Quarterly report pursuant to Section 13 or 15(d)

Warrants - Fair value measurements and valuation techniques (Details)

v3.21.1
Warrants - Fair value measurements and valuation techniques (Details) - Warrant
Mar. 31, 2021
$ / shares
Dec. 31, 2020
$ / shares
Stock price    
Fair Value Measurement Inputs and Valuation Techniques [Abstract]    
Warrants, measurement input 1.44 1.27
Exercise price    
Fair Value Measurement Inputs and Valuation Techniques [Abstract]    
Warrants, measurement input 0.75 0.75
Expected remaining term | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Abstract]    
Warrants, measurement input 5.50 5.75
Expected remaining term | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Abstract]    
Warrants, measurement input 5.56 5.81
Volatility    
Fair Value Measurement Inputs and Valuation Techniques [Abstract]    
Warrants, measurement input 0.675 0.675
Risk-free interest rate    
Fair Value Measurement Inputs and Valuation Techniques [Abstract]    
Warrants, measurement input 0.011 0.005