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Inventories (Tables)
6 Months Ended
Jun. 30, 2017
Inventory Disclosure [Abstract]  
Summary of Inventories

Inventories were as follows (in thousands):

 

     June 30, 2017      December 31, 2016  

Raw materials

   $ 21,538    $ 18,648

Work-in-process

     3,431        3,361

Finished goods

     5,545      5,127
  

 

 

    

 

 

 

Net balance

   $  30,514    $ 27,136