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Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Prepaid Expense And Other Assets Current [Abstract] |  |
Research and development tax credit receivable | $ 295 | $ 840
Other prepaid assets | 262 | 56
Prepaid insurance | 250 | 624
Prepaid research and development expenses | 150 |
Interest receivable | 100 | 290
Short-term deposits | 36 | 37
Value added tax receivable | 18 | 75
Total | $ 1,111 | $ 1,922

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