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Segment Reporting - Summary of Group's Assets and Revenues by Location (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Segment Reporting Information [Line Items]
Non-current assets	$ 12,271		$ 12,784
Research collaboration	422	$ 142
Revenue	422	142
UK
Segment Reporting Information [Line Items]
Non-current assets	562		600
Research collaboration	422	142
Revenue	422	$ 142
Germany
Segment Reporting Information [Line Items]
Non-current assets	$ 11,709		$ 12,184

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