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Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2018
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Note 11 – Commitments and Contingencies CTB will be required to make certain customer reimbursements related to two deposit add-on products. As previously discussed in CTBI’s most recent Form 10-K, management established a related accrual in 2014, which was not considered material. The time period and amount of the reimbursements have not yet been determined; therefore, the actual amount may materially vary from the amount management has evaluated as most likely at March 31, 2018.