Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 6,571	$ 4,238
Restricted cash	600	1,748
Accounts receivable	2,461	3,901
Accounts receivable - related entities	1,515	959
Prepaid expenses	744	1,783
Fair value of derivative instruments	21,010	14,671
Total current assets	32,901	27,300
Oil and natural gas properties and related equipment
Oil and natural gas properties, equipment and facilities (successful efforts method)	732,088	651,493
Gathering and transportation assets	147,479
Material and supplies	1,056	1,056
Less accumulated depreciation, depletion, amortization, accretion and impairments	(653,569)	(517,239)
Oil and natural gas properties and equipment, net	227,054	135,310
Other assets
Debt issuance costs	2,091	689
Intangible Assets	199,741
Fair value of derivative instruments	10,008	8,158
Other non-current assets	1,596	1,790
Total assets	473,391	173,247
Current liabilities
Accounts payable and accrued liabilities	7,288	5,759
Accounts payable and accrued liabilities - related entities	1,035
Royalties payable	689	1,134
Total current liabilities	9,012	6,893
Other liabilities
Asset retirement obligation	20,364	$ 17,031
Embedded derivatives	193,077
Long-term debt	107,000	$ 42,500
Total other liabilities	320,441	59,531
Total liabilities	329,453	66,424
Members' equity / Partners' capital
Common units	(45,285)
Total members' equity/partners' capital (deficit)	(28,173)	106,823
Total liabilities and members' equity/partners' capital	473,391	173,247
Class B Preferred [Member]
Mezzanine equity
Class B preferred units, 19,444,445 and zero units issued and outstanding as of December 31, 2015 and December 31, 2014, respectively	172,111
Class A Unit [Member]
Members' equity / Partners' capital
Common units		1,930
Total members' equity/partners' capital (deficit)		1,930
Class B Unit [Member]
Members' equity / Partners' capital
Common units		104,893
Total members' equity/partners' capital (deficit)		$ 104,893
Class A Preferred [Member]
Members' equity / Partners' capital
Class A preferred units, 11,409,131 and zero units issued and outstanding as of December 31, 2015 and December 31, 2014, respectively	17,112
Total members' equity/partners' capital (deficit)	17,112
Common Units [Member]
Members' equity / Partners' capital
Total members' equity/partners' capital (deficit)	$ (45,285)