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Note 6 - Property and Equipment, Net (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Depreciation $ 3 $ 0 $ 94
Impairment, Excluding Lessor Asset under Operating Lease 0 0 0
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment $ 50 $ 0 $ 0