Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Option pricing model (Details)

v3.22.2
Stockholders' Equity - Option pricing model (Details)
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Stockholders' Equity    
Risk-free interest rate, Minimum   1.04%
Risk-free interest rate 1.30%  
Risk-free interest rate, Maximum   1.50%
Expected dividend yield 0.00% 0.00%
Expected term in years 10 years 10 years
Expected volatility, Minimum   100.65%
Expected volatility 100.65%  
Expected volatility, Maximum   102.71%