Note 1 - Revision to Previously Issued Consolidated Financial Statements (Details Textual) - USD ($)	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Liability for Uncertainty in Income Taxes, Noncurrent	$ 785,000	$ 671,000
Retained Earnings (Accumulated Deficit)	37,460,000	37,572,000
Equity, Attributable to Parent	$ 49,006,000	52,021,000	$ 53,610,000
Revision of Prior Period, Adjustment [Member]
Liability for Uncertainty in Income Taxes, Noncurrent		175,000
Retained Earnings (Accumulated Deficit)		(175,000)
Equity, Attributable to Parent		$ (175,000)