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Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
May 31, 2019
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
May 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted (in shares)   0 0    
Granted (in usd per share)   $ 0      
Outstanding at March 31, 2022   4 years 3 months 18 days   4 years  
Vested in period, value   $ 0.2 $ 9.7    
Unrecognized compensation cost related to nonvested stock option recognized over weighted average period (in years)   2 months 12 days      
Non-vested restricted stock units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total unrecognized compensation cost related to unvested restricted stock units   $ 79.1      
Weighted average remaining vesting period (in years)   1 year 10 months 24 days      
2017 Equity Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares available to be issued (in shares)   3,749,501      
Vesting, consecutive days (in days) 90 days        
Vesting, change in control period (in years) 5 years        
2017 Equity Incentive Plan | Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted (in shares) 700,000        
Granted (in usd per share) $ 33.98        
Share price (in usd per share) $ 84.63        
Value of award at grant date $ 9.5        
Outstanding at March 31, 2022 2 years 7 months 6 days        
2017 Equity Incentive Plan | Class A Common Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares available to be issued (in shares)   7,186,749     6,421,442
2007 Stock Option Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares available to be issued (in shares)         421,442
Number of shares available for grants (in shares)         0
2019 CEO Grant | Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Recognition of stock-based compensation expense accelerated   $ 3.3