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GOODWILL AND LONG-LIVED ASSETS - Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance			$ 325,017
Impairment loss	$ 0	$ 0	(109,486)	$ 0
Foreign currency translation			(3,813)
Goodwill, ending balance	211,718		211,718
North America
Goodwill [Roll Forward]
Goodwill, beginning balance			178,685
Impairment loss			0
Foreign currency translation			0
Goodwill, ending balance	178,685		178,685
International
Goodwill [Roll Forward]
Goodwill, beginning balance			146,332
Impairment loss			(109,486)
Foreign currency translation			(3,813)
Goodwill, ending balance	26,600		26,600
EMEA
Goodwill [Roll Forward]
Goodwill, ending balance	$ 33,033		$ 33,033

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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