Quarterly report pursuant to Section 13 or 15(d)

Loans - Allowance for Credit Losses by Portfolio Segment (Detail)

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Loans - Allowance for Credit Losses by Portfolio Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance     $ 69,462 $ 71,523
Chargeoffs $ (2,338)   (4,461) (4,944)
Recoveries     1,076 1,750
Credit loss expense (recovery)     1,652 2,695
Ending balance 67,729 $ 71,024 67,729 71,024
Non-PCI Loans and Leases        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance 68,270 72,249    
Chargeoffs   (2,707)    
Recoveries 548 967    
Credit loss expense (recovery) 1,249 515    
Ending balance 67,729 71,024 67,729 71,024
Real Estate        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance     45,499  
Ending balance 42,153   42,153  
Real Estate | Non-PCI Loans and Leases        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance 42,584 43,531 45,499 44,026
Chargeoffs (93)   (93) (412)
Recoveries 64 62 111 130
Credit loss expense (recovery) (403) (539) (3,365) (690)
Ending balance 42,152 43,054 42,152 43,054
Commercial and Industrial        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance     10,257  
Ending balance 10,563   10,563  
Commercial and Industrial | Non-PCI Loans and Leases        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance 11,836 15,333 10,257 15,267
Chargeoffs (93) (103) (248) (312)
Recoveries 166 555 224 791
Credit loss expense (recovery) (1,346) 244 330 283
Ending balance 10,563 16,029 10,563 16,029
Equipment Financing Agreements        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance     13,706  
Ending balance 15,013   15,013  
Equipment Financing Agreements | Non-PCI Loans and Leases        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance 13,850 13,385 13,706 12,230
Chargeoffs (2,152) (2,604) (4,120) (4,220)
Recoveries 318 350 741 829
Credit loss expense (recovery) 2,998 810 4,687 3,102
Ending balance $ 15,014 $ 11,941 $ 15,014 $ 11,941