Derivative Instruments (Details) (USD $)	2 Months Ended					12 Months Ended		12 Months Ended
	Feb. 28, 2013 Subsequent Event [Member] February - December 2013 [Member] Crude Oil [Member] MBbls	Feb. 28, 2013 Subsequent Event [Member] Swap [Member] February - December 2013 [Member] Natural Gas [Member] MMBTU	Feb. 28, 2013 Subsequent Event [Member] Swap [Member] March - December 2013 [Member] Natural Gas [Member] MMBTU	Feb. 28, 2013 Subsequent Event [Member] Swap [Member] April - December 2013 Natural Gas [Member] MMBTU	Feb. 28, 2013 Subsequent Event [Member] Swap [Member] January - December 2014 Natural Gas [Member] MMBTU	Dec. 31, 2012 Production Period Three [Member] Swap [Member] Natural Gas [Member] MMBTU	Oct. 31, 2012 Production Period Three [Member] Swap [Member] Natural Gas [Member]	Dec. 31, 2012 Production Period Three [Member] Three Way Collar [Member] Natural Gas [Member] MMBTU	Dec. 31, 2012 Production Period Three [Member] Three Way Collar [Member] Maximum [Member] Natural Gas [Member]	Dec. 31, 2012 Production Period Three [Member] Three Way Collar [Member] Minimum [Member] Natural Gas [Member]
Oil and gas contracts
Daily Volumes	0.250	10,000	5,000	5,000	10,000	5,000		10,000
Weighted Average Price	$ 104.75	$ 3.71	$ 3.50	$ 3.74	$ 4.08		$ 4.00	$ 3.00	$ 4.09	$ 2.00