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v3.23.3

Loans and ACL - Additional Information (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) Loan | Jan. 01, 2023 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loans and lease reserve | $ 49,631 | $ 38,567 | $ 20,534 | $ 38,567 | $ 49,631 | $ 38,567 | $ 20,534 | $ 30,740 | [1] |  | $ 17,242 | $ 12,121
Charge-offs |  |  |  |  | 12,900 |  |  |  |  |  |  |
Gross loans | 2,445,885 |  |  |  | 2,445,885 |  |  | $ 2,412,699 |  |  |  |
Interest income from nonaccrual loans | 0 |  |  |  | 89 |  |  |  |  |  |  |
Number of doubtful loans | Loan |  |  |  |  |  |  |  | 0 |  |  |  |
Loans pledged | 2,445,885 |  |  |  | 2,445,885 |  |  |  |  |  |  |
Nonperforming trouble debt restructuring |  |  |  |  |  |  |  | $ 38,300 |  |  |  |
Amortized Cost of PCD Loans |  |  |  |  | 56,600 |  |  |  |  |  |  |
Non-Credit Discount on PCD Loans |  |  |  |  | 4,500 |  |  |  |  |  |  |
Allowance for Loan and Lease Losses, Writeoff | 2,581 |  | 748 |  | 12,910 |  | 6,315 |  |  |  |  |
Mortgage loans with amortized cost |  |  |  |  | 974 |  |  | 0 |  |  |  |
Amortized cost of ACL related to PCD loans |  |  |  |  | 556 |  |  |  |  |  |  |
Cash payments received |  |  |  | 4,500 |  |  |  |  |  |  |  |
Nonaccrual | 77,858 |  |  |  | 77,858 |  |  | 76,049 |  |  |  |
January 1, 2023 Post-ASC 326 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loans and lease reserve | 7,400 |  |  |  | 7,400 |  |  |  |  | $ 38,158 |  |
Nonaccrual [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Amortized Cost Of Loans Modified Nonaccrual Status |  |  |  |  | 48,053 |  |  |  |  |  |  |
Risk Grade 8 |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Attributable to specific reserve |  |  |  |  | 48,200 |  |  |  |  |  |  |
Loans pledged | 50,989 |  |  |  | 50,989 |  |  |  |  |  |  |
Commercial and industrial loan amount |  |  |  |  | 51,000 |  |  |  |  |  |  |
Collective specific reserve |  |  |  |  | 21,800 |  |  |  |  |  |  |
Grade 5 Pass/Watch [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross loans |  |  |  |  |  |  |  | 136,557 |  |  |  |
Paycheck Protection Plan Liquidity Facility Advances [Member] | Asset Pledged as Collateral without Right [Member] | Federal Home Loan Bank Advances [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loans pledged | 0 |  |  |  | 0 |  |  | 51 |  |  |  |
Collateral Pledged [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loans and lease reserve | 9,300 |  |  |  | $ 9,300 |  |  |  |  |  |  |
Minimum [Member] | Grade 5 Pass/Watch [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loan To Value Ratio |  |  |  |  | 90.00% |  |  |  |  |  |  |
Commercial Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Attributable to specific reserve |  | 7,000 |  |  |  |  |  |  |  |  |  |
Commercial and Residential Mortgages [Member] | Asset Pledged as Collateral without Right [Member] | Federal Home Loan Bank Advances [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loans pledged | 765,700 |  |  |  | $ 765,700 |  |  | 436,000 |  |  |  |
Commercial and Industrial [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Modified term extension and forbearance amortized cost |  | 32,800 |  |  | 32,750 |  |  |  |  |  |  |
Loans and lease reserve | 41,026 | $ 29,864 |  | $ 29,864 | 41,026 | 29,864 |  | 27,070 |  |  |  |
Gross loans | 532,999 |  |  |  | 532,999 |  |  | 590,049 |  |  |  |
Loans pledged | 532,999 |  |  |  | 532,999 |  |  |  |  |  |  |
Allowance for Loan and Lease Losses, Writeoff | 1,832 |  | $ 31 |  | 9,927 |  | $ 4,958 |  |  |  |  |
Nonaccrual | 54,889 |  |  |  | 54,889 |  |  | 68,039 |  |  |  |
Commercial and Industrial [Member] | January 1, 2023 Post-ASC 326 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loans and lease reserve | 7,400 |  |  |  | 7,400 |  |  |  |  |  |  |
Commercial and Industrial [Member] | Nonaccrual [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Amortized Cost Of Loans Modified Nonaccrual Status |  |  |  |  | 35,864 | $ 32,750 |  |  |  |  |  |
Commercial and Industrial [Member] | Risk Grade 8 |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loans pledged | 50,989 |  |  |  | 50,989 |  |  |  |  |  |  |
Paycheck Protection Program [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross loans | 6,414 |  |  |  | 6,414 |  |  | $ 11,967 |  |  |  |
Loans pledged | $ 6,414 |  |  |  | $ 6,414 |  |  |  |  |  |  |
[1] | Derived from audited December 31, 2022 Consolidated Financial Statements.

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