Note 1 - Basis of Presentation and Consolidation (Details Textual) - USD ($)	Sep. 30, 2024	Jun. 30, 2024	Jul. 01, 2023
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 10,600,000	$ 10,500,000
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Noncurrent	109,000	132,000
Retained Earnings (Accumulated Deficit)	$ 37,471,000	$ 37,460,000
Accounting Standards Update 2016-13 [Member]
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Noncurrent			$ 232,000
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Retained Earnings (Accumulated Deficit)			$ (183,000)