Note 12 - Income Taxes - Income Taxes Paid (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025
U.S. Federal	$ 0	$ (9)
State and Local (Texas)	6	7
Foreign (Canada)	39	66
Total income tax paid, net of refunds received	$ 45	$ 64

Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Topic 230
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