XML 76 R65.htm IDEA: XBRL DOCUMENT v3.22.2

Business Segments - Merger Related Expenses and Segment Debt (Details)	6 Months Ended
	Jun. 30, 2022 item
Mortgage Banking
Business Segments
Number of intersegment lines of credit	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)	2.30%
Consumer Finance. | Maximum
Business Segments
Fixed rate (as a percent)	5.10%
Consumer Finance. | London Interbank Offered Rate (LIBOR) | Minimum
Business Segments
Variable rate, spread (as a percent)	211.50%

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:	dtr-types: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:	dtr-types: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

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: 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:	dtr-types: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: