Common stock, $0.01 par value, 200,000,000 shares authorized; 80,533,536 shares issued; 63,412,833 and 63,444,681 shares outstanding, respectively	805	805
Paid-in capital	132,722	134,894
Retained earnings	1,950,819	1,953,385
Accumulated other comprehensive loss	(9,066)	(9,684)
Treasury stock, at cost; 17,120,703 and 17,088,855 shares, respectively	(557,276)	(551,061)
Total stockholders’ equity	1,518,004	1,528,339
Total liabilities, temporary equity and stockholders’ equity	$ 3,078,830	$ 3,157,936