Reinsurance - Summary of Effects of Reinsurance on Premiums Written and Earned (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Net premiums written:
Direct	$ 263,081	$ 255,160
Assumed	7,305	1,571
Ceded	(32,761)	(26,428)
Net premiums written	237,625	230,303
Net premiums earned:
Direct	270,242	265,604
Assumed	7,305	1,571
Ceded	(32,761)	(26,428)
Net premiums earned	$ 244,786	$ 240,747

Amount of earned premiums assumed from other entities.

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Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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