Note 2 - Investments - Net Realized and Unrealized Investment Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Investments, Debt and Equity Securities [Abstract]
Gains on sales of fixed maturity securities	$ 29	$ 409	$ 36	$ 434
Gains on sales of equity securities	0	218	0	234
Total realized gains	29	627	36	668
Losses on sales of fixed maturity securities	(121)	(298)	(121)	(758)
Losses on sales of equity securities	0	(225)	0	(234)
Total realized losses	(121)	(523)	(121)	(992)
Net realized investment (losses) gains	(92)	104	(85)	(324)
Change in allowance for credit losses	0	0	0	244
Net unrealized gains on equity securities	6,353	5,659	4,259	3,327
Net unrealized gains on equity method investment	0	2,286	0	2,268
Net unrealized gains on other investments	492	257	686	453
Net realized and unrealized gains on investments	$ 6,753	$ 8,306	$ 4,860	$ 5,968

Amount of realized gain on investment in debt and equity securities.

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Amount of realized loss on investment in debt and equity securities.

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Amount of unrealized gain (loss) on investment in equity method security measured at fair value with change in fair value recognized in net income (FV-NI).

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Represents the amount of unrealized gain (loss) on other investments during the period.

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Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount of realized gain (loss) on investment in debt and equity securities.

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Amount of increase (decrease) in allowance for credit loss 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
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Amount of realized gain 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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Amount of realized loss 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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Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of realized loss from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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