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Note 9 - Earnings Per Common Share (Details) - Earnings Per Common Share - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Earnings Per Common Share [Abstract]    
Earnings per common share, basic 3,366,778 3,291,517
Earnings per common share, basic (in Dollars) $ 597 $ 566
Earnings per common share, basic (in Dollars per share) $ 0.18 $ 0.17
Series C Preferred Stock Dividends (in Dollars) $ 204 $ 210
Effect of dilutive securities:    
Convertible preferred stock 2,176,000 2,240,000
Convertible preferred stock (in Dollars per share) $ (0.04) $ (0.03)
Dilutive stock options 22,851  
Earnings per common share, diluted 5,565,629 5,531,517
Earnings per common share, diluted (in Dollars) $ 801 $ 776
Earnings per common share, diluted (in Dollars per share) $ 0.14 $ 0.14