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v2.4.1.9

Loans, Troubled Debt Restructurings Segregated by Class (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 Loan | Mar. 31, 2014 Loan | Dec. 31, 2014 Loan
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | 6 us-gaap_FinancingReceivableModificationsNumberOfContracts2 | 4 us-gaap_FinancingReceivableModificationsNumberOfContracts2 | 22 us-gaap_FinancingReceivableModificationsNumberOfContracts2
Post-Modification Outstanding Balance | $ 326 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | $ 167 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 | $ 7,898 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Defaulted restructured loans, number of loans | 1 us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 | 2 us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 |
Defaulted restructured loans, recorded investment | 261 us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 | 34 us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 |
Term Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 326 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember | 167 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember | 6,982 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember
Rate Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember
Combination [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember | 916 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember
Commercial Construction [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans |  |  | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Post-Modification Outstanding Balance |  |  | 7 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Defaulted restructured loans, number of loans | 0 us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember | 0 us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember |
Defaulted restructured loans, recorded investment | 0 us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember | 0 us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember |
Commercial Construction [Member] | Term Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance |  |  | 7 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember
Commercial Construction [Member] | Rate Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance |  |  | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember
Commercial Construction [Member] | Combination [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance |  |  | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember
Commercial Secured by Real Estate [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | 4 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 11 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember
Post-Modification Outstanding Balance | 290 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 126 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 5,775 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember
Defaulted restructured loans, number of loans | 1 us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 0 us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember |
Defaulted restructured loans, recorded investment | 261 us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 0 us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember |
Commercial Secured by Real Estate [Member] | Term Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 290 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember | 126 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember | 5,707 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember
Commercial Secured by Real Estate [Member] | Rate Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember
Commercial Secured by Real Estate [Member] | Combination [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember | 68 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_CommercialRealEstateOtherReceivableMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember
Commercial Other [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember | 8 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember
Post-Modification Outstanding Balance | 36 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember | 41 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember | 1,268 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember
Defaulted restructured loans, number of loans | 0 us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember | 2 us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember |
Defaulted restructured loans, recorded investment | 0 us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember | 34 us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember |
Commercial Other [Member] | Term Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 36 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember | 41 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember | 1,268 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember
Commercial Other [Member] | Rate Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember
Commercial Other [Member] | Combination [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ctbi_CommercialOtherMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember
Real Estate Mortgage [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans |  |  | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_MortgageLoansOnRealEstateMember
Post-Modification Outstanding Balance |  |  | 848 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_MortgageLoansOnRealEstateMember
Real Estate Mortgage [Member] | Term Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance |  |  | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_MortgageLoansOnRealEstateMember / ctbi_LoanRestructuringModificationAxis = ctbi_ContractualInterestRateReductionMember
Real Estate Mortgage [Member] | Rate Modification [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance |  |  | 0 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_MortgageLoansOnRealEstateMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityMember
Real Estate Mortgage [Member] | Combination [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Post-Modification Outstanding Balance |  |  | $ 848 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = us-gaap_MortgageLoansOnRealEstateMember / ctbi_LoanRestructuringModificationAxis = ctbi_ExtendedMaturityAndRateReductionMember

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953682-111524 + Details
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- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953682-111524 + Details
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