Income Tax - Summary Of Loss Before Provision For Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Loss Before Provision For Income Taxes	$ (31,033)	$ (112,398)	$ (18,741)
United States [Member]
Income Tax Contingency [Line Items]
Loss Before Provision For Income Taxes	(35,675)	(77,517)
International [Member]
Income Tax Contingency [Line Items]
Loss Before Provision For Income Taxes	$ 4,642	$ (34,881)