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Pension Plan
 9 Months Ended
Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Pension Plan
Pension Plan

Net periodic pension (income) cost consists of the following: 

Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2015
 
2014
 
2015
 
2014

 
 


 
 
 


Service cost
$
60

 
$
68

 
$
180

 
$
203


 
 


 
 
 


Interest cost on projected benefit obligation
849

 
866

 
2,546

 
2,599


 
 


 
 
 


Expected return on plan assets
(1,424
)
 
(1,496
)
 
(4,273
)
 
(4,489
)

 
 


 
 
 


Net amortization and deferral
808

 
410

 
2,425

 
1,230


 
 


 
 
 


Net periodic pension (income) cost
$
293

 
$
(152
)
 
$
878

 
$
(457
)

 
We do not expect to make any pension contributions during 2015.