Derivative Instruments and Hedging Activities - Hedging Positions (Details) - Subsequent Event - Designated as Hedging Instrument	Nov. 07, 2016 bbl $ / MMBTU $ / bbl MBbls
NYMEX Price Swaps - Natural Gas 2016, Option One
Derivatives, Fair Value [Line Items]
Daily Volume (MMBtus/d) | MBbls	10,000
Swap Price ($)	4.110
NYMEX Price Swaps - Natural Gas 2016, Option Two
Derivatives, Fair Value [Line Items]
Daily Volume (MMBtus/d) | MBbls	10,000
Swap Price ($)	4.120
NYMEX Price Swaps - Natural Gas 2016, Option Three
Derivatives, Fair Value [Line Items]
Daily Volume (MMBtus/d) | MBbls
Swap Price ($)
NYMEX Price Swaps - Oil 2016, Option One
Derivatives, Fair Value [Line Items]
Swap Price ($) | $ / bbl	49.75
Daily Volume (Bbls/d) | bbl	1,000
NYMEX Price Swaps - Oil 2016, Option Two
Derivatives, Fair Value [Line Items]
Swap Price ($) | $ / bbl	52.78
Daily Volume (Bbls/d) | bbl	1,000
NYMEX Price Swaps - Oil 2016, Option Three
Derivatives, Fair Value [Line Items]
Swap Price ($) | $ / bbl	90.00
Daily Volume (Bbls/d) | bbl	1,000
NYMEX Collar - Oil 2016
Derivatives, Fair Value [Line Items]
Daily Volume (MMBtus/d) | bbl	1,000
Floor Price ($)	45.00
Ceiling Price ($)	54.75