Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue:
License and other revenue	$ 365	$ 844	$ 784	$ 1,796
Revenue from Contract with Customer, Product and Service [Extensible List]	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember
Total revenue	$ 365	$ 844	$ 784	$ 1,796
Operating expenses:
Research and development expenses	60,511	45,147	112,178	75,769
In-process research and development expenses		123,000		123,000
Loss on initial consolidation of variable interest entity		11,855		11,855
Change in fair value of contingent consideration liabilities	200		(4,395)
General and administrative expenses	17,465	14,422	33,533	27,156
Total operating expenses	78,176	194,424	141,316	237,780
Loss from operations	(77,811)	(193,580)	(140,532)	(235,984)
Other income:
Interest income	1,005	180	1,701	406
Other income (expense)	18	1	(3)	(4)
Total other income, net	1,023	181	1,698	402
Net loss	$ (76,788)	$ (193,399)	$ (138,834)	$ (235,582)
Net loss per share, basic and diluted	$ (0.71)	$ (2.10)	$ (1.28)	$ (2.58)
Weighted average shares of common stock, basic and diluted	108,644,329	91,939,439	108,469,760	91,188,160
Other comprehensive loss:
Unrealized holding loss	$ (2,688)	$ (76)	$ (10,818)	$ (128)
Total other comprehensive loss	(2,688)	(76)	(10,818)	(128)
Total comprehensive loss	$ (79,476)	$ (193,475)	$ (149,652)	$ (235,710)