Segment Information And Information About Geographic Areas - Schedule of Revenues by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 186,823	$ 157,789
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer By Geographic Area	184,839	155,986
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer By Geographic Area	$ 1,984	$ 1,803