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Note 9 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Income Tax Expense (Benefit) $ 78,000 $ 60,000 $ 176,000 $ 163,000
Effective Income Tax Rate Reconciliation, Percent (4.20%) (1.30%) (1.80%) (0.90%)