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Note 1 - Basis of Presentation and Consolidation - Carrying Amount of Assets and Liabilities Associated With VIE's (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Sep. 30, 2024
Investments in trading securities at fair value, current	$ 9,734	$ 9,692
Total VIE assets, maximum exposure to loss	48,930	48,064	$ 51,084
Variable Interest Entity, Not Primary Beneficiary [Member]
Investments in trading securities at fair value, current	9,734	9,692
Investments in trading securities at fair value, non-current	924	872
Other receivables	436	439
Total VIE assets, maximum exposure to loss	$ 11,094	$ 11,003

X

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Amount of asset recognized for present right to economic benefit.

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