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Loan Servicing (Tables)
 12 Months Ended
Dec. 31, 2014
Loan Servicing [Abstract]  
Schedule of activity pertaining to mortgage servicing rights measured using the amortization method
   
2014
    
2013
  
Mortgage servicing rights
        
Balances, January 1
  
$
655
    
$
679
  
Servicing rights capitalized
    
 
120
      
 
191
  
Amortization of servicing rights
    
(188
)
    
(215
)
Balance at end of year
   $
 
587
     $
 
655
  
                 
Fair value disclosures
                
Fair value as of the beginning of the period
  
$
894
    
$
704
  
Fair value as of the end of the period
    
 
876
      
 
894