v3.26.3
Share-Based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Options Outstanding    
Outstanding at beginning of period (in shares) 2,714,651  
Granted (in shares) 2,741,525  
Exercised (in shares) 0  
Expired (In shares) (40,530)  
Forfeited (In shares) (106,632)  
Outstanding at end of period (in shares) 5,309,014 2,714,651
Exercisable (in shares) 1,745,847  
Weighted-Average Exercise Price    
Outstanding at beginning of period (in dollars per share) $ 15.54  
Granted (in dollars per share) 4.11  
Exercised (in dollars per share) 0  
Expired (in dollars per share) 14.85  
Forfeited (in dollars per share) 8.25  
Outstanding at end of period (in dollars per share) 9.79 $ 15.54
Exercisable (in dollars per share) $ 16.02  
Weighted-Average Remaining Contractual Term (in years) / Aggregate Intrinsic Value    
Weighted Average Remaining Contractual Term (in years), Options Outstanding 8 years 8 months 15 days 8 years 6 months 7 days
Weighted Average Remaining Contractual Term (in years), Exercisable 7 years 8 months 4 days  
Aggregate Intrinsic Value, Outstanding $ 14 $ 22
Aggregate Intrinsic Value, Exercisable $ 13