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Loans and ACL - Summary of Impaired Financing Receivables (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2022
Financing Receivable Impaired [Line Items] |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment |  | $ 73,643
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance |  | 73,660
Impaired financing receivable, related allowance |  | 11,606
Impaired financing receivable, average recorded investment | $ 22,488 |
Impaired financing receivable, interest income recognized | 124 |
Commercial and Industrial [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment |  | 1,269
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance |  | 1,289
Impaired financing receivable, related allowance |  | 11,605
Impaired financing receivable, with an allowance recorded, recorded investment |  | 66,386
Impaired financing receivable, with an allowance recorded, unpaid principal balance |  | 66,386
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 5,305 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 62 |
Impaired financing receivable, with an allowance recorded, interest income recognized | 0 |
Impaired financing receivable, with an allowance recorded, average recorded investment | 3,290 |
Real Estate [Member] | Mortgage, Commercial [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment |  | 4,507
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance |  | 4,504
Impaired financing receivable, related allowance |  | 1
Impaired financing receivable, with an allowance recorded, recorded investment |  | 126
Impaired financing receivable, with an allowance recorded, unpaid principal balance |  | 126
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 11,880 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 48 |
Impaired financing receivable, with an allowance recorded, interest income recognized | 0 |
Impaired financing receivable, with an allowance recorded, average recorded investment | 88 |
Real Estate [Member] | Construction, commercial [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment |  | 521
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance |  | 521
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 524 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 0 |
Real Estate [Member] | Mortgage, Residential [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Impaired financing receivable, with no specific allowance recorded, recorded investment |  | 834
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance |  | $ 834
Impaired financing receivable, with no specific allowance recorded, average recorded investment | 1,342 |
Impaired financing receivable, with no specific allowance recorded, interest income recognized | 14 |
Impaired financing receivable, with an allowance recorded, interest income recognized | 0 |
Impaired financing receivable, with an allowance recorded, average recorded investment | $ 59 |

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