v3.25.2
Employee Benefit Plans - Additional Information (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Feb. 03, 2025
trading_day
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
Dec. 31, 2024
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Total shares of common stock reserved (in shares) | shares   54,000,000.0   54,000,000.0   47,900,000
Compensation cost related to the nonvested awards not yet recognized   $ 25,900   $ 25,900    
Weighted average period for recognition of compensation cost       3 years 3 months 18 days    
Employer discretionary contribution amount   300 $ 500 $ 1,200 $ 1,400  
Stock-based compensation expense   23,800 30,000 48,000 57,900  
Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Stock-based compensation expense       4,100    
Internal-use software and website development            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Cumulative stock-based compensation expense   $ 2,000 $ 2,300 $ 3,700 $ 4,100  
Employee Stock Purchase Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Total shares of common stock reserved (in shares) | shares   6,200,000   6,200,000    
Compensation cost related to the nonvested awards not yet recognized   $ 3,900   $ 3,900    
Weighted average period for recognition of compensation cost       10 months 24 days    
2021 Employee Stock Purchase Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Total shares of common stock reserved (in shares) | shares   14,700,000   14,700,000    
Stock Options            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share based compensation, expiration period       10 years    
Vesting period       4 years    
Restricted Stock Units            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Vesting period       4 years    
Compensation cost related to the nonvested awards not yet recognized   $ 170,100   $ 170,100    
Weighted average period for recognition of compensation cost       2 years 7 months 6 days    
Number of shares, granted (in shares) | shares       9,100,000    
Weighted-average grant date fair value, unvested ending balance (in dollars per share) | $ / shares   $ 10.03   $ 10.03   $ 12.82
Restricted Stock Units | Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Number of shares, granted (in shares) | shares 1,900,000          
Restricted Stock Units | Share-Based Payment Arrangement, Tranche One            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting rights percentage   25.00%        
Cliff vesting period       1 year    
Restricted Stock Units | Share-Based Payment Arrangement, Tranche One | Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting rights percentage 25.00%          
Restricted Stock Units | Share-Based Payment Arrangement, Tranche Two            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting rights percentage   6.25%        
Restricted Stock Units | Share-Based Payment Arrangement, Tranche Two | Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting rights percentage 6.25%          
Restricted Stock Units | Share-Based Payment Arrangement, Tranche Three            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting rights percentage   6.25%        
Performance stock units (“PSUs”)            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Compensation cost related to the nonvested awards not yet recognized   $ 3,900   $ 3,900    
Weighted average period for recognition of compensation cost       3 years 7 months 6 days    
Number of shares, granted (in shares) | shares       400,000    
Revenue target amount   $ 200   $ 200    
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Awards Expected To Vest, Percentage   83.85%   83.85%    
Weighted-average grant date fair value, unvested ending balance (in dollars per share) | $ / shares   $ 9.34   $ 9.34   $ 14.36
Performance stock units (“PSUs”) | Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Vesting period 4 years          
Number of shares, granted (in shares) | shares 1,400,000          
Exercise price (in usd per share) | $ / shares $ 7.81          
Trading period (in days) | trading_day 60          
Market-based vesting condition, stock price (in usd per share) | $ / shares $ 12.81          
Performance stock units (“PSUs”) | Minimum            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award performance targets (percent)   50.00%   50.00%    
Performance stock units (“PSUs”) | Maximum            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award performance targets (percent)   150.00%   150.00%    
Performance stock units (“PSUs”) | Share-Based Payment Arrangement, Tranche One            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting rights percentage   25.00%        
Performance stock units (“PSUs”) | Share-Based Payment Arrangement, Tranche One | Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting rights percentage 25.00%          
Performance stock units (“PSUs”) | Share-Based Payment Arrangement, Tranche Two            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting rights percentage   6.25%        
Cliff vesting period   3 years        
Time-Based Stock Options | Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Number of shares, granted (in shares) | shares 3,700,000          
Exercise price (in usd per share) | $ / shares $ 7.81          
Performance-Based Stock Options | Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Cliff vesting period 1 year 9 months 18 days          
Weighted-average grant date fair value, unvested ending balance (in dollars per share) | $ / shares $ 4.91          
Service-Based Stock Options | Chief Executive Officer            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Weighted-average grant date fair value, unvested ending balance (in dollars per share) | $ / shares $ 4.47