Quarterly report pursuant to Section 13 or 15(d)

Convertible Instruments and Accrued Interest - Components (Details)

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Convertible Instruments and Accrued Interest - Components (Details)
$ in Thousands
 9 Months Ended
Feb. 29, 2024
USD ($)
Debt Instrument [Line Items]  
Outstanding balance, beginning $ 45,729
Consideration received 1,673
Amortization of issuance discount and costs 1,387
Interest expense 3,512
Fair market value of shares exchanged for repayment (13,500)
Difference between market value of common shares and reduction of principle 5,448
Outstanding balance, ending 44,249
Long-term Convertible Note - April 2, 2021 Note  
Debt Instrument [Line Items]  
Outstanding balance, beginning 9,674
Amortization of issuance discount and costs 153
Interest expense 642
Fair market value of shares exchanged for repayment (4,737)
Difference between market value of common shares and reduction of principle 1,487
Outstanding balance, ending 7,219
Long-term Convertible Note - April 23, 2021 Note  
Debt Instrument [Line Items]  
Outstanding balance, beginning 35,336
Amortization of issuance discount and costs 349
Interest expense 2,845
Fair market value of shares exchanged for repayment (1,826)
Difference between market value of common shares and reduction of principle 326
Outstanding balance, ending 37,030
Placement Agent Notes  
Debt Instrument [Line Items]  
Outstanding balance, beginning 719
Consideration received 975
Amortization of issuance discount and costs 583
Interest expense 18
Fair market value of shares exchanged for repayment (4,379)
Difference between market value of common shares and reduction of principle 2,084
Short Term Notes  
Debt Instrument [Line Items]  
Consideration received 698
Amortization of issuance discount and costs 302
Interest expense 7
Fair market value of shares exchanged for repayment (2,558)
Difference between market value of common shares and reduction of principle $ 1,551