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Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Accrued Expenses    
Employee compensation, benefits, and related accruals $ 1,287 $ 1,285
Research and development costs 178 250
Legal reserves and professional fees 815 216
Other accrued 34  
Total $ 2,314 $ 1,751