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Consolidated Balance Sheets (unaudited) (Parentheticals) - $ / shares
Sep. 30, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock, shares authorized 15,000,000 15,000,000
Common stock, shares issued 5,605,202 5,395,844
Treasury stock, shares 161,858 161,858