v3.26.1
Stock-based compensation (Details 1)
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Expected term (in years) 6 years 29 days  
Expected dividend yield 0.00% 0.00%
Minimum [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Expected term (in years)   5 years 6 months 10 days
Expected volatility 65.31% 65.27%
Risk-free interest rate 3.72% 4.09%
Maximum [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Expected term (in years)   6 years 29 days
Expected volatility 65.50% 65.73%
Risk-free interest rate 4.11% 4.47%