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Inventories (Tables)
6 Months Ended
Jun. 30, 2016
Inventory Disclosure [Abstract]  
Summary of Inventories

Inventories were as follows (in thousands):

 

     June 30, 2016      December 31, 2015  

Raw materials

   $  19,303      $  16,257  

Work-in-process

     2,462        2,879  

Finished goods

     4,365         4,306  
  

 

 

    

 

 

 

Net balance

   $  26,130      $  23,442