Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating revenues
Oil and gas sales	$ 194,555	$ 378,401	$ 258,063
Other revenues	2,844	2,196	1,106
Total operating revenues	197,399	380,597	259,169
Operating costs and expenses
Lease operating	41,027	37,760	25,129
Production taxes	12,130	22,556	15,517
Exploration	6,551	3,453	16,125
Depletion, depreciation and amortization	205,498	181,669	114,136
Accretion of ARO liability	1,087	770	608
General and administrative	33,388	25,763	31,902
Other operating	4,188
Total operating expenses	303,869	271,971	203,417
Operating income (loss)	(106,470)	108,626	55,752
Other income (expense)
Interest expense	(61,289)	(38,805)	(27,409)
Net gain (loss) on commodity derivatives	158,753	189,641	(2,566)
Other income (expense)	(2,852)	(7,624)	(3,443)
Other income (expense), net	94,612	143,212	(33,418)
Income (loss) before income tax	(11,858)	251,838	22,334
Income tax provision (benefit)
Current	113	53	85
Deferred	(2,894)	26,165	(156)
Total income tax provision (benefit)	(2,781)	26,218	(71)
Net income (loss)	(9,077)	225,620	22,405
Net income (loss) attributable to non-controlling interests	(6,696)	184,484	24,591
Net income (loss) attributable to controlling interests	$ (2,381)	$ 41,136	$ (2,186)
Earnings (Loss) per share:
Basic (in dollars per share)	$ (0.09)	$ 3.28	$ (0.17)
Diluted (in dollars per share)	$ (0.09)	$ 3.28	$ (0.17)
Weighted average shares outstanding:
Basic	26,816	12,526	12,500
Diluted	26,816	12,535	12,500