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Derivative Financial Instruments and Fair Value Measurements - Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques (Details)

v3.19.1
Derivative Financial Instruments and Fair Value Measurements - Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques (Details)
9 Months Ended 12 Months Ended
Mar. 31, 2019
Jun. 30, 2018
Jun. 30, 2017
Volatility [Member] | Minimum [Member]      
Fair value assumptions, measurement input, percentages 348.33%    
Volatility [Member] | Maximum [Member]      
Fair value assumptions, measurement input, percentages 409.24%    
Volatility [Member] | Initial Valuations [Member]      
Fair value assumptions, measurement input, percentages 294.92%    
Volatility [Member] | Convertible Debt [Member] | Minimum [Member]      
Fair value assumptions, measurement input, percentages   191.00% 66.00%
Volatility [Member] | Convertible Debt [Member] | Maximum [Member]      
Fair value assumptions, measurement input, percentages   221.00% 175.00%
Volatility [Member] | Convertible Debt [Member] | Initial Valuations [Member] | Minimum [Member]      
Fair value assumptions, measurement input, percentages   139.00%  
Volatility [Member] | Convertible Debt [Member] | Initial Valuations [Member] | Maximum [Member]      
Fair value assumptions, measurement input, percentages   198.00%  
Expected Remaining Term [Member] | Minimum [Member]      
Fair value assumptions, measurement input, term 4 months 9 days    
Expected Remaining Term [Member] | Maximum [Member]      
Fair value assumptions, measurement input, term 7 months 28 days    
Expected Remaining Term [Member] | Initial Valuations [Member]      
Fair value assumptions, measurement input, term 1 year    
Expected Remaining Term [Member] | Convertible Debt [Member] | Minimum [Member]      
Fair value assumptions, measurement input, term   6 months 21 days 2 months 16 days
Expected Remaining Term [Member] | Convertible Debt [Member] | Maximum [Member]      
Fair value assumptions, measurement input, term   1 year 1 month 6 days 1 year 7 months 17 days
Expected Remaining Term [Member] | Convertible Debt [Member] | Initial Valuations [Member] | Minimum [Member]      
Fair value assumptions, measurement input, term   1 year  
Expected Remaining Term [Member] | Convertible Debt [Member] | Initial Valuations [Member] | Maximum [Member]      
Fair value assumptions, measurement input, term   2 years  
Risk-Free Interest Rate [Member] | Minimum [Member]      
Fair value assumptions, measurement input, percentages 2.44%    
Risk-Free Interest Rate [Member] | Maximum [Member]      
Fair value assumptions, measurement input, percentages 2.56%    
Risk-Free Interest Rate [Member] | Initial Valuations [Member]      
Fair value assumptions, measurement input, percentages 2.47%    
Risk-Free Interest Rate [Member] | Convertible Debt [Member] | Minimum [Member]      
Fair value assumptions, measurement input, percentages   2.11% 1.03%
Risk-Free Interest Rate [Member] | Convertible Debt [Member] | Maximum [Member]      
Fair value assumptions, measurement input, percentages   2.33% 1.24%
Risk-Free Interest Rate [Member] | Convertible Debt [Member] | Initial Valuations [Member] | Minimum [Member]      
Fair value assumptions, measurement input, percentages   1.33%  
Risk-Free Interest Rate [Member] | Convertible Debt [Member] | Initial Valuations [Member] | Maximum [Member]      
Fair value assumptions, measurement input, percentages   2.31%  
Expected Dividend Yield [Member]      
Fair value assumptions, measurement input, percentages    
Expected Dividend Yield [Member] | Initial Valuations [Member]      
Fair value assumptions, measurement input, percentages    
Expected Dividend Yield [Member] | Convertible Debt [Member] | Minimum [Member]      
Fair value assumptions, measurement input, percentages  
Expected Dividend Yield [Member] | Convertible Debt [Member] | Initial Valuations [Member] | Minimum [Member]      
Fair value assumptions, measurement input, percentages    
Warrants [Member] | Volatility [Member]      
Fair value assumptions, measurement input, percentages   110.00% 137.00%
Warrants [Member] | Expected Remaining Term [Member]      
Fair value assumptions, measurement input, term   2 months 30 days 1 year 2 months 30 days
Warrants [Member] | Risk-Free Interest Rate [Member]      
Fair value assumptions, measurement input, percentages   1.93% 1.24%
Warrants [Member] | Expected Dividend Yield [Member]      
Fair value assumptions, measurement input, percentages