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)

v3.23.3
Loss per Common Share - Summary of Weighted Average Number of Shares of Common Stock Outstanding (Details) - shares
shares in Thousands
 3 Months Ended
Aug. 31, 2023
Aug. 31, 2022
Stock options, warrants, and unvested restricted stock units    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive securities excluded from computation of loss per common share 276,503 193,609
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 34,818 32,170
Reserved for issuance of common stock through a placement agent    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive securities excluded from computation of loss per common share 14,663  
Reserved for issuance of common stock related to note conversion    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive securities excluded from computation of loss per common share 11,474