Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 18, 2020	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net income (loss)	$ (50,658)	$ (1,432,578)	$ 480,160	$ 56,002
Adjustments to reconcile net income (loss) to cash flows from operating activities
Noncash reorganization items, net	0	810,909	0	0
Depletion, depreciation, and amortization	45,812	188,593	151,428	150,640
Write-down of oil and natural gas properties	1,006	996,658	0	14,377
Deferred income taxes	(2,556)	(408,869)	69,481	364
Stock-based compensation	8,212	4,111	16,055	25,322
Commodity derivatives expense (income)	61,902	(102,032)	178,744	352,984
Receipt (payment) on settlements of commodity derivatives	21,089	81,396	(315,752)	(277,240)
Gain on debt extinguishment	0	(18,994)	0	0
Debt issuance costs and discounts	799	11,571	2,996	2,740
Gain from asset sales and other	(3,546)	(6,723)	(1,232)	(10,609)
Other, net	1,197	7,162	(13,198)	(2,465)
Changes in assets and liabilities, net of effects from acquisitions
Accrued production receivable	21,411	26,575	(911)	(51,944)
Trade and other receivables	15,567	(22,343)	(8,241)	(284)
Other current and long-term assets	(1,795)	743	(9,659)	10,390
Accounts payable and accrued liabilities	(67,167)	(16,102)	964	28,500
Oil and natural gas production payable	(6,912)	(6,792)	4,469	29,351
Asset retirement obligation settlements	(3,439)	(2,465)	(34,260)	(10,185)
Other liabilities	(596)	2,588	(299)	(785)
Net cash provided by operating activities	40,326	113,408	520,745	317,158
Cash flows from investing activities
Oil and natural gas capital expenditures	(17,964)	(99,582)	(317,094)	(150,911)
CCUS storage sites and related capital expenditures	0	0	(59,880)	0
Acquisitions of oil and natural gas properties	(82)	0	(976)	(10,979)
Pipeline capital expenditures	(618)	(11,601)	(23,478)	(69,223)
Net proceeds from sales of oil and natural gas properties and equipment	938	41,322	237	19,053
Equity investment	0	0	(10,218)	0
Other	15,842	12,747	(16,521)	9,128
Net cash used in investing activities	(1,884)	(57,114)	(427,930)	(202,932)
Cash flows from financing activities
Bank repayments	(190,000)	(551,000)	(1,015,000)	(933,000)
Bank borrowings	120,000	691,000	1,009,000	898,000
Common stock repurchase program	0	0	(100,028)	0
Pipeline financing and capital lease debt repayments	(22,938)	(51,792)	0	(68,008)
Interest payments treated as a reduction of debt	0	(46,417)	0	0
Cash paid in conjunction with debt repurchases	0	(14,171)	0	0
Other	1,630	(21,845)	10,749	(3,122)
Net cash provided by (used in) financing activities	(91,308)	5,775	(95,279)	(106,130)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(52,866)	62,069	(2,464)	8,096
Cash, cash equivalents, and restricted cash at beginning of period	95,114	33,045	50,344	42,248
Cash, cash equivalents, and restricted cash at end of period	$ 42,248	$ 95,114	$ 47,880	$ 50,344