Disclosure About Oil and Gas Producing Activities (Unaudited) (Details Textuals) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Oil And Gas Exploration And Production Industries Disclosures [Abstract]
Internal Engineer Experience	18
External engineer responsible for preparing the reserve estimate years of experience	30
Weighted Average Sales Price For Proved Reserves Textuals [Abstract]
Weighted Average Sales Price For Proved Reserves Natural Gas	$ 2.63	$ 4.04	$ 4.05
Weighted Average Sales Price For Proved Reserves Condensate	$ 87.85	$ 88.19	$ 68.93