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Warrants and Derivative Liabilities (Details 1) - Black-Scholes option pricing model | Dec. 31, 2020 $ / shares | Dec. 31, 2019 $ / shares
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2020 Common Stock Warrants | Dividend yield |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 0 |
2020 Common Stock Warrants | Volatility factor |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 91.64 |
2020 Common Stock Warrants | Risk-free interest rate |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 0.19 |
2020 Common Stock Warrants | Expected term (years) |  |
Class of Warrant or Right [Line Items] |  |
Expected Term | 5 years |
2020 Common Stock Warrants | Underlying common stock price |  |
Class of Warrant or Right [Line Items] |  |
Underlying common stock price | $ 0.05 |
Pre-funded Warrants | Dividend yield |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 0 |
Pre-funded Warrants | Volatility factor |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 93.86 |
Pre-funded Warrants | Risk-free interest rate |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 0.52 |
Pre-funded Warrants | Expected term (years) |  |
Class of Warrant or Right [Line Items] |  |
Expected Term | 10 years |
Pre-funded Warrants | Underlying common stock price |  |
Class of Warrant or Right [Line Items] |  |
Underlying common stock price | $ 0.05 |
Placement agent warrants | Dividend yield |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 0 |
Placement agent warrants | Volatility factor |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 91.64 |
Placement agent warrants | Risk-free interest rate |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) | 0.19 |
Placement agent warrants | Expected term (years) |  |
Class of Warrant or Right [Line Items] |  |
Expected Term | 4 years 11 months 26 days |
Placement agent warrants | Underlying common stock price |  |
Class of Warrant or Right [Line Items] |  |
Underlying common stock price | $ 0.05 |
2019 Common Stock Warrants |  |
Class of Warrant or Right [Line Items] |  |
Underlying common stock price |  | $ 0.22
2019 Common Stock Warrants | Dividend yield |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) |  | 0
2019 Common Stock Warrants | Volatility factor |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) |  | 93.08
2019 Common Stock Warrants | Risk-free interest rate |  |
Class of Warrant or Right [Line Items] |  |
Warrants and rights outstanding measurement input (in percent) |  | 1.62
2019 Common Stock Warrants | Expected term (years) |  |
Class of Warrant or Right [Line Items] |  |
Expected Term |  | 5 years

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