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Summary of Significant Accounting Policies - Nature of Operations and Significant Group Concentration of Credit Risk (Details)	12 Months Ended
	Dec. 31, 2022 subsidiary
Category of loan concentration risk | Loan Portfolio Concentration Risk [Member] | Commercial, Financial & Agricultural
Concentration risk
Concentration risk, percentage	47.90%
Category of loan concentration risk | Loan Portfolio Concentration Risk [Member] | Non-prime consumer finance loans
Concentration risk
Concentration risk, percentage	25.10%
C&F Bank
Concentration risk
Number of wholly owned subsidiaries	5
C&F Mortgage | C&F Select LLC
Concentration risk
Interest owned (as a percent)	51.00%

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