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Note 5 - Accumulated Other Comprehensive Income (Tables)
9 Months Ended
Sep. 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 June 30, 2017
  $
1,815
 
Other comprehensive income before reclassification
   
(175
)
Amount reclassified from accumulated other comprehensive income
   
(263
)
Period change
   
(438
)
Balance at September 30, 2017
  $
1,377
 
         
Balance as of December 31, 2016
  $
1,201
 
Other comprehensive income before reclassification
   
761
 
Amount reclassified from accumulated other comprehensive income
   
(585
)
Period change
   
176
 
Balance at September 30, 2017
  $
1,377
 
   
Unrealized gains on
 
   
available-for-sale
 
(Dollars in thousands)
 
securities
 
Balance as of June 30, 2016
  $
3,879
 
Other comprehensive loss before reclassification
   
(263
)
Amount reclassified from accumulated other comprehensive income
   
-
 
Period change
   
(263
)
Balance at September 30, 2016
  $
3,616
 
         
Balance as of December 31, 2015
  $
2,395
 
Other comprehensive income before reclassification
   
1,421
 
Amount reclassified from accumulated other comprehensive income
   
(200
)
Period change
   
1,221
 
Balance at September 30, 2016
  $
3,616
 
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
 
September 30, 2017
   
September 30, 2016
 
Presented
Unrealized gains on available-for-sale securities
                 
    $
398
    $
-
 
Investment securities gains, net
     
(135
)    
-
 
Income taxes
    $
263
    $
-
 
 
   
Amount Reclassified from Accumulated Other Comprehensive
 
Affected Line Item in
    Income (a)  
the Statement Where
(Dollars in thousands)
 
For the Nine Months Ended
 
Net Income is
Details about other comprehensive income
 
September 30, 2017
   
September 30, 2016
 
Presented
Unrealized gains on available-for-sale securities
                 
    $
886
    $
303
 
Investment securities gains, net
     
(301
)    
(103
)
Income taxes
    $
585
    $
200