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Asset Retirement Obligation (Details) (USD $)	12 Months Ended
Asset Retirement Obligation (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Asset Retirement Obligation [Abstract]
Asset retirement obligation at beginning of period	$ 837,200	$ 678,400
Accretion expense	42,700	40,700
Revisions	600	118,100
Asset retirement obligation at end of period	$ 880,500	$ 837,200

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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- Definition

Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

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