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

Convertible Instruments and Accrued Interest - Outstanding Balance (Details)

v3.25.2
Convertible Instruments and Accrued Interest - Outstanding Balance (Details) - USD ($)
$ in Thousands
May 31, 2025
May 31, 2024
Debt Instrument    
Convertible notes payable outstanding principal $ 27,200 $ 30,200
Less: Unamortized debt discount and issuance costs   (407)
Convertible notes payable, net 27,200 29,793
Accrued interest on convertible notes 18,151 15,227
Outstanding convertible notes payable, net and accrued interest 45,351 45,020
Long-term Convertible Note - April 2, 2021 Note    
Debt Instrument    
Convertible notes payable outstanding principal 2,831 2,831
Less: Unamortized debt discount and issuance costs   (45)
Convertible notes payable, net 2,831 2,786
Accrued interest on convertible notes 5,378 4,634
Outstanding convertible notes payable, net and accrued interest 8,209 7,420
Long-term Convertible Note - April 23, 2021 Note    
Debt Instrument    
Convertible notes payable outstanding principal 24,369 27,369
Less: Unamortized debt discount and issuance costs   (362)
Convertible notes payable, net 24,369 27,007
Accrued interest on convertible notes 12,773 10,593
Outstanding convertible notes payable, net and accrued interest $ 37,142 $ 37,600