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Loans and Allowance for Loan Losses - Summary of Impaired Financing Receivables (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Financing Receivable Impaired [Line Items] |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | $ 20,038 |  | $ 9,733
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 23,518 |  | 10,388
Impaired financing receivable, related allowance | 656 |  | 879
Impaired financing receivable, average recorded investment | 22,488 | $ 5,759 |
Impaired financing receivable, interest income recognized | 124 | 63 |
Commercial and Industrial [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | 3,521 |  |
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 6,054 |  |
Impaired financing receivable, related allowance | 640 |  | 836
Impaired financing receivable, with an allowance recorded, recorded investment | 3,287 |  | 4,612
Impaired financing receivable, with an allowance recorded, unpaid principal balance | 3,285 |  | 4,612
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 5,305 | 3,250 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 62 | 35 |
Impaired financing receivable, with an allowance recorded, interest income recognized | 0 | 0 |
Impaired financing receivable, with an allowance recorded, average recorded investment | 3,290 | 0 |
Real Estate [Member] | Mortgage, Commercial [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | 11,216 |  |
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 12,172 |  |
Impaired financing receivable, related allowance | 1 |  | 1
Impaired financing receivable, with an allowance recorded, recorded investment | 88 |  | 3,194
Impaired financing receivable, with an allowance recorded, unpaid principal balance | 87 |  | 3,849
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 11,880 | 1,384 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 48 | 14 |
Impaired financing receivable, with an allowance recorded, interest income recognized | 0 | 0 |
Impaired financing receivable, with an allowance recorded, average recorded investment | 88 | 0 |
Real Estate [Member] | Construction, Commercial [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | 523 |  | 527
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 522 |  | 527
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 524 | 542 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 0 | 8 |
Real Estate [Member] | Mortgage, Residential [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | 1,345 |  |
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 1,339 |  |
Impaired financing receivable, related allowance | 15 |  | 42
Impaired financing receivable, with an allowance recorded, recorded investment | 58 |  | 1,400
Impaired financing receivable, with an allowance recorded, unpaid principal balance | 59 |  | $ 1,400
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 1,342 | 583 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 14 | 6 |
Impaired financing receivable, with an allowance recorded, interest income recognized |  | 0 |
Impaired financing receivable, with an allowance recorded, average recorded investment | $ 59 | $ 0 |

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