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Note 10 - Income Taxes - Schedule of Income Tax Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2023
Income Tax Expense (Benefit) | $ 117 | $ 0 | $ 0
Foreign Tax Jurisdiction [Member] | Inland Revenue, Hong Kong [Member] |  |  |
Current year | 0 | 0 | 0
Prior year | 117 | 0 | 0
Income Tax Expense (Benefit) | $ 117 | $ 0 | $ 0

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