Fair Value of Plan Assets - Statements of Net Assets Available for Benefits Measured at Fair Value (Details) - Community Trust Bancorp, Inc. Employee Stock Ownership Plan [Member] - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Fair Value of Plan Assets [Abstract]
Fair Value	$ 44,403,879	$ 41,253,491
CTBI Common Stock [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	43,323,070	40,323,800
Mutual Funds [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	1,045,347	900,499
Money Market Funds [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	35,462	29,192
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	44,403,879	41,253,491
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| CTBI Common Stock [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	43,323,070	40,323,800
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Mutual Funds [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	1,045,347	900,499
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Money Market Funds [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	35,462	29,192
Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	0	0
Significant Other Observable Inputs (Level 2) [Member] \| CTBI Common Stock [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Mutual Funds [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	0	0
Significant Other Observable Inputs (Level 2) [Member] \| Money Market Funds [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] \| CTBI Common Stock [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Mutual Funds [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Money Market Funds [Member]
Fair Value of Plan Assets [Abstract]
Fair Value	$ 0	$ 0

Fair value of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details