Annual report pursuant to Section 13 and 15(d)

Supplemental Oil and Gas Reserve Information (Unaudited) (Details 3)

v3.7.0.1
Supplemental Oil and Gas Reserve Information (Unaudited) (Details 3)
12 Months Ended
Dec. 31, 2016
MBoe
Mcf
MBbls
Crude Oil [Member]  
Proved Reserves, Volume [Roll Forward]  
Beginning, Total Proved Non-Producing
Beginning, Proved Undeveloped
Beginning, Total Proved
Revisions of previous estimates, Total Proved Non-Producing
Revisions of previous estimates, Proved Undeveloped
Revisions of previous estimates, Total Proved
Sales of minerals in place, Total Proved Non-Producing
Sales of minerals in place, Proved Undeveloped
Sales of minerals in place, Total Proved
Production, Total Proved Non-Producing
Production, Proved Undeveloped
Production, Total Proved
Ending, Total Proved Non-Producing 193
Ending, Proved Undeveloped 1,429
Ending, Total Proved 1,622
Natural Gas Liquids [Member]  
Proved Reserves, Volume [Roll Forward]  
Beginning, Total Proved Non-Producing
Beginning, Proved Undeveloped
Beginning, Total Proved
Revisions of previous estimates, Total Proved Non-Producing
Revisions of previous estimates, Proved Undeveloped
Revisions of previous estimates, Total Proved
Production, Total Proved Non-Producing
Production, Proved Undeveloped
Production, Total Proved
Ending, Total Proved Non-Producing
Ending, Proved Undeveloped
Ending, Total Proved
Natural Gas [Member]  
Proved Reserves, Volume [Roll Forward]  
Beginning, Total Proved Non-Producing | Mcf
Beginning, Proved Undeveloped | Mcf
Beginning, Total Proved | Mcf
Revisions of previous estimates, Total Proved Non-Producing | Mcf
Revisions of previous estimates, Proved Undeveloped | Mcf
Revisions of previous estimates, Total Proved | Mcf
Production, Total Proved Non-Producing | Mcf
Production, Proved Undeveloped | Mcf
Production, Total Proved | Mcf
Ending, Total Proved Non-Producing | Mcf 97
Ending, Proved Undeveloped | Mcf 714
Ending, Total Proved | Mcf 811
Oil Equivalents [Member]  
Proved Reserves, Energy [Roll Forward]  
Beginning, Total Proved Non-Producing | MBoe
Beginning, Proved Undeveloped | MBoe
Beginning, Total Proved | MBoe
Revisions of previous estimates, Total Proved Non-Producing | MBoe
Revisions of previous estimates, Proved Undeveloped | MBoe
Revisions of previous estimates, Total Proved | MBoe
Production, Total Proved Non-Producing | MBoe
Production, Proved Undeveloped | MBoe
Production, Total Proved | MBoe
Ending, Total Proved Non-Producing | MBoe 212.4
Ending, Proved Undeveloped | MBoe 1,571.8
Ending, Total Proved | MBoe 1,784.2