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GOODWILL (NARRATIVE) (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |
Goodwill | $ 203,518 | $ 206,694
Impairment losses | 1,120 |
Customer Management Services [Member] |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |
Goodwill | 115,523 | 119,497
Customer Strategy Services [Member] |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |
Goodwill | 21,544 | 21,919
Customer Growth Services [Member] |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |
Goodwill | 24,439 | 24,439
Customer Technology Services [Member] |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |
Goodwill | $ 42,012 | $ 40,839

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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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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