Note 15 - Share-Based Payments (Tables)
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6 Months Ended |
Aug. 31, 2026 |
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| Notes Tables |
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| Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
| | | 2026 | | | 2025 | |
| | | Number of | | | Weighted average | | | Number of | | | Weighted average | |
| | | stock options | | | exercise price | | | stock options | | | exercise price | |
| Outstanding, beginning of period | | | 7,325,317 | | | $ | 2.73 | | | | 5,573,138 | | | $ | 3.19 | |
| Granted | | | 1,005,000 | | | | 1.44 | | | | - | | | | - | |
| Exercised | | | - | | | | - | | | | - | | | | - | |
| Forfeited | | | - | | | | - | | | | (80,000 | ) | | | 3.11 | |
| Expired | | | - | | | | - | | | | - | | | | - | |
| Outstanding, end of period | | | 8,330,317 | | | $ | 2.58 | | | | 5,493,138 | | | $ | 3.19 | |
| Exercisable, end of period | | | 4,252,043 | | | $ | 3.74 | | | | 2,711,727 | | | $ | 4.98 | |
| | | 2026 | | | 2025 | |
| | | Number of | | | Weighted average | | | Number of | | | Weighted average | |
| | | stock options | | | exercise price | | | stock options | | | exercise price | |
| Outstanding, beginning of period | | | 6,243,138 | | | $ | 2.96 | | | | 2,771,216 | | | $ | 5.25 | |
| Granted | | | 2,087,179 | | | | 1.44 | | | | 2,801,922 | | | | 1.16 | |
| Exercised | | | - | | | | - | | | | - | | | | - | |
| Forfeited | | | - | | | | - | | | | (80,000 | ) | | | 3.11 | |
| Expired | | | - | | | | - | | | | - | | | | - | |
| Outstanding, end of period | | | 8,330,317 | | | $ | 2.58 | | | | 5,493,138 | | | $ | 3.19 | |
| Exercisable, end of period | | | 4,252,043 | | | $ | 3.74 | | | | 2,711,727 | | | $ | 4.98 | |
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| Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
| | | 2026 | | | 2025 | |
| Exercise price | | $ | 0.85-1.44 | | | $ | 1.16 | |
| Risk-free interest rate | | | 4.32% - 4.46% | | | | 3.68% - 3.72% | |
| Expected dividend yield | | | 0 | % | | | 0 | % |
| Expected volatility | | | 82%-85% | | | | 81%-82% | |
| Expected life (years) | | | 3.5 - 5.0 years | | | | 3.5 - 5.0 years | |
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| Schedule of Nonvested Share Activity [Table Text Block] |
| | | 2026 | |
| | | Number of | | | Weighted average | |
| | | stock options | | | exercise price | |
| Nonvested, beginning of period | | | 3,461,411 | | | $ | 0.63 | |
| Granted | | | 2,087,179 | | | | 0.67 | |
| Exercised | | | - | | | | - | |
| Forfeited | | | - | | | | - | |
| Vested | | | (1,470,316 | ) | | | 0.78 | |
| Nonvested, end of period | | | 4,078,274 | | | $ | 0.76 | |
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| Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
| | | 2026 | | | 2025 | |
| | | | | | | Weighted average | | | | | | | Weighted average | |
| | | Number of units | | | fair value price | | | Number of units | | | fair value price | |
| Outstanding, beginning of period | | | 4,218,696 | | | $ | 6.35 | | | | 3,981,121 | | | $ | 6.73 | |
| Granted | | | 566,572 | | | | 0.86 | | | | 310,770 | | | | 1.31 | |
| Settled | | | (4,000 | ) | | | 2.81 | | | | (28,770 | ) | | | 1.13 | |
| Forfeited | | | - | | | | - | | | | (6,589 | ) | | | 5.32 | |
| Outstanding, end of period | | | 4,781,268 | | | $ | 5.70 | | | | 4,256,532 | | | $ | 6.38 | |
| Outstanding vested, end of period | | | 2,197,038 | | | $ | 5.08 | | | | 1,833,531 | | | $ | 5.71 | |
| | | 2026 | | | 2025 | |
| | | | | | | Weighted average | | | | | | | Weighted average | |
| | | Number of units | | | fair value price | | | Number of units | | | fair value price | |
| Outstanding, beginning of period | | | 4,261,512 | | | $ | 6.36 | | | | 4,466,958 | | | $ | 6.32 | |
| Granted | | | 566,572 | | | | 0.86 | | | | 310,770 | | | | 1.31 | |
| Settled | | | (46,816 | ) | | | 7.62 | | | | (126,857 | ) | | | 2.90 | |
| Forfeited | | | - | | | | - | | | | (394,339 | ) | | | 2.91 | |
| Outstanding, end of period | | | 4,781,268 | | | $ | 5.70 | | | | 4,256,532 | | | $ | 6.38 | |
| Outstanding vested, end of period | | | 2,197,038 | | | $ | 5.08 | | | | 1,833,531 | | | $ | 5.71 | |
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