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2. Inventories
9 Months Ended
Sep. 30, 2016
Inventory Disclosure [Abstract]  
2. Inventories

Inventory consists of the following:

 

    September 30, 2016       December 31, 2015    
Raw materials   $ 1,465     $ 1,219  
Work-in-progress     1,638       1,807  
Finished goods     879       1,778  
Total inventories   $ 3,982     $ 4,804