XML 90 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Jun. 30, 2019
Cover [Abstract]    
Entity Registrant Name COMMUNITY TRUST BANCORP INC /KY/  
Entity Central Index Key 0000350852  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer Yes  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Public Float   $ 714.7
Entity Common Stock, Shares Outstanding 17,819,938  
Document Type 10-K  
Amendment Flag false  
Document Period End Date Dec. 31, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus FY  
Document Annual Report true  
Document Transition Report false  
Entity File Number 001-31220  
Entity Tax Identification Number 61-0979818  
Entity Incorporation, State or Country Code KY  
Entity Address, Address Line One 346 North Mayo Trail  
Entity Address, Address Line Two P.O. Box 2947  
Entity Address, City or Town Pikeville  
Entity Address, State or Province KY  
Entity Address, Postal Zip Code 41502  
City Area Code 606  
Local Phone Number 432-1414  
Title of 12(b) Security Common Stock  
Trading Symbol CTBI  
Security Exchange Name NASDAQ