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Goodwill and Core Deposit Intangible - Additional Information (Detail) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Goodwill And Intangible Assets Disclosure [Line Items]    
Goodwill $ 14,381 $ 14,381
Core deposit intangible assets $ 3,185 $ 3,632
Percentage of fair value of reporting unit including goodwill 50.00%  
Percentage of probability of fair value of reporting unit including goodwill 50.00%  
Cornerstone Bank Acquisition [Member]    
Goodwill And Intangible Assets Disclosure [Line Items]    
Goodwill $ 5,500  
Five Branches Acquired [Member]    
Goodwill And Intangible Assets Disclosure [Line Items]    
Goodwill $ 8,900  
Core Deposits [Member]    
Goodwill And Intangible Assets Disclosure [Line Items]    
Intangible assets amortized year 10 years  
Core Deposits [Member] | Noah Bank Acquisition [Member]    
Goodwill And Intangible Assets Disclosure [Line Items]    
Core deposit intangible assets $ 98  
Core Deposits [Member] | Cornerstone Bank Acquisition [Member]    
Goodwill And Intangible Assets Disclosure [Line Items]    
Core deposit intangible assets 2,800  
Core Deposits [Member] | Five Branches Acquired [Member]    
Goodwill And Intangible Assets Disclosure [Line Items]    
Core deposit intangible assets $ 4,200