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Note 14 - Accumulated Other Comprehensive Income (Loss) - (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
2019
    
2018
  
   
(Dollars in thousands)
  
Unrealized Gains (Losses) on Securities Available for Sale:
                
                 
Balance at Beginning of Year
   $
(3,469
 )   $
(1,644
 )
                 
Other Comprehensive Income (Loss)
                
Before Reclassifications - Net of Tax
    
5,998
      
(1,831
 )
Reclassification Adjustment for Gains
                
Realized - Net of Tax
    
84
      
6
  
                 
Other Comprehensive Income (Loss)
    
6,082
      
(1,825
 )
                 
Balance at End of Year
   $
2,613
     $
(3,469
 )