Quarterly report pursuant to Section 13 or 15(d)

Equity Awards and Warrants - Liability Classified Warrants (Details)

v3.23.1
Equity Awards and Warrants - Liability Classified Warrants (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Feb. 28, 2023
Aug. 31, 2022
Feb. 28, 2023
Mar. 31, 2023
Jan. 31, 2023
Dec. 01, 2022
Nov. 30, 2022
Aug. 30, 2022
Jun. 30, 2022
Feb. 14, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares   5,500,000   71,100,000            
Exercise price of share       $ 0.50            
Liability Classified Warrants                    
Classified as liability due to lack of shares availability at issuance   $ 14,522                
Classified as equity upon increase in availability   (23,123)                
Classified as liability due to variable settlement term $ 2,057                  
Classified as equity upon finalized settlement term (2,212)                  
Loss on derivative due to change in fair market value $ 155 $ 8,601 $ 8,800              
Maximum                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Exercise price of share $ 0.75 $ 0.255 $ 0.75              
Minimum                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Exercise price of share $ 0.45   $ 0.45              
Accredited Investors                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares       71.1            
Private Warrant Exchange [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Exercise price of share             $ 1.00      
Allotment to placement agent                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares         10,700,000       19,400,000  
Exercise price of share         $ 0.23     $ 0.40 $ 0.255  
Allotment to placement agent | Maximum                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Exercise price of share   $ 0.306                
Second Private Placement                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares                 64,000,000.0  
Exercise price of share                 $ 0.306  
Initial Warrant                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares                   15,000,000.0
Second Warrant Member                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Exercise price of share           $ 0.10        
Second Warrant Member | Maximum                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares 7,500,000   7,500,000     7,500,000        
Make-Whole Warrant                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Warrants to purchase common shares, shares                   15,000,000.0