XML 1079 R60.htm IDEA: XBRL DOCUMENT v2.4.1.9

Mortgage Banking and Servicing Rights (Details) (USD $)
In Thousands, unless otherwise specified

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Mortgage Banking and Servicing Rights [Abstract]

Net gain on sale of loans held for sale

$ 1,468us-gaap_GainLossOnSaleOfMortgageLoans

$ 3,098us-gaap_GainLossOnSaleOfMortgageLoans

$ 2,562us-gaap_GainLossOnSaleOfMortgageLoans

Net loan servicing income (expense)

Servicing fees

1,129us-gaap_ContractuallySpecifiedServicingFeesAmount

1,121us-gaap_ContractuallySpecifiedServicingFeesAmount

1,083us-gaap_ContractuallySpecifiedServicingFeesAmount

Late fees

112us-gaap_LateFeeIncomeGeneratedByServicingFinancialAssetsAmount

98us-gaap_LateFeeIncomeGeneratedByServicingFinancialAssetsAmount

83us-gaap_LateFeeIncomeGeneratedByServicingFinancialAssetsAmount

Ancillary fees

149us-gaap_AncillaryFeeIncomeGeneratedByServicingFinancialAssetsAmount

368us-gaap_AncillaryFeeIncomeGeneratedByServicingFinancialAssetsAmount

382us-gaap_AncillaryFeeIncomeGeneratedByServicingFinancialAssetsAmount

Fair value adjustments

(830)us-gaap_MortgageServicingRightsMSRImpairmentRecovery

206us-gaap_MortgageServicingRightsMSRImpairmentRecovery

(559)us-gaap_MortgageServicingRightsMSRImpairmentRecovery

Net loan servicing income

560ctbi_NetLoanServicingIncomeLoss

1,793ctbi_NetLoanServicingIncomeLoss

989ctbi_NetLoanServicingIncomeLoss

Mortgage banking income

2,028us-gaap_FeesAndCommissionsMortgageBanking

4,891us-gaap_FeesAndCommissionsMortgageBanking

3,551us-gaap_FeesAndCommissionsMortgageBanking

Loan service for benefit of others

441ctbi_LoanServiceForBenefitOfOthers

456ctbi_LoanServiceForBenefitOfOthers

419ctbi_LoanServiceForBenefitOfOthers

Custodial escrow balance

888ctbi_CustodianEscrowBalance

855ctbi_CustodianEscrowBalance

673ctbi_CustodianEscrowBalance

Servicing Asset at Fair Value, Amount [Roll Forward]

Fair value of MSRs, beginning of period

3,424us-gaap_ServicingAssetAtFairValueAmount

2,364us-gaap_ServicingAssetAtFairValueAmount

2,282us-gaap_ServicingAssetAtFairValueAmount

New servicing assets created

374us-gaap_ServicingAssetAtFairValueAdditions

854us-gaap_ServicingAssetAtFairValueAdditions

641us-gaap_ServicingAssetAtFairValueAdditions

Change in fair value during the period due to [Abstract]

Time decay

(162)us-gaap_ServicingAssetAtFairValueOtherChangesInFairValue

^[1]

(159)us-gaap_ServicingAssetAtFairValueOtherChangesInFairValue

^[1]

(116)us-gaap_ServicingAssetAtFairValueOtherChangesInFairValue

^[1]

Payoffs

(202)us-gaap_ServicingAssetAtFairValueOtherChangesThatAffectBalance

^[2]

(423)us-gaap_ServicingAssetAtFairValueOtherChangesThatAffectBalance

^[2]

(478)us-gaap_ServicingAssetAtFairValueOtherChangesThatAffectBalance

^[2]

Changes in valuation inputs or assumptions

(466)us-gaap_ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions

^[3]

788us-gaap_ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions

^[3]

35us-gaap_ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions

^[3]

Fair value of MSRs, end of period

$ 2,968us-gaap_ServicingAssetAtFairValueAmount

$ 3,424us-gaap_ServicingAssetAtFairValueAmount

$ 2,364us-gaap_ServicingAssetAtFairValueAmount

Discount rate of servicing assets and servicing liabilities (in hundredths)

10.10%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate

10.00%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate

10.50%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate

Weighted average default rates (in hundredths)

3.61%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueExpectedCreditLosses

3.36%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueExpectedCreditLosses

2.65%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueExpectedCreditLosses

Prepayment using andrew davidson model (in hundredths)

11.30%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed

9.70%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed

16.30%us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed

[1]	Represents decrease in value due to regularly scheduled loan principal payments and partial loan paydowns.
[2]	Represents decrease in value due to loans that paid off during the period.
[3]	Represents change in value resulting from market-driven changes in interest rates.

X

- Details

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X

- Definition

Amount maintained in connection with a loan servicing to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property.

+ References

No definition available.

+ Details

Name:	ctbi_CustodianEscrowBalance
Namespace Prefix:	ctbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Outstanding balance of underlying mortgage loans serviced for others

+ References

No definition available.

+ Details

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Namespace Prefix:	ctbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The net income (loss) from loan servicing activities that is included in earnings for the reporting period.

+ References

No definition available.

+ Details

Name:	ctbi_NetLoanServicingIncomeLoss
Namespace Prefix:	ctbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

All amounts that are due to the servicer of a financial asset, excluding contractually specified servicing fees and late fees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

All amounts that, per contract, are due to the servicer in exchange for servicing the financial asset and would no longer be received by a servicer if the beneficial owners of the serviced assets (or their trustees or agents) were to exercise their actual or potential authority under the contract to shift the servicing to another servicer. Depending on the servicing contract, those fees may include some or all of the difference between the interest rate collected on the asset being serviced and the rate to be paid to the beneficial owners of the asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The noninterest income derived from mortgage banking activities (fees and commissions), excluding fees earned from servicing third-party assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 13

-Article 9



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.13 (d))

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainLossOnSaleOfMortgageLoans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

All amounts that are due to the servicer of a financial asset as a result of the debt holder not meeting the monthly payment terms.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746

+ Details

Name:	us-gaap_LateFeeIncomeGeneratedByServicingFinancialAssetsAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_MortgageBankingAbstract
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X

- Definition

The adjustment to the carrying value of the rights retained or purchased to service mortgages. These adjustments are made when the estimate of the fair value is changed. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 4

-Subparagraph (a)(6),(7)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746

+ Details

Name:	us-gaap_MortgageServicingRightsMSRImpairmentRecovery
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746

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- Details

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Balance Type:	na
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- Definition

The net Increase or Decrease in fair value as a result of changes in the inputs, assumptions, or model used to calculate the fair value of servicing assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(4)(i)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746

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Balance Type:	debit
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- Definition

The net Increase or Decrease in fair value as a result of other changes that are not additions, disposals, or a result of change in the inputs, assumptions, or model used to calculate the fair value of servicing assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(4)(ii)

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Balance Type:	debit
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- Definition

Other net Increase or Decrease in the balance in servicing assets subsequently measured at fair value. This element is for changes other than additions, disposals, changes in fair value resulting from changes in valuation inputs or changes in assumptions, or other changes in fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(5)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746

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- Definition

Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 2

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746

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Data Type:	num:percentItemType
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- Definition

Percentage of contractually collectible principal associated with a financial asset expected not to be collected due to default by the borrower.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 50

-Section 50

-Paragraph 2

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746

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- Definition

Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 2

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746

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