Annual report [Section 13 and 15(d), not S-K Item 405]

Convertible Instruments and Accrued Interest - Outstanding Balance (Details)

v3.26.1
Convertible Instruments and Accrued Interest - Outstanding Balance (Details) - USD ($)
$ in Thousands
May 31, 2026
May 31, 2025
Debt Instrument    
Convertible notes payable, net $ 27,200 $ 27,200
Accrued interest on convertible notes 11,140 18,151
Outstanding convertible notes payable and accrued interest 38,340 45,351
Long-term Convertible Note - April 2, 2021 Note    
Debt Instrument    
Convertible notes payable, net 2,831 2,831
Accrued interest on convertible notes 5,872 5,378
Outstanding convertible notes payable and accrued interest 8,703 8,209
Long-term Convertible Note - April 23, 2021 Note    
Debt Instrument    
Convertible notes payable, net 24,369 24,369
Accrued interest on convertible notes 5,268 12,773
Outstanding convertible notes payable and accrued interest $ 29,637 $ 37,142