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Note 2 - Investments - Schedule of Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Jun. 30, 2024
Debt Securities, Available-for-sale, Adjusted Cost	$ 18,998	$ 22,651
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(941)	(1,177)
Debt Securities, Available-for-sale, Fair Value	18,057	21,474
Financial instrument, short-term investments	18,057	21,474
Financial instrument, long-term investments	0	0
Corporate & Government Debt Mutual Funds Securities [Member]
Debt Securities, Available-for-sale, Adjusted Cost	11,623	15,276
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(693)	(850)
Debt Securities, Available-for-sale, Fair Value	10,930	14,426
Financial instrument, short-term investments	10,930	14,426
Financial instrument, long-term investments	0	0
Corporate & Government Debt ETFs Securities [Member]
Debt Securities, Available-for-sale, Adjusted Cost	7,375	7,375
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(248)	(327)
Debt Securities, Available-for-sale, Fair Value	7,127	7,048
Financial instrument, short-term investments	7,127	7,048
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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