RESTRUCTURING AND INTEGRATION CHARGES AND IMPAIRMENT LOSSES (LIABILITY CLASSIFICATION TABLE) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Reduction in force		$ 443
Facility exit charges	$ 402	95
Restructuring charges, net	402	538
TTEC Digital
Restructuring Cost and Reserve [Line Items]
Reduction in force		207
Facility exit charges	8
TTEC Engage
Restructuring Cost and Reserve [Line Items]
Reduction in force		236
Facility exit charges	$ 394	$ 95

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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