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OVERVIEW AND BASIS OF PRESENTATION (NARRATIVE) (DETAILS) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
UNUSUAL OR INFREQUENT ITEM [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment losses | $ 5,602 |  | $ 3,066 |  |  |  | $ 5,602 | $ 3,066 |  |  |  |  |
Tax Authorities Member |  |  |  |  |  |  |  |  |  |  |  |  |
UNUSUAL OR INFREQUENT ITEM [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Adjustments, Settlements, and Unusual Provisions |  |  |  |  | $ 1,100 |  |  |  | $ 301 | $ 358 | $ 137 | $ 123 | $ 180
Sofica [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
UNUSUAL OR INFREQUENT ITEM [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income before reclassifications - foreign currency translation adjustment |  |  |  | $ 3,200 | 1,500 |  |  |  |  | 1,700 |  |  |
Philippines pension liability [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
UNUSUAL OR INFREQUENT ITEM [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other, net of tax |  |  |  |  | 2,700 |  |  |  |  |  |  |  |
Government Authorities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
UNUSUAL OR INFREQUENT ITEM [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Adjustments, Settlements, and Unusual Provisions |  |  |  | $ 1,750 | $ 234 |  |  |  |  | $ 645 | $ 406 | $ 466 |
WebMetro |  |  |  |  |  |  |  |  |  |  |  |  |
UNUSUAL OR INFREQUENT ITEM [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment losses |  | $ 2,900 | $ 600 |  |  | $ 2,300 |  |  |  |  |  |  |

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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=66902209&loc=d3e3602-108585 + Details
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- Definition Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32022-110900 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 35 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6939497&loc=d3e30304-110892 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 + Details
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