XML 52 R41.htm IDEA: XBRL DOCUMENT v3.25.3

Loans, Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Interest Rate Reduction [Member] | Commercial Real Estate Nonresidential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification	7.50%		7.50%
Weighted-average contractual interest rate, post-modification	2.00%		2.10%
Interest Rate Reduction [Member] | Real Estate Mortgage [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification	7.20%	6.20%	7.50%	7.80%
Weighted-average contractual interest rate, post-modification	3.70%	3.30%	4.00%	4.70%
Interest Rate Reduction [Member] | Home Equity Lines [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification	8.90%		8.90%
Weighted-average contractual interest rate, post-modification	7.50%		7.50%
Term Extension [Member] | Commercial Real Estate Residential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased	3 months 18 days		10 months 24 days	3 months 18 days
Term Extension [Member] | Commercial Real Estate Nonresidential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased	20 years 2 months 12 days		1 year 4 months 24 days
Term Extension [Member] | Commercial Other [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased	3 months 18 days	3 months 18 days	3 years 9 months 18 days	3 months 18 days
Term Extension [Member] | Real Estate Mortgage [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased	4 months 24 days	1 year 4 months 24 days	4 months 24 days	9 months 18 days
Term Extension [Member] | Home Equity Lines [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased			2 years 10 months 24 days	6 months
Term Extension [Member] | Consumer Direct [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased		2 months 12 days	3 months 18 days	1 month 6 days
Term Extension [Member] | Consumer Indirect [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average term increased	1 year 1 month 6 days		1 year	3 months 18 days
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Real Estate Residential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate				8.50%
Weighted-average contractual interest rate, pre-modification			9.30%
Weighted-average contractual interest rate, post-modification			8.10%
Weighted-average term increased			15 years 10 months 24 days	4 years
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Real Estate Nonresidential [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification	6.50%		6.50%	6.00%
Weighted-average contractual interest rate, post-modification	4.50%		4.50%	8.50%
Weighted-average term increased	6 months		6 months	10 years 3 months 18 days
Combination - Term Extension and Interest Rate Reduction [Member] | Commercial Other [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification		4.00%	7.00%	4.30%
Weighted-average contractual interest rate, post-modification		8.50%	8.00%	8.50%
Weighted-average term increased		15 years	5 years 7 months 6 days	14 years 3 months 18 days
Combination - Term Extension and Interest Rate Reduction [Member] | Real Estate Mortgage [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate		8.50%
Weighted-average contractual interest rate, pre-modification	5.40%		5.30%	5.60%
Weighted-average contractual interest rate, post-modification	3.00%		3.60%	4.20%
Weighted-average term increased	6 years 6 months	20 years	5 years 6 months	4 years 3 months 18 days
Combination - Term Extension and Interest Rate Reduction [Member] | Home Equity Lines [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted-average contractual interest rate, pre-modification	8.70%	5.40%	8.30%	9.30%
Weighted-average contractual interest rate, post-modification	7.50%	3.00%	7.50%	8.60%
Weighted-average term increased	9 years	1 year 4 months 24 days	7 years 6 months	13 years 1 month 6 days

X

- References

No definition available.

+ Details

Name:	ctbi_FinancingReceivableFinancialEffectOfModificationsMadeToBorrowersExperiencingFinancialDifficultyAbstract
Namespace Prefix:	ctbi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average interest rate of modified financing receivable.

+ References

No definition available.

+ Details

Name:	ctbi_FinancingReceivableModificationsWeightedAverageContractualInterestRate
Namespace Prefix:	ctbi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted-average interest rate, after modification, of modified financing receivable.

+ References

No definition available.

+ Details

Name:	ctbi_FinancingReceivableModificationsWeightedAverageContractualInterestRatePostModification
Namespace Prefix:	ctbi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted-average interest rate, before modification, of modified financing receivable.

+ References

No definition available.

+ Details

Name:	ctbi_FinancingReceivableModificationsWeightedAverageContractualInterestRatePreModification
Namespace Prefix:	ctbi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

+ Details

Name:	us-gaap_FinancingReceivableModifiedWeightedAverageTermIncreaseFromModification
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ContractualInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ctbi_CommercialRealEstateNonresidentialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ctbi_CommercialRealEstateResidentialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ctbi_CommercialOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ctbi_ConsumerDirectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ctbi_ConsumerIndirectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityAndInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: