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INVENTORY (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
INVENTORY    
Raw materials $ 14,271 $ 16,445
Work in process 17,204 12,423
Finished goods 13,342 9,543
Total inventory 44,817 38,411
Finished goods inventory located at third-party warehouse and shipping service provider $ 3,200 $ 3,000