CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Natural gas sales	$ 36,852	$ 33,654	$ 87,726	$ 80,411
Oil sales	13,478	27,706	39,482	124,783
Total oil and gas sales	50,330	61,360	127,208	205,194
Operating expenses:
Production taxes	1,556	2,170	4,069	8,951
Gathering and transportation	3,829	3,729	12,219	9,842
Lease operating	12,301	16,687	38,249	49,650
Exploration	76,391	5,040	84,144	70,309
Depreciation, depletion and amortization	37,545	79,445	112,410	261,907
General and administrative	4,188	5,653	15,426	20,795
Impairment of oil and gas properties	113	544,714	24,573	547,101
Loss (gain) on sales and exchange of oil and gas properties	13,196	(52)	14,103	111,778
Total operating expenses	149,119	657,386	305,193	1,080,333
Operating loss	(98,789)	(596,026)	(177,985)	(875,139)
Other income (expenses):
Net gain on extinguishment of debt	100,540	51,054	190,116	55,586
Gain from derivative financial instruments		1,078	674	1,705
Other income	175	411	770	1,054
Interest expense	(31,227)	(32,159)	(90,053)	(86,720)
Total other income (expenses)	69,488	20,384	101,507	(28,375)
Loss before income taxes	(29,301)	(575,642)	(76,478)	(903,514)
Benefit from (provision for) income taxes	825	30,646	(3,723)	144,948
Net loss	$ (28,476)	$ (544,996)	$ (80,201)	$ (758,566)
Net loss per share – basic and diluted	$ (2.32)	$ (59.05)	$ (7.13)	$ (82.27)
Weighted average shares outstanding – basic and diluted	12,293	9,230	11,255	9,220