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Loans and Allowance for Credit Losses - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2023
USD ($)
category
Mar. 31, 2023
loan
Mar. 31, 2023
property
Mar. 31, 2023
component
Dec. 31, 2022
USD ($)
Financing Receivable, Impaired [Line Items]          
Foreclosed properties held $ 1,000        
Number of points in internal risk rating system | category 9        
Number of categories in internal risk rating system considered as not criticized | category 6        
Commercial relationship credit review threshold amount $ 1,000        
Commercial relationship credit review threshold amount, independent external review $ 3,000        
Past due period before loans placed in non-accrual status 90 days        
Recent loan payment history before removal from non-accrual status 6 months        
Allowance for loan losses, number of evaluation components | component       2  
Impaired loans, related reserves $ 100       $ 100
Liability for unfunded commitments 1,700       $ 500
Residential real estate          
Financing Receivable, Impaired [Line Items]          
Foreclosed properties held $ 800        
Increase (decrease) in impaired loans (as a percentage) 80.00%        
Number foreclosed properties held   5,000,000 3    
Investment in loans in the process of foreclosure $ 700        
Residential real estate | Other Loan Relationships          
Financing Receivable, Impaired [Line Items]          
Foreclosed properties held $ 200        
Increase (decrease) in impaired loans (as a percentage) 20.00%        
Total commercial          
Financing Receivable, Impaired [Line Items]          
Number foreclosed properties held | loan   2      
The First State Bank          
Financing Receivable, Impaired [Line Items]          
Foreclosed properties held $ 900