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Net Loss Per Common Share (Details) - shares
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Antidilutive securities 28,622,727 21,954,971
Liability Warrants    
Antidilutive securities 240,755 240,755
Equity-Based Warrants    
Antidilutive securities 23,799,177 16,218,908
Stock Options    
Antidilutive securities 765,937 1,556
Employee Unvested Restricted Stock    
Antidilutive securities 3,816,858 2,342,604
Convertible Preferred Stock    
Antidilutive securities 0 3,151,148