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Note 2 - Investments - Schedule of Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025
Debt Securities, Available-for-sale, Adjusted Cost	$ 12,006	$ 15,972
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(716)	(864)
Debt Securities, Available-for-sale, Fair Value	11,290	15,108
Financial instrument, short-term investments	11,290	15,108
Financial instrument, long-term investments	0	0
Corporate & Government Debt Mutual Funds Securities [Member]
Debt Securities, Available-for-sale, Adjusted Cost	7,246	10,547
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(553)	(668)
Debt Securities, Available-for-sale, Fair Value	6,693	9,879
Financial instrument, short-term investments	6,693	9,879
Financial instrument, long-term investments	0	0
Corporate & Government Debt ETFs Securities [Member]
Debt Securities, Available-for-sale, Adjusted Cost	4,760	5,425
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(163)	(196)
Debt Securities, Available-for-sale, Fair Value	4,597	5,229
Financial instrument, short-term investments	4,597	5,229
Financial instrument, long-term investments	$ 0	$ 0

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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