Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Schedule of Assumptions Used in Estimating Fair Value (Details)

v3.21.1
Fair Value Measurements - Schedule of Assumptions Used in Estimating Fair Value (Details) - Common Stock Warrants [Member] - Black-Scholes-Merton Valuation Model [Member]
Dec. 31, 2020
Dec. 31, 2019
Weighted-Average Risk-Free Interest Rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, percentages   1.62
Weighted-Average Risk-Free Interest Rate [Member] | Minimum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, percentages 0.09  
Weighted-Average Risk-Free Interest Rate [Member] | Maximum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, percentages 0.27  
Weighted-Average Expected Life (in years) [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, term   3 years 4 months 24 days
Weighted-Average Expected Life (in years) [Member] | Minimum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, term 7 months 17 days  
Weighted-Average Expected Life (in years) [Member] | Maximum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, term 4 years 1 month 6 days  
Expected Dividend Yield [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, percentages 0.00 0.00
Weighted Average Expected Volatility [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, percentages   64
Weighted Average Expected Volatility [Member] | Minimum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, percentages 138.3  
Weighted Average Expected Volatility [Member] | Maximum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value assumptions, measurement input, percentages 175.6