Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues and other income	$ 482,156,000	$ 301,368,000	$ 894,015,000	$ 552,527,000
Expenses
Taxes other than income	36,317,000	22,382,000	67,698,000	41,345,000
General and administrative expenses	19,235,000	15,450,000	37,927,000	47,433,000
Interest, net of amounts capitalized of $975, $1,168, $2,133 and $2,251, respectively	1,526,000	1,252,000	2,183,000	2,788,000
Depletion, depreciation, and amortization	35,400,000	36,381,000	70,745,000	75,831,000
Commodity derivatives expense	56,854,000	172,664,000	249,573,000	288,407,000
Write-down of oil and natural gas properties	0	0	0	14,377,000
Other expenses	6,621,000	3,214,000	8,733,000	5,360,000
Total expenses	301,814,000	379,359,000	721,050,000	700,402,000
Income (loss) before income taxes	180,342,000	(77,991,000)	172,965,000	(147,875,000)
Income tax provision (benefit)	24,848,000	(296,000)	18,343,000	(538,000)
Net income (loss)	$ 155,494,000	$ (77,695,000)	$ 154,622,000	$ (147,337,000)
Net income (loss) per common share
Basic	$ 3.00	$ (1.52)	$ 2.99	$ (2.91)
Diluted	$ 2.83	$ (1.52)	$ 2.81	$ (2.91)
Weighted average common shares outstanding
Basic	51,757	50,999	51,680	50,661
Diluted	54,886	50,999	54,931	50,661
Other income
Revenues and other income	$ 790,000	$ 707,000	$ 1,040,000	$ 1,067,000
Transportation and marketing
Operating expenses	4,802,000	8,522,000	9,447,000	16,319,000
Oil, natural gas, and related product sales
Revenues and other income	451,970,000	282,708,000	836,881,000	518,153,000
Operating expenses	124,351,000	110,225,000	242,179,000	192,195,000
CO2
Revenues and other income	12,610,000	10,134,000	26,032,000	19,362,000
Operating expenses	1,681,000	1,531,000	4,498,000	2,524,000
Oil marketing
Revenues and other income	16,786,000	7,819,000	30,062,000	13,945,000
Operating expenses	$ 15,027,000	$ 7,738,000	$ 28,067,000	$ 13,823,000