Quarterly report pursuant to Section 13 or 15(d)

Equity-based Compensation - Narrative (Details)

v3.21.2
Equity-based Compensation - Narrative (Details)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Return multiple 3 3 3      
Transition Agreement | Former Executive            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of retained shares (in shares)         261,287  
Number of remaining shares (in shares)         802,634  
Cash consideration | $         $ 1.1  
Termination period       11 months    
Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expiration period     10 years      
RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost | $ $ 8.9 $ 8.9 $ 8.9      
Weighted average period (in years)     4 years      
Vesting period     4 years      
Granted (in shares)     894,902      
Performance-based incentive units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted (in shares)     932,124      
Time-based incentive units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost | $ $ 7.1 $ 7.1 $ 7.1      
Weighted average period (in years)     3 years 1 month 6 days      
Vesting period     4 years      
Granted (in shares)     2,079,367      
2021 Omnibus Incentive Plan | Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares reserved for issuance 4,900,269 4,900,269 4,900,269      
Annual increase of shares authorized for issuance (percent) 1.00%          
Unrecognized compensation cost | $ $ 1.4 $ 1.4 $ 1.4      
Weighted average period (in years)     4 years      
2021 Employee Stock Purchase Plan | Employee Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares reserved for issuance 1,225,067 1,225,067 1,225,067      
Annual increase of shares authorized for issuance (percent) 1.00%          
Percentage on share price issued 85.00%          
2018 Stock and Incentive Compensation Plan | Incentive Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares reserved for issuance           16,475,735
2018 Stock and Incentive Compensation Plan | Time-based incentive units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted (in shares)   0