Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details)

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Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Payables And Accruals [Abstract]    
Payroll and related costs $ 2,457 $ 2,181
Professional and consulting fees 623 209
Research and development costs 72 538
Guarantee liability 456 548
Interest payable 126  
Other 238 56
Total accrued expenses and other current liabilities $ 3,972 $ 3,532