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2. Inventories (Tables)
9 Months Ended
Sep. 30, 2017
Inventory, Net [Abstract]  
Schedule of Inventories
   

September 30,

2017

   

December 31,

2016

 
Raw materials   $ 2,306     $ 1,044  
Work-in-progress     1,946       1,360  
Finished goods     1,490       837  
Total inventories   $ 5,742     $ 3,241