Oil and Gas Exploration and Production Industries Disclosures (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Proved properties	$ 19,828,900	$ 18,946,000	$ 17,922,900
Unproved properties being amortized	178,600	178,600	178,600
Unproved properties not being amortized	0	0	0
Capitalized asset retirement costs	425,978	401,242	389,500
Accumulated depletion, depreciation, amortization and valuation allowances	(17,912,400)	(17,132,100)	(15,755,500)
Capitalized Costs, Oil and Gas Producing Activities, Net	$ 2,521,100	$ 2,393,700	$ 2,735,500