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Summary of Significant Accounting Policies - Narrative (Details)
 12 Months Ended
Jan. 01, 2023
USD ($)
Dec. 31, 2024
USD ($)
segment
valuationMethod
investment
$ / shares
Dec. 31, 2023
USD ($)
$ / shares
Summary of Significant Accounting Policies [Line Items]      
Number of equity method investments | investment   3  
Restricted cash   $ 0 $ 0
Period past due for loans to be considered as delinquent   90 days  
Total valuation methods used on impaired loans | valuationMethod   2  
Total loans serviced for others   $ 1,400,000 1,800,000
Deferred income tax valuation allowance   0  
Liability for uncertain tax positions   0  
Unrecognized tax benefits   $ 0  
Number of reportable segments | segment   3  
Retained earnings   $ 172,181,000 160,862,000
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13      
Summary of Significant Accounting Policies [Line Items]      
Increase in allowance for credit losses $ 10,000,000    
Increase related to PCD financial assets 1,200,000    
Tax effect 2,100,000    
Retained earnings 6,600,000    
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Loans      
Summary of Significant Accounting Policies [Line Items]      
Increase in allowance for credit losses 8,900,000    
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Unfunded Loan Commitment      
Summary of Significant Accounting Policies [Line Items]      
Increase in allowance for credit losses $ 1,100,000    
Software      
Summary of Significant Accounting Policies [Line Items]      
Estimated useful lives   3 years  
Minimum | Building      
Summary of Significant Accounting Policies [Line Items]      
Estimated useful lives   7 years  
Minimum | Furniture, fixtures and equipment      
Summary of Significant Accounting Policies [Line Items]      
Estimated useful lives   3 years  
Maximum | Building      
Summary of Significant Accounting Policies [Line Items]      
Estimated useful lives   40 years  
Maximum | Furniture, fixtures and equipment      
Summary of Significant Accounting Policies [Line Items]      
Estimated useful lives   10 years  
Subsidiary bank      
Summary of Significant Accounting Policies [Line Items]      
FHLB stock   $ 2,000,000.0 $ 2,100,000
FHLB stock par value (in dollars per share) | $ / shares   $ 100 $ 100
Trabian      
Summary of Significant Accounting Policies [Line Items]      
Ownership interest   80.80%