Revenue and Deferred Revenue - Summary of Revenue by Source (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation Of Revenue [Line Items]
Revenue	$ 25,057	$ 25,216	$ 55,607	$ 48,132
Consoles Product
Disaggregation Of Revenue [Line Items]
Revenue	13,228	16,857	31,279	31,623
Consumables Product
Disaggregation Of Revenue [Line Items]
Revenue	6,393	3,771	14,006	7,215
Product Revenue
Disaggregation Of Revenue [Line Items]
Revenue	19,621	20,628	45,285	38,838
Service and Other Revenue
Disaggregation Of Revenue [Line Items]
Revenue	$ 5,436	$ 4,588	$ 10,322	$ 9,294