GOODWILL AND LONG-LIVED ASSETS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	$ 0	$ 109,486
Impairment of long-lived assets	0	22,351
Intangible asset amortization expense	$ 2,292	2,524
International
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment		109,500
Impairment of long-lived assets		$ 22,400
Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	10 years

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration