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Share-based Compensation - Weighted-Average Fair Value Assumptions (Details) - $ / shares
12 Months Ended
Jan. 06, 2025
Dec. 31, 2025
Dec. 31, 2024
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected term (in years)   4 years 9 months 18 days 4 years
Risk-free interest rate   3.90% 4.20%
Volatility   94.80% 95.10%
Expected dividend yield   0.00% 0.00%
Stock options | Chief Executive Officer      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Valuation date stock price (in dollars per share) $ 11.23    
Expected term (in years) 10 years    
Risk-free interest rate 4.57%    
Volatility 84.00%    
Expected dividend yield 0.00%    
Restricted Stock Units, Service And Market Based Vesting | Chief Executive Officer      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Valuation date stock price (in dollars per share) $ 11.23    
Expected term (in years) 3 years    
Risk-free interest rate 4.25%    
Volatility 105.63%    
Expected dividend yield 0.00%    
Correlation coefficient 0.3741