Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
REVENUES
Natural gas, oil and natural gas liquids sales	$ 86,194,000	$ 45,901,000	$ 185,625,000	$ 86,389,000
Brokered natural gas and marketing revenue	(3,000)	1,165,000	2,428,000	10,283,000
Total revenues	86,191,000	47,066,000	188,053,000	96,672,000
OPERATING EXPENSES
Lease operating	4,568,000	2,248,000	6,911,000	4,925,000
Transportation, gathering and compression	28,969,000	28,254,000	61,846,000	51,391,000
Production and ad valorem taxes	2,033,000	2,203,000	3,964,000	4,766,000
Brokered natural gas and marketing expense	6,000	2,160,000	2,466,000	11,562,000
Depreciation, depletion and amortization	25,152,000	20,949,000	51,341,000	36,062,000
Exploration	8,997,000	17,444,000	20,577,000	33,100,000
General and administrative	10,730,000	10,402,000	20,862,000	21,676,000
Rig termination and standby		1,292,000		3,955,000
Impairment of proved oil and gas properties				17,665,000
Accretion of asset retirement obligations	128,000	89,000	252,000	175,000
(Gain) loss on sale of assets	6,000	(1,024,000)	1,000	(1,046,000)
Total operating expenses	80,589,000	84,017,000	168,220,000	184,231,000
OPERATING INCOME (LOSS)	5,602,000	(36,951,000)	19,833,000	(87,559,000)
OTHER INCOME (EXPENSE)
Gain (loss) on derivative instruments	18,177,000	(29,596,000)	43,274,000	(19,046,000)
Interest expense, net	(12,285,000)	(12,439,000)	(24,747,000)	(25,900,000)
Gain (loss) on early extinguishment of debt		5,825,000		14,489,000
Other income (expense)		(2,000)	(19,000)	(141,000)
Total other expense, net	5,892,000	(36,212,000)	18,508,000	(30,598,000)
INCOME (LOSS) BEFORE INCOME TAXES	11,494,000	(73,163,000)	38,341,000	(118,157,000)
INCOME TAX BENEFIT (EXPENSE)			0	(540,000)
NET INCOME (LOSS)	$ 11,494,000	$ (73,163,000)	$ 38,341,000	$ (118,697,000)
NET INCOME (LOSS) PER COMMON SHARE
Basic	$ 0.04	$ (0.33)	$ 0.15	$ (0.53)
Diluted	$ 0.04	$ (0.33)	$ 0.15	$ (0.53)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic	262,423	223,013	261,768	222,898
Diluted	264,420	223,013	264,321	222,898