Information Regarding Net Revenue by Geographic Region (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]
Net revenue	$ 29,097	$ 24,859	$ 75,252	$ 62,084
Geographic Concentration Risk | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Percentage of net revenue	100.00%	100.00%	100.00%	100.00%
Americas
Segment Reporting Information [Line Items]
Net revenue	$ 19,667	$ 15,050	$ 49,023	$ 42,588
Americas | Geographic Concentration Risk | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Percentage of net revenue	68.00%	61.00%	65.00%	69.00%
Europe and the Middle East
Segment Reporting Information [Line Items]
Net revenue	$ 3,223	$ 2,082	$ 9,309	$ 7,312
Europe and the Middle East | Geographic Concentration Risk | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Percentage of net revenue	11.00%	8.00%	12.00%	12.00%
Asia-Pacific
Segment Reporting Information [Line Items]
Net revenue	$ 6,207	$ 7,727	$ 16,920	$ 12,184
Asia-Pacific | Geographic Concentration Risk | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Percentage of net revenue	21.00%	31.00%	23.00%	19.00%