CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 157,218	$ 137,553
Accounts receivable, net of allowance for credit losses of $2,881 and $2,875 at March 31, 2023 and December 31, 2022, respectively	493,038	565,520
Federal and state income taxes receivable	525	399
Inventory	65,275	58,038
Other current assets	64,212	67,909
Total current assets	780,268	829,419
Property and equipment, net	2,253,468	2,260,576
Right of use asset	19,897	20,841
Intangible assets, net	5,488	5,845
Deposits on equipment purchases	19,123	13,051
Other	10,531	10,881
Deferred tax assets, net	3,570	3,210
Total assets	3,092,345	3,143,823
Current liabilities:
Accounts payable	271,442	237,056
Federal and state income taxes payable	6,290	4,644
Accrued liabilities	204,047	304,143
Lease liability	5,045	5,123
Total current liabilities	486,824	550,966
Long-term lease liability	18,390	19,594
Long-term debt, net of debt discount and issuance costs of $5,204 and $5,468 at March 31, 2023 and December 31, 2022, respectively	822,196	830,937
Deferred tax liabilities, net	47,401	28,738
Other	44,577	48,065
Total liabilities	1,419,388	1,478,300
Commitments and contingencies (see Note 8)
Stockholders' equity:
Preferred stock, par value $0.01; authorized 1,000,000 shares, no shares issued	0	0
Common stock, par value $0.01; authorized 400,000,000 shares with 302,414,610 and 302,325,853 issued and 208,026,771 and 213,567,131 outstanding at March 31, 2023 and December 31, 2022, respectively	3,024	3,023
Additional paid-in capital	3,202,214	3,202,973
Retained earnings (deficit)	(4,895)	(87,394)
Accumulated other comprehensive income	0	0
Treasury stock, at cost, 94,387,839 and 88,758,722 shares at March 31, 2023 and December 31, 2022, respectively	(1,527,386)	(1,453,079)
Total stockholders' equity	1,672,957	1,665,523
Total liabilities and stockholders' equity	$ 3,092,345	$ 3,143,823