Note 18 - Stockholders' Equity (Tables)
|
6 Months Ended |
Aug. 31, 2026 |
| Notes Tables |
|
| Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
| | | | | | | | | | Weighted | | | | | |
| | | | | | Weighted | | | Average | | | | | |
| | | | | | Average | | | Remaining | | | Aggregate | |
| | | | | | Exercise | | | Contractual | | | Intrinsic | |
| | Options | | | Price ($) | | | Life (Yrs.) | | | Value ($) | |
| | | | | | | | | | | | | | | | |
Options outstanding at February 28, 2025 | | | 76,342 | | | | 52.69 | | | | 1.60 | | | | - | |
Granted | | | 914,825 | | | | 4.39 | | | | 2.28 | | | | | |
Exercised | | | - | | | | - | | | | - | | | | - | |
Forfeited or cancelled | | | (76,342 | ) | | | 52.69 | | | | - | | | | - | |
Options outstanding at February 28, 2026 | | | 914,825 | | | | 4.39 | | | | 2.28 | | | | - | |
Granted | | | 200,000 | | | | 2.64 | | | | 2.94 | | | | - | |
Exercised | | | - | | | | - | | | | - | | | | - | |
Forfeited or cancelled | | | (175,000 | ) | | | 2.64 | | | | - | | | | - | |
Options outstanding August 31, 2026 | | | 939,825 | | | | 4.35 | | | | 1.80 | | | | - | |
Options expected to vest in the future as of August 31, 2026 | | | - | | | | - | | | | - | | | | - | |
Options exercisable at August 31, 2026 | | | 939,825 | | | | 4.35 | | | | 1.80 | | | | - | |
Options vested, exercisable, and options expected to vest at August 31, 2026 | | | 939,825 | | | | 4.35 | | | | 1.80 | | | | - | |
|
| Share-Based Payment Arrangement, Stock Appreciation Right, Activity [Table Text Block] |
| | | | | | | | | | Weighted | | | | | |
| | | | | | Weighted | | | Average | | | | | |
| | | | | | Average | | | Remaining | | | Aggregate | |
| | | | | | Exercise | | | Contractual | | | Intrinsic | |
| | SARs | | | Price ($) | | | Life (Yrs.) | | | Value ($) | |
| | | | | | | | | | | | | | | | |
SARs outstanding at February 28, 2025 | | | 40,223 | | | | 44.80 | | | | 1.99 | | | | - | |
Exercised | | | - | | | | - | | | | - | | | | - | |
Forfeited or cancelled | | | (3,907 | ) | | | 52.60 | | | | - | | | | - | |
SARs outstanding at February 28, 2026 | | | 36,316 | | | | 43.96 | | | | 1.17 | | | | - | |
Granted | | | - | | | | - | | | | - | | | | - | |
Exercised | | | - | | | | - | | | | - | | | | - | |
Forfeited or cancelled | | | (6,317 | ) | | | 68.40 | | | | - | | | | - | |
SARs outstanding August 31, 2026 | | | 29,999 | | | | 38.81 | | | | 0.81 | | | | - | |
SARs expected to vest in the future as of August 31, 2026 | | | - | | | | - | | | | - | | | | - | |
SARs exercisable at August 31, 2026 | | | 29,999 | | | | 38.81 | | | | 0.81 | | | | - | |
SARs vested, exercisable, and SARs expected to vest at August 31, 2026 | | | 29,999 | | | | 38.81 | | | | 0.81 | | | | - | |
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| Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] |
| | 2026 | | | 2025 | |
Dividend yield | | | - | % | | | - | % |
Risk-free interest rate | | | 3.54% - 4.24% | | | | 3.9% - 4.1% | |
Expected volatility | | | 104.5% - 119.4% | | | | 156.4% - 160.5% | |
Expected life (in years) | | | 1.5 - 2.5 | | | | 3.32 - 5.0 | |
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| Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] |
| | | | | | Weighted | | | Weighted Average | |
| | | | | | Average | | | Remaining | |
| | | | | | Exercise | | | Contractual | |
| | Warrants | | | Price ($) | | | Life (Yrs.) | |
Warrants outstanding at February 28, 2025 | | | 3,015,885 | | | | 5.36 | | | | 3.84 | |
Granted | | | 1,998,104 | | | | 3.34 | | | | 3.96 | |
Exercised | | | (237,429 | ) | | | 3.02 | | | | - | |
Forfeited or cancelled | | | (17,979 | ) | | | 128.32 | | | | - | |
Warrants outstanding at February 28, 2026 | | | 4,758,581 | | | | 4.15 | | | | 3.48 | |
Granted | | | 1,297,558 | | | | 3.64 | | | | 4.65 | |
Exercised | | | (8,278 | ) | | | 3.02 | | | | - | |
Forfeited or cancelled | | | - | | | | - | | | | - | |
Warrants outstanding at August 31, 2026 | | | 6,047,861 | | | | 4.05 | | | | 3.31 | |
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| Share-Based Payment Arrangement, Option [Member] |
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| Notes Tables |
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| Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
| | 2026 | | | 2025 | |
Dividend yield | | | - | % | | | - | % |
Risk-free interest rate | | | 3.89 | % | | | 3.83% - 4.06% | |
Expected volatility | | | 136.86 | % | | | 122.5% - 139.7% | |
Expected life (in years) | | | 3.0 | | | | 3.0 - 5.0 | |
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