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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

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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