Costs Incurred in Oil and Gas Property Acquisition (Detail) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Acquisition costs:
Unproved properties	$ 34,500	$ 0
Proved properties	0	0
Exploration costs	0us-gaap_ExplorationCosts	0us-gaap_ExplorationCosts
Development costs	594,359us-gaap_DevelopmentCosts	307,834us-gaap_DevelopmentCosts
Revisions to asset retirement obligations	0	34,934
Total costs incurred	$ 628,859	$ 342,768
Depletion per BOE of production	22.24aret_DepletionPerBoeOfProduction	19.01aret_DepletionPerBoeOfProduction

- Definition

The capitalized costs incurred during the period (excluded from amortization) 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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