Property and Equipment (Details Textual) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2009
Property and Equipment (Textual) [Abstract]
Amortization costs	7,300,000
Amount for exploration wells	6,612,000
Amount for development wells	2,573,000
Anticipated amount for wells	7,300,000
Well costs excluded from amortization	1,900,000
Maximum [Member]
Property, Plant and Equipment [Line Items]
Evaluation of properties and amortization Cost are expected to be completed	10 years	5 years	4 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Evaluation of properties and amortization Cost are expected to be completed	5 years	3 years	2 years

Capitalized costs which include those incurred to (1) to drill and equip those exploratory wells and exploratory-type stratigraphic test wells that have found proved reserves and (2) obtain access to proved reserves and provide facilities for extracting, treating, gathering, storing the oil and gas, including the drilling and equipping of development wells and development-type stratigraphic wells and service wells.

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The capitalized costs incurred (excluded from amortization), as of the date of the balance sheet, in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. Exploration costs also include costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, the maintenance of land and lease records, dry hole contributions and bottom hole contributions, costs of drilling and equipping exploratory wells and costs of drilling exploratory-type stratigraphic test wells.

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