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Note 8 - Income Taxes (Details Textual)
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Effective Income Tax Rate Reconciliation, Percent 24.90% 17.50% 24.00% 21.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 21.00%