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Defined Benefit Postretirement Plans (Tables)
6 Months Ended
Jun. 30, 2014
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 June 30,
  
Three months ended June 30,
 
Components of net periodic benefit cost:
 
2014
  
2013
  
2014
  
2013
 
Service cost
 
$
587
  
$
604
  
$
4
  
$
6
 
Interest cost
  
1,040
   
830
   
90
   
75
 
Expected return on plan assets
  
(2,175
)
  
(1,929
)
  
-
   
-
 
Net amortization
  
25
   
711
   
(6
)
  
(1
)
Total cost (benefit)
 
$
(523
)
 
$
216
  
$
88
  
$
80
 

 
 
Pension Benefits
  
Other Benefits
 
 
 
Six months ended June 30,
  
Six months ended June 30,
 
Components of net periodic benefit cost:
 
2014
  
2013
  
2014
  
2013
 
Service cost
 
$
1,174
  
$
1,209
  
$
8
  
$
12
 
Interest cost
  
2,080
   
1,659
   
180
   
150
 
Expected return on plan assets
  
(4,350
)
  
(3,858
)
  
-
   
-
 
Net amortization
  
50
   
1,314
   
(12
)
  
222
 
Total cost (benefit)
 
$
(1,046
)
 
$
324
  
$
176
  
$
384