Annual report pursuant to Section 13 and 15(d)

Warrants - Schedule of Fair Value of Warrants Classified as Liabilities (Details)

v3.20.4
Warrants - Schedule of Fair Value of Warrants Classified as Liabilities (Details)
12 Months Ended
Dec. 31, 2020
$ / shares
Dec. 31, 2019
$ / shares
October 2013 Warrants [Member]    
Strike price $ 15.00 $ 15.00
October 2013 Warrants [Member] | Expected Dividend Yield [Member]    
Fair value assumptions, percentage 0.00 0.00
January 2014 Warrants [Member]    
Strike price $ 15.00 $ 15.00
January 2014 Warrants [Member] | Expected Dividend Yield [Member]    
Fair value assumptions, percentage 0.00 0.00
January 2014 Warrants [Member] | Contractual Term (Years) [Member]    
Warrant Expected term (years) 3 years 4 years
January 2014 Warrants [Member] | Cumulative Volatility [Member]    
Fair value assumptions, percentage 116.65 90.58
January 2014 Warrants [Member] | Risk-Free Rate [Member]    
Fair value assumptions, percentage 0.18 1.68
October 2013 Warrants [Member] | Contractual Term (Years) [Member]    
Warrant Expected term (years) 2 years 9 months 18 days 3 years 9 months 18 days
October 2013 Warrants [Member] | Cumulative Volatility [Member]    
Fair value assumptions, percentage 119.18 89.59
October 2013 Warrants [Member] | Risk-Free Rate [Member]    
Fair value assumptions, percentage 0.16 1.67