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Note 6 - Other Real Estate Owned (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Other Real Estate, Roll Forward [Table Text Block]
(dollars in thousands)
  
December 31
,
201
8
    
December 31,
201
7
    
December 31,
201
6
  
Beginning Balance, January 1
st
   $
6,966
     $
10,174
      
11,313
  
Additions
    
315
      
291
      
616
  
Valuation adjustments
    
(563
 )    
(3,000
 )    
(355
 )
Dispositions
    
(495
 )    
(499
 )    
(1,400
 )
Ending Balance
   $
6,223
     $
6,966
      
10,174