XML 81 R71.htm IDEA: XBRL DOCUMENT
v3.21.2

Business Segments - Merger Related Expenses and Segment Debt (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) item | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Business Segments |  |  |  |  |  |
Merger related costs | $ 0 | $ 0 | $ 0 | $ 898,000 | $ 2,100,000 | $ 2,100,000
Merger related costs, after income taxes |  |  |  |  | $ 1,780,000 | $ 1,780,000
Mortgage Banking |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Number of intersegment lines of credit | item |  |  | 2 |  |  |
Mortgage Banking | FHLB Advances | Minimum |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Variable rate, spread (as a percent) |  |  | 0.50% |  |  |
Mortgage Banking | FHLB Advances | Maximum |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Variable rate, spread (as a percent) |  |  | 1.75% |  |  |
Consumer Finance |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Floor variable rate (as a percent) |  |  | 3.50% |  |  |
Consumer Finance | Minimum |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Fixed rate (as a percent) | 2.20% |  | 2.20% |  |  |
Consumer Finance | Maximum |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Fixed rate (as a percent) | 8.00% |  | 8.00% |  |  |
Consumer Finance | London Interbank Offered Rate (LIBOR) | Minimum |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Variable rate, spread (as a percent) |  |  | 2.00% |  |  |
Peoples Bankshares, Incorporated (Peoples) |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Merger related costs |  | $ 0 |  | 1,400,000 |  |
Merger related costs, after income taxes |  |  |  | 1,130,000 |  |
Peoples Bankshares, Incorporated (Peoples) | Community Banking |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Merger related costs |  |  |  | 1,300,000 |  |
Merger related costs, after income taxes |  |  |  | 1,030,000.00 |  |
Peoples Bankshares, Incorporated (Peoples) | Community Banking | Noninterest expense |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Merger related costs |  |  |  | 998,000 |  |
Peoples Bankshares, Incorporated (Peoples) | Community Banking | Other noninterest income |  |  |  |  |  |
Business Segments |  |  |  |  |  |
Merger related costs |  |  |  | $ 298,000 |  |

X
- Definition This element represents acquisition-related costs, after income taxes, incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References No definition available. + Details
Name: | cffi_BusinessCombinationAcquisitionRelatedCostsAfterIncomeTaxes
Namespace Prefix: | cffi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on borrowing from another operating segment of the reporting entity. + References No definition available. + Details
Name: | cffi_IntersegmentInterestDebtInstrumentBasisSpreadOnVariableRate
Namespace Prefix: | cffi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Floor variable rate of borrowing from another operating segment of the reporting entity. + References No definition available. + Details
Name: | cffi_IntersegmentInterestDebtInstrumentFloorVariableRate
Namespace Prefix: | cffi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of intersegment lines of credit. + References No definition available. + Details
Name: | cffi_NumberOfIntersegmentLinesOfCredit
Namespace Prefix: | cffi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
Name: | us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_VariableRateAxis=cffi_FHLBAdvancesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=cffi_PeoplesBanksharesIncorporatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=cffi_NoninterestExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=cffi_OtherNoninterestIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |