v3.24.3
STOCK-BASED COMPENSATION - Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jan. 01, 2024
shares
Jul. 26, 2021
shares
Jun. 30, 2021
USD ($)
day
tranche
$ / shares
shares
Sep. 30, 2024
USD ($)
shares
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
shares
Sep. 30, 2023
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (in shares) | shares       0   0  
Aggregate intrinsic value, exercised | $           $ 151,558 $ 127,785
Unrecognized compensation cost, options | $       $ 86   86  
Unrecognized compensation cost | $       237,223   237,223  
Closing trading price, specified calendar day | day     60        
Compensation expense | $       $ 28,959 $ 25,432 $ 80,690 70,219
Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Unrecognized compensation cost, weighted-average period of recognition (in years)           4 months  
Number of options available for grant (in shares) | shares       8,878,000   8,878,000  
Restricted Stock Units (RSUs)              
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 | $       $ 237,137   $ 237,137  
Equity instruments other than options, grants in period (in shares) | shares           635,000  
Performance Based RSUs              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Unrecognized compensation expense, excluding options | $       21,229   $ 21,229  
Compensation expense | $       $ 4,410 $ 6,595 $ 15,507 $ 20,829
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) | 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 | 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) | shares   7,946,000          
Share-based compensation, shares outstanding increase, maximum amount (in percent)   5.00%          
Additional shares authorized (in shares) | shares 2,126,000            
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) | shares   1,119,000          
Share-based compensation, shares outstanding increase, maximum amount (in percent)   1.00%          
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) | shares           0