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Note 6 - Other Real Estate Owned and Repossessions (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Other Real Estate Assets Acquired in Foreclosure Roll Forward [Table Text Block]
   
December 31, 2018
  
   
Bank
    
ALC
    
Total
  
   
(Dollars in Thousands)
  
Beginning balance
   $
3,527
     $
265
     $
3,792
  
Additions
(1)
    
399
      
57
      
456
  
Sales proceeds
    
(2,567
)
    
(89
)
    
(2,656
)
                         
Gross gains
    
267
      
15
      
282
  
Gross losses
    
(46
)
    
(81
)
    
(127
)
Net gains (losses)
    
221
 
    
(66
)
    
155
 
Impairment
    
(179
)
    
(63
)
    
(242
)
Ending balance
   $
1,401
     $
104
     $
1,505
  
   
December 31, 2017
  
   
Bank
    
ALC
    
Total
  
   
(Dollars in Thousands)
  
Beginning balance
   $
4,353
     $
505
     $
4,858
  
Additions
(1)
    
—
      
87
      
87
  
Sales proceeds
    
(649
)
    
(199
)
    
(848
)
                         
Gross gains
    
14
      
—
      
14
  
Gross losses
    
(20
)
    
(101
)
    
(121
)
Net gains (losses)
    
(6
)
    
(101
)
    
(107
)
Impairment
    
(171
)
    
(27
)
    
(198
)
Ending balance
   $
3,527
     $
265
     $
3,792