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Commitments and Contingent Liabilities - Notional Amount of Outstanding Commitments (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Commitments to extend credit [Member]
Loss Contingencies [Line Items]
Financial instrument of credit risk	$ 2,290,477	$ 2,517,905
Financial standby letters of credit [Member]
Loss Contingencies [Line Items]
Financial instrument of credit risk	14,493	14,300
Performance standby letters of credit [Member]
Loss Contingencies [Line Items]
Financial instrument of credit risk	17,926	17,194
Commercial letters of credit [Member]
Loss Contingencies [Line Items]
Financial instrument of credit risk	$ 152	$ 555

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- Definition

Notional amount of outstanding commitments and letters of credit.

+ References

No definition available.

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- 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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