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Note 3 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | $ 8,600,000 | $ 8,639,000 | $ 0
Income Tax Expense (Benefit), Total | $ (400,000) | $ (443,893) | $ (1,675,381)
Share-based Payment Arrangement, Option [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Year) |  | 10 years | 10 years
Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 2 years |
Minimum [Member] | Share-based Payment Arrangement, Option [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Year) |  |  | 5 years 3 months 21 days
Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) |  | 15 years |
Maximum [Member] | Share-based Payment Arrangement, Option [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Year) |  |  | 10 years

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