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Pension Information (Tables)
6 Months Ended
Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Components of Net Periodic Pension Expense

Net periodic pension expense was as follows:

 

     Three months
ended June 30,
     Six months
ended June 30,
 
     2015     2014      2015     2014  

Service cost

   $ —        $ 94       $ —        $ 170   

Interest cost

     156        201         312        381   

Expected return on plan assets

     (283     (312      (566     (592

Other components

     70        89         140        132   
  

 

 

   

 

 

    

 

 

   

 

 

 

Net periodic pension cost (benefit)

   $ (57   $ 72       $ (114   $ 91