Quarterly report pursuant to Section 13 or 15(d)

Warrants and Derivative Liabilities - Schedule of Warrants Vested and Outstanding (Details)

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Warrants and Derivative Liabilities - Schedule of Warrants Vested and Outstanding (Details)
 3 Months Ended
Mar. 31, 2023
$ / shares
shares
Class of Warrant or Right [Line Items]  
Number of Warrants Vested and Outstanding (in shares) 177,093,146
Pre 2015 Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 1.00
Term (Years) 10 years
Number of Warrants Vested and Outstanding (in shares) 1,110,000
2015 Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 5.00
Term (Years) 10 years
Number of Warrants Vested and Outstanding (in shares) 100,000
2016 Common Stock Warrants to Service Providers  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 1.15
Term (Years) 10 years
Number of Warrants Vested and Outstanding (in shares) 40,000
2019 Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.35
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 8,000,000
2020 Common Stock Warrants to Placement Agent  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.08
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 8,166,667
2021 Inducement Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.15
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 21,166,667
2021 Inducement Warrants to Placement Agent  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.19
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 1,481,667
2021 Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.09
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 77,777,779
2021 Common Stock Warrants to Placement Agent  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.11
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 5,444,445
2022 Common Stock Warrants to Service Provider  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.04
Term (Years) 2 years
Number of Warrants Vested and Outstanding (in shares) 2,000,000
November 2019 EHT Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.29
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 8,552,630
November 2019 EHT Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.15
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 945,750
December 2019 EHT Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.15
Term (Years) 5 years
Number of Warrants Vested and Outstanding (in shares) 20,172,409
February 2020 EHT Common Stock Warrants  
Class of Warrant or Right [Line Items]  
Exercise price (in dollars per share) | $ / shares $ 0.10
Term (Years) 3 years
Number of Warrants Vested and Outstanding (in shares) 22,135,132