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Investment Securities - Narrative (Details)
Dec. 31, 2024
USD ($)
state
company
security
bond
Dec. 31, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
Sep. 30, 2014
USD ($)
Debt Securities, Available-for-sale [Line Items]        
AFS allowance $ 0      
HTM allowance for credit losses 196,000 $ 434,000 $ 0  
Amortized cost $ 369,900,000 $ 385,669,000    
Number of securities temporarily impaired (security) | security 243 226    
Financing receivable term extension 30 days      
Debt securities, held-to-maturity, nonaccrual $ 0      
Amortized cost of securities transferred       $ 89,780,000
Fair value of securities transferred       89,757,000
Net unrealized gains (losses) on securities transferred       $ (15,000)
Unamortized balance of net unrealized losses transferred $ 47,000 $ 56,000    
Number of states | state 6      
Federal home loan bank stock $ 6,166,000 2,348,000    
Federal reserve bank stock 1,037,000 1,037,000    
Impairment losses 0      
Other equity securities        
Debt Securities, Available-for-sale [Line Items]        
Securities pledged as collateral 349,833,000 340,623,000    
US Treasury And Government And Collateralized Mortgage-Backed Securities        
Debt Securities, Available-for-sale [Line Items]        
HTM allowance for credit losses $ 0 0    
Municipal Bonds        
Debt Securities, Available-for-sale [Line Items]        
Number of private activity bonds | bond 2      
Amortized cost $ 18,974,000      
Corporate securities        
Debt Securities, Available-for-sale [Line Items]        
HTM allowance for credit losses 116,000 222,000 $ 0  
Amortized cost $ 27,250,000 34,750,000    
Number of individual companies | company 13      
U.S. Treasury & Agency securities        
Debt Securities, Available-for-sale [Line Items]        
HTM allowance for credit losses $ 0      
Amortized cost $ 38,100,000 $ 40,100,000