Consolidated Financial Statements Details - Summary of Property Equipment and Improvements, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Property and equipment	$ 1,899	$ 2,365
Leasehold improvements	78	2,899
Property, equipment and improvements, gross	1,977	5,264
Less: accumulated depreciation	(1,498)	(2,910)
Property, equipment and improvements, net	$ 479	$ 2,354

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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- Definition

Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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Property and Equipment, Gross

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