v3.26.3
Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
May 12, 2026
Apr. 30, 2021
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Jan. 31, 2025
Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share-based payment arrangement, expense     $ 3,165     $ 2,084 $ 9,455 $ 7,081      
Common stock, authorized     500,000,000       500,000,000   500,000,000    
Outstanding Options                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share-based payment arrangement, expense     $ 139     184 $ 412 692      
Vesting of RSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share-based payment arrangement, expense     2,376     1,897 7,580 6,376      
Unrecognized compensation expense     14,214       14,214        
Vesting Of PSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share-based payment arrangement, expense     656     0 1,443 0      
Unrecognized compensation expense     1,141       $ 1,141        
Unrecognized compensation expense period             6 months        
RSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Unrecognized compensation expense period             2 years 7 months 6 days        
Employee Stock Option                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Unrecognized compensation expense     498       $ 498        
Unrecognized compensation expense period             1 year 2 months 12 days        
2018 Stock Plan                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation arrangement vesting period             4 years        
Amended 2018 Stock Plan                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Number of Options, Granted   0                  
Amended 2018 Stock Plan | RSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation arrangement vesting period   4 years                  
Share-based compensation arrangement, options granted   1,533,000                  
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value   $ 21.55                  
Share-based payment arrangement, expense   $ 33,033                  
2021 Equity Incentive Plan                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Annual additions to the plan       20,000,000              
2021 Equity Incentive Plan | Class A Common Stock                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Annual additions to the plan 20,000,000                    
2021 Equity Incentive Plan | RSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation arrangement vesting period 4 years                    
2021 Equity Incentive Plan | PSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share-based compensation arrangement, options granted       600,000 1,119,000            
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value       $ 1.14 $ 1.72            
Employee Stock Purchase Plan                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share-based payment arrangement, expense     $ (6)     $ 3 $ 20 $ 13      
Annual additions to the plan         1,897,000            
Number of shares available for sale     10,416,000 10,540,000 10,540,000   10,416,000   8,761,000    
Employee Stock Purchase Plan | Class A Common Stock                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation by share based arrangement, quoted market price on purchase date             85.00%        
Shares reserved for future issuance     2,000,000       2,000,000        
Percentage of shares reserved for future issuance             1.00%        
2025 Inducement Equity Incentive Plan | Common Stock                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Shares reserved for future issuance                   6,500,000  
2025 Inducement Equity Incentive Plan | PSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation arrangement vesting period       1 year              
2025 Inducement Equity Incentive Plan | PSUs | Class A Common Stock                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share-based compensation arrangement, options granted       600,000 1,119,000            
Minimum | 2021 Equity Incentive Plan | RSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation arrangement vesting period 1 year                    
Minimum | 2025 Inducement Equity Incentive Plan | PSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation by share based arrangement, quoted market price on purchase date       0.00% 0.00%            
Maximum | 2018 Stock Plan                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation by share based arrangement term             10 years        
Maximum | 2021 Equity Incentive Plan | Class A Common Stock                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Number of shares available for sale 44,400,000                    
Maximum | Employee Stock Purchase Plan | Class A Common Stock                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Shares reserved for future issuance                     2,000,000
Maximum | 2025 Inducement Equity Incentive Plan | PSUs                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Share based compensation by share based arrangement, quoted market price on purchase date       200.00% 200.00%