Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues and other income	$ 251,159	$ 242,201
Expenses
Taxes other than income	18,963	19,686
General and administrative expenses	31,983	9,733
Interest, net of amounts capitalized of $1,083 and $9,452, respectively	1,536	19,946
Depletion, depreciation, and amortization	39,450	96,862
Commodity derivatives expense (income)	115,743	(146,771)
Gain on debt extinguishment	0	(18,994)
Write-down of oil and natural gas properties	14,377	72,541
Other expenses	2,146	2,494
Total expenses	321,043	178,801
Income (loss) before income taxes	(69,884)	63,400
Income tax benefit	(242)	(10,616)
Net income (loss)	$ (69,642)	$ 74,016
Net income (loss) per common share
Basic	$ (1.38)	$ 0.15
Diluted	$ (1.38)	$ 0.14
Weighted average common shares outstanding
Basic	50,319	494,259
Diluted	50,319	586,190
Other income
Revenues and other income	$ 360	$ 828
Transportation and marketing
Operating expenses	7,797	9,621
Oil, natural gas, and related product sales
Revenues and other income	235,445	229,624
Operating expenses	81,970	109,270
CO2
Revenues and other income	9,228	8,028
Operating expenses	993	752
Oil marketing
Revenues and other income	6,126	3,721
Operating expenses	$ 6,085	$ 3,661