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Balance Sheets (Parentheticals) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Building and Equipment [Member]    
Accumulated depreciation $ 84,156 $ 90,432
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized (in shares) 3,000,000 3,000,000
Common stock, shares issued (in shares) 1,942,495 2,100,000
Treasury stock, shares (in shares) 0 157,505