Segment and Geographic Information - Summary of Revenues By Geography (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 66,775	$ 65,275	$ 145,639	$ 125,579
Domestic
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	42,191	43,785	94,646	84,862
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 24,584	$ 21,490	$ 50,993	$ 40,717