XML 24 R36.htm IDEA: XBRL DOCUMENT
v3.20.1

Loans, Loan Portfolio Aging Analysis, Segregated by Class (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | $ 57,033,000 | $ 55,255,000 |
Current |  | 3,230,508,000 | 3,193,409,000 |
Total Loans |  | 3,287,541,000 | 3,248,664,000 |
90+ and Accruing |  | 18,044,000 | 19,620,000 | [1]
30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 13,734,000 | 10,689,000 |
60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 11,383,000 | 13,232,000 |
90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 31,916,000 | 31,334,000 |
Commercial [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 34,901,000 |  |
Current |  | 1,642,042,000 |  |
Total Loans |  | 1,676,943,000 | 1,664,948,000 |
90+ and Accruing |  | 12,376,000 |  |
Commercial [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 5,454,000 |  |
Commercial [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 6,668,000 |  |
Commercial [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 22,779,000 |  |
Commercial [Member] | Hotel/Motel [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 133,000 |  |
Current |  | 248,584,000 |  |
Total Loans |  | 248,717,000 |  |
90+ and Accruing |  | $ 133,000 |  |
Percentage of total loan |  | 7.50% |  |
Minimum threshold amount of loans requiring performance bond |  | $ 500,000 |  |
Commercial [Member] | Hotel/Motel [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 0 |  |
Commercial [Member] | Hotel/Motel [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 0 |  |
Commercial [Member] | Hotel/Motel [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 133,000 |  |
Commercial [Member] | Commercial Real Estate Residential [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 9,054,000 |  |
Current |  | 253,011,000 |  |
Total Loans |  | 262,065,000 |  |
90+ and Accruing |  | 4,636,000 |  |
Minimum threshold amount of loans requiring performance bond |  | 500,000 |  |
Commercial [Member] | Commercial Real Estate Residential [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 1,514,000 |  |
Commercial [Member] | Commercial Real Estate Residential [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 1,412,000 |  |
Commercial [Member] | Commercial Real Estate Residential [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 6,128,000 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 16,751,000 |  |
Current |  | 754,936,000 |  |
Total Loans |  | 771,687,000 |  |
90+ and Accruing |  | 7,128,000 |  |
Minimum threshold amount of loans requiring performance bond |  | 500,000 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 2,257,000 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 4,570,000 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 9,924,000 |  |
Commercial [Member] | Dealer Floorplans [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 0 |  |
Current |  | 80,828,000 |  |
Total Loans |  | 80,828,000 |  |
90+ and Accruing |  | 0 |  |
Commercial [Member] | Dealer Floorplans [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 0 |  |
Commercial [Member] | Dealer Floorplans [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 0 |  |
Commercial [Member] | Dealer Floorplans [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 0 |  |
Commercial [Member] | Commercial Other [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 8,963,000 | 7,431,000 |
Current |  | 304,683,000 | 382,252,000 |
Total Loans |  | 313,646,000 | 389,683,000 |
90+ and Accruing |  | 479,000 | 2,586,000 | [1]
Commercial [Member] | Commercial Other [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 1,683,000 | 880,000 |
Commercial [Member] | Commercial Other [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 686,000 | 284,000 |
Commercial [Member] | Commercial Other [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 6,594,000 | 6,267,000 |
Commercial [Member] | Construction [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 585,000 |
Current |  |  | 104,224,000 |
Total Loans |  |  | 104,809,000 |
90+ and Accruing | [1] |  | 237,000 |
Commercial [Member] | Construction [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 118,000 |
Commercial [Member] | Construction [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 0 |
Commercial [Member] | Construction [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 467,000 |
Commercial [Member] | Real Estate Mortgage [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 21,069,000 |
Current |  |  | 1,148,906,000 |
Total Loans |  |  | 1,169,975,000 |
90+ and Accruing | [1] |  | 8,820,000 |
Commercial [Member] | Real Estate Mortgage [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 2,734,000 |
Commercial [Member] | Real Estate Mortgage [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 5,969,000 |
Commercial [Member] | Real Estate Mortgage [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 12,366,000 |
Commercial [Member] | Equipment Lease Financing [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 0 |
Current |  |  | 481,000 |
Total Loans |  |  | 481,000 |
90+ and Accruing | [1] |  | 0 |
Commercial [Member] | Equipment Lease Financing [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 0 |
Commercial [Member] | Equipment Lease Financing [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 0 |
Commercial [Member] | Equipment Lease Financing [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 0 |
Residential [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 15,336,000 |  |
Current |  | 895,392,000 |  |
Total Loans |  | 910,728,000 |  |
90+ and Accruing |  | 5,165,000 |  |
Residential [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 3,392,000 |  |
Residential [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 3,310,000 |  |
Residential [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 8,634,000 |  |
Residential [Member] | Construction [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 803,000 |
Current |  |  | 62,547,000 |
Total Loans |  |  | 63,350,000 |
90+ and Accruing | [1] |  | 0 |
Residential [Member] | Construction [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 117,000 |
Residential [Member] | Construction [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 52,000 |
Residential [Member] | Construction [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  |  | 634,000 |
Residential [Member] | Real Estate Mortgage [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 13,616,000 | 16,470,000 |
Current |  | 785,275,000 | 716,533,000 |
Total Loans |  | 798,891,000 | 733,003,000 |
90+ and Accruing |  | 4,730,000 | 7,088,000 | [1]
Residential [Member] | Real Estate Mortgage [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 2,561,000 | 774,000 |
Residential [Member] | Real Estate Mortgage [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 3,154,000 | 5,376,000 |
Residential [Member] | Real Estate Mortgage [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 7,901,000 | 10,320,000 |
Residential [Member] | Home Equity Lines [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 1,720,000 | 2,232,000 |
Current |  | 110,117,000 | 109,662,000 |
Total Loans |  | 111,837,000 | 111,894,000 |
90+ and Accruing |  | 435,000 | 344,000 | [1]
Residential [Member] | Home Equity Lines [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 831,000 | 1,084,000 |
Residential [Member] | Home Equity Lines [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 156,000 | 412,000 |
Residential [Member] | Home Equity Lines [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 733,000 | 736,000 |
Consumer [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 6,796,000 |  |
Current |  | 693,074,000 |  |
Total Loans |  | 699,870,000 |  |
90+ and Accruing |  | 503,000 |  |
Consumer [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 4,888,000 |  |
Consumer [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 1,405,000 |  |
Consumer [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 503,000 |  |
Consumer [Member] | Consumer Direct [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 1,362,000 | 1,272,000 |
Current |  | 144,041,000 | 146,779,000 |
Total Loans |  | 145,403,000 | 148,051,000 |
90+ and Accruing |  | 38,000 | 97,000 | [1]
Consumer [Member] | Consumer Direct [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 735,000 | 945,000 |
Consumer [Member] | Consumer Direct [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 589,000 | 230,000 |
Consumer [Member] | Consumer Direct [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 38,000 | 97,000 |
Consumer [Member] | Consumer Indirect [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 5,434,000 | 5,393,000 |
Current |  | 549,033,000 | 522,025,000 |
Total Loans |  | 554,467,000 | 527,418,000 |
90+ and Accruing |  | 465,000 | 448,000 | [1]
Consumer [Member] | Consumer Indirect [Member] | 30-59 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 4,153,000 | 4,037,000 |
Consumer [Member] | Consumer Indirect [Member] | 60-89 Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | 816,000 | 909,000 |
Consumer [Member] | Consumer Indirect [Member] | 90+ Days Past Due [Member] |  |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |  |
Total Past Due |  | $ 465,000 | $ 447,000 |
[1] | 90+ and Accruing are also included in 90+ Days Past Due column.

X
- Definition Minimum threshold amount of loans requiring a performance bond to be posted by the general contractor to assure completion of the project. + References No definition available. + Details
Name: | ctbi_MinimumThresholdAmountOfLoansRequiringPerformanceBond
Namespace Prefix: | ctbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of the total loan portfolio. + References No definition available. + Details
Name: | ctbi_PercentageOfLoan
Namespace Prefix: | ctbi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922355-210448 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentAgingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable not past due. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922355-210448 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable past due. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922355-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ctbi_HotelMotelMember
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_CommercialRealEstateNonresidentialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ctbi_DealerFloorplansMember
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=us-gaap_ConstructionLoansMember
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=ctbi_EquipmentLeaseFinancingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
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_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
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: |