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Concentrations of Credit Risk
 12 Months Ended
Dec. 31, 2011
Concentrations of Credit Risk [Abstract]  
Concentrations of Credit Risk
19.  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, 2011 and 2010, our concentrations of hotel/motel industry credits were 37% and 39% of Tier 1 Capital plus the allowance for loan and lease losses, respectively.  Lessors of residential buildings and dwellings credits were 33% and 32%, respectively.  Lessors of non-residential buildings were 29% and 32%, respectively.    Coal mining and related support industries credits were 22% and 28%, respectively. These percentages are within our internally established limits regarding concentrations of credit.