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

Equity Awards and Warrants - Liability Classified Warrants (Details)

v3.23.2
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
May 31, 2022
Feb. 14, 2022
Feb. 04, 2022
May 31, 2021
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             $ 1.35     $ 1.00
Minimum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share $ 0.45   $ 0.45             0.45     0.45
Private Equity Offering | Maximum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share                         1.80
Private Equity Offering | Minimum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share                         $ 0.40
Accredited Investors                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Warrants to purchase common shares, shares       71.1                 900,000
Accredited Investors | Maximum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share                   1.00     $ 1.00
Accredited Investors | Minimum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share                   $ 0.45     0.40
Private Warrant Exchange [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Warrants to purchase common shares, shares                   7,900,000      
Exercise price of share             $ 1.00            
Private Warrant Exchange [Member] | Maximum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share                         0.90
Private Warrant Exchange [Member] | Minimum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share                         $ 0.21
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 $ 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 $ 0.30      
Stock Subscription Agreements [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Warrants to purchase common shares, shares                   5,000,000.0      
Exercise price of share                   $ 1.00      
Surety Bond Backstop Agreement                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Warrants to purchase common shares, shares                   15,000,000      
Initial Warrant                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Warrants to purchase common shares, shares                     15,000,000.0 15,000,000  
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 15,000,000  
Four Good Warrants                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share                   $ 0.20      
Four Good Warrants | Maximum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercise price of share                   $ 0.30