Quarterly report pursuant to Section 13 or 15(d)

Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details)

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Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Prepaid Expense And Other Assets Current [Abstract]    
Prepaid research and development expenses $ 1,826 $ 1,679
Short-term deposits 1,278 1,139
Deferred financing expenses 1,253 2,339
Research and development tax credit receivable 522 1,036
Prepaid insurance 459 569
Value added tax receivable 302 68
Other prepaid assets 126 57
Total $ 5,766 $ 6,887