Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses - Summary (Details)

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Accrued Expenses - Summary (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Accrued expenses    
Accrued accounts payable $ 1,275 $ 4,251
Compensation expense 2,656 2,870
Research and development fees 1,833 1,048
Lease liabilities 934 733
Audit and tax fees 126 522
Other current liabilities 664 520
Total $ 7,488 $ 9,944