Cash and Due from Banks and Interest Bearing Deposits	12 Months Ended
Cash and Due from Banks and Interest Bearing Deposits	Dec. 31, 2015
Cash and Due from Banks and Interest Bearing Deposits [Abstract]
Cash and Due from Banks and Interest Bearing Deposits	2. Cash and Due from Banks and Interest Bearing Deposits Included in cash and due from banks and interest bearing deposits are amounts required to be held at the Federal Reserve or maintained in vault cash in accordance with regulatory reserve requirements. The balance requirements were $69.4 million and $64.5 million at December 31, 2015 and 2014, respectively. At December 31, 2015, CTBI had cash accounts which exceeded federally insured limits, and therefore are not subject to FDIC insurance, with $130.6 million in deposits with the Federal Reserve, $22.4 million in deposits with Fifth Third Bank, and $4.2 million in deposits with the Federal Home Loan Bank.

The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify.