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

SEGMENT AND GEOGRAPHIC DISCLOSURES - Additional Information (Detail) $ in Thousands		12 Months Ended
	Dec. 01, 2020 USD ($)	Dec. 31, 2020 USD ($) Segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| Segment		3
Goodwill impairment charge	$ 0	$ 191,788	$ 0	$ 0
IHT
Segment Reporting Information [Line Items]
Goodwill impairment charge		$ 191,788