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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Written Premiums
Assumed	$ 196,976	$ 148,919	$ 510,948	$ 361,367
Ceded	(68,643)	(49,581)	(179,710)	(121,639)
Net written premiums	128,333	99,338	331,238	239,728
Earned Premiums
Assumed	161,683	106,262	428,556	278,811
Ceded	(56,503)	(35,388)	(150,309)	(90,901)
Net earned premiums	105,180	70,874	278,247	187,910
Losses and Loss Adjustment Expenses
Assumed	102,805	63,631	272,011	166,021
Ceded	(34,981)	(20,835)	(90,849)	(52,357)
Net	$ 67,824	$ 42,796	$ 181,162	$ 113,664

Amount of earned premiums assumed from other entities.

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Amount of written premiums assumed from other entities.

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Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred.

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Amount of policy benefits and costs incurred for policies assumed.

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