Income Taxes - Schedule of Unrecognized Tax Benefits Roll Forward (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Beginning balance	$ 30,368	$ 31,036
Increases (decreases) due to foreign currency translations	2,265	(632)
Increases (decreases) as a result of positions taken during: Prior periods	(1,147)	(36)
Current period	372
Ending balance	$ 31,858	$ 30,368