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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 | Mar. 31, 2024 | Dec. 31, 2023
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Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 68,270 | $ 69,462
Percentage of Total Allowance | 100.00% | 100.00%
Total Loans | $ 6,177,840 | $ 6,182,434
Percentage of Total Loans | 100.00% | 100.00%
Residential |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total Loans |  | $ 962,661
Real Estate |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 42,584 | $ 45,499
Percentage of Total Allowance | 62.40% | 65.50%
Total Loans | $ 4,849,039 | $ 4,852,400
Percentage of Total Loans | 78.50% | 78.50%
Real Estate | Retail |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 10,095 | $ 10,264
Percentage of Total Allowance | 14.80% | 14.80%
Total Loans | $ 1,091,059 | $ 1,107,360
Percentage of Total Loans | 17.70% | 17.90%
Real Estate | Hospitality |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 11,668 | $ 15,534
Percentage of Total Allowance | 17.10% | 22.40%
Total Loans | $ 740,160 | $ 740,519
Percentage of Total Loans | 12.00% | 12.00%
Real Estate | Office |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 3,740 | $ 3,024
Percentage of Total Allowance | 5.50% | 4.40%
Total Loans | $ 575,847 | $ 574,981
Percentage of Total Loans | 9.30% | 9.30%
Real Estate | Other |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 8,270 | $ 8,663
Percentage of Total Allowance | 12.10% | 12.40%
Total Loans | $ 1,367,395 | $ 1,366,534
Percentage of Total Loans | 22.10% | 22.10%
Real Estate | Total commercial property loans |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 33,773 | $ 37,485
Percentage of Total Allowance | 49.50% | 54.00%
Total Loans | $ 3,774,461 | $ 3,789,394
Percentage of Total Loans | 61.10% | 61.30%
Real Estate | Construction |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 2,611 | $ 2,756
Percentage of Total Allowance | 3.80% | 4.00%
Total Loans | $ 104,216 | $ 100,345
Percentage of Total Loans | 1.70% | 1.60%
Real Estate | Residential |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 6,200 | $ 5,258
Percentage of Total Allowance | 9.10% | 7.50%
Total Loans | $ 970,362 | $ 962,661
Percentage of Total Loans | 15.70% | 15.60%
Commercial and Industrial |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 11,836 | $ 10,257
Percentage of Total Allowance | 17.30% | 14.80%
Total Loans | $ 774,851 | $ 747,819
Percentage of Total Loans | 12.50% | 12.10%
Equipment Financing Agreements |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 13,850 | $ 13,706
Percentage of Total Allowance | 20.30% | 19.70%
Total Loans | $ 553,950 | $ 582,215
Percentage of Total Loans | 9.00% | 9.40%

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