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.

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

GOODWILL AND IMPAIRMENT CHARGES (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Goodwill [Line Items]
Goodwill impairment charge	$ 0		$ 0	$ 191,788	$ 0
Goodwill	89,895			89,895		$ 282,006
IHT
Goodwill [Line Items]
Goodwill impairment charge		$ 191,800		191,788
Goodwill	$ 0			$ 0		$ 193,216