Note 2 - Significant Accounting Policies - Carrying Amount of Assets and Liabilities Associated With VIE's (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Investments in trading securities at fair value, current	$ 8,871	$ 9,692
Total Assets	48,034	48,064
Variable Interest Entity, Not Primary Beneficiary [Member]
Investments in trading securities at fair value, current	8,871	9,692
Investments in trading securities at fair value, non-current	871	872
Accounts and other receivables	496	439
Total Assets	$ 10,238	$ 11,003