3.3.1.900 html 555 610 1 true 138 0 false 8 false false R1.htm 00090 - Disclosure - Document And Entity Information Sheet http://cffc.com/role/DisclosureDocumentAndEntityInformation Document And Entity Information Cover 1 false false R2.htm 00100 - Statement - Consolidated Balance Sheets Sheet http://cffc.com/role/StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 00105 - Statement - Consolidated Balance Sheets (Parentheticals) Sheet http://cffc.com/role/StatementConsolidatedBalanceSheetsParentheticals Consolidated Balance Sheets (Parentheticals) Statements 3 false false R4.htm 00200 - Statement - Consolidated Statements of Income Sheet http://cffc.com/role/StatementConsolidatedStatementsOfIncome Consolidated Statements of Income Statements 4 false false R5.htm 00300 - Statement - Consolidated Statements of Comprehensive Income Sheet http://cffc.com/role/StatementConsolidatedStatementsOfComprehensiveIncome Consolidated Statements of Comprehensive Income Statements 5 false false R6.htm 00400 - Statement - Consolidated Statements of Shareholders??? Equity Sheet http://cffc.com/role/StatementConsolidatedStatementsOfShareholdersEquity Consolidated Statements of Shareholders??? Equity Statements 6 false false R7.htm 00405 - Statement - Consolidated Statements of Shareholders??? Equity (Parentheticals) Sheet http://cffc.com/role/StatementConsolidatedStatementsOfShareholdersEquityParentheticals Consolidated Statements of Shareholders??? Equity (Parentheticals) Statements 7 false false R8.htm 00500 - Statement - Consolidated Statements of Cash Flows Sheet http://cffc.com/role/StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 8 false false R9.htm 00505 - Statement - Consolidated Statements of Cash Flows (Parentheticals) Sheet http://cffc.com/role/StatementConsolidatedStatementsOfCashFlowsParentheticals Consolidated Statements of Cash Flows (Parentheticals) Statements 9 false false R10.htm 10101 - Disclosure - Summary of Significant Accounting Policies Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 10201 - Disclosure - Adoption of New Accounting Standards Sheet http://cffc.com/role/DisclosureAdoptionOfNewAccountingStandards Adoption of New Accounting Standards Notes 11 false false R12.htm 10301 - Disclosure - Securities Sheet http://cffc.com/role/DisclosureSecurities Securities Notes 12 false false R13.htm 10401 - Disclosure - Loans Sheet http://cffc.com/role/DisclosureLoans Loans Notes 13 false false R14.htm 10501 - Disclosure - Allowance for Loan Losses Sheet http://cffc.com/role/DisclosureAllowanceForLoanLosses Allowance for Loan Losses Notes 14 false false R15.htm 10601 - Disclosure - Other Real Estate Owned Sheet http://cffc.com/role/DisclosureOtherRealEstateOwned Other Real Estate Owned Notes 15 false false R16.htm 10701 - Disclosure - Corporate Premises and Equipment Sheet http://cffc.com/role/DisclosureCorporatePremisesAndEquipment Corporate Premises and Equipment Notes 16 false false R17.htm 10801 - Disclosure - Time Deposits Sheet http://cffc.com/role/DisclosureTimeDeposits Time Deposits Notes 17 false false R18.htm 10901 - Disclosure - Borrowings Sheet http://cffc.com/role/DisclosureBorrowings Borrowings Notes 18 false false R19.htm 11001 - Disclosure - Shareholders??? Equity and Earnings Per Common Share Sheet http://cffc.com/role/DisclosureShareholdersEquityAndEarningsPerCommonShare Shareholders??? Equity and Earnings Per Common Share Notes 19 false false R20.htm 11101 - Disclosure - Income Taxes Sheet http://cffc.com/role/DisclosureIncomeTaxes Income Taxes Notes 20 false false R21.htm 11201 - Disclosure - Employee Benefit Plans Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlans Employee Benefit Plans Notes 21 false false R22.htm 11301 - Disclosure - Related Party Transactions Sheet http://cffc.com/role/DisclosureRelatedPartyTransactions Related Party Transactions Notes 22 false false R23.htm 11401 - Disclosure - Share-Based Plans Sheet http://cffc.com/role/DisclosureShareBasedPlans Share-Based Plans Notes 23 false false R24.htm 11501 - Disclosure - Regulatory Requirements and Restrictions Sheet http://cffc.com/role/DisclosureRegulatoryRequirementsAndRestrictions Regulatory Requirements and Restrictions Notes 24 false false R25.htm 11601 - Disclosure - Commitments and Financial Instruments with Off-Balance-Sheet Risk Sheet http://cffc.com/role/DisclosureCommitmentsAndFinancialInstrumentsWithOffBalanceSheetRisk Commitments and Financial Instruments with Off-Balance-Sheet Risk Notes 25 false false R26.htm 11701 - Disclosure - Fair Value of Assets and Liabilities Sheet http://cffc.com/role/DisclosureFairValueOfAssetsAndLiabilities Fair Value of Assets and Liabilities Notes 26 false false R27.htm 11801 - Disclosure - Business Segments Sheet http://cffc.com/role/DisclosureBusinessSegments Business Segments Notes 27 false false R28.htm 11901 - Disclosure - Interest Rate Swaps Sheet http://cffc.com/role/DisclosureInterestRateSwaps Interest Rate Swaps Notes 28 false false R29.htm 12001 - Disclosure - Parent Company Condensed Financial Information Sheet http://cffc.com/role/DisclosureParentCompanyCondensedFinancialInformation Parent Company Condensed Financial Information Notes 29 false false R30.htm 12101 - Disclosure - Other Noninterest Expenses Sheet http://cffc.com/role/DisclosureOtherNoninterestExpenses Other Noninterest Expenses Notes 30 false false R31.htm 12201 - Disclosure - Quarterly Condensed Statements of Income-Unaudited Sheet http://cffc.com/role/DisclosureQuarterlyCondensedStatementsOfIncomeUnaudited Quarterly Condensed Statements of Income-Unaudited Notes 31 false false R32.htm 20102 - Disclosure - Accounting Policies, by Policy (Policies) Sheet http://cffc.com/role/DisclosureAccountingPoliciesByPolicyPolicies Accounting Policies, by Policy (Policies) Policies http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPolicies 32 false false R33.htm 30303 - Disclosure - Securities (Tables) Sheet http://cffc.com/role/DisclosureSecuritiesTables Securities (Tables) Tables http://cffc.com/role/DisclosureSecurities 33 false false R34.htm 30403 - Disclosure - Loans (Tables) Sheet http://cffc.com/role/DisclosureLoansTables Loans (Tables) Tables http://cffc.com/role/DisclosureLoans 34 false false R35.htm 30503 - Disclosure - Allowance for Loan Losses (Tables) Sheet http://cffc.com/role/DisclosureAllowanceForLoanLossesTables Allowance for Loan Losses (Tables) Tables http://cffc.com/role/DisclosureAllowanceForLoanLosses 35 false false R36.htm 30603 - Disclosure - Other Real Estate Owned (Tables) Sheet http://cffc.com/role/DisclosureOtherRealEstateOwnedTables Other Real Estate Owned (Tables) Tables http://cffc.com/role/DisclosureOtherRealEstateOwned 36 false false R37.htm 30703 - Disclosure - Corporate Premises and Equipment (Tables) Sheet http://cffc.com/role/DisclosureCorporatePremisesAndEquipmentTables Corporate Premises and Equipment (Tables) Tables http://cffc.com/role/DisclosureCorporatePremisesAndEquipment 37 false false R38.htm 30803 - Disclosure - Time Deposits (Tables) Sheet http://cffc.com/role/DisclosureTimeDepositsTables Time Deposits (Tables) Tables http://cffc.com/role/DisclosureTimeDeposits 38 false false R39.htm 30903 - Disclosure - Borrowings (Tables) Sheet http://cffc.com/role/DisclosureBorrowingsTables Borrowings (Tables) Tables http://cffc.com/role/DisclosureBorrowings 39 false false R40.htm 31003 - Disclosure - Shareholders' Equity, and Earnings Per Common Share (Tables) Sheet http://cffc.com/role/DisclosureShareholdersEquityAndEarningsPerCommonShareTables Shareholders' Equity, and Earnings Per Common Share (Tables) Tables 40 false false R41.htm 31103 - Disclosure - Income Taxes (Tables) Sheet http://cffc.com/role/DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://cffc.com/role/DisclosureIncomeTaxes 41 false false R42.htm 31203 - Disclosure - Employee Benefit Plans (Tables) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansTables Employee Benefit Plans (Tables) Tables http://cffc.com/role/DisclosureEmployeeBenefitPlans 42 false false R43.htm 31403 - Disclosure - Share-Based Plans (Tables) Sheet http://cffc.com/role/DisclosureShareBasedPlansTables Share-Based Plans (Tables) Tables http://cffc.com/role/DisclosureShareBasedPlans 43 false false R44.htm 31503 - Disclosure - Regulatory Requirements and Restrictions (Tables) Sheet http://cffc.com/role/DisclosureRegulatoryRequirementsAndRestrictionsTables Regulatory Requirements and Restrictions (Tables) Tables http://cffc.com/role/DisclosureRegulatoryRequirementsAndRestrictions 44 false false R45.htm 31603 - Disclosure - Commitments and Financial Instruments with Off-Balance-Sheet Risk (Tables) Sheet http://cffc.com/role/DisclosureCommitmentsAndFinancialInstrumentsWithOffBalanceSheetRiskTables Commitments and Financial Instruments with Off-Balance-Sheet Risk (Tables) Tables http://cffc.com/role/DisclosureCommitmentsAndFinancialInstrumentsWithOffBalanceSheetRisk 45 false false R46.htm 31703 - Disclosure - Fair Value of Assets and Liabilities (Tables) Sheet http://cffc.com/role/DisclosureFairValueOfAssetsAndLiabilitiesTables Fair Value of Assets and Liabilities (Tables) Tables http://cffc.com/role/DisclosureFairValueOfAssetsAndLiabilities 46 false false R47.htm 31803 - Disclosure - Business Segments (Tables) Sheet http://cffc.com/role/DisclosureBusinessSegmentsTables Business Segments (Tables) Tables http://cffc.com/role/DisclosureBusinessSegments 47 false false R48.htm 32003 - Disclosure - Parent Company Condensed Financial Information (Tables) Sheet http://cffc.com/role/DisclosureParentCompanyCondensedFinancialInformationTables Parent Company Condensed Financial Information (Tables) Tables http://cffc.com/role/DisclosureParentCompanyCondensedFinancialInformation 48 false false R49.htm 32103 - Disclosure - Other Noninterest Expenses (Tables) Sheet http://cffc.com/role/DisclosureOtherNoninterestExpensesTables Other Noninterest Expenses (Tables) Tables http://cffc.com/role/DisclosureOtherNoninterestExpenses 49 false false R50.htm 32203 - Disclosure - Quarterly Condensed Statements of Income-Unaudited (Tables) Sheet http://cffc.com/role/DisclosureQuarterlyCondensedStatementsOfIncomeUnauditedTables Quarterly Condensed Statements of Income-Unaudited (Tables) Tables http://cffc.com/role/DisclosureQuarterlyCondensedStatementsOfIncomeUnaudited 50 false false R51.htm 40101 - Disclosure - Summary of Significant Accounting Policies - Nature of Operations and Significant Group Concentration of Credit Risk (Details) Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesNatureOfOperationsAndSignificantGroupConcentrationOfCreditRiskDetails Summary of Significant Accounting Policies - Nature of Operations and Significant Group Concentration of Credit Risk (Details) Details 51 false false R52.htm 40102 - Disclosure - Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) Details 52 false false R53.htm 40103 - Disclosure - Summary of Significant Accounting Policies - Originated Loans and Allowance for Loan Losses (Details) Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesOriginatedLoansAndAllowanceForLoanLossesDetails Summary of Significant Accounting Policies - Originated Loans and Allowance for Loan Losses (Details) Details 53 false false R54.htm 40104 - Disclosure - Summary of Significant Accounting Policies - Corporate Premises and Equipment (Details) Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesCorporatePremisesAndEquipmentDetails Summary of Significant Accounting Policies - Corporate Premises and Equipment (Details) Details 54 false false R55.htm 40105 - Disclosure - Summary of Significant Accounting Policies - Goodwill and Core Deposit Intangible (Details) Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesGoodwillAndCoreDepositIntangibleDetails Summary of Significant Accounting Policies - Goodwill and Core Deposit Intangible (Details) Details 55 false false R56.htm 40106 - Disclosure - Summary of Significant Accounting Policies - Taxes and Retirement Plan (Details) Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTaxesAndRetirementPlanDetails Summary of Significant Accounting Policies - Taxes and Retirement Plan (Details) Details 56 false false R57.htm 40107 - Disclosure - Summary of Significant Accounting Policies - Share-Based Compensation (Details) Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesShareBasedCompensationDetails Summary of Significant Accounting Policies - Share-Based Compensation (Details) Details 57 false false R58.htm 40108 - Disclosure - Summary of Significant Accounting Policies - Derivatives (Details) Sheet http://cffc.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDerivativesDetails Summary of Significant Accounting Policies - Derivatives (Details) Details 58 false false R59.htm 40201 - Disclosure - Adoption of New Accounting Standards (Details) Sheet http://cffc.com/role/DisclosureAdoptionOfNewAccountingStandardsDetails Adoption of New Accounting Standards (Details) Details http://cffc.com/role/DisclosureAdoptionOfNewAccountingStandards 59 false false R60.htm 40301 - Disclosure - Securities - Available for sale Securities (Details) Sheet http://cffc.com/role/DisclosureSecuritiesAvailableForSaleSecuritiesDetails Securities - Available for sale Securities (Details) Details 60 false false R61.htm 40302 - Disclosure - Securities - Contractual Maturities (Details) Sheet http://cffc.com/role/DisclosureSecuritiesContractualMaturitiesDetails Securities - Contractual Maturities (Details) Details 61 false false R62.htm 40303 - Disclosure - Securities - Pledged as Collateral (Details) Sheet http://cffc.com/role/DisclosureSecuritiesPledgedAsCollateralDetails Securities - Pledged as Collateral (Details) Details 62 false false R63.htm 40304 - Disclosure - Securities - Unrealized Loss Positions (Details) Sheet http://cffc.com/role/DisclosureSecuritiesUnrealizedLossPositionsDetails Securities - Unrealized Loss Positions (Details) Details 63 false false R64.htm 40305 - Disclosure - Securities - Restricted Stocks (Details) Sheet http://cffc.com/role/DisclosureSecuritiesRestrictedStocksDetails Securities - Restricted Stocks (Details) Details 64 false false R65.htm 40401 - Disclosure - Loans - Major Classifications of Loans (Details) Sheet http://cffc.com/role/DisclosureLoansMajorClassificationsOfLoansDetails Loans - Major Classifications of Loans (Details) Details 65 false false R66.htm 40402 - Disclosure - Loans - Loans Acquired (Details) Sheet http://cffc.com/role/DisclosureLoansLoansAcquiredDetails Loans - Loans Acquired (Details) Details 66 false false R67.htm 40403 - Disclosure - Loans - Change in Accretable Yield (Details) Sheet http://cffc.com/role/DisclosureLoansChangeInAccretableYieldDetails Loans - Change in Accretable Yield (Details) Details 67 false false R68.htm 40404 - Disclosure - Loans - Loans on Nonaccrual Status (Details) Sheet http://cffc.com/role/DisclosureLoansLoansOnNonaccrualStatusDetails Loans - Loans on Nonaccrual Status (Details) Details 68 false false R69.htm 40405 - Disclosure - Loans - Past Due Status (Details) Sheet http://cffc.com/role/DisclosureLoansPastDueStatusDetails Loans - Past Due Status (Details) Details 69 false false R70.htm 40406 - Disclosure - Loans - Troubled Debt Restructurings (Details) Sheet http://cffc.com/role/DisclosureLoansTroubledDebtRestructuringsDetails Loans - Troubled Debt Restructurings (Details) Details 70 false false R71.htm 40407 - Disclosure - Loans - Impaired Loans (Details) Sheet http://cffc.com/role/DisclosureLoansImpairedLoansDetails Loans - Impaired Loans (Details) Details 71 false false R72.htm 40501 - Disclosure - Allowance for Loan Losses - Change in Allowance for Loan Losses (Details) Sheet http://cffc.com/role/DisclosureAllowanceForLoanLossesChangeInAllowanceForLoanLossesDetails Allowance for Loan Losses - Change in Allowance for Loan Losses (Details) Details 72 false false R73.htm 40502 - Disclosure - Allowance for Loan Losses - Allowance and Loans by Impairment Methodology (Details) Sheet http://cffc.com/role/DisclosureAllowanceForLoanLossesAllowanceAndLoansByImpairmentMethodologyDetails Allowance for Loan Losses - Allowance and Loans by Impairment Methodology (Details) Details 73 false false R74.htm 40503 - Disclosure - Allowance for Loan Losses - Credit Quality Indicators (Details) Sheet http://cffc.com/role/DisclosureAllowanceForLoanLossesCreditQualityIndicatorsDetails Allowance for Loan Losses - Credit Quality Indicators (Details) Details 74 false false R75.htm 40504 - Disclosure - Allowance for Loan Losses - Loans by Credit Quality Indicators - Performing and Non-Performing (Details) Sheet http://cffc.com/role/DisclosureAllowanceForLoanLossesLoansByCreditQualityIndicatorsPerformingAndNonPerformingDetails Allowance for Loan Losses - Loans by Credit Quality Indicators - Performing and Non-Performing (Details) Details 75 false false R76.htm 40601 - Disclosure - Other Real Estate Owned - Change in OREO (Details) Sheet http://cffc.com/role/DisclosureOtherRealEstateOwnedChangeInOreoDetails Other Real Estate Owned - Change in OREO (Details) Details 76 false false R77.htm 40602 - Disclosure - Other Real Estate Owned - Changes in the Allowance for OREO Losses (Details) Sheet http://cffc.com/role/DisclosureOtherRealEstateOwnedChangesInAllowanceForOreoLossesDetails Other Real Estate Owned - Changes in the Allowance for OREO Losses (Details) Details 77 false false R78.htm 40701 - Disclosure - Corporate Premises and Equipment - Classifications of Corporate Premises and Equipment (Details) Sheet http://cffc.com/role/DisclosureCorporatePremisesAndEquipmentClassificationsOfCorporatePremisesAndEquipmentDetails Corporate Premises and Equipment - Classifications of Corporate Premises and Equipment (Details) Details 78 false false R79.htm 40801 - Disclosure - Time Deposits - Time Deposits (Details) Sheet http://cffc.com/role/DisclosureTimeDepositsTimeDepositsDetails Time Deposits - Time Deposits (Details) Details 79 false false R80.htm 40802 - Disclosure - Time Deposits - Remaining Maturities on Time Deposits (Details) Sheet http://cffc.com/role/DisclosureTimeDepositsRemainingMaturitiesOnTimeDepositsDetails Time Deposits - Remaining Maturities on Time Deposits (Details) Details 80 false false R81.htm 40901 - Disclosure - Borrowings - Short-term Borrowings (Details) Sheet http://cffc.com/role/DisclosureBorrowingsShortTermBorrowingsDetails Borrowings - Short-term Borrowings (Details) Details 81 false false R82.htm 40902 - Disclosure - Borrowings - Long-term Borrowings (Details) Sheet http://cffc.com/role/DisclosureBorrowingsLongTermBorrowingsDetails Borrowings - Long-term Borrowings (Details) Details 82 false false R83.htm 40903 - Disclosure - Borrowings - FHLB Advances (Details) Sheet http://cffc.com/role/DisclosureBorrowingsFhlbAdvancesDetails Borrowings - FHLB Advances (Details) Details 83 false false R84.htm 40904 - Disclosure - Borrowings - Contractual Maturities (Details) Sheet http://cffc.com/role/DisclosureBorrowingsContractualMaturitiesDetails Borrowings - Contractual Maturities (Details) Details 84 false false R85.htm 40905 - Disclosure - Borrowings - Line of Credit and other disclosures (Details) Sheet http://cffc.com/role/DisclosureBorrowingsLineOfCreditAndOtherDisclosuresDetails Borrowings - Line of Credit and other disclosures (Details) Details 85 false false R86.htm 40906 - Disclosure - Borrowings- Statutory Trusts (Details) Sheet http://cffc.com/role/DisclosureBorrowingsStatutoryTrustsDetails Borrowings- Statutory Trusts (Details) Details 86 false false R87.htm 41001 - Disclosure - Shareholders??? Equity, Other Comprehensive Income and Earnings Per Common Share - Shareholders' Equity (Preferred Shares) (Details) Sheet http://cffc.com/role/DisclosureShareholdersEquityOtherComprehensiveIncomeAndEarningsPerCommonShareShareholdersEquityPreferredSharesDetails Shareholders??? Equity, Other Comprehensive Income and Earnings Per Common Share - Shareholders' Equity (Preferred Shares) (Details) Details 87 false false R88.htm 41002 - Disclosure - Shareholders' Equity, Other Comprehensive Income and Earnings Per Common Share - Shareholders' Equity (Common Shares) (Details) Sheet http://cffc.com/role/DisclosureShareholdersEquityOtherComprehensiveIncomeAndEarningsPerCommonShareShareholdersEquityCommonSharesDetails Shareholders' Equity, Other Comprehensive Income and Earnings Per Common Share - Shareholders' Equity (Common Shares) (Details) Details 88 false false R89.htm 41003 - Disclosure - Shareholders??? Equity and Earnings Per Common Share - Accumulated Other Comprehensive Income (Details) Sheet http://cffc.com/role/DisclosureShareholdersEquityAndEarningsPerCommonShareAccumulatedOtherComprehensiveIncomeDetails Shareholders??? Equity and Earnings Per Common Share - Accumulated Other Comprehensive Income (Details) Details 89 false false R90.htm 41004 - Disclosure - Shareholders??? Equity and Earnings Per Common Share - Earnings Per Common Share (Details) Sheet http://cffc.com/role/DisclosureShareholdersEquityAndEarningsPerCommonShareEarningsPerCommonShareDetails Shareholders??? Equity and Earnings Per Common Share - Earnings Per Common Share (Details) Details 90 false false R91.htm 41005 - Disclosure - Shareholders??? Equity and Earnings Per Common Share - Antidilutive Securities (Details) Sheet http://cffc.com/role/DisclosureShareholdersEquityAndEarningsPerCommonShareAntidilutiveSecuritiesDetails Shareholders??? Equity and Earnings Per Common Share - Antidilutive Securities (Details) Details 91 false false R92.htm 41101 - Disclosure - Income Taxes - Components of Income Tax Expense (Details) Sheet http://cffc.com/role/DisclosureIncomeTaxesComponentsOfIncomeTaxExpenseDetails Income Taxes - Components of Income Tax Expense (Details) Details 92 false false R93.htm 41102 - Disclosure - Income Taxes - Income Tax Rate Reconciliation (Details) Sheet http://cffc.com/role/DisclosureIncomeTaxesIncomeTaxRateReconciliationDetails Income Taxes - Income Tax Rate Reconciliation (Details) Details 93 false false R94.htm 41103 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details) Sheet http://cffc.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails Income Taxes - Deferred Tax Assets and Liabilities (Details) Details 94 false false R95.htm 41201 - Disclosure - Employee Benefit Plans - Defined Contribution Plans (Details) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansDefinedContributionPlansDetails Employee Benefit Plans - Defined Contribution Plans (Details) Details 95 false false R96.htm 41202 - Disclosure - Employee Benefit Plans - Defined Benefit Plans - Plan Requirements (Details) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansDefinedBenefitPlansPlanRequirementsDetails Employee Benefit Plans - Defined Benefit Plans - Plan Requirements (Details) Details 96 false false R97.htm 41203 - Disclosure - Employee Benefit Plans - Defined Benefit Plans - Change in Plan Obligation and Fair Value, Funded Status and Fair Value Inputs (Details) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansDefinedBenefitPlansChangeInPlanObligationAndFairValueFundedStatusAndFairValueInputsDetails Employee Benefit Plans - Defined Benefit Plans - Change in Plan Obligation and Fair Value, Funded Status and Fair Value Inputs (Details) Details 97 false false R98.htm 41204 - Disclosure - Employee Benefit Plans - Defined Benefit Plans - Components of Periodic Pension Costs (Details) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansDefinedBenefitPlansComponentsOfPeriodicPensionCostsDetails Employee Benefit Plans - Defined Benefit Plans - Components of Periodic Pension Costs (Details) Details 98 false false R99.htm 41205 - Disclosure - Employee Benefit Plans - Defined Benefit Plans - Weighted-average assumptions (Details) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansDefinedBenefitPlansWeightedAverageAssumptionsDetails Employee Benefit Plans - Defined Benefit Plans - Weighted-average assumptions (Details) Details 99 false false R100.htm 41206 - Disclosure - Employee Benefit Plans - Defined Benefit Plans - Expected Benefit Payments (Details) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansDefinedBenefitPlansExpectedBenefitPaymentsDetails Employee Benefit Plans - Defined Benefit Plans - Expected Benefit Payments (Details) Details 100 false false R101.htm 41207 - Disclosure - Employee Benefit Plans - Defined Benefit Plans - Weighted-Average Asset Allocations (Details) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansDefinedBenefitPlansWeightedAverageAssetAllocationsDetails Employee Benefit Plans - Defined Benefit Plans - Weighted-Average Asset Allocations (Details) Details 101 false false R102.htm 41208 - Disclosure - Employee Benefit Plans - Defined Benefit Plans - Fair Value of Assets (Details) Sheet http://cffc.com/role/DisclosureEmployeeBenefitPlansDefinedBenefitPlansFairValueOfAssetsDetails Employee Benefit Plans - Defined Benefit Plans - Fair Value of Assets (Details) Details 102 false false R103.htm 41301 - Disclosure - Related Party Transactions (Details) Sheet http://cffc.com/role/DisclosureRelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://cffc.com/role/DisclosureRelatedPartyTransactions 103 false false R104.htm 41401 - Disclosure - Share-Based Plans - Plan Information (Details) Sheet http://cffc.com/role/DisclosureShareBasedPlansPlanInformationDetails Share-Based Plans - Plan Information (Details) Details 104 false false R105.htm 41402 - Disclosure - Share-Based Plans - Stock Option Activity (Details) Sheet http://cffc.com/role/DisclosureShareBasedPlansStockOptionActivityDetails Share-Based Plans - Stock Option Activity (Details) Details 105 false false R106.htm 41403 - Disclosure - Share-Based Plans - Stock Options Outstanding and Exercisable (Details) Sheet http://cffc.com/role/DisclosureShareBasedPlansStockOptionsOutstandingAndExercisableDetails Share-Based Plans - Stock Options Outstanding and Exercisable (Details) Details 106 false false R107.htm 41404 - Disclosure - Share-Based Plans - Restricted Stock Activity (Details) Sheet http://cffc.com/role/DisclosureShareBasedPlansRestrictedStockActivityDetails Share-Based Plans - Restricted Stock Activity (Details) Details 107 false false R108.htm 41501 - Disclosure - Regulatory Requirements and Restrictions - New minimum capital ratios (Details) Sheet http://cffc.com/role/DisclosureRegulatoryRequirementsAndRestrictionsNewMinimumCapitalRatiosDetails Regulatory Requirements and Restrictions - New minimum capital ratios (Details) Details 108 false false R109.htm 41502 - Disclosure - Regulatory Requirements and Restrictions - Capital Amounts and Ratios (Details) Sheet http://cffc.com/role/DisclosureRegulatoryRequirementsAndRestrictionsCapitalAmountsAndRatiosDetails Regulatory Requirements and Restrictions - Capital Amounts and Ratios (Details) Details 109 false false R110.htm 41503 - Disclosure - Regulatory Requirements and Restrictions - Capital Purchase Program (Details) Sheet http://cffc.com/role/DisclosureRegulatoryRequirementsAndRestrictionsCapitalPurchaseProgramDetails Regulatory Requirements and Restrictions - Capital Purchase Program (Details) Details 110 false false R111.htm 41504 - Disclosure - Regulatory Requirements and Restrictions - Trust Preferred Securities (Details) Sheet http://cffc.com/role/DisclosureRegulatoryRequirementsAndRestrictionsTrustPreferredSecuritiesDetails Regulatory Requirements and Restrictions - Trust Preferred Securities (Details) Details 111 false false R112.htm 41601 - Disclosure - Commitments and Financial Instruments with Off-Balance-Sheet Risk - Loan Commitments and Derivatives (Details) Sheet http://cffc.com/role/DisclosureCommitmentsAndFinancialInstrumentsWithOffBalanceSheetRiskLoanCommitmentsAndDerivativesDetails Commitments and Financial Instruments with Off-Balance-Sheet Risk - Loan Commitments and Derivatives (Details) Details 112 false false R113.htm 41602 - Disclosure - Commitments and Financial Instruments with Off-Balance-Sheet Risk - Changes in Allowance for Indemnifications Losses (Details) Sheet http://cffc.com/role/DisclosureCommitmentsAndFinancialInstrumentsWithOffBalanceSheetRiskChangesInAllowanceForIndemnificationsLossesDetails Commitments and Financial Instruments with Off-Balance-Sheet Risk - Changes in Allowance for Indemnifications Losses (Details) Details 113 false false R114.htm 41603 - Disclosure - Commitments and Financial Instruments with Off-Balance-Sheet Risk - Future Minimum Lease Payments - 10K (Details) Sheet http://cffc.com/role/DisclosureCommitmentsAndFinancialInstrumentsWithOffBalanceSheetRiskFutureMinimumLeasePayments10kDetails Commitments and Financial Instruments with Off-Balance-Sheet Risk - Future Minimum Lease Payments - 10K (Details) Details 114 false false R115.htm 41701 - Disclosure - Fair Value of Assets and Liabilities - Financial Assets Measured at Fair Value on a Recurring Basis (Details) Sheet http://cffc.com/role/DisclosureFairValueOfAssetsAndLiabilitiesFinancialAssetsMeasuredAtFairValueOnRecurringBasisDetails Fair Value of Assets and Liabilities - Financial Assets Measured at Fair Value on a Recurring Basis (Details) Details 115 false false R116.htm 41702 - Disclosure - Fair Value of Assets and Liabilities - Financial Assets Measured at Fair Value on Non-Recurring Basis (Details) Sheet http://cffc.com/role/DisclosureFairValueOfAssetsAndLiabilitiesFinancialAssetsMeasuredAtFairValueOnNonRecurringBasisDetails Fair Value of Assets and Liabilities - Financial Assets Measured at Fair Value on Non-Recurring Basis (Details) Details 116 false false R117.htm 41703 - Disclosure - Fair Value of Assets and Liabilities - Carrying Value and Estimated Fair Value of Financial Instruments (Details) Sheet http://cffc.com/role/DisclosureFairValueOfAssetsAndLiabilitiesCarryingValueAndEstimatedFairValueOfFinancialInstrumentsDetails Fair Value of Assets and Liabilities - Carrying Value and Estimated Fair Value of Financial Instruments (Details) Details 117 false false R118.htm 41801 - Disclosure - Business Segments - Segment Reporting - (Details) Sheet http://cffc.com/role/DisclosureBusinessSegmentsSegmentReportingDetails Business Segments - Segment Reporting - (Details) Details 118 false false R119.htm 41802 - Disclosure - Business Segments - Segment Debt (Details) Sheet http://cffc.com/role/DisclosureBusinessSegmentsSegmentDebtDetails Business Segments - Segment Debt (Details) Details 119 false false R120.htm 41901 - Disclosure - Interest Rate Swaps (Details) Sheet http://cffc.com/role/DisclosureInterestRateSwapsDetails Interest Rate Swaps (Details) Details http://cffc.com/role/DisclosureInterestRateSwaps 120 false false R121.htm 42001 - Disclosure - Parent Company Condensed Financial Information - Condensed Balance Sheet (Details) Sheet http://cffc.com/role/DisclosureParentCompanyCondensedFinancialInformationCondensedBalanceSheetDetails Parent Company Condensed Financial Information - Condensed Balance Sheet (Details) Details 121 false false R122.htm 42002 - Disclosure - Parent Company Condensed Financial Information - Statements of Income (Details) Sheet http://cffc.com/role/DisclosureParentCompanyCondensedFinancialInformationStatementsOfIncomeDetails Parent Company Condensed Financial Information - Statements of Income (Details) Details 122 false false R123.htm 42003 - Disclosure - Parent Company Condensed Financial Information - Condensed Cash Flow Statement (Details) Sheet http://cffc.com/role/DisclosureParentCompanyCondensedFinancialInformationCondensedCashFlowStatementDetails Parent Company Condensed Financial Information - Condensed Cash Flow Statement (Details) Details 123 false false R124.htm 42101 - Disclosure - Other Noninterest Expenses (Details) Sheet http://cffc.com/role/DisclosureOtherNoninterestExpensesDetails Other Noninterest Expenses (Details) Details http://cffc.com/role/DisclosureOtherNoninterestExpensesTables 124 false false R125.htm 42201 - Disclosure - Quarterly Condensed Statements of Income-Unaudited (Details) Sheet http://cffc.com/role/DisclosureQuarterlyCondensedStatementsOfIncomeUnauditedDetails Quarterly Condensed Statements of Income-Unaudited (Details) Details http://cffc.com/role/DisclosureQuarterlyCondensedStatementsOfIncomeUnauditedTables 125 false false All Reports Book All Reports cffi-20151231.xml cffi-20151231.xsd cffi-20151231_cal.xml cffi-20151231_def.xml cffi-20151231_lab.xml cffi-20151231_pre.xml true true