Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.24.0.1
Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
USD ($)
Branch
Segment
shares
Dec. 31, 2021
USD ($)
Dec. 31, 2022
USD ($)
Jan. 24, 2019
shares
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Number of reportable segments | Segment 1      
Accrued interest receivable on available-for-sale debt securities $ 3,300   $ 2,400  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest   Accrued interest  
Retained earnings $ 319,048   $ 269,542  
Impairment of intangible assets 0      
Goodwill impairment loss 0      
Bank-owned life insurance $ 56,335   $ 55,544  
Stock options, expiration term from date of grant 10 years      
Number of shares authorized for repurchase (percent)       5.00%
Number of shares authorized for repurchase under program (shares) | shares       1,500,000
Shares repurchased (shares) | shares 250,000      
Shares repurchased $ 4,084 $ 6,135    
Minimum        
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Period of continuous service 3 years      
Maximum        
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Period of continuous service 5 years      
Split Dollar Death Benefit Agreement        
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Bank-owned life insurance $ 2,500      
Full Service        
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Number of branches | Branch 35      
Loan Production        
Financing Receivable, Recorded Investment, Past Due [Line Items]        
Number of branches | Branch 8