Consolidated Statements Of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Oil sales	$ 33,152	$ 14,489
Natural gas liquid sales	1,734	1,671
Natural gas sales	1,806	1,456
Total revenues	36,692	17,616
Expenses
Lease operating and gas gathering	4,584	2,956
Production and ad valorem taxes	2,166	1,037
Depreciation, depletion and amortization	15,563	12,142
Loss on sale of oil and gas properties		142
General and administrative	3,409	2,670
Other expense	1,568
Total expenses	27,290	18,947
Income (loss) from operations	9,402	(1,331)
Other (expense) income
Interest expense	(9,258)	(5,032)
Unrealized (loss) gain on warrants	(152)	2,270
(Loss) gain on derivative financial instruments	(11,156)	8,746
Loss on extinguishment of debt	(8,619)
Total other (expense) income, net	(29,185)	5,984
(Loss) income before income taxes	(19,783)	4,653
Income tax benefit (expense)	3,131	(1,587)
Net (loss) income	(16,652)	3,066
Preferred stock dividends	(1,889)
Net (loss) income attributable to common stockholders	$ (18,541)	$ 3,066
Net (loss) income per common share
Basic	$ (0.75)	$ 0.14
Diluted	$ (0.75)	$ 0.13
Weighted average common shares outstanding
Basic	24,559,132	21,822,015
Diluted	24,559,132	22,833,615