Quarterly report [Sections 13 or 15(d)]

Equity Incentive Plan - Stock options (Details)

v3.25.1
Equity Incentive Plan - Stock options (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 9 Months Ended 12 Months Ended
Feb. 28, 2025
Feb. 29, 2024
May 31, 2024
Additional Information      
Stock options grant date fair value $ 0.12 $ 0.17  
Stock Options      
Number of shares      
Options outstanding at the beginning of the period 25,849    
Granted 11,675    
Exercised (100)    
Forfeited, expired, and cancelled (50)    
Options outstanding at the end of the period 37,374   25,849
Options outstanding and exercisable (in shares) 26,598    
Weighted average exercise price      
Options outstanding at the beginning of the period (in dollars per share) $ 0.6    
Granted 0.14    
Exercised 0.21    
Forfeited, expired, and cancelled 0.66    
Options outstanding at the end of the period (in dollars per share) 0.46   $ 0.6
Options outstanding and exercisable $ 0.57    
Additional Information      
Weighted average remaining contractual life in years 7 years 10 months 9 days   7 years 9 months 7 days
Weighted average remaining contractual life in years exercisable 7 years 3 months 14 days    
Aggregate intrinsic value in exercised $ 10    
Aggregate intrinsic value in outstanding 3,325    
Aggregate intrinsic value in outstanding and exercisable $ 1,842    
Stock option granted, Shares 11,700 11,300  
Stock option vested, Shares   4,100  
Stock Options | Tranche One      
Additional Information      
Stock option granted, Shares   500  
Stock option vested, Shares 5,700 2,700  
Award vesting period 4 years 4 years  
Stock Options | Tranche Two      
Additional Information      
Stock option vested, Shares 6,000 4,000  
Award vesting period 1 year 1 year