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4. Inventories, net (Tables)
3 Months Ended
Mar. 31, 2016
Inventories Net Tables  
Components of inventory
   

March 31,

2016

   

December 31,

2015

 
Finished goods   $ 4,373     $ 4,029  
Work in process     8,810       8,497  
Raw materials     3,841       3,756  
    $ 17,024     $ 16,282