Summary of Sales by End Market (Detail) - 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]
Net revenue	$ 9,134	$ 2,938	$ 17,250	$ 7,721
End-customer
Disaggregation Of Revenue [Line Items]
Net revenue	5,865	2,402	11,086	5,741
Distributors
Disaggregation Of Revenue [Line Items]
Net revenue	$ 3,269	$ 536	$ 6,164	$ 1,980