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ACQUISITIONS AND DIVESTITURES 2 (NARRATIVE) (Details) - USD ($) $ in Thousands |  | 9 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2018 | Sep. 30, 2017
Business Acquisition [Line Items] |  |  |
Non-cash loss on assets held-for-sale |  | $ 2,000 | $ 3,178
Customer Growth Services [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Non-cash loss on assets held-for-sale | $ 2,600 |  |
Customer Strategy Services [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Non-cash loss on assets held-for-sale | $ 2,700 |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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