Related Party Transactions - Schedule of RISCOM Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Related Party Transaction [Line Items]
Net earned premium	$ 434,007	$ 300,366
Affiliated entity \| Agency agreement \| RISCOM
Related Party Transaction [Line Items]
Net earned premium	30,924	28,960
Commissions	$ 8,188	$ 7,632

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