Research and Development Tax Credit Receivable - Summary of Amounts Recognized to Offset Research and Development Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Tax Credit Carryforward [Line Items]
Foreign currency translation			$ 3,000	$ (47,100)
United Kingdom \| Research and Development Expense
Tax Credit Carryforward [Line Items]
Balance at beginning of period	$ 10,626	$ 15,176	5,942	30,723
Recognition of credit claims as offset to research and development expense	1,393	1,974	5,764	7,075
Receipt of credit claims				(18,390)
Foreign currency translation	(413)	(1,363)	(100)	(3,621)
Balance at end of period	$ 11,606	$ 15,787	$ 11,606	$ 15,787

Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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