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Loans and Allowance for Credit Losses - Summary of Change in the ACL by Major Loan Segment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Financing Receivable Impaired [Line Items]      
Allowance, beginning of period $ 30,740 $ 12,121 $ 13,827
Charge-offs (31,819) (8,451) (2,541)
Recoveries 4,851 1,383 718
Net charge-offs (26,968) (7,068) (1,823)
Provision for loan losses 24,703 25,687 117
Allowance, end of period 35,893 30,740 12,121
Impact of ASC 326 Adoption [Member]      
Financing Receivable Impaired [Line Items]      
Allowance, beginning of period 7,418    
Impact of ASC 326 adoption 7,418    
Charge-offs 31,819    
Allowance, end of period   7,418  
Commercial and Industrial [Member]      
Financing Receivable Impaired [Line Items]      
Allowance, beginning of period 27,070    
Charge-offs (27,839) (4,779) (1,098)
Recoveries 3,984 442 196
Net charge-offs (23,890)    
Provision for loan losses 21,648    
Allowance, end of period 27,754 27,070  
Commercial and Industrial [Member] | Impact of ASC 326 Adoption [Member]      
Financing Receivable Impaired [Line Items]      
Impact of ASC 326 adoption 2,926    
Charge-offs 27,874    
Consumer [Member]      
Financing Receivable Impaired [Line Items]      
Allowance, beginning of period 3,670    
Charge-offs (2,314) (1,686) (1,123)
Recoveries 867 492 424
Net charge-offs (3,078)    
Provision for loan losses 3,055    
Allowance, end of period 8,139 3,670  
Consumer [Member] | Impact of ASC 326 Adoption [Member]      
Financing Receivable Impaired [Line Items]      
Impact of ASC 326 adoption 4,492    
Charge-offs $ 3,945    
Real estate construction [Member]      
Financing Receivable Impaired [Line Items]      
Charge-offs   (162) (195)
Recoveries   40 0
Real Estate, Mortgage [Member]      
Financing Receivable Impaired [Line Items]      
Charge-offs   (1,824) (125)
Recoveries   $ 409 $ 98