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Note 2 - Investments (Tables) | 9 Months Ended
--- | ---
Mar. 31, 2024
Notes Tables |
Debt Securities, Available-for-Sale [Table Text Block] |
|  | March 31, 2024 |
Available-for-Sale Investments |  | Adjusted |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(In thousands) |  | Cost |  |  | Gain |  |  | Loss |  |  | Value |
Mutual Funds - Corporate & Government Debt |  | $ | 19,990 |  |  | $ | — |  |  | $ | (846 | ) |  | $ | 19,144 |
ETFs - Corporate & Government Debt |  |  | 7,375 |  |  |  | — |  |  |  | (323 | ) |  |  | 7,052 |
Time Deposits |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total |  | $ | 27,365 |  |  | $ | — |  |  | $ | (1,169 | ) |  | $ | 26,196 |
|  | June 30, 2023 |
Available-for-Sale Investments |  | Adjusted |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(In thousands) |  | Cost |  |  | Gain |  |  | Loss |  |  | Value |
Mutual Funds - Corporate & Government Debt |  | $ | 19,990 |  |  | $ | — |  |  | $ | (1,025 | ) |  | $ | 18,965 |
ETFs - Corporate & Government Debt |  |  | 7,376 |  |  |  | — |  |  |  | (418 | ) |  |  | 6,958 |
Time Deposits |  |  | 2,006 |  |  |  | — |  |  |  | (10 | ) |  |  | 1,996 |
Total |  | $ | 29,372 |  |  | $ | — |  |  | $ | (1,453 | ) |  | $ | 27,919 |
|  | Carrying Value |
|  | Short-Term Investments |
(In thousands) |  | March 31, 2024 |  |  | June 30, 2023 |
Money Market Funds |  |  |  |  |  |  |  |
Mutual Funds - Corporate & Government Debt |  | $ | 19,144 |  |  | $ | 18,965 |
ETFs - Corporate & Government Debt |  |  | 7,052 |  |  |  | 6,958 |
Time Deposits |  |  |  |  |  |  |  |
Maturities from 91-360 days |  |  | — |  |  |  | 1,996 |
Total |  | $ | 26,196 |  |  | $ | 27,919 |

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- Definition Tabular disclosure of 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/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
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