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Short-Term Investments (Details) - USD ($)
6 Months Ended 12 Months Ended
Sep. 30, 2017
Mar. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]    
Investment Securities Held-to-Maturity, Amortized Cost $ 1,997,792  
Investment Securities Held-to-Maturity, Unrealized Gains  
Investment Securities Held-to-Maturity, Unrealized Losses  
Estimated fair value 1,997,792  
Corporate debt securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Investment Securities Held-to-Maturity, Amortized Cost 1,997,792
Investment Securities Held-to-Maturity, Unrealized Gains
Investment Securities Held-to-Maturity, Unrealized Losses
Estimated fair value 1,997,792
Other debt securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Investment Securities Held-to-Maturity, Amortized Cost
Investment Securities Held-to-Maturity, Unrealized Gains
Investment Securities Held-to-Maturity, Unrealized Losses
Estimated fair value