Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Crude oil revenues	$ 128,092	$ 67,996
Natural gas liquids revenues	7,425	3,440
Natural gas revenues	15,838	9,826
Total revenues	151,355	81,262
Costs and Expenses
Lease operating	29,845	23,675
Production taxes	6,208	3,431
Ad valorem taxes	2,967	2,070
Depreciation, depletion and amortization	54,382	59,577
General and administrative, net	21,703	21,303
(Gain) loss on derivatives, net	(25,316)	(10,553)
Interest expense, net	20,571	18,713
Impairment of proved oil and gas properties	0	274,413
Other (income) expense, net	974	(93)
Total Costs and Expenses	111,334	392,536
Income (Loss) Before Income Taxes	40,021	(311,274)
Income tax expense	0	(121)
Net Income (loss)	$ 40,021	$ (311,395)
Net Income (Loss) Per Common Share
Income (loss) per share, basic (in dollars per share)	$ 0.61	$ (5.34)
Income (loss) per share, diluted (in dollars per share)	$ 0.61	$ (5.34)
Weighted Average Common Shares Outstanding
Basic (in shares)	65,188	58,360
Diluted (in shares)	65,778	58,360