Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details 4)

v3.4.0.3
Derivative Instruments (Details 4) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Summary of realized and unrealized gains (losses) on derivative instruments    
Commodity derivative fair value gains $ 279,924 $ 759,554
Revenue    
Summary of realized and unrealized gains (losses) on derivative instruments    
Commodity derivative fair value gains $ 279,924 $ 759,554