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Note 12 - Contingent Consideration - Summary of the Key Assumptions Used to Calculate Fair Value of Warrants (Details) | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 USD ($) d | Dec. 31, 2020 USD ($) d | Oct. 01, 2020 USD ($) d
--- | --- | --- | --- | --- | --- | --- | ---
Fair value (millions) | $ |  |  |  |  | $ 7,100 | $ 6,700 | $ 4,000.0
Measurement Input, Revenue Risk Premium [Member] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 6.50 | 6.60 | 6.60 | 6.60 | 6.70 | 6.90 | 7.10
Measurement Input, Revenue Volatility [Member] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 33 | 33 | 30 | 30 | 30 | 30 | 30
Measurement Input, Share Price [Member] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 7.61 | 10.88 | 14.58 | 17.39 | 18.96 | 23.42 | 14.23
Measurement Input, Payment Delay [Member] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | d |  |  |  |  | 80 | 80 | 0

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