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Loans and ACL - Summary of Aging Analysis of Amortized Cost of Loans Designated as TLMs (Detail) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | $ 10,910 | $ 8,930
Commercial and Industrial [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 5,174 | 3,299
Residential Construction [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 154 | 155
Commercial [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 4,753 | 4,772
Residential [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 821 | 694
Consumer loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 8 | 10
Current Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 2,814 | 2,676
Current Loans [Member] | Commercial and Industrial [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 723 | 554
Current Loans [Member] | Residential Construction [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 155
Current Loans [Member] | Commercial [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 1,761 | 1,773
Current Loans [Member] | Residential [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 330 | 194
Current Loans [Member] | Consumer loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
30-89 Days Past Due [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 154 | 0
30-89 Days Past Due [Member] | Commercial and Industrial [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
30-89 Days Past Due [Member] | Residential Construction [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 154 | 0
30-89 Days Past Due [Member] | Commercial [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
30-89 Days Past Due [Member] | Residential [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
30-89 Days Past Due [Member] | Consumer loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
Greater than 90 Days Past Due & Accruing [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
Greater than 90 Days Past Due & Accruing [Member] | Commercial and Industrial [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
Greater than 90 Days Past Due & Accruing [Member] | Residential Construction [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
Greater than 90 Days Past Due & Accruing [Member] | Commercial [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
Greater than 90 Days Past Due & Accruing [Member] | Residential [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
Greater than 90 Days Past Due & Accruing [Member] | Consumer loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
Non Accrual [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 7,942 | 6,254
Non Accrual [Member] | Commercial and Industrial [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 4,451 | 2,745
Non Accrual [Member] | Residential Construction [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 0 | 0
Non Accrual [Member] | Commercial [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 2,992 | 2,999
Non Accrual [Member] | Residential [Member] | Real Estate Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | 491 | 500
Non Accrual [Member] | Consumer loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Modified in Period, Amount | $ 8 | $ 10

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