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Commitments and Contingent Liabilities - Other (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Commitments and Contingent Liabilities |  |  |
Provision for indemnification losses | $ (583) | $ 17 |
Mortgage Banking |  |  |
Commitments and Contingent Liabilities |  |  |
Recourse period for early payment default, minimum | 90 days |  |
Recourse period for early payment default, maximum | 1 year |  |
Indemnification reserve for recourse provisions | Mortgage Banking |  |  |
Commitments and Contingent Liabilities |  |  |
Provision for indemnification losses | $ 583 | 17 |
Indemnification payments paid | 0 | $ 0 |
Allowance for indemnifications | $ 2,670 |  | $ 3,250

X
- Definition The amount of cash outflow for indemnification. + References No definition available. + Details
Name: | cffi_IndemnificationPayments
Namespace Prefix: | cffi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense related to estimated loss for indemnifications. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition The maximum recourse period for residential mortgage loans sold to third parties. + References No definition available. + Details
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Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The minimum recourse period for early payment default on residential loans sold to third parties. + References No definition available. + Details
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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 No definition available. + Details
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- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Balance Type: |
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