Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Summary of Assumptions Used for Valuation of Fair Value Liabilities (Details)

v3.20.2
Fair Value Measurement - Summary of Assumptions Used for Valuation of Fair Value Liabilities (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Risk Free Interest Rate [Member] | Minimum [Member]        
Fair value assumptions, measurement input, percentages 0.16% 1.88% 0.16% 1.88%
Risk Free Interest Rate [Member] | Maximum [Member]        
Fair value assumptions, measurement input, percentages 1.69% 2.45% 1.69% 2.63%
Contractual Term (Years) [Member] | Minimum [Member]        
Fair value assumptions, measurement input, term 1 year 1 year 1 year 1 year
Contractual Term (Years) [Member] | Maximum [Member]        
Fair value assumptions, measurement input, term 8 years 10 years 8 years 10 years
Expected Volatility [Member] | Minimum [Member]        
Fair value assumptions, measurement input, percentages 93.00% 106.00% 78.00% 106.00%
Expected Volatility [Member] | Maximum [Member]        
Fair value assumptions, measurement input, percentages 138.00% 139.00% 138.00% 140.00%
Expected Dividend Yield [Member]        
Fair value assumptions, measurement input, percentages 0.00% 0.00% 0.00% 0.00%