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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, 2023 | Dec. 31, 2022
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Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 67,313 | $ 71,523
Percentage of Total Allowance | 100.00% | 100.00%
Total Loans | $ 6,020,785 | $ 5,967,133
Percentage of Total Loans | 100.00% | 100.00%
Residential |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total Loans | $ 926,326 | $ 734,472
Real Estate |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 43,836 | $ 44,026
Percentage of Total Allowance | 65.10% | 61.60%
Total Loans | $ 4,699,341 | $ 4,567,853
Percentage of Total Loans | 78.10% | 76.60%
Real Estate | Retail |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 10,083 | $ 7,872
Percentage of Total Allowance | 15.00% | 11.00%
Total Loans | $ 1,097,650 | $ 1,023,608
Percentage of Total Loans | 18.30% | 17.20%
Real Estate | Hospitality |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 15,083 | $ 13,407
Percentage of Total Allowance | 22.40% | 18.70%
Total Loans | $ 705,735 | $ 646,893
Percentage of Total Loans | 11.70% | 10.80%
Real Estate | Office |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 2,884 | $ 2,293
Percentage of Total Allowance | 4.30% | 3.20%
Total Loans | $ 575,319 | $ 499,946
Percentage of Total Loans | 9.60% | 8.40%
Real Estate | Other |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 8,321 | $ 13,056
Percentage of Total Allowance | 12.30% | 18.30%
Total Loans | $ 1,309,507 | $ 1,553,729
Percentage of Total Loans | 21.70% | 26.00%
Real Estate | Total commercial property loans |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 36,371 | $ 36,628
Percentage of Total Allowance | 54.00% | 51.20%
Total Loans | $ 3,688,211 | $ 3,724,176
Percentage of Total Loans | 61.30% | 62.40%
Real Estate | Construction |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 2,594 | $ 4,022
Percentage of Total Allowance | 3.90% | 5.70%
Total Loans | $ 84,804 | $ 109,205
Percentage of Total Loans | 1.40% | 1.80%
Real Estate | Residential |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 4,871 | $ 3,376
Percentage of Total Allowance | 7.20% | 4.70%
Total Loans | $ 926,326 | $ 734,472
Percentage of Total Loans | 15.40% | 12.40%
Commercial and Industrial |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 11,242 | $ 15,267
Percentage of Total Allowance | 16.70% | 21.30%
Total Loans | $ 728,792 | $ 804,492
Percentage of Total Loans | 12.10% | 13.40%
Equipment Financing Agreements |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Allowance Amount | $ 12,235 | $ 12,230
Percentage of Total Allowance | 18.20% | 17.10%
Total Loans | $ 592,652 | $ 594,788
Percentage of Total Loans | 9.80% | 10.00%

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