v3.26.1
Loans - Balance of loans on nonaccrual status (Details) - USD ($)
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Interest income on loans on nonaccrual status $ 13,000  
Reversal of interest income upon placing commercial loans on nonaccrual status 0  
Loans on nonaccrual status 2,012,000 $ 2,157,000
Commercial business    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans on nonaccrual status 2,000  
Residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans on nonaccrual status 1,097,000 1,135,000
Consumer finance | Automobiles    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans on nonaccrual status 890,000 $ 1,022,000
Consumer finance | Marine and recreational vehicles    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans on nonaccrual status $ 23,000