CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	May 17, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net (loss) income	$ 250,994	$ (112,829)	$ (1,625,133)	$ (2,002,358)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depletion, depreciation and amortization	62,764	160,913	239,744	550,108
Impairment of oil and natural gas properties	0	117,813	1,357,099	2,039,770
Impairment of other property and equipment	14,568	0	0	0
Loss from equity investments	342	0	11,055	210,289
Gain on sale of equity method investments	0	0	0	(220)
Distributions from equity method investments	0	0	0	2,457
Loss (Gain) on debt extinguishment	0	3,040	(49,579)	(48,630)
Net loss (gain) on derivative instruments	137,239	556,819	(65,291)	(208,360)
Net cash (payments) receipts on settled derivative instruments	(3,361)	(322,857)	159,394	123,130
Non-cash reorganization items, net	(446,012)	0	21,956	0
Deferred income tax expense	0	0	7,290	(7,563)
Other, net	1,727	3,130	31,984	15,178
Total changes in operating assets and liabilities	153,894	(113,044)	6,785	50,192
Net cash provided by operating activities	172,155	292,985	95,304	723,993
Cash flows from investing activities:
Additions to oil and natural gas properties	(102,330)	(207,113)	(367,287)	(720,057)
Proceeds from sale of oil and natural gas properties	15	4,339	50,971	48,527
Other, net	4,484	2,669	1,729	(3,241)
Net cash used in investing activities	(97,831)	(200,105)	(314,587)	(674,771)
Cash flows from financing activities:
DIP Credit Facility Financing Fees	(7,100)	(8,783)	0	0
Repurchase of senior notes	0	0	(22,827)	(138,786)
Payments on Repurchase of Stock	0	0	0	(30,000)
Proceeds from issuance of New Preferred Stock	50,000	0	(2,988)	0
Other, net	(8)	(1,503)	(1,512)	(1,673)
Net cash (used in) provided by in financing activities	(104,768)	(149,037)	303,084	(95,459)
Net (decrease) increase in cash, cash equivalents and restricted cash	(30,444)	(56,157)	83,801	(46,237)
Cash, cash equivalents and restricted cash at beginning of period	89,861	59,417	6,060	52,297
Cash, cash equivalents and restricted cash at end of period	59,417	3,260	89,861	6,060
Revolving credit facility
Cash flows from financing activities:
Repayments of lines of credit	(318,961)	0	(383,290)	(877,000)
Proceeds from lines of credit	26,050	0	713,701	952,000
Exit Facility
Cash flows from financing activities:
Repayments of lines of credit	0	(709,028)	0	0
Proceeds from lines of credit	302,751	406,277	0	0
DIP credit facility
Cash flows from financing activities:
Repayments of lines of credit	(157,500)	0	(90,000)	0
Proceeds from lines of credit	0	0	90,000	0
New Credit Facility
Cash flows from financing activities:
Repayments of lines of credit	0	(477,000)	0	0
Proceeds from lines of credit	$ 0	$ 641,000	$ 0	$ 0