Consolidated Statements of Operations - USD ($) shares in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 18, 2020	Dec. 31, 2021	Dec. 31, 2019
Revenues and other income	$ 220,600,000	$ 530,112,000	$ 1,258,160,000	$ 1,274,883,000
Expenses
Taxes other than income	16,584,000	43,531,000	91,390,000	93,752,000
General and administrative expenses	19,470,000	48,522,000	79,258,000	83,029,000
Interest, net of amounts capitalized of $4,585, $1,261, $22,885 and $36,671, respectively	1,815,000	48,267,000	4,147,000	81,632,000
Depletion, depreciation, and amortization	45,812,000	188,593,000	150,640,000	233,816,000
Commodity derivatives expense (income)	61,902,000	(102,032,000)	352,984,000	70,078,000
Gain on debt extinguishment	0	(18,994,000)	0	(155,998,000)
Write-down of oil and natural gas properties	1,006,000	996,658,000	14,377,000	0
Reorganization items, net	0	849,980,000	0	0
Other expenses	8,072,000	35,868,000	10,816,000	11,187,000
Total expenses	273,784,000	2,378,819,000	1,201,391,000	953,572,000
Income (loss) before income taxes	(53,184,000)	(1,848,707,000)	56,769,000	321,311,000
Income tax provision (benefit)	(2,526,000)	(416,129,000)	767,000	104,352,000
Net income (loss)	$ (50,658,000)	$ (1,432,578,000)	$ 56,002,000	$ 216,959,000
Net income (loss) per common share
Basic	$ (1.01)	$ (2.89)	$ 1.10	$ 0.47
Diluted	$ (1.01)	$ (2.89)	$ 1.04	$ 0.45
Weighted average common shares outstanding
Basic	50,000	495,560	50,918	459,524
Diluted	50,000	495,560	53,818	510,341
Other income
Revenues and other income	$ 4,697,000	$ 8,419,000	$ 15,288,000	$ 14,523,000
Transportation and marketing
Operating expenses	10,595,000	27,164,000	28,817,000	41,810,000
Oil, natural gas, and related product sales
Revenues and other income	201,108,000	492,101,000	1,159,955,000	1,212,020,000
Operating expenses	101,234,000	250,271,000	424,550,000	477,220,000
CO2
Revenues and other income	9,419,000	21,049,000	44,175,000	34,142,000
Operating expenses	1,976,000	2,592,000	6,678,000	2,922,000
Oil marketing
Revenues and other income	5,376,000	8,543,000	38,742,000	14,198,000
Operating expenses	$ 5,318,000	$ 8,399,000	$ 37,734,000	$ 14,124,000