General form of registration statement for all companies including face-amount certificate companies

Private Placements of Common Stock and Warrants - Liability Classified Warrants (Details)

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Private Placements of Common Stock and Warrants - Liability Classified Warrants (Details) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
 12 Months Ended
May 31, 2024
May 31, 2023
May 03, 2024
Dec. 31, 2023
Dec. 30, 2023
Oct. 23, 2023
Sep. 30, 2023
Jul. 31, 2023
Jun. 30, 2023
Feb. 28, 2023
Dec. 01, 2022
Jun. 30, 2022
Liability Classified Warrants                        
Warrants to purchase common shares, shares   0.2   52.6     21.5          
Class of warrants, exercise price $ 0.21     $ 0.21 $ 0.35   $ 0.50 $ 0.306 $ 0.306     $ 0.50
Purchase price per unit     $ 0.10     $ 0.16            
Classified as liability $ 6,970 $ 16,664                    
Reclassified as equity (7,285) (25,335)                    
Loss on derivative due to change in fair market value $ 236 $ 8,750                    
Minimum                        
Liability Classified Warrants                        
Class of warrants, exercise price $ 0.10                      
Second Warrant                        
Liability Classified Warrants                        
Class of warrants, exercise price                     $ 0.10  
Second Warrant | Maximum                        
Liability Classified Warrants                        
Warrants to purchase common shares, shares                   7.5 7.5