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Summary of Significant Accounting Policies - Summary of Product Revenue by Geographical Locations of Customers (Detail) - Product - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation Of Revenue [Line Items]
Total product revenue	$ 23,379	$ 18,611
Europe, Middle East and Africa
Disaggregation Of Revenue [Line Items]
Total product revenue	13,277	12,220
North America
Disaggregation Of Revenue [Line Items]
Total product revenue	9,664	6,077
Other
Disaggregation Of Revenue [Line Items]
Total product revenue	$ 438	$ 314

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