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Property and Equipment, Net - Summary of Property and Equipment, Net (Detail) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 2,893 $ 3,491
Less accumulated depreciation and amortization (2,509) (2,811)
Property and equipment, net 384 680
Laboratory equipment [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 273 679
Software and computer equipment [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 349 383
Machinery and equipment [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 440 450
Furniture and fixtures [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 39 83
Vehicles [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 202 306
Leasehold improvements [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 1,590 $ 1,590