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Note 12 - Income Taxes (Details Textual) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2020
Effective Income Tax Rate Reconciliation, Percent, Total | 22.40% | 22.30% |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |  |
Open Tax Year |  |  | 2017 2018 2019 2020 2021

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