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Note 6 - Other Real Estate Owned and Repossessions (Tables)
 3 Months Ended
Mar. 31, 2019
Notes Tables  
Other Real Estate Assets Acquired in Foreclosure Roll Forward [Table Text Block]
   
March 31
, 2019
  
   
Bank
    
ALC
    
Total
  
   
(Dollars in Thousands)
  
Beginning balance
   $
1,401
     $
104
     $
1,505
  
Additions
(1)
    
83
      
38
      
121
  
Sales proceeds
    
(311
)
    
(63
)
    
(374
)
                         
Gross gains
    
27
      
2
      
29
  
Gross losses
    
—
      
(21
)
    
(21
)
Net gains (losses)
    
27
      
(19
)
    
8
  
Impairment
    
—
 
    
(38
)
    
(38
)
Ending balance
   $
1,200
     $
22
     $
1,222
  
   
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