3.2.0.727 html 552 320 1 true 59 0 false 7 false false R1.htm 00050 - Document - Document and Entity Information Sheet http://www.cbtrustcorp.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 00100 - Statement - Consolidated Balance Sheets Sheet http://www.cbtrustcorp.com/role/StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 00150 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.cbtrustcorp.com/role/StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 00200 - Statement - Consolidated Statements of Income Sheet http://www.cbtrustcorp.com/role/StatementConsolidatedStatementsOfIncome Consolidated Statements of Income Statements 4 false false R5.htm 00300 - Statement - Consolidated Statements of Comprehensive Income Sheet http://www.cbtrustcorp.com/role/StatementConsolidatedStatementsOfComprehensiveIncome Consolidated Statements of Comprehensive Income Statements 5 false false R6.htm 00400 - Statement - Consolidated Statements of Shareholders' Equity Sheet http://www.cbtrustcorp.com/role/StatementConsolidatedStatementsOfShareholdersEquity Consolidated Statements of Shareholders' Equity Statements 6 false false R7.htm 00500 - Statement - Consolidated Statements of Cash Flows Sheet http://www.cbtrustcorp.com/role/StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 10101 - Disclosure - Nature of Banking Activities and Significant Accounting Policies Sheet http://www.cbtrustcorp.com/role/DisclosureNatureOfBankingActivitiesAndSignificantAccountingPolicies Nature of Banking Activities and Significant Accounting Policies Notes 8 false false R9.htm 10201 - Disclosure - Securities Sheet http://www.cbtrustcorp.com/role/DisclosureSecurities Securities Notes 9 false false R10.htm 10301 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLosses Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses Notes 10 false false R11.htm 10401 - Disclosure - Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses Sheet http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLosses Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses Notes 11 false false R12.htm 10501 - Disclosure - FDIC Agreements and FDIC Indemnification Asset Sheet http://www.cbtrustcorp.com/role/DisclosureFdicAgreementsAndFdicIndemnificationAsset FDIC Agreements and FDIC Indemnification Asset Notes 12 false false R13.htm 10601 - Disclosure - Other Real Estate Owned Sheet http://www.cbtrustcorp.com/role/DisclosureOtherRealEstateOwned Other Real Estate Owned Notes 13 false false R14.htm 10701 - Disclosure - Deposits Sheet http://www.cbtrustcorp.com/role/DisclosureDeposits Deposits Notes 14 false false R15.htm 10801 - Disclosure - Accumulated Other Comprehensive (Loss) Income Sheet http://www.cbtrustcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossIncome Accumulated Other Comprehensive (Loss) Income Notes 15 false false R16.htm 10901 - Disclosure - Fair Values of Assets and Liabilities Sheet http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilities Fair Values of Assets and Liabilities Notes 16 false false R17.htm 11001 - Disclosure - Earnings Per Common Share Sheet http://www.cbtrustcorp.com/role/DisclosureEarningsPerCommonShare Earnings Per Common Share Notes 17 false false R18.htm 11101 - Disclosure - Employee Benefit Plan Sheet http://www.cbtrustcorp.com/role/DisclosureEmployeeBenefitPlan Employee Benefit Plan Notes 18 false false R19.htm 11201 - Disclosure - Cash Flow Hedge Sheet http://www.cbtrustcorp.com/role/DisclosureCashFlowHedge Cash Flow Hedge Notes 19 false false R20.htm 30203 - Disclosure - Securities (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureSecuritiesTables Securities (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureSecurities 20 false false R21.htm 30303 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLosses 21 false false R22.htm 30403 - Disclosure - Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLossesTables Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLosses 22 false false R23.htm 30503 - Disclosure - FDIC Agreements and FDIC Indemnification Asset (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureFdicAgreementsAndFdicIndemnificationAssetTables FDIC Agreements and FDIC Indemnification Asset (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureFdicAgreementsAndFdicIndemnificationAsset 23 false false R24.htm 30603 - Disclosure - Other Real Estate Owned (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureOtherRealEstateOwnedTables Other Real Estate Owned (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureOtherRealEstateOwned 24 false false R25.htm 30703 - Disclosure - Deposits (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureDepositsTables Deposits (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureDeposits 25 false false R26.htm 30803 - Disclosure - Accumulated Other Comprehensive (Loss) Income (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossIncomeTables Accumulated Other Comprehensive (Loss) Income (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossIncome 26 false false R27.htm 30903 - Disclosure - Fair Values of Assets and Liabilities (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesTables Fair Values of Assets and Liabilities (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilities 27 false false R28.htm 31003 - Disclosure - Earnings Per Common Share (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureEarningsPerCommonShareTables Earnings Per Common Share (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureEarningsPerCommonShare 28 false false R29.htm 31103 - Disclosure - Employee Benefit Plan (Tables) Sheet http://www.cbtrustcorp.com/role/DisclosureEmployeeBenefitPlanTables Employee Benefit Plan (Tables) Tables http://www.cbtrustcorp.com/role/DisclosureEmployeeBenefitPlan 29 false false R30.htm 40101 - Disclosure - Nature of Banking Activities and Significant Accounting Policies (Narrative) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureNatureOfBankingActivitiesAndSignificantAccountingPoliciesNarrativeDetails Nature of Banking Activities and Significant Accounting Policies (Narrative) (Details) Details 30 false false R31.htm 40201 - Disclosure - Securities (Narrative) (Detail) Sheet http://www.cbtrustcorp.com/role/DisclosureSecuritiesNarrativeDetail Securities (Narrative) (Detail) Details http://www.cbtrustcorp.com/role/DisclosureSecuritiesTables 31 false false R32.htm 40202 - Disclosure - Securities (Amortized Costs and Fair Values of Securities Available for Sale and Held to Maturity) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureSecuritiesAmortizedCostsAndFairValuesOfSecuritiesAvailableForSaleAndHeldToMaturityDetails Securities (Amortized Costs and Fair Values of Securities Available for Sale and Held to Maturity) (Details) Details http://www.cbtrustcorp.com/role/DisclosureSecuritiesTables 32 false false R33.htm 40203 - Disclosure - Securities (Amortized Cost and Fair Value of Securities by Contractual Maturity) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureSecuritiesAmortizedCostAndFairValueOfSecuritiesByContractualMaturityDetails Securities (Amortized Cost and Fair Value of Securities by Contractual Maturity) (Details) Details http://www.cbtrustcorp.com/role/DisclosureSecuritiesTables 33 false false R34.htm 40204 - Disclosure - Securities (Summary of Realized Gains and Losses on Sales of Securities) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureSecuritiesSummaryOfRealizedGainsAndLossesOnSalesOfSecuritiesDetails Securities (Summary of Realized Gains and Losses on Sales of Securities) (Details) Details http://www.cbtrustcorp.com/role/DisclosureSecuritiesTables 34 false false R35.htm 40205 - Disclosure - Securities (Summary of Fair Value and Gross Unrealized Losses for Securities Available for Sale) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureSecuritiesSummaryOfFairValueAndGrossUnrealizedLossesForSecuritiesAvailableForSaleDetails Securities (Summary of Fair Value and Gross Unrealized Losses for Securities Available for Sale) (Details) Details http://www.cbtrustcorp.com/role/DisclosureSecuritiesTables 35 false false R36.htm 40301 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Narrative) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesNarrativeDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Narrative) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 36 false false R37.htm 40302 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Summary of Non-Covered Loans) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesSummaryOfNonCoveredLoansDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Summary of Non-Covered Loans) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 37 false false R38.htm 40303 - Disclosure - Loans Not Covered By FDIC Shared-Loss Agreements (Non-Covered Loans) And Related Allowance For Loan Losses (Summary of Outstanding Principal Balance and Carrying Amounts of PCI Loans) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesSummaryOfOutstandingPrincipalBalanceAndCarryingAmountsOfPciLoansDetails Loans Not Covered By FDIC Shared-Loss Agreements (Non-Covered Loans) And Related Allowance For Loan Losses (Summary of Outstanding Principal Balance and Carrying Amounts of PCI Loans) (Details) Details 38 false false R39.htm 40304 - Disclosure - Loans Not Covered By FDIC Shared-Loss Agreements (Non-Covered Loans) And Related Allowance For Loan Losses (Schedule of Change in Accretable Yield Balance for PCI Loans) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesScheduleOfChangeInAccretableYieldBalanceForPciLoansDetails Loans Not Covered By FDIC Shared-Loss Agreements (Non-Covered Loans) And Related Allowance For Loan Losses (Schedule of Change in Accretable Yield Balance for PCI Loans) (Details) Details 39 false false R40.htm 40305 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Summary of Information Related to Impaired Loans) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesSummaryOfInformationRelatedToImpairedLoansDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Summary of Information Related to Impaired Loans) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 40 false false R41.htm 40306 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Summary of Financial Receivable Impaired Average Recorded Investment) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesSummaryOfFinancialReceivableImpairedAverageRecordedInvestmentDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Summary of Financial Receivable Impaired Average Recorded Investment) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 41 false false R42.htm 40307 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Summarizes Non-Accrual Loans, Excluding PCI Loans, by Loan Category) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesSummarizesNonAccrualLoansExcludingPciLoansByLoanCategoryDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Summarizes Non-Accrual Loans, Excluding PCI Loans, by Loan Category) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 42 false false R43.htm 40309 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Age Analysis of Past Due Status of Non-Covered Loans, Excluding PCI Loans) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesAgeAnalysisOfPastDueStatusOfNonCoveredLoansExcludingPciLoansDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Age Analysis of Past Due Status of Non-Covered Loans, Excluding PCI Loans) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 43 false false R44.htm 40310 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Allowance for Loan Losses on Non-Covered Loans, Excluding PCI Loans, by Segment) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesAllowanceForLoanLossesOnNonCoveredLoansExcludingPciLoansBySegmentDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Allowance for Loan Losses on Non-Covered Loans, Excluding PCI Loans, by Segment) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 44 false false R45.htm 40311 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Non-Covered Loans Evaluated for Impairment) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesNonCoveredLoansEvaluatedForImpairmentDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Non-Covered Loans Evaluated for Impairment) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 45 false false R46.htm 40312 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Non-Covered Loans Evaluated for Impairment Footnote) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesNonCoveredLoansEvaluatedForImpairmentFootnoteDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Non-Covered Loans Evaluated for Impairment Footnote) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 46 false false R47.htm 40313 - Disclosure - Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Non-Covered Loans, Excluding PCI Loans, by Credit Quality Indicator) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesNonCoveredLoansExcludingPciLoansByCreditQualityIndicatorDetails Loans Not Covered by FDIC Shared-Loss Agreements (Non-Covered Loans) and Related Allowance for Loan Losses (Non-Covered Loans, Excluding PCI Loans, by Credit Quality Indicator) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansNotCoveredByFdicSharedLossAgreementsNonCoveredLoansAndRelatedAllowanceForLoanLossesTables 47 false false R48.htm 40401 - Disclosure - Loans Covered by FDIC Shared-loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Narrative) (Detail) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLossesNarrativeDetail Loans Covered by FDIC Shared-loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Narrative) (Detail) Details 48 false false R49.htm 40402 - Disclosure - Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Summary of Covered Loans) (Detail) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLossesSummaryOfCoveredLoansDetail Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Summary of Covered Loans) (Detail) Details http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLossesTables 49 false false R50.htm 40403 - Disclosure - Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Summary of Covered Loans Collectively Evaluated for Impairment in the Allowance for Loan Losses) (Detail) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLossesSummaryOfCoveredLoansCollectivelyEvaluatedForImpairmentInAllowanceForLoanLossesDetail Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Summary of Covered Loans Collectively Evaluated for Impairment in the Allowance for Loan Losses) (Detail) Details http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLossesTables 50 false false R51.htm 40404 - Disclosure - Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Summary of Changes in Accretable Yield) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLossesSummaryOfChangesInAccretableYieldDetails Loans Covered by FDIC Shared-Loss Agreements (Covered Loans) and Related Allowance for Loan Losses (Summary of Changes in Accretable Yield) (Details) Details http://www.cbtrustcorp.com/role/DisclosureLoansCoveredByFdicSharedLossAgreementsCoveredLoansAndRelatedAllowanceForLoanLossesTables 51 false false R52.htm 40501 - Disclosure - FDIC Agreements and FDIC Indemnification Asset (Narrative) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureFdicAgreementsAndFdicIndemnificationAssetNarrativeDetails FDIC Agreements and FDIC Indemnification Asset (Narrative) (Details) Details http://www.cbtrustcorp.com/role/DisclosureFdicAgreementsAndFdicIndemnificationAssetTables 52 false false R53.htm 40502 - Disclosure - FDIC Agreements and FDIC Indemnification Asset (Summary Balances of FDIC Indemnification Asset) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureFdicAgreementsAndFdicIndemnificationAssetSummaryBalancesOfFdicIndemnificationAssetDetails FDIC Agreements and FDIC Indemnification Asset (Summary Balances of FDIC Indemnification Asset) (Details) Details http://www.cbtrustcorp.com/role/DisclosureFdicAgreementsAndFdicIndemnificationAssetTables 53 false false R54.htm 40601 - Disclosure - Other Real Estate Owned (Schedule of Other Real Estate Owned) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureOtherRealEstateOwnedScheduleOfOtherRealEstateOwnedDetails Other Real Estate Owned (Schedule of Other Real Estate Owned) (Details) Details http://www.cbtrustcorp.com/role/DisclosureOtherRealEstateOwnedTables 54 false false R55.htm 40701 - Disclosure - Deposits (Summary of Interest Bearing Deposits) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureDepositsSummaryOfInterestBearingDepositsDetails Deposits (Summary of Interest Bearing Deposits) (Details) Details http://www.cbtrustcorp.com/role/DisclosureDepositsTables 55 false false R56.htm 40801 - Disclosure - Accumulated Other Comprehensive (Loss) Income (Summary of Accumulated Other Comprehensive (Loss) Income) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossIncomeSummaryOfAccumulatedOtherComprehensiveLossIncomeDetails Accumulated Other Comprehensive (Loss) Income (Summary of Accumulated Other Comprehensive (Loss) Income) (Details) Details http://www.cbtrustcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossIncomeTables 56 false false R57.htm 40802 - Disclosure - Accumulated Other Comprehensive (Loss) Income (Effects of Reclassifications Out of AOCI) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossIncomeEffectsOfReclassificationsOutOfAociDetails Accumulated Other Comprehensive (Loss) Income (Effects of Reclassifications Out of AOCI) (Details) Details http://www.cbtrustcorp.com/role/DisclosureAccumulatedOtherComprehensiveLossIncomeTables 57 false false R58.htm 40901 - Disclosure - Fair Values of Assets and Liabilities (Narrative) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesNarrativeDetails Fair Values of Assets and Liabilities (Narrative) (Details) Details http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesTables 58 false false R59.htm 40902 - Disclosure - Fair Values of Assets and Liabilities (Assets and Liabilities Recorded at Fair Value on Recurring Basis) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetails Fair Values of Assets and Liabilities (Assets and Liabilities Recorded at Fair Value on Recurring Basis) (Details) Details http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesTables 59 false false R60.htm 40903 - Disclosure - Fair Values of Assets and Liabilities (Assets and Liabilities Measured at Fair Value on Nonrecurring Basis) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesAssetsAndLiabilitiesMeasuredAtFairValueOnNonrecurringBasisDetails Fair Values of Assets and Liabilities (Assets and Liabilities Measured at Fair Value on Nonrecurring Basis) (Details) Details http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesTables 60 false false R61.htm 40904 - Disclosure - Fair Values of Assets and Liabilities (Summary of Fair Value of Financial Instruments) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesSummaryOfFairValueOfFinancialInstrumentsDetails Fair Values of Assets and Liabilities (Summary of Fair Value of Financial Instruments) (Details) Details http://www.cbtrustcorp.com/role/DisclosureFairValuesOfAssetsAndLiabilitiesTables 61 false false R62.htm 41001 - Disclosure - Earnings Per Common Share (Narrative) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureEarningsPerCommonShareNarrativeDetails Earnings Per Common Share (Narrative) (Details) Details http://www.cbtrustcorp.com/role/DisclosureEarningsPerCommonShareTables 62 false false R63.htm 41002 - Disclosure - Earnings Per Common Share (Computation of Earnings per Share) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureEarningsPerCommonShareComputationOfEarningsPerShareDetails Earnings Per Common Share (Computation of Earnings per Share) (Details) Details http://www.cbtrustcorp.com/role/DisclosureEarningsPerCommonShareTables 63 false false R64.htm 41105 - Disclosure - Employee Benefit Plan (Components of Net Periodic Benefit Cost for Plan) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureEmployeeBenefitPlanComponentsOfNetPeriodicBenefitCostForPlanDetails Employee Benefit Plan (Components of Net Periodic Benefit Cost for Plan) (Details) Details http://www.cbtrustcorp.com/role/DisclosureEmployeeBenefitPlanTables 64 false false R65.htm 41201 - Disclosure - Cash Flow Hedge (Narrative) (Details) Sheet http://www.cbtrustcorp.com/role/DisclosureCashFlowHedgeNarrativeDetails Cash Flow Hedge (Narrative) (Details) Details http://www.cbtrustcorp.com/role/DisclosureCashFlowHedge 65 false false All Reports Book All Reports In ''Consolidated Balance Sheets'', column(s) 2, 4, 5, 6 are contained in other reports, so were removed by flow through suppression. In ''Consolidated Statements of Income'', column(s) 13 are contained in other reports, so were removed by flow through suppression. In ''Consolidated Statements of Cash Flows'', column(s) 1, 2 are contained in other reports, so were removed by flow through suppression. esxb-20150630.xml esxb-20150630_cal.xml esxb-20150630_def.xml esxb-20150630_lab.xml esxb-20150630_pre.xml esxb-20150630.xsd true true