Quarterly report pursuant to Section 13 or 15(d)

Loss Per Common Share - Summary of Weighted Average Number of Shares of Common Stock Outstanding (Details)

v3.22.4
Loss Per Common Share - Summary of Weighted Average Number of Shares of Common Stock Outstanding (Details) - shares
shares in Thousands
6 Months Ended
Nov. 30, 2022
Nov. 30, 2021
Stock options, warrants & unvested restricted stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive securities excluded from computation of loss per common share 204,273 73,223
Convertible notes    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive securities excluded from computation of loss per common share 12,000 12,000
Convertible Preferred Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive securities excluded from computation of loss per common share 32,591 34,089