Income Taxes - Schedule of Provision for Income Taxes on Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
U.S.
Current	$ (15,054)	$ (1,911)	$ 9,480
Deferred	(29)	2,008	(3,430)
Total U.S	(15,083)	97	6,050
Non-U.S.
Current	1,382	1,931	2,255
Deferred	10,816	(615)	769
Total Non U.S	12,198	1,316	3,024
Income tax expense (benefit)	$ (2,885)	$ 1,413	$ 9,074