Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenues	$ 825	$ 10	$ 1,023	$ 22
Cost of revenues	760	8	924	19
Gross margin	65	2	99	3
Operating costs and expenses:
Selling, general and administrative	42,267	17,521	79,902	39,513
Research and development	45,982	71,160	129,994	172,620
Total operating costs and expenses	88,249	88,681	209,896	212,133
Loss from operations	(88,184)	(88,679)	(209,797)	(212,130)
Other income (expense):
Other income (expense), net	(260)	(452)	(305)	(823)
Interest income	6,581	1,353	13,475	1,618
Interest expense	(4,605)	(4,751)	(9,206)	(9,134)
Foreign currency gain (loss)	3,800	(3,417)	3,399	(2,671)
Unrealized gain (loss) recognized on equity securities	340	(10,030)	(390)	(4,910)
Total other income (expense)	5,856	(17,297)	6,973	(15,920)
Loss before income taxes	(82,328)	(105,976)	(202,824)	(228,050)
Provision for income taxes	(279)	0	(338)	0
Net loss	$ (82,607)	$ (105,976)	$ (203,162)	$ (228,050)
Net loss per common share
Net loss per share attributable to Class A and Class B Common stock- Basic (in dollars per share)	$ (0.25)	$ (0.36)	$ (0.62)	$ (0.77)
Net loss per share attributable to Class A and Class B Common stock - Diluted (in dollars per share)	$ (0.25)	$ (0.36)	$ (0.62)	$ (0.77)
Weighted average shares outstanding
Weighted average Class A and Class B Common shares outstanding- Basic (in shares)	335,888,051	298,269,801	328,494,512	297,558,618
Weighted average Class A and Class B Common shares outstanding- Diluted (in shares)	335,888,051	298,269,801	328,494,512	297,558,618