CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Total oil and gas sales	$ 511,176	$ 178,011	$ 1,195,354	$ 583,424
Operating expenses:
Production and ad valorem taxes	16,675	9,798	36,468	27,768
Gathering and transportation	35,402	22,422	96,596	77,423
Lease operating	26,576	25,412	77,150	79,110
Depreciation, depletion and amortization	128,739	99,056	359,313	312,828
General and administrative	8,052	8,974	23,952	25,991
Exploration	0	0	0	27
Gain on sale of assets	(14)	(16)	(93)	(16)
Total operating expenses	215,430	165,646	593,386	523,131
Operating income	295,746	12,365	601,968	60,293
Other income (expenses):
Loss from derivative financial instruments	(510,319)	(121,579)	(756,026)	(71,978)
Other expense	197	489	1,008	793
Interest expense	(49,954)	(63,890)	(170,645)	(168,764)
Loss on early retirement of debt	0	0	(352,599)	(861)
Total other expenses	(560,076)	(184,980)	(1,278,262)	(240,810)
Loss before income taxes	(264,330)	(172,615)	(676,294)	(180,517)
Benefit from (provision for) income taxes	(23,976)	46,123	74,168	46,177
Net loss	(288,306)	(126,492)	(602,126)	(134,340)
Preferred stock dividends and accretion	(4,411)	(4,398)	(13,089)	(26,596)
Net loss available to common stockholders	$ (292,717)	$ (130,890)	$ (615,215)	$ (160,936)
Net loss per share:
Basic (in dollars per share)	$ (1.26)	$ (0.57)	$ (2.66)	$ (0.77)
Diluted (in dollars per share)	$ (1.26)	$ (0.57)	$ (2.66)	$ (0.77)
Weighted average shares outstanding:
Basic (in shares)	231,747	231,223	231,519	209,760
Diluted (in shares)	231,747	231,223	231,519	209,760
Natural gas sales
Revenues:
Total oil and gas sales	$ 488,303	$ 168,374	$ 1,133,783	$ 547,975
Oil sales
Revenues:
Total oil and gas sales	$ 22,873	$ 9,637	$ 61,571	$ 35,449