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
Mar. 31, 2023
Dec. 31, 2022
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 72,249 $ 71,523
Percentage of Total Allowance 100.00% 100.00%
Total Loans $ 5,980,458 $ 5,967,133
Percentage of Total Loans 100.00% 100.00%
Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Total Loans $ 817,917 $ 734,472
Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 43,531 $ 44,026
Percentage of Total Allowance 60.30% 61.60%
Total Loans $ 4,602,093 $ 4,567,853
Percentage of Total Loans 77.00% 76.60%
Real Estate | Retail    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 9,405 $ 7,872
Percentage of Total Allowance 13.00% 11.00%
Total Loans $ 1,052,353 $ 1,023,608
Percentage of Total Loans 17.60% 17.20%
Real Estate | Hospitality    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 14,138 $ 13,407
Percentage of Total Allowance 19.60% 18.70%
Total Loans $ 669,012 $ 646,893
Percentage of Total Loans 11.20% 10.80%
Real Estate | Office    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 2,509 $ 2,293
Percentage of Total Allowance 3.50% 3.20%
Total Loans $ 533,703 $ 499,946
Percentage of Total Loans 8.90% 8.40%
Real Estate | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 9,186 $ 13,056
Percentage of Total Allowance 12.70% 18.30%
Total Loans $ 1,415,748 $ 1,553,729
Percentage of Total Loans 23.70% 26.00%
Real Estate | Total commercial property loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 35,238 $ 36,628
Percentage of Total Allowance 48.80% 51.20%
Total Loans $ 3,670,816 $ 3,724,176
Percentage of Total Loans 61.40% 62.40%
Real Estate | Construction    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 4,003 $ 4,022
Percentage of Total Allowance 5.50% 5.70%
Total Loans $ 113,360 $ 109,205
Percentage of Total Loans 1.90% 1.80%
Real Estate | Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 4,290 $ 3,376
Percentage of Total Allowance 6.00% 4.70%
Total Loans $ 817,917 $ 734,472
Percentage of Total Loans 13.70% 12.40%
Commercial and Industrial    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 15,333 $ 15,267
Percentage of Total Allowance 21.20% 21.30%
Total Loans $ 778,149 $ 804,492
Percentage of Total Loans 13.00% 13.40%
Equipment Financing Agreements    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 13,385 $ 12,230
Percentage of Total Allowance 18.50% 17.10%
Total Loans $ 600,216 $ 594,788
Percentage of Total Loans 10.00% 10.00%