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Employee Post-Retirement Benefits (Tables)
6 Months Ended
Jun. 30, 2014
Employee Post-Retirement Benefits [Abstract]  
Employee Post-Retirement Benefits
The components of net periodic benefit cost were as follows:

 
 
Three Months Ended
  
Six Months Ended
 
 
 
June 30
  
June 30
 
(Dollars in thousands)
 
2014
  
2013
  
2014
  
2013
 
Service cost
 
$
55
  
$
67
  
$
110
  
$
134
 
Interest cost
  
131
   
120
   
263
   
240
 
Amortization of prior service credit
  
(236
)
  
(236
)
  
(472
)
  
(472
)
Recognized net actuarial loss
  
98
   
120
   
196
   
240
 
Net periodic benefit cost
 
$
48
  
$
71
  
$
97
  
$
142