BUSINESS ACQUISITIONS - Schedule of Finite Lived Intangible Assets Acquired (Details) - ValuePenguin $ in Thousands	Jan. 10, 2019 USD ($)
Business Acquisition [Line Items]
Fair Value	$ 31,600
Weighted Average Amortization Life	3 years 1 month 6 days
Technology
Business Acquisition [Line Items]
Fair Value	$ 4,200
Weighted Average Amortization Life	3 years
Content
Business Acquisition [Line Items]
Fair Value	$ 26,100
Weighted Average Amortization Life	3 years
Trademarks and tradenames
Business Acquisition [Line Items]
Fair Value	$ 1,300
Weighted Average Amortization Life	5 years

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.

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

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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

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
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