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Loans and Allowance for Loan Losses - Summary of Impaired Financing Receivables (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Financing Receivable Impaired [Line Items] |  |  |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | $ 18,898 |  | $ 18,898 |  | $ 9,733
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 25,222 |  | 25,222 |  | 10,388
Impaired financing receivable, related allowance | 375 |  | 375 |  | 879
Impaired financing receivable, average recorded investment | 24,666 | $ 7,230 | 23,579 | $ 7,375 |
Impaired financing receivable, interest income recognized | 163 | 84 | 287 | 169 |
Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | 4,290 |  | 4,290 |  |
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 8,061 |  | 8,061 |  |
Impaired financing receivable, related allowance | 360 |  | 360 |  | 836
Impaired financing receivable, with an allowance recorded, recorded investment | 3,568 |  | 3,568 |  | 4,612
Impaired financing receivable, with an allowance recorded, unpaid principal balance | 5,875 |  | 5,875 |  | 4,612
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 6,203 | 4,324 | 5,754 | 4,409 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 12 | 49 | 74 | 99 |
Impaired financing receivable, with an allowance recorded, interest income recognized | 33 | 0 | 33 | 0 |
Impaired financing receivable, with an allowance recorded, average recorded investment | 6,619 | 0 | 4,955 | 0 |
Real Estate [Member] | Mortgage, Commercial [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | 5,973 |  | 5,973 |  |
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 6,229 |  | 6,229 |  |
Impaired financing receivable, related allowance | 1 |  | 1 |  | 1
Impaired financing receivable, with an allowance recorded, recorded investment | 3,040 |  | 3,040 |  | 3,194
Impaired financing receivable, with an allowance recorded, unpaid principal balance | 3,039 |  | 3,039 |  | 3,849
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 6,254 | 185 | 9,067 | 210 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 100 | 3 | 148 | 7 |
Impaired financing receivable, with an allowance recorded, interest income recognized | 2 | 17 | 2 | 34 |
Impaired financing receivable, with an allowance recorded, average recorded investment | 3,570 | 1,207 | 1,829 | 1,211 |
Real Estate [Member] | Construction, commercial [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | 527 |  | 527 |  | 527
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 521 |  | 521 |  | 527
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 521 | 537 | 523 | 539 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 8 | 8 | 8 | 16 |
Real Estate [Member] | Mortgage, Residential [Member] |  |  |  |  |
Financing Receivable Impaired [Line Items] |  |  |  |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment | 1,442 |  | 1,442 |  |
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance | 1,439 |  | 1,439 |  |
Impaired financing receivable, related allowance | 14 |  | 14 |  | 42
Impaired financing receivable, with an allowance recorded, recorded investment | 58 |  | 58 |  | 1,400
Impaired financing receivable, with an allowance recorded, unpaid principal balance | 58 |  | 58 |  | $ 1,400
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 1,441 | 920 | 1,392 | 890 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 3 | 7 | 17 | 13 |
Impaired financing receivable, with an allowance recorded, interest income recognized | 5 | 0 | 5 | 0 |
Impaired financing receivable, with an allowance recorded, average recorded investment | $ 58 | $ 57 | $ 59 | $ 116 |

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