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

Income Taxes - Reconciliation of Tax Rates (Details)

v3.26.1
Income Taxes - Reconciliation of Tax Rates (Details) - USD ($)
12 Months Ended
May 31, 2026
May 31, 2025
Effective Income Tax Rate Reconciliation, Percent [Abstract]    
U.S. federal statutory tax rate amount $ (8,967,000)  
U.S. federal statutory tax rate 21.00% 21.00%
Changes in valuation allowance Amount $ 7,237,000  
Changes in valuation allowance Amount (16.90%) (64.90%)
Derivative loss   4.80%
Non-deductible debt issuance costs $ 410,000  
Non-deductible debt issuance costs (1.00%) (2.30%)
Non-deductible interest on convertible notes Amount $ 523,000  
Non-deductible interest on convertible notes (1.20%) 24.80%
Non-deductible loss on induced conversion   6.60%
Non-deductible debt discount amortization   2.30%
Non-taxable or non-deductible items - Stock compensation Amount $ 2,000  
Non-taxable or non-deductible items - Stock Compensation (0.00%) 6.20%
Non-taxable or non-deductible items-Other $ 3,000  
Non-taxable or non-deductible items - Other Percent (0.00%)  
Stock compensation -Amount $ 792,000  
Stock compensation - Percent (1.90%)  
NOL expiration   1.50%
Other   0.00%
Total provision for income taxes Amount $ 0 $ 0
Total provision for income taxes (0.00%) 0.00%