Annual report pursuant to Section 13 and 15(d)

Equity Awards - Activity (Detail)

v3.22.2.2
Equity Awards - Activity (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
May 31, 2022
May 31, 2021
May 31, 2020
Stock option and warrant activity      
Options and warrants outstanding, Number of Shares 60,774 130,561  
Granted, Number of Shares 50,205 7,036  
Exercised, Number of Shares (5,677) (75,735) (101,853)
Forfeited/expired/cancelled, Number of Shares (14,597) (1,088)  
Options and warrants outstanding, Number of Shares 90,705 60,774 130,561
Options and warrants outstanding and exercisable, Number of Shares 82,918    
Options and warrants outstanding, Weighted Average Exercise Price $ 0.95 $ 0.65  
Granted, Weighted Average Exercise Price 0.72 3.82  
Exercised, Weighted Average Exercise Price 0.71 0.59  
Forfeited/expired/cancelled, Weighted Average Exercise Price 1.36 1.66  
Options and warrants outstanding, Weighted Average Exercise Price 0.77 $ 0.95 $ 0.65
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 5 years 9 months 14 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 $ 896
Options and warrants outstanding and exercisable, Aggregate Intrinsic Value 352    
Cash received for options and warrants exercised 6,816 38,327 44,024
Aggregate intrinsic value of options and warrants exercised $ 5,815 $ 298,891 $ 112,145
Options outstanding, nonvested 7,500 5,800