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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Accrued Expenses and Other Current Liabilities    
Employee compensation and benefits $ 2,842 $ 4,243
External research and development costs 585 817
Legal and professional fees 2,379 714
Interest on long-term debt   195
Other 29 52
Total accrued expenses and other current liabilities $ 5,835 $ 6,021