Income Taxes - Schedule of Domestic and Foreign Components of Pretax Income (Loss) from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
United States	$ (35,696)	$ (107,455)	$ (59,264)
Foreign	68,055	73,002	66,539
Income (loss) before income taxes	$ 32,359	$ (34,453)	$ 7,275