Premiums and Reinsurance Related Information - Schedule of Reinsurance Effects on Written and Earned Premiums and Losses and Loss Adjustment Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Written Premiums
Assumed	$ 256,429	$ 231,515	$ 771,064	$ 638,724
Ceded	(106,554)	(82,492)	(299,823)	(224,079)
Net written premiums	149,875	149,023	471,241	414,645
Earned Premiums
Assumed	241,724	197,785	680,686	549,446
Ceded	(91,492)	(69,378)	(249,693)	(192,086)
Net earned premiums	150,232	128,407	430,993	357,360
Losses and Loss Adjustment Expenses
Assumed	160,352	128,807	451,148	360,072
Ceded	(59,304)	(44,199)	(161,673)	(123,137)
Net	$ 101,048	$ 84,608	$ 289,475	$ 236,935

Amount of earned premiums assumed from other entities.

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