Note 2 - Summary of Significant Accounting Policies - Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares |
6 Months Ended | |
|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2025 |
|
| Antidilutive Securities (in shares) | 9,257,853 | 7,396,016 |
| Warrant [Member] | ||
| Antidilutive Securities (in shares) | 6,047,861 | 3,197,741 |
| Share-Based Payment Arrangement, Option [Member] | ||
| Antidilutive Securities (in shares) | 939,825 | 806,250 |
| Preferred Stock [Member] | ||
| Antidilutive Securities (in shares) | 1,084,600 | 3,392,025 |
| Convertible Debt Securities [Member] | ||
| Antidilutive Securities (in shares) | 1,185,567 | 0 |