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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Accrued Expenses and Other Current Liabilities    
Compensation and related benefits $ 1,092 $ 2,314
Interest 40 41
Professional fees 1,206 641
Research and development expenses   35
Other 337 511
Accrued Expenses, Total $ 2,675 $ 3,542