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
Sep. 30, 2020
Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 86,620 $ 61,408
Percentage of Allowance 100.00% 100.00%
Total Loans $ 4,834,137 $ 4,610,147
Percentage of Total Loans 100.00% 100.00%
Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 50,274 $ 36,355
Percentage of Allowance 58.10% 59.20%
Total Loans $ 3,623,635 $ 3,628,505
Percentage of Total Loans 75.00% 78.70%
Real Estate | Retail    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 5,838 $ 4,911
Percentage of Allowance 6.80% 8.00%
Total Loans $ 805,055 $ 869,302
Percentage of Total Loans 16.70% 18.90%
Real Estate | Hospitality    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 20,258 $ 6,686
Percentage of Allowance 23.40% 10.90%
Total Loans $ 877,354 $ 922,288
Percentage of Total Loans 18.10% 20.00%
Real Estate | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 16,876 $ 8,060
Percentage of Allowance 19.50% 13.10%
Total Loans $ 1,526,411 $ 1,358,432
Percentage of Total Loans 31.60% 29.40%
Real Estate | Total commercial property loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 42,972 $ 19,657
Percentage of Allowance 49.70% 32.00%
Total Loans $ 3,208,820 $ 3,150,022
Percentage of Total Loans 66.40% 68.30%
Real Estate | Construction    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 4,859 $ 15,003
Percentage of Allowance 5.60% 24.40%
Total Loans $ 55,627 $ 76,455
Percentage of Total Loans 1.20% 1.70%
Real Estate | Residential property    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 2,443 $ 1,695
Percentage of Allowance 2.80% 2.80%
Total Loans $ 359,188 $ 402,028
Percentage of Total Loans 7.40% 8.70%
Commercial and Industrial    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 20,849 $ 16,206
Percentage of Allowance 24.10% 26.40%
Total Loans $ 765,484 $ 484,093
Percentage of Total Loans 15.80% 10.50%
Leases Receivable    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 15,287 $ 8,767
Percentage of Allowance 17.60% 14.30%
Total Loans $ 433,323 $ 483,879
Percentage of Total Loans 9.00% 10.50%
Consumer    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 210 $ 80
Percentage of Allowance 0.20% 0.10%
Total Loans $ 11,695 $ 13,670
Percentage of Total Loans 0.20% 0.30%