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Note 6 - Investments - Gross Realized Gains and Losses on Available-for-sale Investments, Limited Liability Investment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Net realized (losses) gains | $ (5) | $ 958 | $ 52 | $ 1,359
Fixed Maturities [Member] |  |  |  |
Gross realized gains | 0 | 0 | 0 | 0
Gross realized losses | (9) | 0 | (85) | 0
Realized gains (losses) | (9) | 0 | (85) | 0
Limited Liability Investments, Fair Value [Member] |  |  |  |
Realized gains (losses) | 34 | 874 | 129 | 1,260
Private Company Investments [Member] |  |  |  |
Realized gains (losses) | $ (30) | $ 84 | $ 8 | $ 99

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- Definition The amount of realized investment gains and (losses). + References No definition available. + Details
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- Definition Represents realized investment losses. + References No definition available. + Details
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- Definition Amount of realized gain (loss) on investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
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