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2. Inventory
6 Months Ended
Jun. 30, 2015
Inventory Disclosure [Abstract]  
2. Inventory

Inventory consists of the following:

 

    June 30, 2015     December 31, 2014  
Raw materials   $ 1,318     $ 1,522  
Work-in-progress     1,356       1,453  
Finished goods     2,753       1,516  
Total inventory   $ 5,427     $ 4,491