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Property and Equipment - Summary of Property and Equipment (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Property Plant And Equipment [Line Items]    
Property and Equipment, Gross $ 231 $ 243
Accumulated depreciation and amortization (201) (195)
Property and equipment, net $ 30 48
Computer Equipment    
Property Plant And Equipment [Line Items]    
Estimated Life 3 years  
Property and Equipment, Gross $ 41 50
Lab Equipment    
Property Plant And Equipment [Line Items]    
Estimated Life 5 years  
Property and Equipment, Gross $ 130 133
Furniture and Fixtures    
Property Plant And Equipment [Line Items]    
Estimated Life 5 years  
Property and Equipment, Gross $ 44 44
Computer Software    
Property Plant And Equipment [Line Items]    
Estimated Life 3 years  
Property and Equipment, Gross $ 16 $ 16