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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Accrued Expenses and Other Current Liabilities    
Compensation and related benefits $ 3,033 $ 2,314
Interest 40 41
Third-party and professional fees 772 641
Research and development expenses 13 35
Other 511 511
Accrued Expenses, Total $ 4,369 $ 3,542