Summary of Revenues Disaggregated by Timing of Goods and Services Transferred (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
Revenue Recognized Over Time
Disaggregation Of Revenue [Line Items]
Net revenue	1,056	985	2,115	2,006
Revenue Recognized at a Point in Time
Disaggregation Of Revenue [Line Items]
Net revenue	$ 8,078	$ 1,953	$ 15,135	$ 5,715