v3.26.1
Equity Incentive Plans and Stock-Based Compensation Expense - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Jan. 30, 2025
Dec. 31, 2025
Sep. 30, 2025
Dec. 31, 2024
Aug. 31, 2019
Nov. 30, 2018
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2018
Jan. 29, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Common stock shares reserved   15,538,422   38,696,735     15,538,422 38,696,735      
Unrecognized compensation cost   $ 28,400,000   $ 30,000,000     $ 28,400,000 $ 30,000,000      
Unrecognized compensation cost expected to be recognized over a weighted-average period             3 years 18 days 3 years 1 month 9 days      
Repricing of outstanding stock options       3,415,997              
Exercise price       $ 10.42       $ 10.42      
Options to purchase   51,861   51,861              
Incremental share based compensation expense       $ 700,000              
Incremental share based compensation expense recognized for vested stock options       $ 300,000     $ 200,000        
Incremental share based compensation expense over the remainder of the vesting periods for unvested stock options             200,000        
Stock-based compensation expense             $ 16,400,000 $ 9,646,000      
Black-Scholes                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Risk-free interest rate               4.15%      
Volatility               116.00%      
Expected term               9 years 7 months 24 days      
Monte-Carlo                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Risk-free interest rate               4.08% 4.35%    
Volatility               113.00% 80.00%    
Discount rate               30.00% 25.00%    
Executive Officers and Members of its Board of Directors                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Outstanding stock options       1,969,902       1,969,902      
Minimum                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Exercise price   $ 38.57   $ 38.57     $ 38.57 $ 38.57      
2025 Employee Stock Purchase Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Common stock shares reserved 450,000                    
Percentage of purchase price of common stock 85.00%                    
Unrecognized compensation cost   $ 1,900,000         $ 1,900,000        
Unrecognized compensation cost expected to be recognized over a weighted-average period             1 year 1 month 28 days        
Number of shares purchased             110,644        
Stock-based compensation expense             $ 1,800,000 $ 0      
2025 Employee Stock Purchase Plan | Maximum                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Risk-free interest rate             4.32%        
Volatility             90.00%        
Expected term             2 years        
2025 Employee Stock Purchase Plan | Minimum                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Risk-free interest rate             3.48%        
Volatility             81.00%        
Expected term             4 months 13 days        
2018 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Number of shares vested             1,114,614 1,114,614      
Number of shares available for issuance   0   0     0 0      
Outside of 2018 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Number of shares vested             628,829 628,829      
2019 Equity Incentive Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Number of shares available for issuance   0   831,177     0 831,177      
Stock options granted expiration period         10 years            
2025 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Number of shares available for issuance   4,790,225         4,790,225        
2019 Plan and 2025 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Total intrinsic value of options exercised             $ 11,200,000 $ 100,000      
Total fair value of options that vested             $ 11,100,000 $ 6,300,000      
Weighted average grant-date fair value of employee options granted             $ 12.34 $ 9.51      
Options subject to repurchase   $ 0   $ 0     $ 0 $ 0      
2025 Equity Incentive Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Common stock shares reserved                     5,300,000
Percentage of number of shares reserved for issuance 1.00%           5.00%        
Restricted Stock Awards | 2018 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Vesting period           4 years          
Restricted Stock Awards | 2018 Plan | Maximum                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Number of shares authorized           1,763,303          
Stock options granted expiration period           10 years          
Restricted Stock Awards | Outside of 2018 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Number of shares vested               25,930      
Number of shares issued                   639,201  
Restricted Stock Awards | 2019 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Weighted average grant-date fair value of employee options granted               $ 14.89      
Stock issued             0 14      
Restricted Stock Awards | 2025 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Weighted average grant-date fair value of employee options granted             $ 17.47        
Stock issued             4        
Stock Options                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Common stock shares reserved   5,484,226   5,278,735     5,484,226 5,278,735      
Stock-based compensation expense             $ 12,600,000 $ 9,600,000      
Stock Options | Maximum                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Risk-free interest rate             4.40% 4.65%      
Volatility             100.00% 100.00%      
Expected term             6 years 3 months 6 years 3 months      
Stock Options | Minimum                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Risk-free interest rate             3.71% 3.64%      
Volatility             83.00% 85.00%      
Expected term             5 years 2 months 1 day 6 years      
Stock Options | 2019 Plan and 2025 Plan                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Exercise price   $ 11.62   $ 10.44     $ 11.62 $ 10.44      
Outstanding stock options   5,484,226   5,278,735     5,484,226 5,278,735      
Restricted Stock Units                      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]                      
Number of shares issued     594,825                
Common stock shares reserved   593,525         593,525        
Unrecognized compensation cost   $ 12,100,000         $ 12,100,000        
Unrecognized compensation cost expected to be recognized over a weighted-average period             1 year 8 months 1 day        
Stock-based compensation expense             $ 2,000,000        
Weighted average grant date fair value     $ 23.67