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Retirement Plans
 9 Months Ended
Sep. 30, 2015
Retirement Plans [Abstract]  
Retirement Plans
6.Retirement Plans

The Company’s components of annual benefit cost for the defined benefit plans for the periods presented are as follows:
 
  
Three Months Ended
September 30,
  
Nine Months Ended 
September 30,
 
(In thousands)
 
2015
  
2014
  
2015
  
2014
 
         
Service cost
 
$
654
  
$
610
  
$
1,977
  
$
1,877
 
Interest cost
  
467
   
502
   
1,412
   
1,704
 
Expected return on plan assets
  
(321
)
  
(478
)
  
(967
)
  
(1,432
)
Amortization of prior service cost
  
-
   
43
   
-
   
129
 
Amortization of actuarial loss (gain)
  
72
   
(14
)
  
219
   
(331
)
Settlement expense
  
506
   
289
   
506
   
289
 
Curtailment gain
  
-
   
-
   
-
   
(115
)
                 
Total defined benefit expense
 
$
1,378
  
$
952
  
$
3,147
  
$
2,121