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Fixed Assets - Schedule of Fixed Assets, Net (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Fixed assets, gross $ 1,745 $ 1,645
Less: Accumulated depreciation (678) (596)
Fixed assets, net 1,067 1,049
Computer Equipment [Member]    
Fixed assets, gross $ 66 66
Fixed assets, useful life 5 years  
Lab Equipment [Member]    
Fixed assets, gross $ 1,192 1,092
Fixed assets, useful life 5 years  
Furniture and Fixtures [Member]    
Fixed assets, gross $ 456 456
Fixed assets, useful life 7 years  
Leasehold Improvements [Member]    
Fixed assets, gross $ 31 $ 31
Fixed assets, useful life lease term