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Note 2 - Investments - Unrealized Gains and Losses (Details) - USD ($) $ in Thousands | 3 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021
Net gains (losses) recognized during the period on equity securities |  | $ (1,917) | $ (549)
Less: Net gains (losses) recognized during the period on equity securities sold during the period |  | 0 | 1,809
Net unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date (1) | [1] | $ (1,917) | $ (2,358)
[1] | Includes $1.8 million for the three months ended September 30, 2022, of net losses as a result of the measurement alternative. There were no net gains (losses) as a result of the measurement alternative for the three months ended September 30, 2021.

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- Definition Amount of unrealized and realized gain (loss) on investment in debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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- Definition Amount of unrealized and realized gain (loss) on investment in debt and equity securities, excluding other-than-temporary impairment (OTTI). + References No definition available. + Details
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- Definition Amount of unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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