Quarterly report pursuant to Section 13 or 15(d)

Derivatives and Fair Value (Notional) (Detail)

v3.5.0.2
Derivatives and Fair Value (Notional) (Detail)
1 Months Ended 6 Months Ended
Apr. 30, 2016
$ / Boe
Jun. 30, 2016
bbl
Derivative, Nonmonetary Notional Amount per Month | bbl   36,000
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]    
Underlying, Derivative Energy Measure | $ / Boe 40.00