Repurchase Agreements - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Securities Financing Transaction [Line Items]
Pledged securities with carrying value to collateralize its repurchase agreements	$ 338.5	$ 289.2

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-20

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