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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Prepaid Expenses and Other Current Assets [Abstract]    
Research and development tax credit receivable $ 1,343 $ 2,933
Prepayments and VAT receivable 329 792
Other current assets 365 341
Prepaid expenses and other current assets $ 2,037 $ 4,066