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INVESTMENTS - Schedule of Gains and Losses due to Changes in Fair Value of Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Total gains (losses) included in earnings	$ (1,405)	$ (72,497)	$ (9,064)
Monster LP
Schedule of Equity Method Investments [Line Items]
Total gains (losses) included in earnings	0	(69,408)	(9,509)
Nearbuy
Schedule of Equity Method Investments [Line Items]
Total gains (losses) included in earnings	$ (1,405)	$ (3,089)	$ 445

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- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612

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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.

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