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2. Inventory
12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
2. Inventory

Inventory consists of the following:

 

    December 31, 2015     December 31, 2014  
Raw materials   $ 1,219     $ 1,522  
Work-in-progress     1,807       1,453  
Finished goods     1,778       1,516  
Total inventory   $ 4,804     $ 4,491