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Note 8 - Revenue From Government Contract (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Jun. 12, 2024
Revenue from Contract with Customer, Including Assessed Tax | $ 300,677 | $ 0 | $ 300,677 | $ 0 | $ 0 | $ 81,526 |
BARDA [Member] | Allucent [Member] |  |  |  |  |  |  |
Government Assistance, Award Amount |  |  |  |  |  |  | $ 343,000,000
BARDA Contract [Member] |  |  |  |  |  |  |
Government Assistance, Award Amount |  |  |  |  |  |  | 24,300,000
BARDA Contract [Member] | Grant [Member] |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 300,677 |  | $ 300,677 |  |  |  |
BARDA Contract [Member] | Maximum [Member] |  |  |  |  |  |  |
Government Assistance, Award Amount |  |  |  |  |  |  | $ 45,000,000

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