Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Schedule of Fair Value of Warrants Classified as Liabilities (Details)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2021
USD ($)
$ / shares
Dec. 31, 2020
USD ($)
$ / shares
October 2013 Warrants [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Strike price $ 15.00 $ 15.00
Value $ 0.19 $ 0.36
Aggregate value | $ $ 5,031 $ 9,406
October 2013 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value assumptions, percentage 0.00 0.00
October 2013 Warrants [Member] | Measurement Input, Expected Term [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Warrant Expected term (years) 2 years 1 month 6 days 2 years 9 months 18 days
October 2013 Warrants [Member] | Measurement Input, Price Volatility [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value assumptions, percentage 130.84 119.18
October 2013 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value assumptions, percentage 0.09 0.16
January 2014 Warrants [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Strike price $ 15.00 $ 15.00
Value $ 0.22 $ 0.38
Aggregate value | $ $ 28,969 $ 51,151
January 2014 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value assumptions, percentage 0.00 0.00
January 2014 Warrants [Member] | Measurement Input, Expected Term [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Warrant Expected term (years) 2 years 3 months 18 days 3 years
January 2014 Warrants [Member] | Measurement Input, Price Volatility [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value assumptions, percentage 127.99 116.65
January 2014 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value assumptions, percentage 0.11 0.18