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

Inventories were as follows (in thousands):

 

     June 30, 2015      December 31, 2014  

Raw materials

   $ 17,818      $ 18,252  

Work-in-process

     2,480        3,339  

Finished goods

     5,164        4,737  
  

 

 

    

 

 

 

Net balance

   $ 25,462      $ 26,328