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Note 2 - Investments - Schedule of Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Jun. 30, 2023
--- | --- | ---
Debt Securities, Available-for-sale, Adjusted Cost | $ 27,365 | $ 29,372
Debt Securities, Available-for-sale, Unrealized Gain | 0 | 0
Debt Securities, Available-for-sale, Unrealized Loss | (1,169) | (1,453)
Debt Securities, Available-for-sale, Fair Value | 26,196 | 27,919
Total | 26,196 | 27,919
Bank Time Deposits [Member] |  |
Maturities from 1-90 days, time deposit | 0 | 1,996
Corporate & Government Debt Mutual Funds Securities [Member] |  |
Debt Securities, Available-for-sale, Adjusted Cost | 19,990 | 19,990
Debt Securities, Available-for-sale, Unrealized Gain | 0 | 0
Debt Securities, Available-for-sale, Unrealized Loss | (846) | (1,025)
Debt Securities, Available-for-sale, Fair Value | 19,144 | 18,965
financial instrument, short-term investments | 19,144 | 18,965
Corporate & Government Debt ETFs Securities [Member] |  |
Debt Securities, Available-for-sale, Adjusted Cost | 7,375 | 7,376
Debt Securities, Available-for-sale, Unrealized Gain | 0 | 0
Debt Securities, Available-for-sale, Unrealized Loss | (323) | (418)
Debt Securities, Available-for-sale, Fair Value | 7,052 | 6,958
financial instrument, short-term investments | 7,052 | 6,958
Interest-bearing Time Deposits [Member] |  |
Debt Securities, Available-for-sale, Adjusted Cost | 0 | 2,006
Debt Securities, Available-for-sale, Unrealized Gain | 0 | 0
Debt Securities, Available-for-sale, Unrealized Loss | 0 | (10)
Debt Securities, Available-for-sale, Fair Value | $ 0 | $ 1,996

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- Definition Amount, before tax, of unrealized loss 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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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