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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Available for sale securities, amortized cost $ 36,899,459 $ 33,203,777
Common stock, par value (in dollars per share) $ 0.10 $ 0.10
Common stock, shares authorized (in shares) 20,000,000 20,000,000
Common stock, shares issued (in shares) 7,515,492 7,310,939
Common stock, shares outstanding (in shares) 7,515,492 7,310,939
Fixed Maturities [Member]    
Available for sale securities, amortized cost $ 25,080,788 $ 22,439,705
Equities, Including Equity Securities and Other Equity Investments [Member]    
Available for sale securities, amortized cost $ 11,818,671 $ 10,764,072