Annual report pursuant to Section 13 and 15(d)

Accrued Expenses - Summary (Details)

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Accrued Expenses - Summary (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Accrued expenses      
Accrued accounts payable $ 4,251   $ 943
Compensation expense 2,870   2,380
Research and development fees 1,048   1,945
Lease liabilities 733 $ 442 0
Audit and tax fees 522   378
Other current liabilities 458   945
Accrued license obligations 62   2,523
Total $ 9,944   $ 9,114