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Inventories (Tables)
6 Months Ended
Jun. 30, 2015
Inventory Disclosure [Abstract]  
Summary of Inventories

Inventories are comprised of the following:

 

     June 30,
2015
     December 31,
2014
 

Raw materials

     37,104       $ 35,191   

Work in process

     20,470         21,883   

Finished goods

     30,354         34,395   
  

 

 

    

 

 

 
     87,928       $ 91,469