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Stock-Based Plans - Stock option weighted average assumptions (Details) - Stock Options - $ / shares
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Exercise price (in dollars per share) $ 16.72 $ 4.08
Fair value of common stock (in dollars per share) $ 16.72 $ 4.08
Expected term (in years) 6 years 6 years
Volatility 92.00% 88.70%
Risk-free rate 3.80% 4.20%
Dividend yield 0.00% 0.00%