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2. Inventory
12 Months Ended
Dec. 31, 2014
Inventory Disclosure [Abstract]  
2. Inventory

Inventory consists of the following:

 

    December 31, 2014     December 31, 2013  
Raw materials   $ 1,522     $ 597  
Work-in-progress     1,453       1,724  
Finished goods     1,516       1,777  
Total inventory   $ 4,491     $ 4,098