XML 83 R73.htm IDEA: XBRL DOCUMENT
v3.21.1

Commitments and Contingent Liabilities - Other (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Commitments and Contingent Liabilities |  |  |
Provision for indemnification losses | $ 17,000 | $ 7,000 |
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 |  |  |
Commitments and Contingent Liabilities |  |  |
Allowance for indemnifications | $ 3,370,000 |  | $ 3,360,000

X
- Definition Amount of expense related to estimated loss for indemnifications. + References No definition available. + Details
Name: | cffi_ProvisionForLossOnIndemnification
Namespace Prefix: | cffi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The maximum recourse period for residential mortgage loans sold to third parties. + References No definition available. + Details
Name: | cffi_RecoursePeriodForEarlyPaymentDefaultMaximum
Namespace Prefix: | cffi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum recourse period for early payment default on residential loans sold to third parties. + References No definition available. + Details
Name: | cffi_RecoursePeriodForEarlyPaymentDefaultMinimum
Namespace Prefix: | cffi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cffi_MortgageBankingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_IndemnificationGuaranteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |