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Concentrations of Credit Risk
 12 Months Ended
Dec. 31, 2012
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 loan and lease losses are not exceeded. At December 31, 2012 and 2011, our concentrations of hotel/motel industry credits were 35% and 37% of Tier 1 Capital plus the allowance for loan and lease losses, respectively. Lessors of residential buildings and dwellings credits were 32% and 33%, respectively. Lessors of non-residential buildings were 30% and 29%, respectively. Agriculture credits were 17% at both December 31, 2012 and 2011. Coal mining and related support industries credits were 16% and 22%, respectively. These percentages are within our internally established limits regarding concentrations of credit.