Investments - Summary of Proceeds Received and The Gross Realized Gains and Losses From Sales of Equity Securities (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Debt and Equity Securities, FV-NI [Line Items]
Proceeds			$ 41,272	$ 27,736
Equity Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Proceeds	$ 6,099	$ 6,115	41,272	27,736
Gross Realized Gains	663	614	3,038	2,453
Gross Realized Losses	$ (467)	$ (29)	$ (1,133)	$ (580)

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