Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Crude oil and natural gas sales	$ 1,113,852	$ 633,850
Gain on natural gas derivatives, net	10,174	46,858
Crude oil and natural gas service operations	17,002	4,719
Total revenues	1,141,028	685,427
Operating costs and expenses:
Production expenses	92,962	72,854
Production taxes	80,580	41,234
Transportation expenses	49,297	0
Exploration expenses	1,720	4,998
Crude oil and natural gas service operations	4,583	2,837
Depreciation, depletion, amortization and accretion	454,378	382,156
Property impairments	33,784	51,372
General and administrative expenses	43,043	47,220
Net (gain) loss on sale of assets and other	(41)	5,535
Total operating costs and expenses	760,306	608,206
Income from operations	380,722	77,221
Other income (expense):
Interest expense	(75,894)	(71,172)
Other	654	442
Total other income (expense)	(75,240)	(70,730)
Income before income taxes	305,482	6,491
Provision for income taxes	(71,536)	(6,022)
Net income	233,946	469
Foreign currency translation adjustments	2	138
Total other comprehensive income, net of tax	2	138
Comprehensive income	$ 233,948	$ 607
Basic net income per share (in dollars per share)	$ 0.63	$ 0.00
Diluted net income per share (in dollars per share)	$ 0.63	$ 0.00