CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
OPERATING REVENUES
Operating revenues	$ 411,788	$ 288,374	$ 884,706	$ 658,769
(Loss) gain on derivative instruments	(87,121)	43,974	(100,358)	60,036
TOTAL OPERATING REVENUES	324,667	332,348	784,348	718,805
OPERATING EXPENSES
Direct operations	16,154	17,423	33,030	34,667
Transportation and gathering	133,488	135,249	270,190	278,581
Taxes other than income	4,183	3,352	8,988	7,090
Exploration	2,368	4,579	4,995	6,769
Depreciation, depletion and amortization	91,549	94,622	185,697	194,757
General and administrative	23,037	23,166	52,193	56,595
TOTAL OPERATING EXPENSES	270,779	278,391	555,093	578,459
Loss on equity method investments	0	0	0	(59)
Gain (loss) on sale of assets	20	(241)	91	(170)
INCOME FROM OPERATIONS	53,908	53,716	229,346	140,117
Interest expense, net	12,558	14,543	24,935	28,754
Other expense	46	48	92	114
Income before income taxes	41,304	39,125	204,319	111,249
Income tax expense	10,840	8,751	47,501	26,965
NET INCOME	$ 30,464	$ 30,374	$ 156,818	$ 84,284
Earnings per share
Basic (in dollars per share)	$ 0.08	$ 0.08	$ 0.39	$ 0.21
Diluted (in dollars per share)	$ 0.08	$ 0.08	$ 0.39	$ 0.21
Weighted-average common shares outstanding
Basic (in shares)	399,586	398,576	399,355	398,460
Diluted (in shares)	402,206	401,279	401,740	400,219
Natural gas
OPERATING REVENUES
Operating revenues	$ 411,718	$ 288,286	$ 884,577	$ 658,626
Other
OPERATING REVENUES
Operating revenues	$ 70	$ 88	$ 129	$ 143