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
Mar. 31, 2024
Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]    
Beginning balance $ 69,462  
Ending balance 68,270  
Non-PCI Loans and Leases    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Beginning balance 69,462 $ 71,523
Chargeoffs (2,123) (2,238)
Recoveries 527 783
Credit loss expense (recovery) 404 2,181
Ending balance 68,270 72,249
Real Estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Beginning balance 45,499  
Ending balance 42,584  
Real Estate | Non-PCI Loans and Leases    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Beginning balance 45,499 44,026
Chargeoffs   (412)
Recoveries 46 68
Credit loss expense (recovery) (2,961) (151)
Ending balance 42,584 43,531
Commercial and Industrial    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Beginning balance 10,257  
Ending balance 11,836  
Commercial and Industrial | Non-PCI Loans and Leases    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Beginning balance 10,257 15,267
Chargeoffs (155) (210)
Recoveries 58 235
Credit loss expense (recovery) 1,676 41
Ending balance 11,836 15,333
Equipment Financing Agreements    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Beginning balance 13,706  
Ending balance 13,850  
Equipment Financing Agreements | Non-PCI Loans and Leases    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Beginning balance 13,706 12,230
Chargeoffs (1,968) (1,616)
Recoveries 423 480
Credit loss expense (recovery) 1,689 2,291
Ending balance $ 13,850 $ 13,385