Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue:
Collaboration revenue - related party	$ 126,473	$ 1,216	$ 125,951	$ 2,709
Type of Revenue [Extensible List]	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember
Total revenue	$ 126,473	$ 1,216	$ 125,951	$ 2,709
Operating expenses:
Research and development expenses	46,792	43,935	90,761	83,584
General and administrative expenses	28,051	20,335	50,521	38,906
Collaboration (profit) loss sharing - related party	2,106	271	5,713	(705)
Total operating expenses	76,949	64,541	146,995	121,785
Income (loss) from operations	49,524	(63,325)	(21,044)	(119,076)
Other income (expense):
Interest income	1,726	395	2,758	779
Interest expense	(3,187)	(1,501)	(5,135)	(2,413)
Other expense	(1,511)	(304)	(1,201)	(649)
Total other expense, net	(2,972)	(1,410)	(3,578)	(2,283)
Net income (loss)	$ 46,552	$ (64,735)	$ (24,622)	$ (121,359)
Net income (loss) per share attributable to common stockholders, basic	$ 0.36	$ (0.7)	$ (0.19)	$ (1.32)
Net income (loss) per share attributable to common stockholders, diluted	$ 0.36	$ (0.7)	$ (0.19)	$ (1.32)
Weighted average common shares outstanding, basic	127,713,486	92,255,416	126,793,342	92,224,382
Weighted average common shares outstanding, diluted	129,844,931	92,255,416	126,793,342	92,224,382
Other comprehensive (loss) income:
Unrealized (loss) gain on investments, net of tax of $0	$ (2)	$ (41)	$ 10	$ (196)
Currency translation adjustment	(1)	0	1	0
Total other comprehensive (loss) income	(3)	(41)	11	(196)
Comprehensive income (loss)	$ 46,549	$ (64,776)	$ (24,611)	$ (121,555)