Physical Delivery Contracts and Commodity Derivatives (Details)	Sep. 30, 2016 USD_MMBtu USD_Bbl $ / shares
Oct - Dec 2016 [Member] | Natural Gas [Member]
Derivative Instrument Detail [Abstract]
Quantity | USD_MMBtu	930,000
Weighted Average Price	$ 3.20	[1]
Oct - Dec 2016 [Member] | Oil [Member]
Derivative Instrument Detail [Abstract]
Quantity | USD_Bbl	12,000
Weighted Average Price	$ 50.73	[2]
2017 [Member] | Natural Gas [Member]
Derivative Instrument Detail [Abstract]
Quantity | USD_MMBtu	3,360,000
Weighted Average Price	$ 3.30	[1]
2017 [Member] | Oil [Member]
Derivative Instrument Detail [Abstract]
Quantity | USD_Bbl	48,000
Weighted Average Price	$ 52.83	[2]
2018 [Member] | Natural Gas [Member]
Derivative Instrument Detail [Abstract]
Quantity | USD_MMBtu	3,120,000
Weighted Average Price	$ 3.01	[1]
2018 [Member] | Oil [Member]
Derivative Instrument Detail [Abstract]
Quantity | USD_Bbl	36,000
Weighted Average Price	$ 54.25	[2]
2019 [Member] | Natural Gas [Member]
Derivative Instrument Detail [Abstract]
Quantity | USD_MMBtu	1,320,000
Weighted Average Price	$ 2.85	[1]
2019 [Member] | Oil [Member]
Derivative Instrument Detail [Abstract]
Quantity | USD_Bbl	24,000
Weighted Average Price	$ 54.85	[2]

[1] NYMEX Henry Hub Natural Gas futures contract for the respective period.

[2] NYMEX Light Sweet Crude West Texas Intermediate futures contract for the respective period.