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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Jan. 01, 2020
Schedule Of Summary Of Significant Accounting Policies [Line Items]        
Reserve requirements $ 0 $ 0    
Securities held for trading purposes 0 0    
Mortgage loans held for sale 361,000 $ 98,000    
Threshold for significant investments $ 500,000      
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Accrued interest receivable and other assets Accrued interest receivable and other assets    
Right-of-use asset $ 11,039,000 $ 9,021,000    
Operating Lease, Liability, Statement of Financial Position [Extensible List] Accrued interest payable and other liabilities Accrued interest payable and other liabilities    
Present value of net future minimum lease payments $ 11,420,000 $ 9,322,000    
Period for appraises of property (in months) 12 months 12 months    
Foreclosed assets and ORE $ 1,575,000 $ 461,000    
Other investments 25,880,000 22,026,000    
Income tax interest or penalties 0 0 $ 0  
Accrued liability for interest or penalty payments 0 0 0  
Tax effect for unrealized gains (losses) on investment securities $ 2,105,000 $ (10,646,000) $ (1,204,000)  
Minimum        
Schedule Of Summary Of Significant Accounting Policies [Line Items]        
Estimated useful lives of the individual assets (in years) 3 years      
Minimum | Core Deposits        
Schedule Of Summary Of Significant Accounting Policies [Line Items]        
Amortization of intangibles (in years) 9 years      
Maximum        
Schedule Of Summary Of Significant Accounting Policies [Line Items]        
Estimated useful lives of the individual assets (in years) 40 years      
Maximum | Core Deposits        
Schedule Of Summary Of Significant Accounting Policies [Line Items]        
Amortization of intangibles (in years) 15 years      
Cumulative effect of change in accounting principle due to the adoption of ASC 326, net of tax | ASU 2016-13        
Schedule Of Summary Of Significant Accounting Policies [Line Items]        
Purchase discounts reclassified       $ 996,000