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Note 3 - Investments (Tables)

12 Months Ended

Dec. 31, 2025

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

The Company’s available‑for‑sale investments are summarized as follows:

		Amortized				Gross				Gross				Allowance
		Cost or				Unrealized				Unrealized				for Credit				Fair
December 31, 2025		Cost				Gains				Losses				Losses				Value
		($ in thousands)
Fixed maturities:
U.S. Governments		$	23,716			$	97			$	(226	)		$	—			$	23,587
U.S. States, Territories, and Political Subdivisions			19,745				111				(994	)			—				18,862
Special revenue excluding mortgage/asset-backed securities			19,280				72				(1,887	)			—				17,465
Corporate and other			606,748				9,891				(8,404	)			—				608,235
Mortgage/asset-backed securities			558,116				5,922				(8,000	)			—				556,038
Total available-for-sale investments		$	1,227,605			$	16,093			$	(19,511	)		$	—			$	1,224,187

		Amortized				Gross				Gross				Allowance
		Cost or				Unrealized				Unrealized				for Credit				Fair
December 31, 2024		Cost				Gains				Losses				Losses				Value
		($ in thousands)
Fixed maturities:
U.S. Governments		$	33,449			$	6			$	(649	)		$	—			$	32,806
U.S. States, Territories, and Political Subdivisions			10,606				29				(857	)			—				9,778
Special revenue excluding mortgage/asset-backed securities			30,283				85				(3,734	)			—				26,634
Corporate and other			492,395				1,689				(18,349	)			(244	)			475,491
Mortgage/asset-backed securities			406,597				1,408				(13,668	)			—				394,337
Total available-for-sale investments		$	973,330			$	3,217			$	(37,257	)		$	(244	)		$	939,046

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

The aggregate fair value and gross unrealized losses of the Company’s investments aggregated by investment category and the length of time these individual securities have been in a continuous unrealized loss position as of December 31, 2025 and 2024, are as follows:

		Less Than 12 Months								More Than 12 Months								Total
		Fair				Unrealized				Fair				Unrealized				Fair				Unrealized
December 31, 2025		Value				Losses				Value				Losses				Value				Losses
		($ in thousands)
Fixed maturity securities:
U.S. Governments		$	2,006			$	(38	)		$	5,704			$	(188	)		$	7,710			$	(226	)
U.S. States, Territories, and Political Subdivisions			5,157				(441	)			9,509				(553	)			14,666				(994	)
Special revenue excluding mortgage/asset-backed securities			—				—				15,185				(1,887	)			15,185				(1,887	)
Corporate and other			49,963				(948	)			160,780				(7,456	)			210,743				(8,404	)
Mortgage/asset-backed securities			47,313				(406	)			79,733				(7,594	)			127,046				(8,000	)
Total available-for-sale investments		$	104,439			$	(1,833	)		$	270,911			$	(17,678	)		$	375,350			$	(19,511	)

		Less Than 12 Months								More Than 12 Months								Total
		Fair				Unrealized				Fair				Unrealized				Fair				Unrealized
December 31, 2024		Value				Losses				Value				Losses				Value				Losses
		($ in thousands)
Fixed maturity securities:
U.S. Governments		$	16,507			$	(65	)		$	14,291			$	(584	)		$	30,798			$	(649	)
U.S. States, Territories, and Political Subdivisions			2,614				(419	)			5,076				(438	)			7,690				(857	)
Special revenue excluding mortgage/asset-backed securities			2,182				(426	)			21,733				(3,308	)			23,915				(3,734	)
Corporate and other			181,179				(4,996	)			176,531				(13,353	)			357,710				(18,349	)
Mortgage/asset-backed securities			152,287				(2,820	)			91,572				(10,848	)			243,859				(13,668	)
Total available-for-sale investments		$	354,769			$	(8,726	)		$	309,203			$	(28,531	)		$	663,972			$	(37,257	)

Investments Classified by Contractual Maturity Date [Table Text Block]

The amortized cost and fair value of fixed maturity securities at December 31, 2025, by contractual maturity, are shown below.

		Amortized				Fair
		Cost				Value
		($ in thousands)
Due within one year		$	62,232			$	62,241
Due after one year through five years			267,553				267,430
Due after five years through ten years			226,631				229,466
Due after ten years			113,073				109,012
Mortgage and asset-backed securities			558,116				556,038
		$	1,227,605			$	1,224,187

Unrealized Gain (Loss) on Fixed Maturity Securities [Table Text Block]

The following table presents the change in net unrealized gains or losses on fixed maturity securities:

		Year Ended December 31,
		2025				2024				2023
		($ in thousands)
Change in net unrealized gains (losses)
Fixed maturities		$	30,866			$	(2,953	)		$	15,185
Net increase (decrease)		$	30,866			$	(2,953	)		$	15,185

Investment Income [Table Text Block]

Net investment income is summarized as follows:

		Year Ended December 31,
		2025				2024				2023
		($ in thousands)
Interest income		$	55,164			$	35,433			$	23,349
Dividend income			1,869				1,075				871
Investment expense			(1,028	)			(684	)			(515	)
Net investment income		$	56,005			$	35,824			$	23,705

Gain (Loss) on Securities [Table Text Block]

The following table presents net realized and unrealized investment gains and losses:

		Year Ended
		December 31,
		2025				2024				2023
		($ in thousands)
Realized gains:
Gains on sales of fixed maturity securities		$	605			$	179			$	89
Gains on sales of equity securities			104				20				—
Total realized gains			709				199				89
Realized losses:
Losses on sales of fixed maturity securities			(768	)			(2,489	)			(32	)
Losses on sales of equity securities			(105	)			—				—
Total realized losses			(873	)			(2,489	)			(32	)
Net realized investment gains (losses)			(164	)			(2,290	)			57
Change in allowance for credit losses			244				659				(667	)
Net unrealized gains on equity securities			8,021				6,161				3,933
Net unrealized losses on equity method investment			2,268				(340	)			(382	)
Net unrealized gains on other investments			1,462				378				—
Net realized and unrealized gains on investments		$	11,831			$	4,568			$	2,941

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