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Note 1 - Organization and Decription of Business and Significant Accounting Policies - Schedule of Tax Jurisdictions (Details) - State and Local Jurisdiction [Member] | Sep. 30, 2023
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Tax Year 2023 [Member] |
Number of State Tax Jurisdictions That Remain Open to Examination | 22
Tax Year 2022 [Member] |
Number of State Tax Jurisdictions That Remain Open to Examination | 22
Tax Year 2021 [Member] |
Number of State Tax Jurisdictions That Remain Open to Examination | 22
Tax Year 2020 [Member] |
Number of State Tax Jurisdictions That Remain Open to Examination | 22
Tax Year 2019 [Member] |
Number of State Tax Jurisdictions That Remain Open to Examination | 19

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