Condensed Consolidated Statements of Operations - Unaudited - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating expenses
Research and development	$ 27,233	$ 25,617
General and administrative	12,843	15,259
Total operating expenses	40,076	40,876
Operating loss	(40,076)	(40,876)
Interest income	4,843	5,297
Interest expense	(2)	(3)
Net loss before income taxes	(35,235)	(35,582)
Income tax expense	98	1,327
Net loss before noncontrolling interest	(35,333)	(36,909)
Net loss attributable to noncontrolling interest	(25,841)	(27,244)
Net loss available to Class A ordinary shareholders	(9,492)	(9,665)
Common Class A [Member]
Operating expenses
Net loss available to Class A ordinary shareholders	$ (9,492)	$ (9,665)
Weighted Average Number of Shares Outstanding, Basic	60,951,721	61,540,231
Weighted Average Number Of Shares Outstanding, Diluted	60,951,721	61,540,231
Net loss per share attributable to Class A ordinary shares, Basic	$ (0.16)	$ (0.16)
Net loss per share attributable to Class A ordinary shares, Diluted	$ (0.16)	$ (0.16)