Related Party Transactions - Schedule of RISCOM Transactions (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Related Party Transaction [Line Items]
Net earned premium	$ 444,472	$ 295,542	$ 878,479	$ 595,908
Affiliated entity \| Agency agreement \| RISCOM
Related Party Transaction [Line Items]
Net earned premium	32,525	29,886	63,449	58,846
Commissions	$ 7,647	$ 7,533	$ 15,835	$ 15,165

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

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details