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FAIR VALUE (NARRATIVE) (DETAILS) (USD $)
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
FAIR VALUE [Abstract]      
Contingent Consideration, at fair value   $ 23,953,000us-gaap_BusinessCombinationContingentConsiderationLiability $ 24,744,000us-gaap_BusinessCombinationContingentConsiderationLiability
Contingent Consideration Cash Payment $ 8,100,000ttec_ContingentConsiderationCashPayment