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Stock-Based Compensation - Additional Information (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended
Jun. 18, 2024
$ / shares
shares
Sep. 30, 2024
$ / shares
shares
Jul. 31, 2024
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2024
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Apr. 28, 2025
$ / shares
shares
Nov. 20, 2024
shares
Jul. 24, 2024
shares
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Shares reserved for issuance       36,485,024   15,014,751 36,485,024      
Stock-based compensation expense | $       $ 4,295   $ 1,256 $ 10,613      
Common Stock, Shares, Issued 3,672,794     32,626,730   3,672,794 32,626,730      
Common stock, par value | $ / shares $ 0.0001     $ 0.0001   $ 0.0001 $ 0.0001 $ 0.0001    
2024 Equity Incentive Plan                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Shares reserved for issuance 86,215         2,392,751        
Available for future grant       0   5,675,025 0      
Expiration period             10 years      
Vested term             4 years      
2025 Equity Incentive Plan                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Percentage on total number of shares outstanding             5.00%      
Number of shares authorized       8,018,700     8,018,700      
Number of remaining shares       6,260,494     6,260,494      
2025 Employee Stock Purchase Plan                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Percentage on total number of shares outstanding             1.00%      
Shares reserved for issuance               526,241    
Available for future grant       2,000,000     2,000,000      
Issuance of common stock under ESPP, shares             0      
Minimum | 2024 Equity Incentive Plan                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Shares reserved for issuance                 2,300,238 86,215
Maximum | 2024 Equity Incentive Plan                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Shares reserved for issuance                 8,067,789 2,300,238
Vested term             4 years      
Employee Stock Option                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Weighted average grant date fair value | $ / shares           $ 1.43 $ 5.5      
Unrecognized stock based compensation cost | $       $ 37,700   $ 3,200 $ 37,700      
Unrecognized stock-based compensation weighted-average period           3 years 8 months 12 days 3 years 1 month 6 days      
Restricted Stock Awards                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Vested term             4 years      
Unrecognized stock-based compensation weighted-average period           3 years 7 months 6 days 2 years 9 months 18 days      
Common Stock, Shares, Issued 517,293     371,804   517,293 371,804      
Common stock, par value | $ / shares $ 0.001                  
Stock Issued During Period, Shares, Restricted Stock Award, Gross 86,215 86,215                
Stock issued during period shares restricted stock award cancelled   86,215                
Shares issued, price per share | $ / shares   $ 0.49     $ 0.49          
Restricted Stock Awards | Maximum                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Unrecognized stock based compensation cost | $       $ 100   $ 100 $ 100      
Parade Warrant Obligation                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Share outstanding percentage     0.01              
Estimated fair value of warrants to be granted | $       6,000   3,500 6,000      
Stock-based compensation expense | $       1,400     3,900      
Unrecognized stock based compensation cost | $       $ 1,100   $ 2,400 $ 1,100      
Unrecognized stock-based compensation weighted-average period           1 year 3 months 18 days      
Parade Warrant Obligation | Maximum                    
Share-Based Compensation Arrangement by Share-Based Payment Award                    
Stock-based compensation expense | $         $ 100 $ 1,100