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Defined Benefit Postretirement Plans (Tables)
9 Months Ended
Sep. 30, 2013
Defined Benefit Postretirement Plans [Abstract]  
Components of Net Periodic Pension Benefits and Other Benefit Costs
The components of expense for Pension Benefits and Other Benefits are set forth below (in thousands):
 
 
 
Pension Benefits
  
Other Benefits
 
 
 
Three months ended September 30,
  
Three months ended September 30,
 
Components of net periodic benefit cost:
 
2013
  
2012
  
2013
  
2012
 
Service cost
 
$
604
  
$
757
  
$
6
  
$
6
 
Interest cost
  
830
   
774
   
75
   
40
 
Expected return on plan assets
  
(1,929
)
  
(1,676
)
  
-
   
-
 
Net amortization
  
711
   
992
   
(2
)
  
(3
)
Total cost (benefit)
 
$
216
  
$
847
  
$
79
  
$
43
 
 
                
 
 
Pension Benefits
  
Other Benefits
 
 
 
Nine months ended September 30,
  
Nine months ended September 30,
 
Components of net periodic benefit cost:
  
2013
   
2012
   
2013
   
2012
 
Service cost
 
$
1,813
  
$
2,270
  
$
18
  
$
16
 
Interest cost
  
2,489
   
2,322
   
224
   
119
 
Expected return on plan assets
  
(5,786
)
  
(5,026
)
  
-
   
-
 
Net amortization
  
2,025
   
2,710
   
219
   
(8
)
Total cost (benefit)
 
$
541
  
$
2,276
  
$
461
  
$
127