Annual report [Section 13 and 15(d), not S-K Item 405]

Private Placements of Common Stock and Warrant exercises - Tender Offer and Warrants (Details)

v3.25.2
Private Placements of Common Stock and Warrant exercises - Tender Offer and Warrants (Details) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
12 Months Ended
Jul. 19, 2024
May 31, 2025
May 31, 2024
Share-based Compensation      
Common stock warrants to purchase shares 127.1    
Exercise price of share $ 0.09387    
Gross proceeds from warrant exercises $ 11,900    
Net proceeds from warrant exercises $ 10,400    
Shares issued during the period new issues shares 25.4    
Placement agent fees and expenses $ 1,400    
Percentage of gross proceeds 13.00%    
Legal fees $ 100    
Fair value of exercised warrants 1,700   $ 236
Fair value due to repricing $ 400    
Exercise of warrants for cash, shares   10.4  
Exercise of warrants for cash   $ 1,100  
Cashless exercise of warrants, shares   1.9  
Cashless exercise of warrants, warrants   2.6  
Cashless exercise of warrants, exercise price   $ 0.09387  
Maximum      
Share-based Compensation      
Exercise price of share   0.21  
Minimum      
Share-based Compensation      
Exercise price of share   $ 0.1