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Loans and ACL - Summary of Change in the ACL by Major Loan Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Financing Receivable Impaired [Line Items]    
Balance, beginning of period $ 30,740 [1] $ 12,121
Charge-offs (1,309) (2,819)
Recoveries   211
Net charge-offs (1,087) (2,608)
Provision (benefit) for credit losses - loans (1,110) 2,500
Balance, end of period 35,961 12,013
Commercial and Industrial [Member]    
Financing Receivable Impaired [Line Items]    
Balance, beginning of period 27,070  
Charge-offs (799) (2,401)
Recoveries   74
Net charge-offs (681)  
Provision (benefit) for credit losses - loans (2,049)  
Balance, end of period 27,266  
Real estate construction [Member]    
Financing Receivable Impaired [Line Items]    
Charge-offs   (123)
Recoveries   12
Real Estate Mortgage [Member]    
Financing Receivable Impaired [Line Items]    
Charge-offs   (16)
Recoveries   4
Consumer [Member]    
Financing Receivable Impaired [Line Items]    
Balance, beginning of period 3,670  
Charge-offs (497) (279)
Recoveries   $ 121
Net charge-offs (406)  
Provision (benefit) for credit losses - loans 939  
Balance, end of period 8,695  
Impact of ASC 326 Adoption [Member]    
Financing Receivable Impaired [Line Items]    
Balance, beginning of period 7,418  
Impact of ASC 326 adoption 7,418  
Charge-offs (1,309)  
Recoveries 222  
Impact of ASC 326 Adoption [Member] | Commercial and Industrial [Member]    
Financing Receivable Impaired [Line Items]    
Impact of ASC 326 adoption 2,926  
Charge-offs (799)  
Recoveries 118  
Impact of ASC 326 Adoption [Member] | Consumer [Member]    
Financing Receivable Impaired [Line Items]    
Impact of ASC 326 adoption 4,492  
Charge-offs (510)  
Recoveries $ 104  
[1] Derived from audited December 31, 2022 Consolidated Financial Statements, as restated in Amended Form 10-K/A.