Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid external research and development expenses	$ 881	$ 2,438
Inventories	3,400	2,016
Other prepayments	1,817	6,128
VAT receivable	1,077	1,169
Construction deposit - current		7,909
Non-trade receivables	1,851	3,351
Rent deposits	960
Total prepaid expenses and other current assets	$ 9,986	$ 23,011