v3.26.3
Convertible Instruments and Accrued Interest - Convertible Note - April 2, 2021 & April 23, 2021 Note (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Aug. 31, 2026
Apr. 02, 2021
Long-term Convertible Note - April 2, 2021 Note    
Debt Instrument    
Interest rate per annum 5.00%  
Number of days of notice to be given for conversion of notes into common stock 5 years  
Conversion price per share upon five trading days' notice $ 10  
Shares reserved   6.0
Partitioned Notes    
Debt Instrument    
Convertible note, aggregate principal $ 3.0  
Long-term Convertible Note - April 23, 2021 Note    
Debt Instrument    
Interest rate per annum 5.00%  
Conversion price per share upon five trading days' notice $ 10  
Convertible note, aggregate principal $ 27.0  
Conversion of Series C preferred stock to common stock (in shares) 13.5