Summary of Significant Accounting Policies - Summary of Product Revenue by Geographical Locations of Customers (Detail) - Product - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Total product revenue	$ 31,484	$ 21,503	$ 54,863	$ 40,114
Europe, Middle East and Africa
Disaggregation Of Revenue [Line Items]
Total product revenue	16,231	14,462	29,508	26,682
North America
Disaggregation Of Revenue [Line Items]
Total product revenue	14,647	6,400	24,311	12,477
Other
Disaggregation Of Revenue [Line Items]
Total product revenue	$ 606	$ 641	$ 1,044	$ 955