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

Equity Awards and Warrants - Warrants Activity (Details)

v3.23.2
Equity Awards and Warrants - Warrants Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Feb. 28, 2023
May 31, 2022
May 31, 2021
Equity Awards and Warrants      
Warrants outstanding beginning of period 73,248    
Granted 119,022    
Exercised (4,965)    
Forfeited, expired, and cancelled (7,412)    
Warrants outstanding at end of period 179,893 73,248  
Warrants outstanding and exercisable 179,893    
Outstanding at the beginning of the year (in dollars per share) $ 0.59    
Granted 0.25    
Exercised 0.75    
Forfeited, expired, and cancelled 0.75    
Outstanding at the end of the year (in dollars per share) 0.33 $ 0.59  
Warrants outstanding and exercisable $ 0.33    
Weighted average remaining contractual life in years beginning 3 years 2 months 4 days    
Weighted average remaining contractual life in years end of period 4 years 4 months 20 days 3 years 2 months 4 days  
Weighted average remaining contractual life in years exercisable 4 years 4 months 20 days    
Aggregate intrinsic value outstanding of beginning $ 352    
Aggregate intrinsic value outstanding of end period 12,245 $ 352  
Aggregate intrinsic value exercisable $ 12,245    
Stock Options And Warrants Exercised In Period   5,677,000 75,735,000
Proceeds from Stock Options and Warrants Exercised   $ 6,816 $ 38,327
Stock Options And Warrants Exercised, Aggregate Intrinsic Value   $ 5,815 $ 298,891