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

Equity Awards and Warrants - Stock options (Details)

v3.23.2
Equity Awards and Warrants - Stock options (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 9 Months Ended 12 Months Ended
Feb. 28, 2023
Feb. 28, 2022
May 31, 2022
May 31, 2021
Number of shares        
Exercised     500  
Stock option and warrant activity        
Options and warrants outstanding, Number of Shares 90,705 60,774 60,774  
Granted, Number of Shares     50,205  
Exercised, Number of Shares     (5,677) (75,735)
Forfeited/expired/cancelled, Number of Shares     (14,597)  
Options and warrants outstanding, Number of Shares     90,705 60,774
Options and warrants outstanding and exercisable, Number of Shares     82,918  
Options and warrants outstanding, Weighted Average Exercise Price $ 0.77 $ 0.95 $ 0.95  
Granted, Weighted Average Exercise Price     0.72  
Exercised, Weighted Average Exercise Price     0.71  
Forfeited/expired/cancelled, Weighted Average Exercise Price     1.36  
Options and warrants outstanding, Weighted Average Exercise Price     0.77 $ 0.95
Options and warrants outstanding and exercisable, Weighted Average Exercise Price     $ 0.69  
Options and warrants outstanding, Weighted Average Remaining Contractual Life in Years     4 years 21 days 4 years 4 months 13 days
Options and warrants outstanding and exercisable, Weighted Average Remaining Contractual Life in Years     3 years 7 months 9 days  
Options and warrants outstanding, Aggregate Intrinsic Value     $ 352 $ 68,061
Award vesting period 4 years      
Stock options grant date fair value $ 0.34 $ 1.09    
Tranche One [Member]        
Stock option and warrant activity        
Stock option vested, Shares 10,900      
Tranche Two [Member]        
Stock option and warrant activity        
Stock option vested, Shares 1,100      
Award vesting period 1 year      
Tranche Three        
Stock option and warrant activity        
Stock option vested, Shares 400      
Stock Options        
Number of shares        
Outstanding, beginning of period 17,457      
Granted 12,417      
Forfeited, expired, and cancelled (7,783)      
Outstanding, end of period 22,091   17,457  
Options exercisable (in shares) 12,698      
Weighted average exercise price        
Outstanding at the beginning of the year (in dollars per share) $ 1.53      
Granted 0.41      
Forfeited, expired, and cancelled 1.16      
Outstanding at the end of the year (in dollars per share) 1.02   $ 1.53  
Options outstanding and exercisable $ 1.28      
Additional Information        
Weighted average remaining contractual life in years 8 years 1 month 13 days   7 years 9 months 14 days  
Weighted average remaining contractual life in years exercisable 7 years 1 month 24 days      
Stock option and warrant activity        
Stock option granted, Shares 12,400 11,300    
Award vesting period     3 years