Annual report [Section 13 and 15(d), not S-K Item 405]

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

v3.25.4
Loans - Allowance for Credit Losses by Portfolio Segment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable Allowance For Credit Losses [Line Items]      
Beginning balance $ 70,147    
Ending balance 69,903 $ 70,147  
Non-PCI Loans and Leases      
Financing Receivable Allowance For Credit Losses [Line Items]      
Beginning balance 70,147 69,462 $ 71,523
Charge-offs (21,046) (11,618) (16,090)
Recoveries 6,639 7,485 9,047
Provision (recovery) for credit losses   4,818 4,982
Ending balance 69,903 70,147 69,462
Real Estate      
Financing Receivable Allowance For Credit Losses [Line Items]      
Beginning balance 45,099    
Ending balance 51,670 45,099  
Real Estate | Non-PCI Loans and Leases      
Financing Receivable Allowance For Credit Losses [Line Items]      
Beginning balance 45,099 45,499 44,026
Charge-offs (9,212) (1,543) (627)
Recoveries 701 2,223 312
Provision (recovery) for credit losses   (1,080) 1,788
Ending balance 51,670 45,099 45,499
Commercial and Industrial      
Financing Receivable Allowance For Credit Losses [Line Items]      
Beginning balance 10,006    
Ending balance 7,792 10,006  
Commercial and Industrial | Non-PCI Loans and Leases      
Financing Receivable Allowance For Credit Losses [Line Items]      
Beginning balance 10,006 10,257 15,267
Charge-offs (1,708) (576) (6,657)
Recoveries 3,114 3,482 7,089
Provision (recovery) for credit losses   (3,157) (5,442)
Ending balance 7,792 10,006 10,257
Equipment Financing Agreements      
Financing Receivable Allowance For Credit Losses [Line Items]      
Beginning balance 15,042    
Ending balance 10,441 15,042  
Equipment Financing Agreements | Non-PCI Loans and Leases      
Financing Receivable Allowance For Credit Losses [Line Items]      
Beginning balance 15,042 13,706 12,230
Charge-offs (10,126) (9,499) (8,806)
Recoveries 2,824 1,780 1,646
Provision (recovery) for credit losses   9,055 8,636
Ending balance $ 10,441 $ 15,042 $ 13,706