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Note 12 - Earnings Per Common Share (Details) - Earnings Per Common Share - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Earnings Per Common Share [Abstract]    
Earnings per common share, basic 3,300,440 3,284,870
Earnings per common share, basic $ 2,714 $ 2,575
Earnings per common share, basic $ 0.82 $ 0.78
Series C Preferred Stock Dividends $ 840 $ 840
Effect of dilutive securities:    
Convertible preferred stock 2,234,740 2,240,000
Convertible preferred stock $ (0.18) $ (0.16)
Earnings per common share, diluted 5,535,180 5,524,870
Earnings per common share, diluted $ 3,554 $ 3,415
Earnings per common share, diluted $ 0.64 $ 0.62