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Loans and ACL - Summary of Modified Loans (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($) Loan
Loans and Leases Receivable Disclosure [Line Items]
Recorded Investment	$ 19,855
Recorded Investment of Modified Loans to Gross Loans by Category	0.88%
Modified term extension and forbearance financial effect	Forbearance agreements
Modified term payment deferral financial effect	Payment deferral 6-9 months
Total modified loan units | Loan	8
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Recorded Investment	$ 19,017
Commercial and Industrial [Member] | Term extension and Forbearance [Member]
Loans and Leases Receivable Disclosure [Line Items]
Modified term extension and forbearance loan units | Loan	4
Recorded Investment	$ 18,834
Recorded Investment of Modified Loans to Gross Loans by Category	4.69%
Commercial and Industrial [Member] | Payment Deferral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Modified term extension and forbearance loan units | Loan	1
Recorded Investment	$ 183
Recorded Investment of Modified Loans to Gross Loans by Category	0.05%
Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Recorded Investment	$ 683
Residential [Member] | Term extension and Forbearance [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Modified term extension and forbearance loan units | Loan	1
Recorded Investment	$ 126
Recorded Investment of Modified Loans to Gross Loans by Category	0.02%
Residential [Member] | Payment Deferral [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Modified term extension and forbearance loan units | Loan	1
Recorded Investment	$ 557
Recorded Investment of Modified Loans to Gross Loans by Category	0.08%
Construction, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Recorded Investment	$ 155
Construction, Residential [Member] | Term extension and Forbearance [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Modified term extension and forbearance loan units | Loan	1
Recorded Investment	$ 155
Recorded Investment of Modified Loans to Gross Loans by Category	0.28%

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-Topic 310
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-Name Accounting Standards Codification
-Section 55
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-Publisher FASB
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