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Retirement Plans
 6 Months Ended
Jun. 30, 2016
Retirement Plans [Abstract]  
Retirement Plans
5.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
June 30,
  
Six Months Ended
June 30,
 
(In thousands)
 
2016
  
2015
  
2016
  
2015
 
             
Service cost
 
$
503
  
$
661
  
$
1,006
  
$
1,323
 
Interest cost
  
425
   
473
   
845
   
945
 
Expected return on plan assets
  
(300
)
  
(324
)
  
(597
)
  
(646
)
Amortization of actuarial loss
  
55
   
74
   
108
   
147
 
                 
Total defined benefit expense
 
$
683
  
$
884
  
$
1,362
  
$
1,769