Fair Value Measurement - Additional Information (Detail)	6 Months Ended	12 Months Ended
Jun. 30, 2024	Dec. 31, 2023
Schedule Of Available For Sale Securities [Line Items]
Average contractual maturity period	22 years	23 years
Investment, Type [Extensible Enumeration]	Collateralized Mortgage-Backed Securities [Member]	Collateralized Mortgage-Backed Securities [Member]

Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company.

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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.

+ References

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+ Details