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Note 5 - Other Real Estate Owned (Tables)
 12 Months Ended
Dec. 31, 2017
Notes Tables  
Other Real Estate, Roll Forward [Table Text Block]
    For the years ended December 31,
    2017   2016   2015
    (In thousands)
             
Balance at beginning of year   $
533
     $
4,932
     $
6,326
  
Acquisitions    
-
      
639
      
1,667
  
Reductions to carrying value    
-
      
(1,763
 )    
(896
 )
Sales    
(533
 )    
(3,275
 )    
(2,165
 )
                         
Balance at end of year   $
-
     $
533
     $
4,932
  
Gross Gains, Gross (Losses) and Write-downs of OREO [Table Text Block]
    For the years ended December 31,
    2017   2016   2015
    (In thousands)
             
Gross gains   $
50
     $
37
     $
306
  
Gross losses    
-
      
(275
 )    
(6
 )
Write-down of carrying value    
-
      
(1,763
 )    
(896
 )
                         
Total Income (Expense)   $
50
     $
(2,001
 )   $
(596
 )