Balance Sheet Components - Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 20,390	$ 19,537
Less accumulated depreciation and amortization	(16,126)	(14,301)
Property and equipment, net	4,264	5,236
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,546	1,335
Capitalized software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,940	1,322
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,600	8,737
Leasehold improvements and others
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 8,304	$ 8,143

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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