Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of weighted average assumptions used to value stock-based compensation awards (Details)

v3.21.2
Stock-Based Compensation - Schedule of weighted average assumptions used to value stock-based compensation awards (Details) - MIUs
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Holding period 2 years 2 years
Volatility 45.00% 45.00%
Discount for lack of marketability 28.00% 28.00%
Risk-free rate 1.60% 1.60%