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Note 5 - Accumulated Other Comprehensive Income (Tables)
6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Unrealized gains on
 
   
available-for-sale
 
(Dollars in thousands)
 
securities
 
Balance as of December 31, 2016
  $
1,201
 
Other comprehensive income before reclassification
   
153
 
Amount reclassified from accumulated other comprehensive income
   
(322
)
Period change
   
(169
)
Balance at March 31, 2017
  $
1,032
 
         
Other comprehensive income before reclassification
   
783
 
Amount reclassified from accumulated other comprehensive income
   
-
 
Period change
   
783
 
Balance at June 30, 2017
  $
1,815
 
   
Unrealized gains on
 
   
available-for-sale
 
(Dollars in thousands)
 
securities
 
Balance as of December 31, 2015
  $
2,395
 
Other comprehensive income before reclassification
   
360
 
Amount reclassified from accumulated other comprehensive income
   
(34
)
Period change
   
326
 
Balance at March 31, 2016
   
2,721
 
         
Other comprehensive loss before reclassification
   
1,325
 
Amount reclassified from accumulated other comprehensive income
   
(166
)
Period change
   
1,159
 
Balance at June 30, 2016
  $
3,880
 
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
    Amount Reclassified from Accumulated Other Comprehensive  
Affected Line Item in
    Income (a)   
the Statement Where
(Dollars in thousands)
 
For the Three Months Ended 
 
Net Income is
Details about other comprehensive income
 
June 30, 2017
   
June 30, 2016
 
Presented
Unrealized gains on available-for-sale securities
                 
     
-
    $
252
 
Investment securities gains, net
     
-
     
(86
)
Income taxes
     
-
    $
166
 
 
    Amount Reclassified from Accumulated Other Comprehensive  
Affected Line Item in
    Income (a)  
the Statement Where
(Dollars in thousands)
  For the Six Months Ended  
Net Income is
Details about other comprehensive income
  June 30, 2017    
June 30, 2016
 
Presented
Unrealized gains on available-for-sale securities
                 
    $
488
    $
303
 
Investment securities gains, net
     
(166
)    
(103
)
Income taxes
    $
322
    $
200