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Loans - Allowance for Credit Losses by Portfolio Segment as a Percentage of Recorded Total Allowance for Credit Losses and Aggregate Recorded Investment of Loans Receivable (Detail) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 69,163 | $ 69,462 | $ 67,313 | $ 71,523
Percentage of Total Allowance | 100.00% | 100.00% |  |
Total Loans | $ 6,257,744 | $ 6,182,434 |  |
Percentage of Total Loans | 100.00% | 100.00% |  |
Residential |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Total Loans | $ 939,285 | $ 962,661 |  |
Real Estate |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 43,694 | $ 45,499 |  |
Percentage of Total Allowance | 63.30% | 65.50% |  |
Total Loans | $ 4,871,373 | $ 4,852,400 |  |
Percentage of Total Loans | 77.90% | 78.50% |  |
Real Estate | Retail |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 10,226 | $ 10,264 |  |
Percentage of Total Allowance | 14.80% | 14.80% |  |
Total Loans | $ 1,087,433 | $ 1,107,360 |  |
Percentage of Total Loans | 17.40% | 17.90% |  |
Real Estate | Hospitality |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 13,971 | $ 15,534 |  |
Percentage of Total Allowance | 20.20% | 22.40% |  |
Total Loans | $ 819,017 | $ 740,519 |  |
Percentage of Total Loans | 13.10% | 12.00% |  |
Real Estate | Office |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 3,879 | $ 3,024 |  |
Percentage of Total Allowance | 5.60% | 4.40% |  |
Total Loans | $ 571,580 | $ 574,981 |  |
Percentage of Total Loans | 9.10% | 9.30% |  |
Real Estate | Other |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 8,004 | $ 8,663 |  |
Percentage of Total Allowance | 11.60% | 12.40% |  |
Total Loans | $ 1,369,294 | $ 1,366,534 |  |
Percentage of Total Loans | 21.90% | 22.10% |  |
Real Estate | Total commercial property loans |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 36,080 | $ 37,485 |  |
Percentage of Total Allowance | 52.20% | 54.00% |  |
Total Loans | $ 3,847,324 | $ 3,789,394 |  |
Percentage of Total Loans | 61.50% | 61.30% |  |
Real Estate | Construction |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 1,698 | $ 2,756 |  |
Percentage of Total Allowance | 2.50% | 4.00% |  |
Total Loans | $ 84,764 | $ 100,345 |  |
Percentage of Total Loans | 1.40% | 1.60% |  |
Real Estate | Residential |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 5,916 | $ 5,258 |  |
Percentage of Total Allowance | 8.60% | 7.50% |  |
Total Loans | $ 939,285 | $ 962,661 |  |
Percentage of Total Loans | 15.00% | 15.60% |  |
Commercial and Industrial |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 9,783 | $ 10,257 |  |
Percentage of Total Allowance | 14.00% | 14.80% |  |
Total Loans | $ 879,092 | $ 747,819 |  |
Percentage of Total Loans | 14.00% | 12.10% |  |
Equipment Financing Agreements |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance Amount | $ 15,686 | $ 13,706 |  |
Percentage of Total Allowance | 22.70% | 19.70% |  |
Total Loans | $ 507,279 | $ 582,215 |  |
Percentage of Total Loans | 8.10% | 9.40% |  |

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