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Note 9 - Share-Based Compensation (Details Textual) - shares | Aug. 14, 2024 | May 31, 2024 | Jan. 01, 2026 | Jan. 01, 2025
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Amended 2020 Incentive Plan [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) | 4,870,092 | 4,870,092 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  | 12,500,000 |  |
Percentage of increase in common stock capital shares for future issuance |  | 5.00% |  |
Pursuant to the "Evergreen" Provision in the Amended and Restated Plan [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  |  | 3,716,899 | 3,533,573

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