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Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2014
Benefit Plans [Abstract]  
Components of Company's net periodic cost
The table below outlines the components of the Company's net periodic benefit recognized during the three month periods ended March 31, 2014 and 2013 for its pension and other postretirement benefit plans:

 
 
For the three months ended March 31,
 
 
 
Pension Benefits
  
Other Postretirement Benefits
 
(dollars in thousands)
 
2014
  
2013
  
2014
  
2013
 
 
 
  
  
  
 
Service cost
  
18
   
14
   
14
   
12
 
Interest cost
  
336
   
315
   
32
   
24
 
Expected return on plan assets
  
(609
)
  
(498
)
  
(169
)
  
(123
)
Amortization of net loss (gain)
  
-
   
147
   
(72
)
  
(15
)
Amortization of prior service credit
  
-
   
-
   
(45
)
  
(66
)
Net periodic benefit
  
(255
)
  
(22
)
  
(240
)
  
(168
)