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GOODWILL (NARRATIVE) (DETAILS) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 01, 2014
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Measurements, Significant Assumptions |  |  |  |  |  |  |  |  | The process of evaluating the fair value of the reporting units is highly subjective and requires significant judgment and estimates as the reporting units operate in a number of markets and geographical regions. We used an income approach to determine our best estimates of fair value which incorporated the following significant assumptions:Revenue projections, including revenue growth during the forecast periods ranging from 3% to 20%;EBITDA margin projections held relatively flat over the forecast periods ranging from 10% to 20%;Estimated income tax rates of 10% to 40%;Estimated capital expenditures ranging from $0.1 million to $30 million; andDiscount rates ranging from 11.6% to 15.8% based on various inputs, including the risks associated with the specific reporting units, the country of operations as well as their revenue growth and EBITDA margin assumptions. |  |  |
Impairment losses | $ 5,034 | $ 3,066 | $ 0 | $ 0 | $ 373 | $ 0 | $ 0 | $ 0 | $ 8,100 | $ 373 | $ 1,205 |
Revana [Member] |  |  |  |  |  |  |  |  |  |  |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Fair value of a reporting unit in excess of carrying value expressed as a percentage |  | 23.00% |  |  |  |  |  |  |  |  |  | 6.00%
WebMetro [Member] |  |  |  |  |  |  |  |  |  |  |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Fair value of a reporting unit in excess of carrying value expressed as a percentage |  |  |  |  |  |  |  |  |  |  |  | 11.00%
Discount rate |  |  |  |  |  |  |  |  | 17.00% |  |  |
Impairment losses | 600 | $ 3,100 |  |  | $ 2,300 |  |  |  |  |  |  |
WebMetro [Member] | 2016 - 2019 |  |  |  |  |  |  |  |  |  |  |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Growth rate |  |  |  |  |  |  |  |  | 20.00% |  |  |
WebMetro [Member] | After 2019 |  |  |  |  |  |  |  |  |  |  |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Growth rate |  |  |  |  |  |  |  |  | 4.00% |  |  |
Latin America [Member] |  |  |  |  |  |  |  |  |  |  |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  | 15.80% |  |  |
Impairment losses | $ 1,800 |  |  |  |  |  |  |  |  |  |  |
Latin America [Member] | 2016 |  |  |  |  |  |  |  |  |  |  |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Growth rate |  |  |  |  |  |  |  |  | 22.00% |  |  |
Latin America [Member] | 2017 - 2020 |  |  |  |  |  |  |  |  |  |  |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Growth rate |  |  |  |  |  |  |  |  | 6.00% |  |  |
Latin America [Member] | After 2020 |  |  |  |  |  |  |  |  |  |  |  |
ValuationAllowanceForImpairmentOfRecognizedServicingAssetsLineItems |  |  |  |  |  |  |  |  |  |  |  |
Growth rate |  |  |  |  |  |  |  |  | 4.00% |  |  |

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