Revenue and Deferred Revenue - Summary of Revenue by Source (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenue	$ 22,916	$ 7,190
Consoles Product
Disaggregation Of Revenue [Line Items]
Revenue	14,766	5,027
Consumables Product
Disaggregation Of Revenue [Line Items]
Revenue	3,444	899
Product Revenue
Disaggregation Of Revenue [Line Items]
Revenue	18,210	5,926
Service and Other Revenue
Disaggregation Of Revenue [Line Items]
Revenue	$ 4,706	$ 1,264

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details