Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Crude oil, natural gas and NGLs sales	$ 320,315	$ 321,099
Commodity price risk management gain (loss), net	434,698	(190,074)
Other income	2,017	3,475
Total revenues	757,030	134,500
Costs, expenses and other:
Lease operating expenses	49,534	35,221
Production taxes	18,470	22,168
Transportation, gathering and processing expenses	13,496	11,424
Exploration, geologic and geophysical expense	136	2,643
Impairment of properties and equipment	881,074	7,875
General and administrative expense	62,165	39,598
Depreciation, depletion and amortization	176,157	151,422
Accretion of asset retirement obligations	2,620	1,584
Gain on sale of properties and equipment	(179)	(369)
Other expenses	2,144	3,554
Total cost, expenses and other	1,205,617	275,120
Income (loss) from operations	(448,587)	(140,620)
Interest expense	(24,173)	(16,968)
Income (loss) before income taxes	(472,760)	(157,588)
Income tax (expense) benefit	7,745	37,412
Net income (loss)	$ (465,015)	$ (120,176)
Earnings per share:
Basic	$ (4.94)	$ (1.82)
Diluted	$ (4.94)	$ (1.82)
Weighted-average common shares outstanding
Basic	94,077	66,182
Diluted	94,077	66,182