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Note 9 - Stock-based Compensation Plan (Tables) | 3 Months Ended
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Mar. 31, 2024
Notes Tables |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  | Number |  |  | Average |
|  | of |  |  | Grant-Date |
|  | Shares |  |  | Fair Value |
Nonvested at beginning of year |  |  | 5,600 |  |  | $ | 63.60 |
Granted |  |  | 3,150 |  |  |  | 28.00 |
Vested |  |  | - |  |  |  | - |
Forfeited |  |  | - |  |  |  | - |
Nonvested at end of year |  |  | 8,750 |  |  | $ | 50.78 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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 + Details
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