Loans and Allowance For Credit Losses - Summary of Type of Concession Granted and the Financial Effect of the Modification (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2024 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Amortized Cost	$ 14,706
Commercial And Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized Cost	$ 11,065
% of Total Portfolio Segment	1.81%
Commercial And Industrial [Member] \| Minimum [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financial Effect	0 months
Commercial And Industrial [Member] \| Maximum [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financial Effect	0 months
Commercial and Industrial Sector [Member]
Loans and Leases Receivable Disclosure [Line Items]
Amortized Cost	$ 3,641
% of Total Portfolio Segment	0.60%
Commercial and Industrial Sector [Member] \| Minimum [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financial Effect	0 months
Commercial and Industrial Sector [Member] \| Maximum [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financial Effect	0 months

Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

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- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

+ Details

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- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

+ Details

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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

No definition available.

+ Details

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