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Note 3 - Equity Compensation Plans and Capital Stock (Tables) | 12 Months Ended
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Mar. 31, 2024
Notes Tables |
Nonvested Restricted Stock Shares Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average Grant |
|  | Number of |  |  | Date Fair Value |
|  | Shares |  |  | Per Share |
Unvested at March 31, 2022 |  |  | 139,523 |  |  | $ | 5.96 |
Granted |  |  | 7,700 |  |  |  | 9.10 |
Vested |  |  | (46,857 | ) |  |  | 6.21 |
Unvested at March 31, 2023 |  |  | 100,366 |  |  | $ | 6.08 |
Granted |  |  | 4,487 |  |  |  | 15.61 |
Vested |  |  | (40,366 | ) |  |  | 6.27 |
Unvested at March 31, 2024 |  |  | 64,487 |  |  | $ | 6.62 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Subparagraph (c) -Paragraph 2 -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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