v3.23.3
STOCK-BASED COMPENSATION - Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jan. 01, 2023
shares
Jan. 01, 2022
Jun. 30, 2021
USD ($)
tranche
day
$ / shares
shares
Sep. 30, 2023
USD ($)
shares
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
shares
Sep. 30, 2022
USD ($)
Dec. 31, 2021
tranche
Jul. 26, 2021
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Granted (in shares)           0      
Aggregate intrinsic value, exercised | $           $ 127,785 $ 129,725    
Unrecognized compensation cost, options | $       $ 2,288   2,288      
Unrecognized compensation cost | $       209,548   209,548      
Closing trading price, specified calendar day | day     60            
Compensation expense | $       25,432 $ 20,488 70,219 53,188    
Stock-based compensation expense | $       $ 25,432 20,488 $ 70,219 53,188    
Stock options outstanding                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized compensation cost, weighted-average period of recognition (in years)           1 year      
Number of options available for grant (in shares)       9,433,000   9,433,000      
RSUs outstanding                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized compensation cost, weighted-average period of recognition (in years)           3 years      
Unrecognized compensation expense, excluding options | $       $ 207,260   $ 207,260      
Equity instruments other than options, grants in period (in shares)           803,000      
Performance Based RSUs                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized compensation expense, excluding options | $       42,527   $ 42,527      
Performance Based RSUs | 1                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Compensation expense | $       $ 6,595 $ 7,572 $ 20,829 $ 23,699    
Performance Based RSUs | Minimum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award service period (in years)     3 years 6 months 29 days            
Performance Based RSUs | Maximum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award service period (in years)     5 years 11 months 1 day            
Performance Based RSUs | Founders                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized compensation expense, excluding options | $     $ 110,817            
Equity instruments other than options, grants in period (in shares)     1,800,000            
Settlement period after vesting (in years)     1 year            
Award vesting percentage (in percent)     25.00%            
Number of tranches | tranche     10            
Award service period (in years)     10 years            
Performance Based RSUs | Founders | Tranche One and Two                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of tranches | tranche               2  
Release of performance stock units (in shares)       180,000          
Shares disbursed to founders in net-share settlement (in shares)       96,000          
Shares withheld for taxes (in shares)       84,000          
Performance Based RSUs | Share-Based Payment Arrangement, Founders                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Weighted average grant date fair value (in usd per share) | $ / shares     $ 61.56            
2021 Plan | Common Class A                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Common stock reserved for future issuance (in shares)                 7,946,000
Share-based compensation, shares outstanding increase, maximum amount (in percent)   5.00%              
Additional shares authorized (in shares) 2,018,000                
Employee Stock Purchase Plan | Common Class A                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Common stock reserved for future issuance (in shares)                 1,119,000
Additional shares authorized (in shares) 319,000                
2011 Equity Incentive Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Vesting period (in years)           4 years      
Share-based compensation, term of award (in years)           10 years      
Granted (in shares)           0