Note 3 - Investments - Carrying Value of Equity Securities Without Readily Determinable Fair Values (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Other investments	$ 1,114	$ 2,827	$ 1,114	$ 2,827	$ 2,388
Upward carrying value changes	0	9	0	14
Downward carrying value changes/impairment	$ (499)	$ 0	$ (1,274)	$ (1,841)