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Summary of Significant Accounting Policies - Nature of Operations and Derivative Financial Instruments (Details) | Sep. 30, 2024 subsidiary
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Nature of Operations |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other assets.
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other liabilities
C&F Bank |
Nature of Operations |
Number of wholly owned subsidiaries | 5
C&F Mortgage | C&F Select LLC |
Nature of Operations |
Interest owned (as a percent) | 51.00%

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