Investments - Summary of Sources of Collateral Received and Various Investment Agreement in which Collateral Pledged (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Investment [Line Items]
Fair Value Of Securities Deposited With Governmental Authorities	$ 34,016	$ 22,861
Restricted Cash	$ 40,754	$ 17,669

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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