Quarterly report pursuant to Section 13 or 15(d)

Private Placements of Common Stock and Warrants - Warrants Activity (Details)

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Private Placements of Common Stock and Warrants - Warrants Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Nov. 30, 2024
May 31, 2024
Private Placements of Common Stock and Warrants    
Warrants outstanding beginning of period 361,445  
Exercised (127,087)  
Forfeited, expired, and cancelled (4,729)  
Warrants outstanding at end of period 229,629 361,445
Warrants outstanding and exercisable 229,629  
Outstanding at the beginning of the year (in dollars per share) $ 0.34  
Exercised (in dollars per share) 0.09  
Forfeited, expired, and cancelled (in dollars per share) 0.37  
Outstanding at the end of the year (in dollars per share) 0.26 $ 0.34
Warrants outstanding and exercisable (in dollars per share) $ 0.26  
Weighted average remaining contractual life in years 4 years 29 days 4 years 2 months 15 days
Weighted average remaining contractual life in years outstanding and exercisable 4 years 29 days  
Aggregate intrinsic value outstanding of beginning $ 2,697  
Aggregate intrinsic value outstanding of end period 1,269 $ 2,697
Aggregate intrinsic value outstanding and exercisable $ 1,269