Note 11 - Income Taxes - Schedule of Components of Income Tax Benefit (Details) - USD ($)	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Federal	$ 0	$ 0
Current State and Local Tax Expense (Benefit)	0	0
Total current tax benefit	0	0
Federal	0	0
State and local	0	0
Total deferred tax benefit	0	0
Total tax benefit	$ 0	$ 0

Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction.

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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount of current state and local tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current regional, territorial, and provincial tax expense (benefit) for non-US (United States of America) jurisdiction.

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Amount of deferred federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, deferred national tax expense (benefit) for non-US (United States of America) jurisdiction.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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