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, 2021
Dec. 31, 2020
Prepaid Expense And Other Assets Current [Abstract]    
Refundable FDA filing fee   $ 2,876
Short-term deposits $ 2,288 2,360
Prepaid insurance 1,344 415
Research and development tax credit receivable 677 801
Interest receivable 261  
Other prepaid assets 196 231
Prepaid research and development expenses 69 157
Value added tax receivable 56 64
Deferred financing expenses 37  
Total $ 4,928 $ 6,904