Quarterly report pursuant to Section 13 or 15(d)

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)

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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
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%