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Note 3 - Investment Securities (Details Textual) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Equity Securities, FV-NI | $ 1,517 |  | $ 371
Equity Securities, FV-NI, Unrealized Gain (Loss) | (104) | $ 195 |
Precision BioSciences, Inc. [Member] |  |  |
Equity Securities, FV-NI | 1,500 |  |
Equity Securities, FV-NI, Unrealized Gain (Loss) | $ 300 |  |

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