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Note 13 - Contingent Consideration - Summary of the Key Assumptions Used to Calculate Fair Value of Warrants (Details) $ in Millions | Jun. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Sep. 30, 2022 USD ($) | Jun. 30, 2022 USD ($) | Mar. 31, 2022 USD ($)
--- | --- | --- | --- | --- | --- | ---
Fair value (millions) | $ 2.6 | $ 1.3 | $ 0.9 | $ 1.1 | $ 1.4 | $ 1.2
Measurement Input, Revenue Risk Premium [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 5.20 | 5.30 | 5.30 | 5.20 | 6.60 | 6.50
Measurement Input, Revenue Volatility [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 23 | 25 | 25 | 25 | 30 | 33
Measurement Input, Share Price [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 6.26 | 4.91 | 3.68 | 4.38 | 5.18 | 7.61
Measurement Input, Payment Delay [Member] |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 80 | 80 | 80 | 80 | 80 | 80

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