Quarterly report [Sections 13 or 15(d)]

Warrants - Warrant activity (Details)

v3.25.2
Warrants - Warrant activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Aug. 31, 2025
May 31, 2025
Warrants    
Warrants outstanding beginning of period 213,128  
Exercised (33)  
Forfeited, expired, and cancelled (105)  
Warrants outstanding at end of period 212,990 213,128
Warrants outstanding and exercisable 212,990  
Outstanding at the beginning of the year (in dollars per share) $ 0.27  
Exercised (in dollars per share) 0.09  
Forfeited, expired, and cancelled (in dollars per share) 3.07  
Outstanding at the end of the year (in dollars per share) 0.26 $ 0.27
Warrants outstanding and exercisable (in dollars per share) $ 0.26  
Weighted average remaining contractual life in years 3 years 5 months 15 days 3 years 8 months 15 days
Weighted average remaining contractual life in years outstanding and exercisable 3 years 5 months 15 days  
Aggregate intrinsic value outstanding of beginning $ 27,923  
Aggregate intrinsic value exercised 7  
Aggregate intrinsic value outstanding of end period 18,990 $ 27,923
Aggregate intrinsic value outstanding and exercisable $ 18,990