Note 2 - Basis of Presentation - Carrying Amount of Assets and Liabilities associated with VIE's (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
Investments in securities at fair value, current	$ 10,071	$ 11,642
Total VIE assets, maximum exposure to loss	52,772	55,673	$ 55,745
Variable Interest Entity, Not Primary Beneficiary [Member]
Investments in securities at fair value, current	10,071	11,642
Investments in equity securities at fair value, non-current	830	785
Other receivables	29	45
Total VIE assets, maximum exposure to loss	$ 10,930	$ 12,472