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Warrants and Derivative Liabilities (Details) | 12 Months Ended
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Dec. 31, 2020 $ / shares shares
Class of Warrant or Right [Line Items] |
Number of Warrants Vested and Outstanding | 157,513,335
Pre 2015 Common Stock Warrants |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 1.00
Number of Warrants Vested and Outstanding | 1,110,000
Pre 2015 Common Stock Warrants | Minimum |
Class of Warrant or Right [Line Items] |
Term (Years) | 6 years
Pre 2015 Common Stock Warrants | Maximum |
Class of Warrant or Right [Line Items] |
Term (Years) | 10 years
2015 Common Stock Warrants |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 5.00
Number of Warrants Vested and Outstanding | 100,000
2015 Common Stock Warrants | Minimum |
Class of Warrant or Right [Line Items] |
Term (Years) | 5 years
2015 Common Stock Warrants | Maximum |
Class of Warrant or Right [Line Items] |
Term (Years) | 10 years
2016 Common Stock Warrants to Service Providers |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 1.15
Term (Years) | 10 years
Number of Warrants Vested and Outstanding | 40,000
2016 Series C Common Stock Warrants to Placement Agent |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.40
Term (Years) | 5 years
Number of Warrants Vested and Outstanding | 125,000
2017 Series D Common Stock Warrants to Placement Agent |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.25
Term (Years) | 5 years
Number of Warrants Vested and Outstanding | 480,000
2017 Common Stock Warrants to Service Provider |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.41
Term (Years) | 5 years
Number of Warrants Vested and Outstanding | 125,000
2018 Emerald Financing Warrants |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.10
Term (Years) | 5 years
Number of Warrants Vested and Outstanding | 3,400,000
Emerald Multi-Draw Credit Agreement Warrants |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.50
Term (Years) | 5 years
Number of Warrants Vested and Outstanding | 7,500,000
2019 Common Stock Warrants |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.35
Term (Years) | 5 years
Number of Warrants Vested and Outstanding | 8,000,000
2020 Common Stock Warrants |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.06
Term (Years) | 5 years
Number of Warrants Vested and Outstanding | 116,666,668
2020 Common Stock Warrants to Placement Agent |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.075
Term (Years) | 4 years 11 months 26 days
Number of Warrants Vested and Outstanding | 8,166,667
2020 Pre-Funded Warrants |
Class of Warrant or Right [Line Items] |
Exercise Price | $ / shares | $ 0.001
Number of Warrants Vested and Outstanding | 11,800,000

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