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Property and Equipment, Net - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2024
Mar. 31, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Property Plant And Equipment [Line Items]            
Depreciation expense $ 7,000   $ 89,000 $ 92,000 $ 227,000  
Property and equipment classified as assets held for sale, fair value           $ 51,000
Impairment of property and equipment   $ 36,000   $ 36,000 $ 0