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Note 3 - Discontinued Operations (Details Textual) - Discontinued Operations, Disposed of by Sale [Member] - USD ($) $ in Millions | Sep. 30, 2025 | Mar. 07, 2025 | Dec. 31, 2024 | Oct. 31, 2024
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Arthrosurface Incorporated [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  |  |  | $ 7.0
Disposal Group, Including Discontinued Operation, Buy-Out Payment |  |  |  | $ 14.0
Disposal Group, Including Discontinued Operation, Consideration |  |  | $ 5.9 |
Financing Receivable, after Allowance for Credit Loss | $ 6.5 |  | $ 5.9 |
Parcus Medical [Member] |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  | $ 4.5 |  |

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