Derivative Instruments (Details) - Natural Gas: - Swap	12 Months Ended
	Dec. 31, 2015 MMBTU $ / shares
January 2016 - June 2016
Oil and gas contracts
Daily Volumes | MMBTU	10,000
Weighted Average Price | $ / shares	$ 3.22
July 2016 - December 2016
Oil and gas contracts
Daily Volumes | MMBTU	5,000
Weighted Average Price | $ / shares	$ 2.50