Collateralized Transactions (Detail) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Securities Financing Transactions Disclosures [Abstract]
Repurchase agreements	$ 6,581,000	$ 0
Reverse repurchase agreements	$ 0	$ 0

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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