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Note 17 - Stockholders' Equity (Tables) | 12 Months Ended
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Mar. 31, 2026
Notes Tables |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] |
|  | Number of |
|  | Shares |
Vested |  |  | 591,560 |
Granted |  |  | 485,967 |
Vested |  |  | (795,927 | )
Forfeited or expired |  |  | (49,250 | )
Vested |  |  | 232,350 |
Granted |  |  | 1,381,883 |
Vested |  |  | (595,783 | )
Forfeited or expired |  |  | (75,000 | )
Nonvested as of March 31, 2026 |  |  | 943,450 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  | Weighted-Average |
|  |  |  |  |  | Exercise Price per |
|  | Number of Shares |  |  | Share |
Outstanding as of April 1, 2024 |  |  | 226,667 |  |  | $ | 37.30 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Forfeited or expired |  |  | (6,500 | ) |  |  | 38.80 |
Outstanding as of March 31, 2025 |  |  | 220,167 |  |  |  | 37.20 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Forfeited or expired |  |  | (12,500 | ) |  |  | 31.41 |
Outstanding as of March 31, 2026 |  |  | 207,667 |  |  | $ | 37.52 |
Exercisable as of March 31, 2026 |  |  | 207,667 |  |  | $ | 37.52 |
|  |  |  |  |  | Weighted-Average |
|  |  |  |  |  | Exercise Price per |
|  | Number of Shares |  |  | Share |
Outstanding as of April 1, 2024 |  |  | 2,500 |  |  | $ | 40.00 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Forfeited or expired |  |  | - |  |  |  | - |
Outstanding as of March 31, 2025 |  |  | 2,500 |  |  |  | 40.00 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Forfeited or expired |  |  | - |  |  |  | - |
Outstanding as of March 31, 2026 |  |  | 2,500 |  |  | $ | 40.00 |
Exercisable as of March 31, 2026 |  |  | 2,500 |  |  | $ | 40.00 |
Share-Based Payment Arrangement, Activity [Table Text Block] |
|  | Year Ended March 31, |
|  | 2026 |  |  | 2025 |
Number of units granted |  |  | 182,656 |  |  |  | 120,639 |
Weighted-average grant date fair value per share |  | $ | 5.50 |  |  | $ | 13.70 |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Number of Shares |
Outstanding as of April 1, 2024 |  |  | 184,516 |
Granted |  |  | 120,639 |
Vested |  |  | (233,294 | )
Cancelled |  |  | (22,264 | )
Outstanding as of March 31, 2025 |  |  | 49,597 |
Granted |  |  | 182,656 |
Vested |  |  | (177,780 | )
Cancelled |  |  | (15,895 | )
Outstanding as of March 31, 2026 |  |  | 38,578 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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