Restatement of Previously Issued Financial Statements - Schedule of Operations and Comprehensive Loss (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue:
Product revenue, net	$ 10,612			$ 12,281			$ 45,274	$ 21,414
Other revenue	0			111			12	249
Total revenues	10,612			12,392			45,286	21,663
Cost of product revenue	11,781			9,126			66,591	21,335
Gross margin	(1,169)			3,266			(21,305)	328
Operating expenses:
Selling, general and administrative	39,765			40,771			136,479	118,700
Research and development	23,174			58,501			73,408	131,536
Total operating expenses	65,750			99,272			212,698	250,236
Gain from sale of priority review voucher, net	0			0			0	92,930
Loss from operations	(66,919)			(96,006)			(234,003)	(156,978)
Interest income	1,640			2,454			7,056	7,961
Interest expense				(4,311)				(12,331)
Other income, net	10,191			10,631			31,782	30,177
Loss before income taxes	(60,866)			(87,232)			(212,040)	(131,171)
Income tax (expense) benefit	58			0			37	80
Net loss	$ (60,808)	$ (81,393)	$ (69,804)	$ (87,232)	$ (62,789)	$ 18,930	$ (212,003)	$ (131,091)
Net loss per share - basic (in dollars per share)	$ (0.31)			$ (0.80)			$ (1.10)	$ (1.23)
Net loss per share - diluted (in dollars per share)	$ (0.31)			$ (0.80)			$ (1.10)	$ (1.23)
Weighted-average number of common shares used in computing net loss per share - basic (in shares)	193,893			109,098			193,588	106,924
Weighted-average number of common shares used in computing net loss per share - diluted (in shares)	193,893			109,098			193,588	106,924
Other comprehensive income (loss):
Total other comprehensive income (loss)	$ 611	$ (14)	$ (312)	$ 137	722	984	$ 285	$ 1,843
Comprehensive loss	(60,197)			(87,095)			(211,718)	(129,248)
Other comprehensive income (loss), tax	$ 0			0			$ 0	0
As Previously Reported
Revenue:
Product revenue, net				12,281				21,414
Other revenue				111				249
Total revenues				12,392				21,663
Cost of product revenue				10,955				23,895
Gross margin				1,437				(2,232)
Operating expenses:
Selling, general and administrative				40,703				118,406
Research and development				45,463				133,881
Total operating expenses				86,166				252,287
Gain from sale of priority review voucher, net								92,930
Loss from operations				(84,729)				(161,589)
Interest income				2,454				7,961
Interest expense				0				(3)
Other income, net				10,544				30,152
Loss before income taxes				(71,731)				(123,479)
Income tax (expense) benefit				0				80
Net loss				$ (71,731)	(72,908)	21,240		$ (123,399)
Net loss per share - basic (in dollars per share)				$ (0.66)				$ (1.15)
Net loss per share - diluted (in dollars per share)				$ (0.66)				$ (1.15)
Weighted-average number of common shares used in computing net loss per share - basic (in shares)				109,098				106,924
Weighted-average number of common shares used in computing net loss per share - diluted (in shares)				109,098				106,924
Other comprehensive income (loss):
Total other comprehensive income (loss)				$ 137				$ 1,843
Comprehensive loss				(71,594)				(121,556)
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Embedded Leases
Revenue:
Product revenue, net				0				0
Other revenue				0				0
Total revenues				0				0
Cost of product revenue				(1,829)				(2,560)
Gross margin				1,829				2,560
Operating expenses:
Selling, general and administrative				68				294
Research and development				14,757				52
Total operating expenses				14,825				346
Gain from sale of priority review voucher, net								0
Loss from operations				(12,996)				2,214
Interest income				0				0
Interest expense				(4,311)				(12,328)
Other income, net				168				106
Loss before income taxes				(17,139)				(10,008)
Income tax (expense) benefit				0				0
Net loss				$ (17,139)	9,482	(2,351)		$ (10,008)
Net loss per share - basic (in dollars per share)				$ (0.16)				$ (0.09)
Net loss per share - diluted (in dollars per share)				$ (0.16)				$ (0.09)
Weighted-average number of common shares used in computing net loss per share - basic (in shares)				0				0
Weighted-average number of common shares used in computing net loss per share - diluted (in shares)				0				0
Other comprehensive income (loss):
Total other comprehensive income (loss)				$ 0				$ 0
Comprehensive loss				(17,139)				(10,008)
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments
Revenue:
Product revenue, net				0				0
Other revenue				0				0
Total revenues				0				0
Cost of product revenue				0				0
Gross margin				0				0
Operating expenses:
Selling, general and administrative				0				0
Research and development				(1,719)				(2,397)
Total operating expenses				(1,719)				(2,397)
Gain from sale of priority review voucher, net								0
Loss from operations				1,719				2,397
Interest income				0				0
Interest expense				0				0
Other income, net				(81)				(81)
Loss before income taxes				1,638				2,316
Income tax (expense) benefit				0				0
Net loss				$ 1,638	$ 637	$ 41		$ 2,316
Net loss per share - basic (in dollars per share)				$ 0.02				$ 0.02
Net loss per share - diluted (in dollars per share)				$ 0.02				$ 0.02
Weighted-average number of common shares used in computing net loss per share - basic (in shares)				0				0
Weighted-average number of common shares used in computing net loss per share - diluted (in shares)				0				0
Other comprehensive income (loss):
Total other comprehensive income (loss)				$ 0				$ 0
Comprehensive loss				$ 1,638				$ 2,316