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Employee Benefit Plans - Defined Contribution Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined contribution plans
Minimum age	18 years
Amounts charged to expense	$ 1,470,000	$ 1,550,000	$ 1,440,000
Postretirement benefit plan | Chief Executive Officer
Defined contribution plans
Amounts charged to expense	0	10,000
Nonqualified Executive Plan | Profit-Sharing Plan
Defined contribution plans
Amounts charged to expense	$ 378,000	$ 325,000	$ 345,000
Cash Balance Plan | C&F Bank
Defined contribution plans
Minimum age	21 years
Basis points added to 30-year Treasuries yield to compute interest credit (as a percent)	1.50%
Threshold monthly interest credits based on the yield under the benefit plan	3.00%

X

- Definition

Percentage points added to the reference rate to compute the interest credited to each participant account in the defined benefit plan.

+ References

No definition available.

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- Definition

The minimum age for eligibility to participate in the defined benefit plan.

+ References

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- Definition

Threshold monthly interest credits based on the yield under the benefit plan.

+ References

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- Definition

The minimum age for eligibility to participate in the defined contribution plan.

+ References

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

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