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NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCK (Details) - USD ($)
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCK    
Net loss $ (8,600,000) $ (6,592,000)
Basic loss attributable to common stock (8,600,000) (6,592,000)
Diluted loss attributable to common stock $ (8,600,000) $ (6,592,000)
Weighted average common shares outstanding:    
Basic 21,629,817 18,021,366
Diluted 21,629,817 18,021,366
Basic loss per share attributable to common stock $ (0.40) $ (0.37)
Diluted loss attributable to a share of common stock $ (0.40) $ (0.37)