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, 2020
Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 86,330 $ 61,408
Allowance Amount, Percentage 100.00% 100.00%
Total Loans $ 4,825,642 $ 4,610,147
Total Loans, Percentage 100.00% 100.00%
Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 56,216 $ 36,355
Allowance Amount, Percentage 65.20% 59.20%
Total Loans $ 3,620,306 $ 3,628,505
Total Loans, Percentage 75.00% 78.70%
Real Estate | Retail    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 7,341 $ 4,911
Allowance Amount, Percentage 8.50% 8.00%
Total Loans $ 808,157 $ 869,302
Total Loans, Percentage 16.70% 18.90%
Real Estate | Hospitality    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 11,984 $ 6,686
Allowance Amount, Percentage 13.90% 10.90%
Total Loans $ 882,812 $ 922,288
Total Loans, Percentage 18.30% 20.00%
Real Estate | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 24,920 $ 8,060
Allowance Amount, Percentage 28.90% 13.10%
Total Loans $ 1,504,916 $ 1,358,432
Total Loans, Percentage 31.20% 29.40%
Real Estate | Total commercial property loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 44,245 $ 19,657
Allowance Amount, Percentage 51.30% 32.00%
Total Loans $ 3,195,885 $ 3,150,022
Total Loans, Percentage 66.20% 68.30%
Real Estate | Construction    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 9,331 $ 15,003
Allowance Amount, Percentage 10.80% 24.40%
Total Loans $ 70,357 $ 76,455
Total Loans, Percentage 1.50% 1.70%
Real Estate | Residential property    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 2,640 $ 1,695
Allowance Amount, Percentage 3.10% 2.80%
Total Loans $ 354,064 $ 402,028
Total Loans, Percentage 7.30% 8.70%
Commercial and Industrial    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 13,387 $ 16,206
Allowance Amount, Percentage 15.50% 26.40%
Total Loans $ 730,399 $ 484,093
Total Loans, Percentage 15.10% 10.50%
Leases Receivable    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 16,525 $ 8,767
Allowance Amount, Percentage 19.10% 14.30%
Total Loans $ 462,811 $ 483,879
Total Loans, Percentage 9.60% 10.50%
Consumer    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 202 $ 80
Allowance Amount, Percentage 0.20% 0.10%
Total Loans $ 12,126 $ 13,670
Total Loans, Percentage 0.30% 0.30%