Convertible Instruments and Accrued Interest - Outstanding Balance (Details) - USD ($) $ in Thousands	Aug. 31, 2026	May 31, 2026
Debt Instrument
Convertible notes payable	$ 27,200	$ 27,200
Accrued interest on convertible notes	8,609	11,140
Outstanding convertible notes payable and accrued interest	35,809	38,340
Long-term Convertible Note - April 2, 2021 Note
Debt Instrument
Convertible notes payable	2,831	2,831
Accrued interest on convertible notes	5,982	5,872
Outstanding convertible notes payable and accrued interest	8,813	8,703
Long-term Convertible Note - April 23, 2021 Note
Debt Instrument
Convertible notes payable	24,369	24,369
Accrued interest on convertible notes	2,627	5,268
Outstanding convertible notes payable and accrued interest	$ 26,996	$ 29,637

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

+ Details