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Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Accrued Expenses    
Employee compensation, benefits, and related accruals $ 870 $ 1,285
Research and development costs 900 250
Legal reserves, professional fees, and other accruals 324 216
Total $ 2,094 $ 1,751