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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, 2025 | Dec. 31, 2024
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Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 70,597 | $ 70,147
Percentage of Total Allowance | 100.00% | 100.00%
Total Loans | $ 6,282,189 | $ 6,251,377
Percentage of Total Loans | 100.00% | 100.00%
Residential |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total Loans | $ 979,536 | $ 951,302
Real Estate |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 51,303 | $ 45,099
Percentage of Total Allowance | 72.80% | 64.30%
Total Loans | $ 4,955,187 | $ 4,900,924
Percentage of Total Loans | 79.00% | 78.50%
Real Estate | Retail |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 9,404 | $ 10,171
Percentage of Total Allowance | 13.30% | 14.50%
Total Loans | $ 1,109,097 | $ 1,068,978
Percentage of Total Loans | 17.70% | 17.10%
Real Estate | Hospitality |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 7,128 | $ 15,302
Percentage of Total Allowance | 10.10% | 21.80%
Total Loans | $ 845,275 | $ 848,134
Percentage of Total Loans | 13.50% | 13.60%
Real Estate | Office |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 11,536 | $ 3,935
Percentage of Total Allowance | 16.30% | 5.60%
Total Loans | $ 563,957 | $ 568,861
Percentage of Total Loans | 9.00% | 9.10%
Real Estate | Other |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 12,278 | $ 8,243
Percentage of Total Allowance | 17.50% | 11.80%
Total Loans | $ 1,378,746 | $ 1,385,051
Percentage of Total Loans | 21.80% | 22.20%
Real Estate | Total commercial property loans |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 40,346 | $ 37,651
Percentage of Total Allowance | 57.20% | 53.70%
Total Loans | $ 3,897,075 | $ 3,871,024
Percentage of Total Loans | 62.00% | 62.00%
Real Estate | Construction |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 1,021 | $ 1,664
Percentage of Total Allowance | 1.40% | 2.40%
Total Loans | $ 78,576 | $ 78,598
Percentage of Total Loans | 1.30% | 1.30%
Real Estate | Residential |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 9,936 | $ 5,784
Percentage of Total Allowance | 14.20% | 8.20%
Total Loans | $ 979,536 | $ 951,302
Percentage of Total Loans | 15.70% | 15.20%
Commercial and Industrial |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 6,242 | $ 10,006
Percentage of Total Allowance | 8.70% | 14.30%
Total Loans | $ 854,406 | $ 863,431
Percentage of Total Loans | 13.50% | 13.80%
Equipment Financing Agreements |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 13,052 | $ 15,042
Percentage of Total Allowance | 18.50% | 21.40%
Total Loans | $ 472,596 | $ 487,022
Percentage of Total Loans | 7.50% | 7.70%

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