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Net Loss Per Common Share (Tables)
12 Months Ended
Jun. 30, 2020
Earnings Per Share [Abstract]  
Antidilutive securities excluded from the computation of earnings per share
      Year Ended June 30,  
      2020     2019  
Warrants to purchase common stock - liability classified (Note 15)     240,755       240,755  
Warrant to purchase common stock - equity classified (Note 15)     22,884,538       16,238,657  
Employee stock options (Note 14)     765,937       1,607  
Employee unvested restricted stock (Note 14)     4,186,056       2,551,024  
Convertible preferred stock (Note 13)     -       3,594,981  
      28,077,286       22,627,024