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Note 1 - Summary of Significant Accounting Policies - Fair Value of Financial Assets and Liabilities (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Assets, fair value | $ 1,479 | $ 4,199
Contingent Considerations [Member] |  |
Liabilities, fair value | 474 | 859
Money Market Funds [Member] |  |
Assets, fair value | 1,479 | 4,199
Fair Value, Inputs, Level 1 [Member] |  |
Assets, fair value | 1,479 | 4,199
Fair Value, Inputs, Level 1 [Member] | Contingent Considerations [Member] |  |
Liabilities, fair value | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member] |  |
Assets, fair value | 1,479 | 4,199
Fair Value, Inputs, Level 2 [Member] |  |
Assets, fair value | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Contingent Considerations [Member] |  |
Liabilities, fair value | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member] |  |
Assets, fair value | 0 | 0
Fair Value, Inputs, Level 3 [Member] |  |
Assets, fair value | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Contingent Considerations [Member] |  |
Liabilities, fair value | 474 | 859
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member] |  |
Assets, fair value | $ 0 | $ 0

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