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Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2012
Benefit Plans [Abstract]  
Components of the Company's net periodic cost
The table below outlines the components of the Company's net periodic expense (benefit) recognized during the three month and six month periods ended June 30, 2012 and 2011 for its pension and other postretirement benefit plans:
 
   
For the three months ended June 30,
 
   
Pension Benefits
  
Other Postretirement Benefits
 
(dollars in thousands)
 
2012
  
2011
  
2012
  
2011
 
              
Service cost
 $12   12   8   4 
Interest cost
  365   379   25   33 
Expected return on plan assets
  (474)  (497)  (112)  (112)
Amortization of net loss (gain)
  102   39   (5)  (17)
Amortization of prior service credit
  -   -   (65)  (30)
Net periodic expense (benefit)
 $5   (67)  (149)  (122)

   
For the six months ended June 30,
 
   
Pension Benefits
  
Other Postretirement Benefits
 
(dollars in thousands)
 
2012
  
2011
  
2012
  
2011
 
              
Service cost
 $24   23   16   13 
Interest cost
  730   758   51   49 
Expected return on plan assets
  (948)  (993)  (225)  (224)
Amortization of net loss (gain)
  204   78   (10)  (36)
Amortization of prior service credit
  -   -   (131)  (131)
Net periodic expense (benefit)
 $10   (134)  (299)  (329)