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Organization and Basis of Presentation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 28, 2019
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Mar. 31, 2019
Organization and Basis of Presentation (Textual)            
Cash and cash equivalents   $ 16,053   $ 16,053   $ 13,704
Net loss   (10,619) $ (10,325) (21,585) $ (21,093)  
Utilized cash in operating activities       (4,766) $ (4,747)  
Working capital deficiency   $ 14,700   $ 14,700    
Stock splits, description       The Company sold 5,000,000 shares of its common stock to certain institutional investors for gross proceeds of $10.5 million.    
Sale of equity, debt or other financial instruments $ 150,000