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)

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Loss per Common Share - Summary of Weighted Average Number of Shares of Common Stock Outstanding (Details) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Feb. 29, 2024
Feb. 28, 2023
Feb. 29, 2024
Feb. 28, 2023
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 315,808 203,274 315,808 203,274
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 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 36,298 33,323 36,298 33,323