Quarterly report pursuant to Section 13 or 15(d)

Loans - Schedule of Amortized Cost Basis of Loans on Nonaccrual Status and Loans Past Due 90 Days and Still Accruing (Detail)

v3.20.2
Loans - Schedule of Amortized Cost Basis of Loans on Nonaccrual Status and Loans Past Due 90 Days and Still Accruing (Detail) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses $ 40,909  
Nonaccrual Loans With Allowance for Credit Losses 23,424  
Total Nonperforming Loans 64,333 $ 63,761
Retail    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 5,504  
Total Nonperforming Loans 5,504  
Other    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 2,184  
Nonaccrual Loans With Allowance for Credit Losses 774  
Total Nonperforming Loans 2,958  
Real Estate    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 38,894  
Nonaccrual Loans With Allowance for Credit Losses 774  
Total Nonperforming Loans 39,668  
Real Estate | Total commercial property loans    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 7,687  
Nonaccrual Loans With Allowance for Credit Losses 774  
Total Nonperforming Loans 8,461  
Real Estate | Construction    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 29,444  
Total Nonperforming Loans 29,444  
Real Estate | Residential property    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 1,763  
Total Nonperforming Loans 1,763  
Commercial and Industrial    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 308  
Nonaccrual Loans With Allowance for Credit Losses 12,908  
Total Nonperforming Loans 13,215  
Leases Receivable    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 1,035  
Nonaccrual Loans With Allowance for Credit Losses 9,743  
Total Nonperforming Loans 10,778  
Consumer    
Financing Receivable Nonaccrual Status [Line Items]    
Nonaccrual Loans With No Allowance for Credit Losses 672  
Total Nonperforming Loans $ 672