CONSOLIDATED CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 46,502	$ 107,240
Accounts receivable, trade, less allowance of $10,360 and $10,271, respectively	437,644	518,815
Other receivables	33,312	29,875
Inventories and supplies	16,026	14,527
Prepaid taxes, licenses and permits	8,687	17,699
Other current assets	67,164	74,459
Total current assets	609,335	762,615
Property and equipment	2,976,274	2,885,641
Less – accumulated depreciation	1,031,850	1,060,365
Property and equipment, net	1,944,424	1,825,276
Goodwill	129,104	132,717
Intangible assets, net	91,512	81,502
Other non-current assets	330,818	295,145
Total assets	3,105,193	3,097,255
Current liabilities:
Checks issued in excess of cash balances	11,530	0
Accounts payable	119,744	124,483
Current portion of long-term debt	3,750	6,250
Insurance and claims accruals	81,932	78,620
Accrued payroll	47,375	49,793
Accrued expenses	18,831	20,358
Other current liabilities	31,967	30,016
Total current liabilities	315,129	309,520
Long-term debt, net of current portion	636,250	687,500
Other long-term liabilities	55,802	59,677
Insurance and claims accruals, net of current portion	239,897	244,946
Deferred income taxes	321,897	313,278
Total liabilities	1,568,975	1,614,921
Commitments and contingencies
Temporary equity - redeemable noncontrolling interest	39,148	38,699
Stockholders’ equity:
Common stock	805	805
Paid-in capital	130,694	129,837
Retained earnings	1,923,865	1,875,873
Accumulated other comprehensive loss	(6,623)	(11,292)
Treasury stock, at cost; 17,144,040 and 17,310,533 shares, respectively	(551,671)	(551,588)
Total stockholders’ equity	1,497,070	1,443,635
Total liabilities, temporary equity and stockholders’ equity	$ 3,105,193	$ 3,097,255