Subsequent Events (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012 acre Well Mcfe Bcfe	Dec. 31, 2011 Bcfe	Feb. 28, 2013 ASD Credit Agreement [Member]	Apr. 26, 2012 ASD Credit Agreement [Member]	Feb. 29, 2012 ASD Credit Agreement [Member]
Subsequent Events (Additional Textual) [Abstract]
Credit facility, face amount			$ 75,000,000	$ 50,000,000	$ 50,000,000
Subsequent Events (Textual) [Abstract]
Retained an overriding royalty interest	2.50%
Number of wellbores operator assumed	300
Production of wells mcfe per day	800
Proven reserves of wells Bcfe per day		2.5
Overriding royalty interest retained	5.00%
Right to participate of any well drilled by the shallow operator	20.00%
Right to participate in case shallow operator fails	50.00%
Number of acres lease represent	3,500