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Income Taxes (Details 1) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Federal income tax expense (benefit) at statutory rate $ 351,395 $ 410,686 $ 28,207
Statutory depletion (143,291) (320,627) (169,589)
Prior period tax changes (8,000) 0 0
State income taxes 12,221 28,800 17,100
Other 27,496 (6,156) (38,618)
Income tax provision (benefit) $ 239,821 $ 112,703 $ (162,900)