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Loans and Allowance for Loan Losses - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Gross loans | $ 2,412,699 | $ 1,808,484 |  |
Bad debts recovered | 1,383 | 718 | $ 310 |
Allowance for loan losses | 22,939 | 12,121 | 13,827 | $ 4,572
Increase in impaired financing receivable with no related allowance recorded investment | 35,400 |  |  |
Nonperforming trouble debt restructuring | 1,100 | 688 |  |
Increase in originated and purchased performing loans graded substandard | (4,322) | (12,919) |  |
Gain on sale of Paycheck Protection Program loans | 0 | 24,315 | $ 0 |
Commercial And Industrial [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Impaired financing receivable, with an allowance recorded, recorded investment | 37,300 |  |  |
Maximum [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Allowance for loan losses | 9,500 |  |  |
Minimum [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Allowance for loan losses | 8,500 |  |  |
Doubtful [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Gross loans | 0 | 0 |  |
Grade 5 Watch [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Gross loans | $ 143,207 | 77,821 |  |
Grade 5 Watch [Member] | Minimum [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loan To Value Ratio | 90.00% |  |  |
Grade 7 Substandard [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Gross loans | $ 58,404 | 37,315 |  |
Allowance for loan losses [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Financing receivable, allowance for credit loss, writeoff | 2,900 |  |  |
Paycheck Protection Program [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Gross loans | 11,967 | 30,742 |  |
Federal Home Loan Bank Advances [Member] | Asset Pledged As Collateral Without Right [Member] | Paycheck Protection Plan Liquidity Facility Advances [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loans pledged | 51 | 17,900 |  |
Federal Home Loan Bank Advances [Member] | Asset Pledged As Collateral Without Right [Member] | Commercial and Residential Mortgages [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loans pledged | $ 436,000 | $ 478,300 |  |

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