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Stock Options and Warrants - Equity Options (Details) - USD ($)
 12 Months Ended
Jul. 19, 2017
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of Shares, Granted 15,000        
Stock Warrants          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of Shares, Outstanding and exercisable   398,156 348,480 333,693  
Number of Shares, Granted   349,508 349,509 14,787  
Number of Shares, Exercised   347,222 0 0  
Number of shares, Forfeited   0 0 0  
Number of Shares, Outstanding and exercisable   22,218 398,156 348,480 333,693
Weighted Average Exercise Price per share, Outstanding and exercisable (dollars per share)   $ 18.20 $ 96.00 $ 98.60  
Weighted Average Exercise Price per share, Granted (dollars per share)   3.00 12.20 37.40  
Weighted Average Exercise Price per share, Exercised (dollars per share)   3.00 0 0  
Weighted Average Exercise Price per share, Forfeited (dollars per share)   0 0 0  
Weighted Average Exercise Price per share, Outstanding and exercisable (dollars per share)   $ 30.82 $ 18.20 $ 96.00 $ 98.60
Weighted Average Remaining Contractual Term (years), Granted   0 years 0 years 0 years  
Weighted Average Remaining Contractual Term (years), Exercised   0 years 0 years 0 years  
Weighted Average Remaining Contractual Term (years), Canceled   0 years 0 years 0 years  
Weighted Average Remaining Contractual Term (years), Outstanding and exercisable   2 years 3 months 11 days 4 years 8 months 9 days 6 months 11 days 1 year 4 months 10 days
Weighted Average Remaining Contractual Term (years), Exercisable   0 years 0 years 0 years  
Aggregate Intrinsic Value, Outstanding (in dollars)   $ 4,533 $ 0 $ 0 $ 0
Aggregate Intrinsic Value, Granted (in dollars)   0 0 0  
Aggregate Intrinsic Value, Exercised (in dollars)   0 0 0  
Aggregate Intrinsic Value, Cancelled (in dollars)   $ 0 $ 0 $ 0  
Equity Option          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of Shares, Outstanding and exercisable   5,000 0    
Number of Shares, Granted   0 15,000    
Number of Shares, Exercised   0 0    
Number of shares, Forfeited   0 10,000    
Number of shares, Canceled   0 0    
Number of Shares, Outstanding and exercisable   5,000 5,000 0  
Weighted Average Exercise Price per share, Outstanding and exercisable (dollars per share)   $ 10.00 $ 0    
Weighted Average Exercise Price per share, Granted (dollars per share)   0.00 50    
Weighted Average Exercise Price per share, Exercised (dollars per share)   0 0    
Weighted Average Exercise Price per share, Forfeited (dollars per share)   0.00 50    
Weighted Average Exercise Price per share, Canceled (dollars per share)   0 0    
Weighted Average Exercise Price per share, Outstanding and exercisable (dollars per share)   $ 10.00 $ 10.00 $ 0  
Weighted Average Remaining Contractual Term (years), Granted   0 years 0 years    
Weighted Average Remaining Contractual Term (years), Exercised   0 years 0 years    
Weighted Average Remaining Contractual Term (years), Forfeited   0 years 0 years    
Weighted Average Remaining Contractual Term (years), Canceled   0 years 0 years    
Weighted Average Remaining Contractual Term (years), Outstanding and exercisable   1 year 1 month 28 days 2 years 1 month 28 days 0 years  
Weighted Average Remaining Contractual Term (years), Exercisable   0 years 0 years    
Aggregate Intrinsic Value, Outstanding (in dollars)   $ 0 $ 0 $ 0  
Aggregate Intrinsic Value, Granted (in dollars)   0 0    
Aggregate Intrinsic Value, Exercised (in dollars)   0 0    
Aggregate Intrinsic Value, Forfeited (in dollars)   0 0    
Aggregate Intrinsic Value, Cancelled (in dollars)   $ 0 $ 0