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Short-Term Investments (Tables)
 12 Months Ended
Mar. 31, 2018
Summary of Investment Holdings [Line Items]  
Schedule of amortized cost and fair value of investment securities held-to-maturity

      Investment Securities Held-to-Maturity        
      Amortized     Unrealized     Unrealized     Estimated  
      Cost     Gains     Losses     fair value  
  March 31, 2018                                
  Corporate debt securities   $ 4,744,328     $      -     $     -     $ 4,744,328  
  Total   $ 4,744,328     $ -     $ -     $ 4,744,328  
                                   
  March 31, 2017                                
  Corporate debt securities   $ -     $ -     $ -     $ -  
  Total   $ -     $ -     $ -     $ -  

Investment securities [Member]  
Summary of Investment Holdings [Line Items]  
Schedule of amortized cost and fair value of investment securities held-to-maturity

  Periods   March 31, 2018     March 31, 2017  
  Due in one year or less   $ 4,744,328     $         -  
  Due after one year through five years     -       -  
  Due after five years through ten years     -       -  
  Due after ten years     -       -  
  Total   $ 4,744,328     $ -