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Note 13 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Income Tax Expense (Benefit) $ (126,000) $ 11,000 $ (13,000) $ 111,000