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Note 5 - Other Real Estate Owned (Tables)
 3 Months Ended
Mar. 31, 2018
Notes Tables  
Other Real Estate Assets Acquired in Foreclosure Roll Forward [Table Text Block]
   
March 31
, 2018
  
   
Bank
    
ALC
    
Total
  
   
(Dollars in Thousands)
  
Beginning balance
   $
3,527
     $
265
     $
3,792
  
Additions
(1)
    
106
      
25
      
131
  
Sales proceeds
    
(611
)
    
(20
)
    
(631
)
                         
Gross gains
    
121
      
—
      
121
  
Gross losses
    
—
      
(23
)
    
(23
)
Net gains (losses)
    
121
      
(23
)
    
98
  
Impairment
    
(43
)
    
(4
)
    
(47
)
Ending balance
   $
3,100
     $
243
     $
3,343
  
   
March 31
, 2017
  
   
Bank
    
ALC
    
Total
  
   
(Dollars in Thousands)
  
Beginning balance
   $
4,353
     $
505
     $
4,858
  
Additions
(1)
    
—
      
20
      
20
  
Sales proceeds
    
(204
)
    
(84
)
    
(288
)
                         
Gross gains
    
13
      
—
      
13
  
Gross losses
    
(1
)
    
(15
)
    
(16
)
Net gains (losses)
    
12
      
(15
)
    
(3
)
Impairment
    
—
      
—
      
—
  
Ending balance
   $
4,161
     $
426
     $
4,587