CONSOLIDATED CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 129,591	$ 107,240
Accounts receivable, trade, less allowance of $10,240 and $10,271, respectively	460,999	518,815
Other receivables	29,400	29,875
Inventories and supplies	14,926	14,527
Prepaid taxes, licenses and permits	13,956	17,699
Other current assets	60,904	74,459
Total current assets	709,776	762,615
Property and equipment	2,875,063	2,885,641
Less – accumulated depreciation	1,020,469	1,060,365
Property and equipment, net	1,854,594	1,825,276
Goodwill	129,104	132,717
Intangible assets, net	94,030	81,502
Other non-current assets	328,812	295,145
Total assets	3,116,316	3,097,255
Current liabilities:
Accounts payable	128,955	124,483
Current portion of long-term debt	5,000	6,250
Insurance and claims accruals	80,738	78,620
Accrued payroll	43,541	49,793
Accrued expenses	20,057	20,358
Other current liabilities	25,038	30,016
Total current liabilities	303,329	309,520
Long-term debt, net of current portion	686,250	687,500
Other long-term liabilities	58,567	59,677
Insurance and claims accruals, net of current portion	245,900	244,946
Deferred income taxes	312,724	313,278
Total liabilities	1,606,770	1,614,921
Commitments and contingencies
Temporary equity - redeemable noncontrolling interest	39,009	38,699
Stockholders’ equity:
Common stock	805	805
Paid-in capital	128,050	129,837
Retained earnings	1,902,858	1,875,873
Accumulated other comprehensive loss	(9,264)	(11,292)
Treasury stock, at cost; 17,156,602 and 17,310,533 shares, respectively	(551,912)	(551,588)
Total stockholders’ equity	1,470,537	1,443,635
Total liabilities, temporary equity and stockholders’ equity	$ 3,116,316	$ 3,097,255