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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Prepaid Expense and Other Assets, Current [Abstract]    
Research and development tax credit receivable $ 2,000 $ 3,727
Prepayments and VAT receivable 921 577
Other current assets 79 79
Prepaid expenses and other current assets $ 3,000 $ 4,383