Other Financial Statement Information - Schedule of Revenue by geography (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 298,845	$ 245,893	$ 146,313
North America
Disaggregation of Revenue [Line Items]
Revenue	159,332	139,758	85,132
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue	73,265	58,004	35,812
China
Disaggregation of Revenue [Line Items]
Revenue	41,741	29,920	15,075
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	$ 24,507	$ 18,211	$ 10,294