Derivative Instruments (Details) - Not Designated as Hedging Instrument
9 Months Ended
Sep. 30, 2017
MMBTU
$ / bbl
$ / MMBTU
bbl
Crude Oil Swap - Oil Remainder of Current Year  
Derivative [Line Items]  
Volume (Bbl) | bbl 170,200
Weighted Average Fixed Price ($/Bbl or $/MMBtu) | $ / bbl (50.41)
Crude Oil Swap - Oil Next Year  
Derivative [Line Items]  
Volume (Bbl) | bbl 36,500
Weighted Average Fixed Price ($/Bbl or $/MMBtu) | $ / bbl (55.95)
Crude Oil Basis Swap - Oil Remainder of Current Year  
Derivative [Line Items]  
Volume (Bbl) | bbl 21,350
Weighted Average Fixed Price ($/Bbl or $/MMBtu) | $ / bbl (0.20)
Natural Gas Swap - Remainder of Current Year  
Derivative [Line Items]  
Volume (MMBtu) | MMBTU 368,000
Weighted Average Fixed Price ($/Bbl or $/MMBtu) | $ / MMBTU (2.94)
Natural Gas Swap - Next Year  
Derivative [Line Items]  
Volume (MMBtu) | MMBTU 1,825,000
Weighted Average Fixed Price ($/Bbl or $/MMBtu) | $ / MMBTU (0.43)
Natural Gas Swap - Year Three  
Derivative [Line Items]  
Volume (MMBtu) | MMBTU 1,825,000
Weighted Average Fixed Price ($/Bbl or $/MMBtu) | $ / MMBTU (0.43)