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
Mar. 31, 2020
Dec. 31, 2019
Prepaid Expense And Other Assets Current [Abstract]    
Prepaid research and development expenses $ 2,260 $ 1,679
Short-term deposits 1,211 1,139
Research and development tax credit receivable 1,027 1,036
Deferred financing expenses 312 2,339
Prepaid insurance 237 569
Other prepaid assets 206 50
Value added tax receivable 66 68
Interest receivable 13 7
Total $ 5,332 $ 6,887