CONSOLIDATED STATEMENTS OF OPERATIONS (in thousands, except per share data) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating revenues and other income:
Oil, gas, and NGL production revenue	$ 2,597,915	$ 1,126,188	$ 1,585,750
Other operating income	24,979	485	4,355
Total operating revenues and other income	2,622,894	1,126,673	1,590,105
Operating expenses:
Oil, gas, and NGL production expense	505,416	391,217	500,709
Depletion, depreciation, amortization, and asset retirement obligation liability accretion	774,386	784,987	823,798
Exploration	39,296	40,997	51,500
Impairment	35,000	1,016,013	33,842
General and administrative	111,945	99,160	132,797
Net derivative (gain) loss	901,659	(161,576)	97,539
Other operating expense, net	46,069	24,825	19,888
Total operating expenses	2,413,771	2,195,623	1,660,073
Income (loss) from operations	209,123	(1,068,950)	(69,968)
Interest expense	(160,353)	(163,892)	(159,102)
Net gain (loss) on extinguishment of debt	(2,139)	280,081	0
Other non-operating expense, net	(464)	(3,944)	(1,974)
Income (loss) before income taxes	46,167	(956,705)	(231,044)
Income tax (expense) benefit	(9,938)	192,091	44,043
Net income (loss)	$ 36,229	$ (764,614)	$ (187,001)
Basic weighted-average common shares outstanding	119,043	113,730	112,544
Diluted weighted-average common shares outstanding	123,690	113,730	112,544
Basic net income (loss) per common share	$ 0.30	$ (6.72)	$ (1.66)
Diluted net income (loss) per common share	$ 0.29	$ (6.72)	$ (1.66)