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Stock-Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Stock-based Compensation [Abstract] |  |  |  |
Stock based compensation expense |  |  | $ 687 | $ 788
Restricted Stock [Member] |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |
Stock based compensation expense | $ 344 | $ 411 | 687 | 788
Dividend paid on stock based compensation | 40 | $ 44 | 80 | $ 88
Unrecognized compensation expense related to restricted stock grants | $ 2,900 |  | $ 2,900 |
Unrecognized compensation expense, weighted average period |  |  | 2 years 9 months 18 days |
Granted (in shares) | 0 | 0 | 15,000 | 52,865
Forfeited (in shares) | 328 | 0 | 2,437 | 790
Stock Options [Member] |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |
Stock based compensation expense |  |  | $ 0 | $ 0
Unrecognized compensation expense related to unvested stock option awards | $ 0 |  | $ 0 |
Options granted to purchase shares of CTBI common stock (in shares) |  |  | 0 | 0
Stock Ownership Incentive 2015 Plan [Member] | Restricted Stock [Member] |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |
Award vesting period |  |  | 4 years |
Stock Ownership Incentive 2015 Plan [Member] | Restricted Stock [Member] | Maximum [Member] |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |
Period of certain participant employee termination events following change in control for restriction on restricted stock granted to lapse |  |  | 24 months |

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- Definition Refers to the period of certain participant employee termination events following a change in control of the entity for the restriction on restricted stock granted to lapse, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of paid and unpaid stock dividends declared for award under share-based payment arrangement. + References No definition available. + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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