Summary of Net Revenue by Geographic Location (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Total net revenue	$ 9,531	$ 6,539	$ 26,780	$ 14,260
United States
Segment Reporting Information [Line Items]
Total net revenue	5,939	4,755	17,024	10,079
International
Segment Reporting Information [Line Items]
Total net revenue	$ 3,592	$ 1,784	$ 9,756	$ 4,181