Loans and ACL - Summary of Amortized Cost of TLMs (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2025 USD ($) Loan	Jun. 30, 2024 USD ($) Loan
Loans and Leases Receivable Disclosure [Line Items]
Number of Loans, Term Extension and Deferral \| Loan	0	2
Number of Loans, Interest forgiveness \| Loan	1	0
Number of Loans, Payment Deferral \| Loan	1	2
Number of Loans \| Loan	2	4
Term Extension and Forbearance Amortized Cost \| $	$ 0	$ 16,929
Modified Interest Forgiveness Amortized Cost \| $	141	0
Payment Deferral Amortized Cost \| $	491	740
Total Modified Loan Amortized Cost \| $	$ 632	$ 17,669
Commercial and Industrial [Member] \| Term extension and Forbearance [Member]
Loans and Leases Receivable Disclosure [Line Items]
Number of Loans, Term Extension and Deferral \| Loan	0	2
Term Extension and Forbearance Amortized Cost \| $	$ 0	$ 16,929
Amortized Cost of Modified Loans to Gross Loans by Category	0.00%	4.22%
Commercial and Industrial [Member] \| Payment Deferral [Member]
Loans and Leases Receivable Disclosure [Line Items]
Number of Loans, Payment Deferral \| Loan	0	1
Payment Deferral Amortized Cost \| $	$ 0	$ 183
Amortized Cost of Modified Loans to Gross Loans by Category	0.00%	0.05%
Residential [Member] \| Interest Forgiveness [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Number of Loans, Interest forgiveness \| Loan	1	0
Modified Interest Forgiveness Amortized Cost \| $	$ 141	$ 0
Amortized Cost of Modified Loans to Gross Loans by Category	0.02%	0.00%
Residential [Member] \| Payment Deferral [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Number of Loans, Payment Deferral \| Loan	1	1
Payment Deferral Amortized Cost \| $	$ 491	$ 557
Amortized Cost of Modified Loans to Gross Loans by Category	0.07%	0.08%

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- Definition

Financing receivable modified number of loans.

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- Definition

Financing receivable modified payment deferral number of loans.

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- Definition

Financing receivable modified term extension and deferral number of loans.

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- Definition

Modified interest forgiveness amortized cost.

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- Definition

Modified Payment Deferral Amortization Cost

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- Definition

Modified term extension amortized cost of modified Loans to gross loans by category.

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Modified term extension and forbearance amortized cost.

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- Definition

Total modified loan amortized cost

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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.

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