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
Jun. 30, 2024
Dec. 31, 2023
Jun. 30, 2023
Dec. 31, 2022
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 67,729 $ 69,462 $ 71,024 $ 71,523
Percentage of Total Allowance 100.00% 100.00%    
Total Loans $ 6,176,359 $ 6,182,434    
Percentage of Total Loans 100.00% 100.00%    
Residential        
Financing Receivable Allowance For Credit Losses [Line Items]        
Total Loans $ 954,209 $ 962,661    
Real Estate        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 42,153 $ 45,499    
Percentage of Total Allowance 62.20% 65.50%    
Total Loans $ 4,842,714 $ 4,852,400    
Percentage of Total Loans 78.40% 78.50%    
Real Estate | Retail        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 10,126 $ 10,264    
Percentage of Total Allowance 15.00% 14.80%    
Total Loans $ 1,094,728 $ 1,107,360    
Percentage of Total Loans 17.70% 17.90%    
Real Estate | Hospitality        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 11,995 $ 15,534    
Percentage of Total Allowance 17.70% 22.40%    
Total Loans $ 754,600 $ 740,519    
Percentage of Total Loans 12.20% 12.00%    
Real Estate | Office        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 3,712 $ 3,024    
Percentage of Total Allowance 5.50% 4.40%    
Total Loans $ 572,532 $ 574,981    
Percentage of Total Loans 9.30% 9.30%    
Real Estate | Other        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 7,889 $ 8,663    
Percentage of Total Allowance 11.60% 12.40%    
Total Loans $ 1,360,139 $ 1,366,534    
Percentage of Total Loans 22.00% 22.10%    
Real Estate | Total commercial property loans        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 33,722 $ 37,485    
Percentage of Total Allowance 49.80% 54.00%    
Total Loans $ 3,781,999 $ 3,789,394    
Percentage of Total Loans 61.20% 61.30%    
Real Estate | Construction        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 2,371 $ 2,756    
Percentage of Total Allowance 3.50% 4.00%    
Total Loans $ 106,506 $ 100,345    
Percentage of Total Loans 1.70% 1.60%    
Real Estate | Residential        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 6,060 $ 5,258    
Percentage of Total Allowance 8.90% 7.50%    
Total Loans $ 954,209 $ 962,661    
Percentage of Total Loans 15.50% 15.60%    
Commercial and Industrial        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 10,563 $ 10,257    
Percentage of Total Allowance 15.60% 14.80%    
Total Loans $ 802,372 $ 747,819    
Percentage of Total Loans 13.00% 12.10%    
Equipment Financing Agreements        
Financing Receivable Allowance For Credit Losses [Line Items]        
Allowance Amount $ 15,013 $ 13,706    
Percentage of Total Allowance 22.20% 19.70%    
Total Loans $ 531,273 $ 582,215    
Percentage of Total Loans 8.60% 9.40%