Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues:
Total operating revenues	$ 271,461	$ 225,374
Expenses:
Lease operating expenses	17,225	21,764
Facility lease expense	6,645	6,156
Production taxes	30,175	23,270
Gathering fees	19,880	23,055
Depletion, depreciation and amortization	51,653	50,540
General and administrative	7,052	12,688
Other expenses	684	213
Total operating expenses	133,314	137,686
Operating income	138,147	87,688
Other income (expense), net:
Interest expense	(33,327)	(35,837)
Loss on commodity derivatives	(64,339)	(6,530)
Deferred gain on sale of liquids gathering system		2,638
Other income (expense), net	166	(32)
Total other (expense) income, net	(97,500)	(39,761)
Income before income tax (benefit) provision	40,647	47,927
Income tax (benefit) provision	(27)	434
Net income	$ 40,674	$ 47,493
Basic earnings per share:
Net income per common share - basic	$ 0.21	$ 0.24
Fully diluted earnings per share:
Net income per common share - fully diluted	$ 0.21	$ 0.24
Weighted average common shares outstanding - basic	197,383	196,550
Weighted average common shares outstanding - fully diluted	197,801	196,550
Natural Gas Sales
Revenues:
Total operating revenues	$ 245,989	$ 181,462
Oil Sales
Revenues:
Total operating revenues	23,465	41,284
Other Revenues
Revenues:
Total operating revenues	$ 2,007	$ 2,628