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ACQUISITIONS (Details) - Technology-Based Intangible Assets | Oct. 29, 2018 | Apr. 12, 2018 | Jan. 05, 2017
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LeChat |  |  |
Business Acquisition [Line Items] |  |  |
Acquired finite-lived intangible assets, weighted average useful life |  |  | 2 years
Finite-lived intangible assets, remaining amortization period |  |  | 2 years
MarianaIQ |  |  |
Business Acquisition [Line Items] |  |  |
Acquired finite-lived intangible assets, weighted average useful life |  | 2 years |
Finite-lived intangible assets, remaining amortization period |  | 2 years |
Jitsi |  |  |
Business Acquisition [Line Items] |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 2 years |  |
Finite-lived intangible assets, remaining amortization period | 2 years |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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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- Definition Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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