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Note 4 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  | $ (358) | $ 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | General and Administrative Expense [Member] |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | $ (358) |  |  |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Current Liabilities [Member] |  |  |  |
Business Combination, Contingent Consideration, Liability, Current |  |  |  | $ 324

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