v3.26.1
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, 2026
Dec. 31, 2025
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 70,475 $ 69,903
Percentage of Total Allowance 100.00% 100.00%
Total Loans $ 6,535,312 $ 6,563,368
Percentage of Total Loans 100.00% 100.00%
Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Total Loans $ 978,881 $ 1,049,872
Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 49,126 $ 51,670
Percentage of Total Allowance 69.70% 73.90%
Total Loans $ 5,001,201 $ 5,079,977
Percentage of Total Loans 76.50% 77.50%
Real Estate | Retail    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 11,022 $ 9,999
Percentage of Total Allowance 15.60% 14.30%
Total Loans $ 1,193,177 $ 1,132,439
Percentage of Total Loans 18.30% 17.30%
Real Estate | Hospitality    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 7,475 $ 8,737
Percentage of Total Allowance 10.60% 12.50%
Total Loans $ 858,617 $ 847,989
Percentage of Total Loans 13.10% 12.90%
Real Estate | Office    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 4,968 $ 5,700
Percentage of Total Allowance 7.10% 8.20%
Total Loans $ 479,110 $ 503,268
Percentage of Total Loans 7.30% 7.70%
Real Estate | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 13,828 $ 14,078
Percentage of Total Allowance 19.60% 20.10%
Total Loans $ 1,477,659 $ 1,532,667
Percentage of Total Loans 22.60% 23.40%
Real Estate | Total commercial property loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 37,293 $ 38,514
Percentage of Total Allowance 52.90% 55.10%
Total Loans $ 4,008,563 $ 4,016,363
Percentage of Total Loans 61.30% 61.30%
Real Estate | Construction    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 174 $ 208
Percentage of Total Allowance 0.30% 0.30%
Total Loans $ 13,757 $ 13,742
Percentage of Total Loans 0.20% 0.20%
Real Estate | Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 11,659 $ 12,948
Percentage of Total Allowance 16.50% 18.50%
Total Loans $ 978,881 $ 1,049,872
Percentage of Total Loans 15.00% 16.00%
Commercial and Industrial    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 8,681 $ 7,792
Percentage of Total Allowance 12.30% 11.10%
Total Loans $ 1,171,272 $ 1,074,908
Percentage of Total Loans 17.90% 16.40%
Equipment Financing Agreements    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 12,668 $ 10,441
Percentage of Total Allowance 18.00% 15.00%
Total Loans $ 362,839 $ 408,483
Percentage of Total Loans 5.60% 6.10%