XML 56 R47.htm IDEA: XBRL DOCUMENT v3.23.3

Loans - Loan Modifications (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted average interest rate of modified financing receivables	0.75%	0.75%
Weighted average extension term of modified financing receivables	2 years 6 months		2 years 7 months 6 days
Payment defaults of modified loans were modified during the previous twelve months	0	0
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted average interest rate of modified financing receivables	0.75%	0.75%
Weighted average extension term of modified financing receivables	2 years		2 years 1 month 6 days
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted average extension term of modified financing receivables	10 years		10 years

X

- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

No definition available.

+ Details

Name:	cffi_FinancingReceivableTroubledDebtRestructuringSubsequentDefaultNumberOfContracts2
Namespace Prefix:	cffi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average extension term of modified financing receivables.

+ References

No definition available.

+ Details

Name:	cffi_FinancingReceivablesModifiedLoansWeightedAverageExtensionTerm
Namespace Prefix:	cffi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average interest rate of modified financing receivables.

+ References

No definition available.

+ Details

Name:	cffi_FinancingReceivablesModifiedLoansWeightedAverageInterestRate
Namespace Prefix:	cffi_
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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: