EQUITY-BASED COMPENSATION PLANS (NARRATIVE) (DETAILS) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Nov. 03, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense		$ 3,300	$ 3,200	$ 8,569	$ 9,031
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date	Nov. 01, 2015
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense		3,200	3,000	8,300	$ 8,600
Unrecognized Compensation Expense		$ 31,800		$ 31,800
Non-option Equity Awards Granted				744,800	583,333
Stock Options [Member] | Chief Executive Officer [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Exercise of stock options, share		800,000
Option Indexed to Issuer's Equity, Strike Price		$ 11.35
Share-based Compensation Arrangement by Share-based Payment Award, Description		To effectuate a "cashless exercise" of the option, on August 24, 2015, Mr. Tuchman entered into a Stock Purchase Agreement with TeleTech, under the terms of which he exercised the option at the end of business on August 31, 2015 and, upon issuance of the option shares, sold to TeleTech, in a simultaneous transaction, a number of shares necessary to pay the option exercise price plus any tax withholding obligations. The option shares were valued a the market price as of the close of business on that date.  Mr. Tuchman's option, granted under TeleTech's 1999 Stock Option and Incentive Plan, was fully vested and set to expire in November, 2015. The Stock Purchase Agreement was approved by the independent members of TeleTech's Board of Directors who deemed it to be in the best interest of the company and all its shareholders.
Cost of Services
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense		$ 900	500	$ 2,000	$ 1,700
Selling General And Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense		$ 2,400	$ 2,200	$ 6,600	$ 7,300