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, 2020
Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 66,500 $ 61,408
Allowance Amount, Percentage 100.00% 100.00%
Total Loans $ 4,543,636 $ 4,610,147
Total Loans, Percentage 100.00% 100.00%
Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 38,983 $ 36,355
Allowance Amount, Percentage 58.70% 59.20%
Total Loans $ 3,566,305 $ 3,628,505
Total Loans, Percentage 78.50% 78.70%
Real Estate | Retail    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 6,651 $ 4,911
Allowance Amount, Percentage 10.00% 8.00%
Total Loans $ 818,045 $ 869,302
Total Loans, Percentage 18.00% 18.90%
Real Estate | Hospitality    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 12,499 $ 6,686
Allowance Amount, Percentage 18.80% 10.90%
Total Loans $ 884,511 $ 922,288
Total Loans, Percentage 19.50% 20.00%
Real Estate | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 15,664 $ 8,060
Allowance Amount, Percentage 23.60% 13.10%
Total Loans $ 1,420,824 $ 1,358,432
Total Loans, Percentage 31.30% 29.40%
Real Estate | Total commercial property loans    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 34,814 $ 19,657
Allowance Amount, Percentage 52.40% 32.00%
Total Loans $ 3,123,380 $ 3,150,022
Total Loans, Percentage 68.70% 68.30%
Real Estate | Construction    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 2,207 $ 15,003
Allowance Amount, Percentage 3.30% 24.40%
Total Loans $ 63,809 $ 76,455
Total Loans, Percentage 1.40% 1.70%
Real Estate | Residential property    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 1,962 $ 1,695
Allowance Amount, Percentage 3.00% 2.80%
Total Loans $ 379,116 $ 402,028
Total Loans, Percentage 8.30% 8.70%
Commercial and Industrial    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 11,588 $ 16,206
Allowance Amount, Percentage 17.40% 26.40%
Total Loans $ 472,714 $ 484,093
Total Loans, Percentage 10.40% 10.50%
Leases Receivable    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 15,780 $ 8,767
Allowance Amount, Percentage 23.70% 14.30%
Total Loans $ 492,527 $ 483,879
Total Loans, Percentage 10.80% 10.50%
Consumer    
Financing Receivable Allowance For Credit Losses [Line Items]    
Allowance Amount $ 149 $ 80
Allowance Amount, Percentage 0.20% 0.10%
Total Loans $ 12,090 $ 13,670
Total Loans, Percentage 0.30% 0.30%