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RESEARCH COLLABORATION AGREEMENT AND LICENSE AGREEMENT (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2018
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Research Collaboration Agreement and License Agreement (Textual)          
Research and development expenses   $ 756 $ 1,018 $ 2,695 $ 4,292
Harvard License Agreement and Collaboration Agreement [Member]          
Research Collaboration Agreement and License Agreement (Textual)          
Total payment obligation       7,200  
Research and development expenses   $ 175   $ 599  
Research collaboration agreement expire date May 16, 2022     Feb. 28, 2023