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Note 10 - Business Risk and Credit Risk Concentration Involving Cash (Details Textual)	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Number Of Customers	1	2	1	2