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Inventories (Tables)
3 Months Ended
Mar. 31, 2017
Inventory Disclosure [Abstract]  
Summary of Inventories

Inventories were as follows (in thousands):

 

     March 31, 2017      December 31, 2016  

Raw materials

   $ 18,612      $ 18,648  

Work-in-process

     3,800        3,361  

Finished goods

     5,017        5,127  
  

 

 

    

 

 

 

Net balance

   $ 27,429      $ 27,136