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INTELLECTUAL PROPERTY LICENSE (Details) - Boston Childrens Hospital Bch License - USD ($)
$ in Thousands
Dec. 31, 2011
Dec. 31, 2016
Dec. 31, 2015
Intellectual Property License      
Useful life 15 years    
Initial license fee paid $ 75    
Capitalized license fees and milestone payments, gross   $ 200 $ 200