v3.25.2
Stock-Based Compensation - Stock Options - Activity (Details) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Number of Options      
Beginning balance (in shares) 31,232,633 29,969,324  
Forfeitures (in shares) (584,210) (2,760,530)  
Exercised (in shares) (448,546) (50,000)  
Granted (in shares) 159,156 4,073,839  
Ending balance (in shares) 30,359,033 31,232,633 29,969,324
Weighted Average Exercise Price      
Beginning of period (in dollars per share) $ 0.43 $ 0.5  
Forfeitures (in dollars per share) 0.34 1.29  
Exercised (in dollars per share) 0.18 0.33  
Granted (in dollars per share) 0.49 0.48  
End of period (in dollars per share) $ 0.43 $ 0.43 $ 0.5
Additional Information      
Weighted average remaining life 5 years 10 days 5 years 5 months 12 days 6 years 2 months 4 days
Options exercisable, outstanding (in shares) 27,323,701    
Options exercisable, weighted average exercise price (in dollars per share) $ 0.42    
Options exercisable, weighted average remaining life 4 years 7 months 13 days