Segment, Customer Concentration and Geographical Information - Company Revenue in Different Geographic Locations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue from External Customer [Line Items]
Total revenues	$ 11,001	$ 11,699	$ 32,269	$ 37,108
Americas | Geographical components
Revenue from External Customer [Line Items]
Total revenues	10,787	11,247	31,380	35,654
EMEA | Geographical components
Revenue from External Customer [Line Items]
Total revenues	$ 214	$ 452	$ 889	$ 1,454