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, 2023
Dec. 31, 2022
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 71,024 $ 71,523
Percentage of Total Allowance 100.00% 100.00%
Total Loans $ 5,965,171 $ 5,967,133
Percentage of Total Loans 100.00% 100.00%
Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Total Loans $ 886,982 $ 734,472
Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 43,054 $ 44,026
Percentage of Total Allowance 60.60% 61.60%
Total Loans $ 4,625,305 $ 4,567,853
Percentage of Total Loans 77.60% 76.60%
Real Estate | Retail    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 10,021 $ 7,872
Percentage of Total Allowance 14.10% 11.00%
Total Loans $ 1,090,739 $ 1,023,608
Percentage of Total Loans 18.30% 17.20%
Real Estate | Hospitality    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 14,381 $ 13,407
Percentage of Total Allowance 20.20% 18.70%
Total Loans $ 686,168 $ 646,893
Percentage of Total Loans 11.50% 10.80%
Real Estate | Office    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 2,668 $ 2,293
Percentage of Total Allowance 3.80% 3.20%
Total Loans $ 559,611 $ 499,946
Percentage of Total Loans 9.40% 8.40%
Real Estate | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 8,277 $ 13,056
Percentage of Total Allowance 11.70% 18.30%
Total Loans $ 1,312,192 $ 1,553,729
Percentage of Total Loans 22.00% 26.00%
Real Estate | Total commercial property loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 35,347 $ 36,628
Percentage of Total Allowance 49.80% 51.20%
Total Loans $ 3,648,710 $ 3,724,176
Percentage of Total Loans 61.20% 62.40%
Real Estate | Construction    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 3,017 $ 4,022
Percentage of Total Allowance 4.20% 5.70%
Total Loans $ 89,613 $ 109,205
Percentage of Total Loans 1.50% 1.80%
Real Estate | Residential    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 4,690 $ 3,376
Percentage of Total Allowance 6.60% 4.70%
Total Loans $ 886,982 $ 734,472
Percentage of Total Loans 14.90% 12.40%
Commercial and Industrial    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 16,029 $ 15,267
Percentage of Total Allowance 22.60% 21.30%
Total Loans $ 753,460 $ 804,492
Percentage of Total Loans 12.60% 13.40%
Equipment Financing Agreements    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 11,941 $ 12,230
Percentage of Total Allowance 16.80% 17.10%
Total Loans $ 586,406 $ 594,788
Percentage of Total Loans 9.80% 10.00%