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ORGANIZATION (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
segment
Mar. 31, 2016
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
May 30, 2014
patent
Organization          
Number of reportable segments | segment 1        
Accumulated deficit $ 353,369   $ 343,591    
Net loss 9,778 $ 3,650      
Cash $ 19,847 $ 13,544 $ 22,978 $ 14,581  
CTRM Business          
Organization          
Number of patents and patents applications acquired | patent         250