Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments - Fair value (Details)

v3.5.0.2
Derivative Instruments - Fair value (Details)
$ in Thousands
Jun. 30, 2016
USD ($)
item
Dec. 31, 2015
USD ($)
Fair value of derivative instruments    
Current portion of fair value of derivative assets $ 429,920 $ 1,009,030
Noncurrent portion of fair value of derivative assets 1,673,907 2,108,450
Total asset derivatives 2,103,827 3,117,480
Current portion of fair value of derivative liability 2,726  
Noncurrent portion of fair value of derivative liability 5,179  
Total liability derivatives 7,905  
Net fair value of commodity derivative assets position    
Fair value of derivative instruments    
Current portion of fair value of derivative liability 2,726  
Noncurrent portion of fair value of derivative liability 5,179  
Derivatives not designated as hedges for accounting purposes | Net fair value of commodity derivative assets position    
Fair value of derivative instruments    
Current portion of fair value of derivative assets 429,920 1,009,030
Noncurrent portion of fair value of derivative assets 1,673,907 2,108,450
Total asset derivatives 2,103,827 3,117,480
Total liability derivatives 7,905  
Net derivatives $ 2,095,922 $ 3,117,480
Derivatives designated as hedges for accounting purposes    
Fair value of derivative instruments    
Number of derivative instruments held designated as hedges | item 0