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Concentrations of Credit Risk	12 Months Ended
	Dec. 31, 2017
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, 2017 and 2016, our concentrations of hotel/motel industry credits were 47% and 41% of Tier 1 Capital plus the allowance for loan and lease losses, respectively.  Lessors of non-residential buildings credits were 45% and 45%, respectively.  Lessors of residential buildings and dwellings were 39% and 37%, respectively.  These percentages are within our internally established limits regarding concentrations of credit.

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- Definition

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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- References

No definition available.

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