Segment, Customer Concentration and Geographical Information - Company Revenue in Different Geographic Locations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue from External Customer [Line Items]
Total revenues	$ 12,674	$ 15,919	$ 25,409	$ 27,300
Americas | Geographical components
Revenue from External Customer [Line Items]
Total revenues	12,222	15,351	24,407	25,496
EMEA | Geographical components
Revenue from External Customer [Line Items]
Total revenues	$ 452	$ 568	$ 1,002	$ 1,804