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Concentrations of Credit Risk	12 Months Ended
Concentrations of Credit Risk	Dec. 31, 2020
Concentrations of Credit Risk [Abstract]
Concentrations of Credit Risk	18. Concentrations of Credit Risk CTBI’s banking activities include granting commercial, residential, and consumer loans to customers primarily located in eastern, northeastern, central, and south central Kentucky, southern West Virginia, and northeastern Tennessee. CTBI is continuing to manage all components of its portfolio mix in a manner to reduce risk from changes in economic conditions. Concentrations of credit, as defined for regulatory purposes, are reviewed quarterly by management to ensure that internally established limits based on Tier 1 Capital plus the allowance for credit losses are not exceeded. At December 31, 2020 and 2019, our concentrations of hotel/motel industry credits were 44% and 43% of Tier 1 Capital plus the allowance for credit losses, respectively. Lessors of residential buildings and dwellings were 37% and 41%, respectively. Lessors of non-residential buildings credits were 39% and 38%, respectively. These percentages are within our internally established limits regarding concentrations of credit.