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Property and Equipment, Net - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Property Plant And Equipment [Line Items]      
Depreciation expense $ 71,000 $ 149,000  
Property and equipment, gross 3,466,000   $ 3,515,000
Gain on sale of property and equipment 19,000 328,000  
Proceeds from sale of property and equipment 30,000 $ 787,000  
Property and equipment classified as assets held for sale, fair value 87,000   87,000
Construction in Progress [Member]      
Property Plant And Equipment [Line Items]      
Property and equipment, gross $ 10,000   $ 10,000