Reinsurance - Reinsurance Arrangements (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Insurance [Abstract]
Direct premiums written	$ 574,351	$ 531,988	$ 1,598,797	$ 1,489,216
Ceded premiums written		2,717
Ceded premiums written	(5,223)		(638,326)	(573,539)
Net premiums written	569,128	534,705	960,471	915,677
Direct premiums earned	507,745	474,311	1,480,466	1,393,003
Ceded premiums earned	(162,009)	(143,271)	(455,747)	(476,465)
Premiums earned, net	345,736	331,040	1,024,719	916,538
Direct losses and loss adjustment expenses	342,218	308,860	836,149	770,161
Ceded losses and loss adjustment expenses	(25,263)	(20,888)	(35,435)	(52,308)
Net Losses and Loss Adjustment Expenses	$ 316,955	$ 287,972	$ 800,714	$ 717,853

Amount of earned premiums ceded to other entities.

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