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Stock-Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Stock-based Compensation [Abstract]        
Stock based compensation expense     $ 1,021 $ 1,152
Restricted Stock [Member]        
Stock-based Compensation [Abstract]        
Stock based compensation expense $ 293 $ 364 1,000 1,200
Dividend paid on stock based compensation 41 $ 45 121 $ 133
Unrecognized compensation expense related to restricted stock grants $ 2,600   $ 2,600  
Unrecognized compensation expense, weighted average period     2 years 7 months 6 days  
Granted (in shares) 0 0 15,000 52,865
Forfeited (in shares) 0 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