Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Restructuring - Schedule of Components of Restructuring Expense by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Restructuring Cost And Reserve [Line Items]
Total restructuring expenses	$ 8	$ 1,192	$ 309	$ 1,745	$ 6,229
United States [Member]
Restructuring Cost And Reserve [Line Items]
Total restructuring expenses	3	$ 1,192	212	1,743
International [Member]
Restructuring Cost And Reserve [Line Items]
Total restructuring expenses	$ 5		$ 97	$ 2