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

Equity Awards and Warrants - Stock options (Details)

v3.24.0.1
Equity Awards and Warrants - Stock options (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 6 Months Ended 12 Months Ended
Nov. 30, 2023
Nov. 30, 2022
May 31, 2023
May 31, 2022
May 31, 2021
Additional Information          
Stock options grant date fair value $ 0.23 $ 0.34      
Tranche One [Member]          
Additional Information          
Stock option vested, Shares 10,900        
Award vesting period 4 years        
Tranche Two [Member]          
Additional Information          
Stock option vested, Shares 1,100        
Award vesting period 1 year        
Tranche Three          
Additional Information          
Stock option vested, Shares 400        
Stock Options          
Number of shares          
Outstanding, beginning of period 19,823 17,457 17,457 17,839  
Granted 500   12,417 11,985  
Exercised       (510)  
Forfeited, expired, and cancelled (692)   (10,051) (11,857)  
Outstanding, end of period 19,631   19,823 17,457 17,839
Options exercisable (in shares) 14,187   11,932    
Weighted average exercise price          
Outstanding at the beginning of the year (in dollars per share) $ 0.99 $ 1.53 $ 1.53 $ 1.58  
Granted 0.26   0.41 1.38  
Exercised       0.79  
Forfeited, expired, and cancelled 1.45   1.16 1.51  
Outstanding at the end of the year (in dollars per share) 0.96   0.99 $ 1.53 $ 1.58
Options outstanding and exercisable $ 1.12   $ 1.21    
Additional Information          
Weighted average remaining contractual life in years 7 years 5 months 15 days   7 years 10 months 13 days 7 years 9 months 14 days 7 years 11 months 4 days
Weighted average remaining contractual life in years exercisable 6 years 11 months 4 days   7 years 7 days    
Aggregate intrinsic value       $ 301 $ 15,390
Stock option granted, Shares 500 12,400