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Note 16 - Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Related Party Transactions [Table Text Block]
   
YEARS ENDED DECEMBER 31,
  
(in thousands)
  
201
8
    
201
7
  
                 
Aggregate amount outstanding, beginning of year
   $
5,350
     $
7,100
  
New loans or advances during year
    
2,454
      
7
  
Repayments during year
    
(1,909
)
    
(1,757
)
Aggregate amount outstanding, end of year
   $
5,895
     $
5,350