Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - Summary of grant date of stock option award (Details)

v3.21.2
Stock Based Compensation - Summary of grant date of stock option award (Details) - $ / shares
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free rate of interest, minimum 0.69% 0.79%
Risk-free rate of interest, maximum 1.24%  
Expected stock price volatility   80.00%
Dividend yield 0.00% 0.00%
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price $ 10.03 $ 2.22
Expected term (years) 5 years 3 months 4 years 8 months 8 days
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price $ 23.41 $ 3.07
Expected term (years) 6 years 6 months 5 years 10 months 24 days