Information Regarding Net Revenue by Geographic Region (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Net revenue	$ 22,162	$ 18,120
Geographic Concentration Risk | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Percentage of net revenue	100.00%	100.00%
Americas
Segment Reporting Information [Line Items]
Net revenue	$ 15,148	$ 13,868
Americas | Geographic Concentration Risk | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Percentage of net revenue	68.00%	77.00%
Europe and the Middle East
Segment Reporting Information [Line Items]
Net revenue	$ 2,460	$ 2,601
Europe and the Middle East | Geographic Concentration Risk | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Percentage of net revenue	11.00%	14.00%
Asia-Pacific
Segment Reporting Information [Line Items]
Net revenue	$ 4,554	$ 1,651
Asia-Pacific | Geographic Concentration Risk | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Percentage of net revenue	21.00%	9.00%