Quarterly report pursuant to Section 13 or 15(d)

Warrants and Derivative Liabilities (Details 2)

v3.20.2
Warrants and Derivative Liabilities (Details 2) - Pricing Model
Sep. 30, 2020
Percent
$ / shares
Dividend yield | Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 0
Dividend yield | Pre-funded Warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 0
Dividend yield | Placement agent warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 0
Measurement Input, Price Volatility [Member] | Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 91.64
Measurement Input, Price Volatility [Member] | Pre-funded Warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 93.86
Measurement Input, Price Volatility [Member] | Placement agent warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 91.64
Risk-free interest rate | Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 0.19
Risk-free interest rate | Pre-funded Warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 0.52
Risk-free interest rate | Placement agent warrants  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 0.19
Expected term (years) | Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Expected Term 5 years
Expected term (years) | Pre-funded Warrants  
Class of Warrant or Right [Line Items]  
Expected Term 10 years
Expected term (years) | Placement agent warrants  
Class of Warrant or Right [Line Items]  
Expected Term 4 years 11 months 26 days
Weighted-average fair value of warrants | Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Underlying common stock price | $ / shares $ 0.05
Weighted-average fair value of warrants | Pre-funded Warrants  
Class of Warrant or Right [Line Items]  
Underlying common stock price | $ / shares 0.05
Weighted-average fair value of warrants | Placement agent warrants  
Class of Warrant or Right [Line Items]  
Underlying common stock price | $ / shares $ 0.05