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Note 15 - Stockholders' Equity (Tables) | 12 Months Ended
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Mar. 31, 2025
Notes Tables |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] |
|  | Number of |
|  | Shares |
Vested |  |  | - |
Granted |  |  | 879,060 |
Vested |  |  | (287,500 | )
Forfeited or expired |  |  | - |
Vested |  |  | 591,560 |
Granted |  |  | 485,967 |
Vested |  |  | (795,927 | )
Forfeited or expired |  |  | (49,250 | )
Nonvested as of March 31, 2025 |  |  | 232,350 |
Share-Based Payment Arrangement, Activity [Table Text Block] |
|  | Year Ended March 31, |
|  | 2025 |  |  | 2024 |
Number of options granted |  |  | - |  |  |  | 25,000 |
Weighted-average exercise price per share |  | $ | - |  |  | $ | 1.75 |
Weighted-average grant date fair value per share |  | $ | - |  |  | $ | 1.75 |
|  | Year Ended March 31, |
|  | 2025 |  |  | 2024 |
Number of units granted |  |  | 954,638 |  |  |  | 2,075,756 |
Weighted-average grant date fair value per share |  | $ | 1.37 |  |  | $ | 1.71 |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Year Ended March 31, |
|  | 2025 |  |  | 2024 |
Expected volatility |  |  | 0.00 | % |  |  | 88.57 | %
Dividend yield |  |  | - | % |  |  | - | %
Risk-free rate |  |  | 0.00 | % |  |  | 4.12 | %
Expected term (in years) |  |  | - |  |  |  | 5.18 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  | Weighted-Average |
|  |  |  |  |  | Exercise Price per |
|  | Number of Shares |  |  | Share |
Outstanding as of April 1, 2023 |  |  | 2,416,667 |  |  | $ | 3.75 |
Granted |  |  | 25,000 |  |  |  | 1.75 |
Exercised |  |  | (10,000 | ) |  |  | 0.81 |
Forfeited or expired |  |  | (165,000 | ) |  |  | 3.88 |
Outstanding as of March 31, 2024 |  |  | 2,266,667 |  |  |  | 3.73 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Forfeited or expired |  |  | (65,000 | ) |  |  | 3.88 |
Outstanding as of March 31, 2025 |  |  | 2,201,667 |  |  | $ | 3.72 |
Exercisable as of March 31, 2025 |  |  | 2,191,667 |  |  | $ | 3.72 |
|  |  |  |  |  | Weighted-Average |
|  |  |  |  |  | Exercise Price per |
|  | Number of Shares |  |  | Share |
Outstanding as of April 1, 2023 |  |  | 25,000 |  |  | $ | 4.00 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Forfeited or expired |  |  | - |  |  |  | - |
Outstanding as of March 31, 2024 |  |  | 25,000 |  |  |  | 4.00 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Forfeited or expired |  |  | - |  |  |  | - |
Outstanding as of March 31, 2025 |  |  | 25,000 |  |  | $ | 4.00 |
Exercisable as of March 31, 2025 |  |  | 25,000 |  |  | $ | 4.00 |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Number of Shares |
Outstanding as of April 1, 2023 |  |  | 1,670,975 |
Granted |  |  | 2,075,756 |
Vested |  |  | (1,850,576 | )
Cancelled |  |  | (50,000 | )
Outstanding as of March 31, 2024 |  |  | 1,846,155 |
Granted |  |  | 1,206,386 |
Vested |  |  | (2,332,939 | )
Cancelled |  |  | (225,656 | )
Outstanding as of March 31, 2025 |  |  | 493,946 |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, 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)(2) -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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- 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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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