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Borrowings - Statutory Trusts (Details) - Trust Preferred Securities Subject to Mandatory Redemption - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2007
Long-term borrowings    
Securities issued   $ 25,000,000
Investment, Variable Interest Rate, Type [Extensible Enumeration] cffi:ThreeMonthSecuredOvernightFinancingRateMember  
Minimum    
Long-term borrowings    
Variable rate, basis spread (as a percent) 1.57%  
Maximum    
Long-term borrowings    
Variable rate, basis spread (as a percent) 3.15%  
Common Stock    
Long-term borrowings    
Securities issued $ 775,000  
Private Placement    
Long-term borrowings    
Securities issued 25,000,000  
CVBK Trust I    
Long-term borrowings    
Securities issued $ 5,000,000  
Interest rate (as a percent) 4.64%  
Principal asset of Trust, notes receivable from reporting entity $ 5,160,000  
C&F Financial Statutory Trust I    
Long-term borrowings    
Securities issued $ 10,000,000  
Interest rate (as a percent) 5.80%  
Principal asset of Trust, notes receivable from reporting entity $ 10,310,000  
CF Financial Statutory Trust II    
Long-term borrowings    
Securities issued $ 10,000,000  
Interest rate (as a percent) 5.10%  
Principal asset of Trust, notes receivable from reporting entity $ 10,310,000