Derivative Instruments (Details) - Swap - Natural Gas:	9 Months Ended
	Sep. 30, 2017 MMBTU $ / shares
October - December 2017
Oil and gas contracts
Daily Volumes | MMBTU	40,000
Weighted Average Price | $ / shares	$ 3.22
January - March 2018
Oil and gas contracts
Daily Volumes | MMBTU	35,000
Weighted Average Price | $ / shares	$ 3.24