General form for registration of securities under the Securities Act of 1933

Convertible Instruments and Accrued Interest - Components (Details)

v3.26.1
Convertible Instruments and Accrued Interest - Components (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Feb. 28, 2026
May 31, 2025
Debt Instrument    
Outstanding balance, beginning $ 45,351 $ 45,020
Amortization of issuance discount and costs   407
Interest expense 1,934 4,424
Fair market value of shares and warrants exchanged for repayment (6,750) (4,273)
Difference between market value of common shares and reduction of principal   (227)
Outstanding balance, ending 40,535 45,351
Long-term Convertible Note - April 2, 2021 Note    
Debt Instrument    
Outstanding balance, beginning 8,209 7,420
Amortization of issuance discount and costs   45
Interest expense 377 744
Outstanding balance, ending 8,586 8,209
Long-term Convertible Note - April 23, 2021 Note    
Debt Instrument    
Outstanding balance, beginning 37,142 37,600
Amortization of issuance discount and costs   362
Interest expense 1,557 3,680
Fair market value of shares and warrants exchanged for repayment (6,750) (4,273)
Difference between market value of common shares and reduction of principal   (227)
Outstanding balance, ending $ 31,949 $ 37,142