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Note 5 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Income Tax Expense (Benefit) $ 968,000 $ 726,000   $ 1,636,000 $ 1,385,000
Effective Income Tax Rate Reconciliation, Percent 26.00% 26.90%   25.10% 28.70%
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount $ (22,000) $ (135,000)   $ (103,000) $ (139,000)
Open Tax Year         2022 2023 2024 2025
Forecast [Member]          
Income Taxes Payment Increase (Decrease)     $ (428,000)