Annual report pursuant to Section 13 and 15(d)

Warrants and Derivative Liabilities (Details 5)

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Warrants and Derivative Liabilities (Details 5) - Black Scholes Merton Option Pricing Model - Series B Warrant Liability
Dec. 31, 2019
$ / shares
Class of Warrant or Right [Line Items]  
Underlying common stock price $ 0.13
Dividend yield  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input (in percent) 0
Volatility factor  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input (in percent) 79.2
Risk-free interest rate  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input (in percent) 1.60
Expected term (years)  
Class of Warrant or Right [Line Items]  
Expected Term 7 months 20 days