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Other Comprehensive Income (Tables)
 9 Months Ended
Sep. 30, 2019
Equity [Abstract]  
Summary of Components of Other Comprehensive Income
The table below provides a summary of the components of other comprehensive income (“OCI”) for the periods presented.
                                                 
 
For the Three Months Ended September 30,
 
2019
 
2018
 
Before-tax
  
Tax effect
  
After-tax
  
Before-tax
  
Tax effect
  
After-tax
  
 
(Dollars in thousands)
Investment securities:
   
     
     
     
     
     
 
Net change in fair value recorded in
accumulated OCI
  $
 
 
 
 5,672
 
     $
 
 (1,677
)
 		   $
 
 3,995
     $
  (10,235
 )   $
3,025 
     $
(7,210
)
Net realized gain reclassified into earnings (1)
 
 
(5)
 
 
 
1
 
 
 
(4
)
 
 
-
 
 
 
-
 
 
 
 
-
 
Amortization of unrealized losses on securities
transferred from
 
available-for-sale
to
held-to-maturity
   
(249
 )    
74
      
(175
 )    
(152)
      
45 
      
(107
)
                                                 
Net change
     $
 
 
 
 
5,418
       $
 
 
 
(1,602
 )     $
 
 
 
 
3,816
       $
 
 
 
(10,387)
       $
 
 
3,070 
       $
 
 
(7,317
)
     
 
For the Nine Months Ended September 30,
 
2019
 
2018
 
Before-tax
  
Tax effect
  
After-tax
  
Before-tax
  
Tax effect
  
After-tax
  
 
(Dollars in thousands)
Investment securities:
   
     
     
     
     
     
 
Net change in fair value recorded in
accumulated OCI
    $
 
 
44,586
       $
(13,181
 )     $
31,405
       $
(47,346
 )     $
  13,997
       $
 
 
 
  (33,349
)
Net realized gain reclassified into earnings (1)
 
 
(5
 )
 
 
1
 
 
 
(4
 )
 
 
-
 
 
 
-
 
 
 
-
 
Amortization of unrealized losses on securities
transferred from
 
available-for-sale
to
held-to-maturity
   
(1,450
 )    
429
      
(1,021
 )    
(1,809
 )    
535
      
(1,274
 )
                                                 
Net change
    $
 
 
43,131
       $
 
(12,751
 )     $
 
 
 
30,380
       $
 
 
 
(49,155
)
     $
14,532
       $
(34,623
 )
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(1)
Included in other noninterest income.