ORGANIZATION - Narrative (Details)	6 Months Ended	12 Months Ended
Dec. 31, 2020 $ / shares	Dec. 31, 2020 languange segment $ / shares shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of languages where products are available (more than) \| languange		40
Number of operating segments \| segment		1
Class of Stock [Line Items]
Cash received per share in transaction (USD per share)	$ 3.00	$ 3.00
New Match Common Stock
Class of Stock [Line Items]
Stock issued in transaction per parent company share (shares) \| shares		1
Cash received per share in transaction (USD per share)		$ 3.00

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration