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Note 10 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Jun. 30, 2024
Effective Income Tax Rate Reconciliation, Percent (55.90%) 187.50% 301.30% 30.50%  
Deferred Tax Assets, Valuation Allowance   $ 41,000   $ 41,000 $ 0
Liability for Uncertainty in Income Taxes, Noncurrent $ 838,000   $ 838,000   $ 785,000
Unrecognized Tax Benefits $ 838,000   $ 838,000