Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Fair Value Measurements (Details)

v3.21.1
Fair Value - Fair Value Measurements (Details)
3 Months Ended
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2020
USD ($)
Liabilities          
Warrant liabilities $ 229,442       $ 950,151
Change in fair value of the warrant liabilities          
Fair value as of September 30 320,039 $ 950,151 $ 1,190,477 $ 496,343  
Change in fair value (90,597) (630,112) (69,944) 694,134  
Fair value at the end $ 229,442 $ 320,039 $ 1,120,533 $ 1,190,477  
Remaining contractual term (years) | Minimum          
Liabilities          
Warrants and Rights Outstanding, Term 8 months 11 days   1 year 8 months 11 days    
Remaining contractual term (years) | Maximum          
Liabilities          
Warrants and Rights Outstanding, Term 1 year   2 years    
Common stock price volatility | Minimum          
Liabilities          
Warrants and Rights Outstanding, Measurement Input 69.5   89.6    
Common stock price volatility | Maximum          
Liabilities          
Warrants and Rights Outstanding, Measurement Input 71.4   92.5    
Risk-free interest rate          
Liabilities          
Warrants and Rights Outstanding, Measurement Input 0.07   0.23    
Fair Value Measurements Level 3 [Member]          
Liabilities          
Warrant liabilities $ 229,442       $ 950,151