v3.26.1
Stock-Based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Shares      
Shares, Outstanding, Beginning Balance (in shares) 14,106,148    
Shares, Granted (in shares) 2,975,160    
Shares, Exercised (in shares) (23,032)    
Shares, Forfeited or expired (in shares) (1,251,731)    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period (1,046,363)    
Shares, Outstanding, Ending Balance (in shares) 14,760,182   14,106,148
Shares, Exercisable (in shares) 10,006,891    
Shares, Vested and expected to vest (in shares) 14,359,528    
Weighted- Average Exercise Price      
Weighted- Average Exercise Price, Outstanding, Beginning Balance (in dollars per share) $ 11.72    
Weighted- Average Exercise Price, Granted (in dollars per share) 1.91    
Weighted- Average Exercise Price, Exercised (in dollars per share) 2.92    
Weighted- Average Exercise Price, Forfeited (in dollars per share) 4.28    
Weighted- Average Exercise Price, Expired (in dollars per share) 15.69    
Weighted- Average Exercise Price, Outstanding, Ending Balance (in dollars per share) 10.10   $ 11.72
Weighted- Average Exercise Price, Exercisable (in dollars per share) 13.26    
Weighted- Average Exercise Price, Vested and expected to vest (in dollars per share) $ 10.28    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]      
Weighted- Average Remaining Contractual Term, Outstanding (in years) 6 years 4 months 24 days  
Weighted- Average Remaining Contractual Term, Exercisable (in years) 5 years 1 month 6 days    
Weighted- Average Remaining Contractual Term, Vested and expected to vest (in years) 6 years 3 months 18 days    
Aggregate Intrinsic Value, Exercised $ 24 $ 0  
Aggregate Intrinsic Value, Outstanding, Ending Balance 13,003   $ 125
Aggregate Intrinsic Value, Exercisable 2,327    
Aggregate Intrinsic Value, Vested and expected to vest $ 12,146    
Weighted-average grant-date fair value of options granted (in dollars per share) $ 1.60 $ 2.03  
Intrinsic value of options exercised $ 24 $ 0  
Cash received for options exercised 67 0  
Fair value of shares vested 4,285 $ 9,494  
Unrecognized compensation expense related to non-vested stock-options, net of related forfeiture estimates $ 9,600    
Unrecognized compensation expense recognition period (in years) 1 year 2 months 12 days