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2. Inventory (Tables)
3 Months Ended
Mar. 31, 2015
Schedule of Notes Payable  
Schedule of Inventory
    March 31, 2015     December 31, 2014  
Raw materials   $ 1,262     $ 1,522  
Work-in-progress     1,464       1,453  
Finished goods     1,915       1,516  
Total inventory   $ 4,641     $ 4,491