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

Inventories were as follows (in thousands):

 

     September 30, 2016      December 31, 2015  

Raw materials

   $ 19,652      $ 16,257  

Work-in-process

     2,991         2,879  

Finished goods

     3,919        4,306  
  

 

 

    

 

 

 

Net balance

   $ 26,562      $ 23,442