Quarterly report [Sections 13 or 15(d)]

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

v3.26.3
Loans - Allowance for Credit Losses by Portfolio Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance     $ 69,903  
Ending balance $ 70,810   70,810  
Non-PCI Loans and Leases        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance 70,475 $ 66,756 69,903 $ 70,147
Charge-offs (5,024) (2,625) (10,088) (18,192)
Recoveries 680 3,107 1,882 5,363
Credit loss expense (recovery) 4,679 2,543 9,113 12,463
Ending balance 70,810 69,781 70,810 69,781
Real Estate        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance     51,670  
Ending balance 51,648   51,648  
Real Estate | Non-PCI Loans and Leases        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance 49,127 48,021 51,670 45,099
Charge-offs (3,412) (119) (3,571) (8,904)
Recoveries 27 52 111 670
Credit loss expense (recovery) 5,906 3,519 3,438 14,608
Ending balance 51,648 51,473 51,648 51,473
Commercial and Industrial        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance     7,792  
Ending balance 8,117   8,117  
Commercial and Industrial | Non-PCI Loans and Leases        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance 8,680 6,935 7,792 10,006
Charge-offs (181) (124) (584) (1,157)
Recoveries 30 2,229 106 2,463
Credit loss expense (recovery) (412) (1,738) 803 (4,010)
Ending balance 8,117 7,302 8,117 7,302
Equipment Financing Agreements        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance     10,441  
Ending balance 11,045   11,045  
Equipment Financing Agreements | Non-PCI Loans and Leases        
Financing Receivable, Allowance for Credit Loss [Line Items]        
Beginning balance 12,668 11,800 10,441 15,042
Charge-offs (1,431) (2,382) (5,933) (8,131)
Recoveries 623 826 1,665 2,230
Credit loss expense (recovery) (815) 762 4,872 1,865
Ending balance $ 11,045 $ 11,006 $ 11,045 $ 11,006