Disclosure About Oil and Gas Producing Activities (Unaudited) (Details Textuals) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Oil And Gas Exploration And Production Industries [Abstract]
External engineer responsible for preparing the reserve estimate years of experience	25
Weighted Average Sales Price For Proved Reserves Natural Gas		$ 4.035	$ 4.05	$ 3.04
Weighted Average Sales Price For Proved Reserves Condensate		$ 88.19	$ 68.93	$ 52.18
Internal Engineer Experience	17