Note 11 - Income Taxes (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Liability for Uncertainty in Income Taxes, Current	$ 549,000		$ 549,000
Unrecognized Tax Benefits	$ 549,000		$ 549,000
Domestic Tax Jurisdiction [Member]
Effective Income Tax Rate Reconciliation, Percent	187.50%	16.80%	30.50%	21.70%
Foreign Tax Jurisdiction [Member] \| Canada Revenue Agency [Member]
Deferred Tax Assets, Valuation Allowance	$ 26,000		$ 26,000		$ 24,000

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of unrecognized tax benefits.

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