Property and Equipment - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1,914	$ 2,226
Accumulated depreciation	(1,204)	(1,174)
Total property and equipment, net	710	1,052
Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,231	1,543
Office Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	326	326
Office Furniture and Fixtures [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	303	303
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 54	$ 54

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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