Quarterly report [Sections 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)

v3.25.3
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, 2025
Dec. 31, 2024
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 69,781 $ 70,147
Percentage of Total Allowance 100.00% 100.00%
Total Loans $ 6,528,259 $ 6,251,377
Percentage of Total Loans 100.00% 100.00%
Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Total Loans $ 1,043,577 $ 951,302
Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 51,473 $ 45,099
Percentage of Total Allowance 73.80% 64.30%
Total Loans $ 5,058,868 $ 4,900,924
Percentage of Total Loans 77.50% 78.50%
Real Estate | Retail    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 10,207 $ 10,171
Percentage of Total Allowance 14.60% 14.50%
Total Loans $ 1,106,438 $ 1,068,978
Percentage of Total Loans 16.90% 17.10%
Real Estate | Hospitality    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 8,183 $ 15,302
Percentage of Total Allowance 11.70% 21.80%
Total Loans $ 823,033 $ 848,134
Percentage of Total Loans 12.60% 13.60%
Real Estate | Office    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 6,272 $ 3,935
Percentage of Total Allowance 9.00% 5.60%
Total Loans $ 533,031 $ 568,861
Percentage of Total Loans 8.20% 9.10%
Real Estate | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 14,520 $ 8,243
Percentage of Total Allowance 20.80% 11.80%
Total Loans $ 1,482,826 $ 1,385,051
Percentage of Total Loans 22.70% 22.20%
Real Estate | Total commercial property loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 39,182 $ 37,651
Percentage of Total Allowance 56.10% 53.70%
Total Loans $ 3,945,328 $ 3,871,024
Percentage of Total Loans 60.40% 62.00%
Real Estate | Construction    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 1,021 $ 1,664
Percentage of Total Allowance 1.50% 2.40%
Total Loans $ 69,963 $ 78,598
Percentage of Total Loans 1.10% 1.30%
Real Estate | Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 11,270 $ 5,784
Percentage of Total Allowance 16.20% 8.20%
Total Loans $ 1,043,577 $ 951,302
Percentage of Total Loans 16.00% 15.20%
Commercial and Industrial    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 7,302 $ 10,006
Percentage of Total Allowance 10.50% 14.30%
Total Loans $ 1,052,522 $ 863,431
Percentage of Total Loans 16.10% 13.80%
Equipment Financing Agreements    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 11,006 $ 15,042
Percentage of Total Allowance 15.70% 21.40%
Total Loans $ 416,869 $ 487,022
Percentage of Total Loans 6.40% 7.70%