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Property & Equipment, Net (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Property and Equipment, Net (Textual)        
Depreciation expenses $ 9,000 $ 3,000 $ 19,000 $ 6,000