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)

v3.23.1
Loss Per Common Share - Summary of Weighted Average Number of Shares of Common Stock Outstanding (Details) - shares
shares in Thousands
9 Months Ended
Feb. 28, 2023
Feb. 28, 2022
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 203,274 98,309
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 33,323 32,197