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Note 2 - Significant Accounting Policies (Details Textual)
3 Months Ended 6 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Effective Income Tax Rate Reconciliation, Percent 136.20% 0.00% 11.00% 0.00%