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Note 2 - Investments - Net Realized and Unrealized Investment Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Gains on sales of fixed maturity securities	$ 409	$ 18	$ 434	$ 18
Gains on sales of equity securities	218	0	234	0
Total realized gains	627	18	668	18
Losses on sales of fixed maturity securities	(298)	0	(758)	(2)
Losses on sales of equity securities	(225)	0	(234)	(1,204)
Total realized losses	(523)	0	(992)	(1,206)
Net realized investment gains (losses)	104	18	(324)	(1,188)
Change in allowance for credit losses	0	(327)	244	(327)
Net unrealized gains on equity securities	2,286	(245)	2,268	(266)
Net unrealized gains (losses) on equity method investment	5,659	388	3,327	4,617
Net unrealized gains on other investments	257	198	453	198
Net realized and unrealized gains on investments	$ 8,306	$ 32	$ 5,968	$ 3,034

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

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