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4. Inventories, net (Tables)
3 Months Ended
Mar. 31, 2017
Inventories Net Tables  
Components of inventory
   

March 31,

2017

   

December 31,

2016

 
Finished goods   $ 3,553     $ 3,216  
Work in process     6,778       6,612  
Raw materials     4,420       4,171  
    $ 14,751     $ 13,999