Condensed Consolidated Statements of Operations and Other Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
License and collaboration revenue	$ 7,410	$ 24,208
Revenue, Product and Service [Extensible List]	us-gaap:LicenseMember	us-gaap:LicenseMember
Operating expenses:
Research and development	$ 84,818	$ 99,646
General and administrative	26,724	23,490
Total operating expenses	111,542	123,136
Loss from operations	(104,132)	(98,928)
Other income (expense):
Change in fair value of derivative liabilities	(2,900)	5,600
Change in fair value of non-controlling equity investments	(3,353)	(12,797)
Change in fair value of contingent consideration liabilities	(133)	(296)
Interest and other income (expense), net	11,849	9,961
Total other income (expense)	5,463	2,468
Net loss	(98,669)	(96,460)
Unrealized gain (loss) on marketable securities	(1,525)	1,665
Comprehensive loss	$ (100,194)	$ (94,795)
Net loss per common share, basic	$ (1.21)	$ (1.33)
Net loss per common share, diluted	$ (1.21)	$ (1.33)
Weighted - average common shares outstanding, basic	81,698,633	72,273,829
Weighted - average common shares outstanding, diluted	81,698,633	72,273,829