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Stock Warrants and Options - Stock Warrants (Details) - Stock Warrants - USD ($)
9 Months Ended 12 Months Ended
Mar. 31, 2021
Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares, Outstanding and exercisable 22,218  
Number of Shares, Granted 1,716  
Number of Shares, Expired 14,788  
Number of Shares, Outstanding and exercisable 9,146 22,218
Weighted Average Exercise Price per share, Outstanding and exercisable (dollars per share) $ 30.82  
Weighted Average Exercise Price per share, Granted (dollars per share) 5.36  
Weighted Average Exercise Price per share, Expired (dollars per share) 39.16  
Weighted Average Exercise Price per share, Outstanding and exercisable (dollars per share) $ 12.34 $ 30.82
Weighted Average Remaining Contractual Term (years), Granted 0 years  
Weighted Average Remaining Contractual Term (years), Expired 0 years  
Weighted Average Remaining Contractual Term (years), Outstanding and exercisable 2 years 2 years 3 months 11 days
Aggregate Intrinsic Value, Outstanding and exercisable (in dollars) $ 1,497 $ 4,533
Aggregate Intrinsic Value, Granted (in dollars) 0  
Aggregate Intrinsic Value, Expired (in dollars) $ 0