Restatement of Previously Issued Financial Statements - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net loss											$ (211,913)	$ (230,342)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization											28,525	8,344
Stock-based compensation expense											19,429	35,090
Noncash research and development expense (finance lease)											21,198	11,180
Noncash operating lease expense											29,772	23,562
Loss on fixed assets disposal											(92,930)	(102,000)
Unrealized loss (gain) on equity securities											0	3,135
Excess inventory reserve											15,363	7,519
Other non-cash items											24	4,138
Gain on foreign currency exchange rates											167	(1,801)
Changes in operating assets and liabilities:
Prepaid expenses and other assets											(3,894)	(4,820)
Inventory											(36,560)	(7,227)
Operating lease right-of-use assets												0
Accounts payable											2,841	(7,709)
Accrued expenses and other liabilities											13,353	(45,974)
Accrued interest payable under finance lease											3,426	4,758
Operating lease liabilities											(28,887)	(14,072)
Net cash used in operating activities											(235,046)	(316,219)
Cash flows from investing activities:
Purchase of property, plant and equipment											(4,189)	(8,208)
Proceeds from maturities of marketable securities											108,521	131,445
Proceeds from sales of marketable securities											5,853	30,216
Purchase of intangible assets											(4,868)	(5,000)
Proceeds from sale of priority review voucher											92,930	102,000
Net cash provided by investing activities											154,950	250,453
Cash flows from financing activities:
Proceeds from exercise of stock options and ESPP contributions												16
Principal payments on finance leases											(54,367)	(36,734)
Proceeds from public offering of common stock, net of issuance costs											248,198	54,237
Net cash provided by financing activities											196,248	17,519
Increase (decrease) in cash, cash equivalents and restricted cash											116,152	(48,247)
Cash, cash equivalents and restricted cash at beginning of year			$ 158,445			$ 206,692	$ 158,445	$ 206,692	$ 158,445	$ 206,692	158,445	206,692
Cash, cash equivalents and restricted cash at end of year											274,597	158,445
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents											221,755	113,006
Restricted cash included in receivables and other current assets											9,202	1,502
Restricted cash included in restricted cash and other non-current assets											43,640	43,937
Total cash, cash equivalents and restricted cash											274,597	158,445
Supplemental cash flow disclosures:
Right-of-use assets obtained in exchange for operating lease liabilities												221,036
Increase (Reduction) of right of use asset and associated operating lease liability due to lease reassessment												0
Purchases of property, plant and equipment included in accounts payable and accrued expenses											884	(3)
Offering expenses included in accounts payable and accrued expenses											964	170
Right-of-use assets obtained in exchange for finance lease liabilities											21,929	73,443
Cash paid (refunded) during the period for income taxes												253
Public Offering
Cash flows from financing activities:
Proceeds from public offering of common stock, net of issuance costs			130,645				130,122	8,043	130,072	54,365		54,237
Previously Reported
Cash flows from operating activities:
Net loss	$ (71,731)	$ (72,908)	21,240	$ (76,520)	$ (100,138)	(122,152)	(51,668)	(222,290)	(123,399)	(298,810)		(266,578)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization			1,082			1,014	2,052	2,358	3,124	3,745		5,001
Stock-based compensation expense			5,391			12,390	11,145	21,298	16,013	30,509		35,188
Noncash research and development expense (finance lease)			0			0	0	0	0	0		0
Noncash operating lease expense			0			0	0	0	0	0		0
Loss on fixed assets disposal			(92,930)				(92,930)		(92,930)			(102,000)
Unrealized loss (gain) on equity securities						2,508		3,135		3,135		3,135
Excess inventory reserve			228			7,519	3,939	7,519	5,333	7,519		7,519
Other non-cash items			237			189	343	661	19	2,890		3,904
Gain on foreign currency exchange rates			0			0	0	0	0	0		0
Changes in operating assets and liabilities:
Prepaid expenses and other assets			(9,335)			(4,303)	(9,082)	(9,629)	(523)	(6,197)		3,260
Inventory			(3,586)			(8,756)	(16,496)		(24,931)			(7,227)
Operating lease right-of-use assets			11,829			6,517	24,102	17,636	40,101	29,650		42,706
Accounts payable			(6,443)			2,467	(14,767)	(1,175)	(5,787)	(7,552)		(920)
Accrued expenses and other liabilities			(9,065)			(16,561)	3,625	(28,565)	7,125	(39,046)		(51,228)
Accrued interest payable under finance lease			0			0	0	0	0	0		0
Operating lease liabilities			(8,001)			(6,128)	(19,488)	(10,602)	(30,506)	(22,523)		(25,713)
Net cash used in operating activities			(86,638)			(125,296)	(159,363)	(219,654)	(221,209)	(296,680)		(352,953)
Cash flows from investing activities:
Purchase of property, plant and equipment			(232)			(857)	(937)	(6,836)	(2,975)	(8,100)		(8,208)
Proceeds from maturities of marketable securities			4,021			70,783	26,521	108,225	99,521	125,095		131,445
Proceeds from sales of marketable securities			5,853				5,853	30,213	5,853	30,216		30,216
Purchase of intangible assets			(868)				(868)		(868)	0		(5,000)
Proceeds from sale of priority review voucher			92,972				92,930		92,930			102,000
Net cash provided by investing activities			82,136			69,926	89,081	131,602	151,164	147,211		250,453
Cash flows from financing activities:
Proceeds from exercise of stock options and ESPP contributions			7			9	85		93	3		16
Principal payments on finance leases			0			0	0	0	0	0		0
Net cash provided by financing activities			130,456			9	130,011	8,043	129,969	54,368		54,253
Increase (decrease) in cash, cash equivalents and restricted cash			125,954			(55,361)	59,729	(80,009)	59,924	(95,101)		(48,247)
Cash, cash equivalents and restricted cash at beginning of year	218,174	284,399	158,445	126,684	151,332	206,692	158,445	206,692	158,445	206,692	158,445	206,692
Cash, cash equivalents and restricted cash at end of year	218,369	218,174	284,399	111,592	126,684	151,332	218,174	126,684	218,369	111,592		158,445
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	165,347	172,872	239,045	66,478	81,499	106,260	172,872	81,499	165,347	66,478		113,006
Restricted cash included in receivables and other current assets	8,885	1,364	1,417	1,565	1,635	1,822	1,364	1,635	8,885	1,565		1,502
Restricted cash included in restricted cash and other non-current assets	44,137	43,938	43,937	43,549	43,550	43,250	43,938	43,550	44,137	43,549		43,937
Total cash, cash equivalents and restricted cash	218,369	218,174	284,399	111,592	126,684	151,332	218,174	126,684	218,369	111,592		158,445
Supplemental cash flow disclosures:
Right-of-use assets obtained in exchange for operating lease liabilities						26,882	44,968	218,836		229,636		236,003
Increase (Reduction) of right of use asset and associated operating lease liability due to lease reassessment							(14)		8,003	(2,833)		(2,833)
Purchases of property, plant and equipment included in accounts payable and accrued expenses			189			2,134	2,290	842	941	176		(3)
Offering expenses included in accounts payable and accrued expenses			523						248	298		170
Right-of-use assets obtained in exchange for finance lease liabilities			0				0		0	0		0
Cash paid (refunded) during the period for income taxes			2				7		5			253
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Leases
Cash flows from operating activities:
Net loss	(17,139)	9,482	(2,351)	4,254	13,259	15,160	7,131	28,419	(10,008)	32,673		35,934
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization			5,131			89	10,274	179	16,648	268		3,547
Stock-based compensation expense			0			0	0	0	0	0		0
Noncash research and development expense (finance lease)			1,441			4,050	434	4,050	22,223	11,866		11,180
Noncash operating lease expense			7,423			3,035	14,966	9,738	23,965	16,517		23,562
Loss on fixed assets disposal			0				0		0			0
Unrealized loss (gain) on equity securities						0		0		0		0
Excess inventory reserve			0			0	0	0	1,554	0		0
Other non-cash items			0			0	0	234	0	234		234
Gain on foreign currency exchange rates			(108)			(530)	(281)	(1,874)	(1,062)	(3,301)		(1,801)
Changes in operating assets and liabilities:
Prepaid expenses and other assets			2,846			(2,591)	2,642	(6,389)	2,640	(6,508)		(8,080)
Inventory			610			0	1,838		1,651			0
Operating lease right-of-use assets			(11,829)			(6,517)	(24,102)	(17,636)	(40,101)	(29,650)		(42,706)
Accounts payable			7,703			(1,501)	9,144	590	7,183	537		(6,789)
Accrued expenses and other liabilities			1,859			(12,618)	(573)	(9,308)	583	(10,388)		5,254
Accrued interest payable under finance lease			915			1,014	819	1,924	3,203	3,464		4,758
Operating lease liabilities			1,640			5,981	6,212	8,656	11,820	11,580		11,641
Net cash used in operating activities			15,280			5,572	28,504	18,583	40,299	27,292		36,734
Cash flows from investing activities:
Purchase of property, plant and equipment			0			0	0	0	0	0		0
Proceeds from maturities of marketable securities			0			0	0	0	0	0		0
Proceeds from sales of marketable securities			0				0	0	0	0		0
Purchase of intangible assets			0				0		0	0		0
Proceeds from sale of priority review voucher			0				0		0			0
Net cash provided by investing activities			0			0	0	0	0	0		0
Cash flows from financing activities:
Proceeds from exercise of stock options and ESPP contributions			0			0	0		0	0		0
Principal payments on finance leases			(15,280)			(5,572)	(28,504)	(18,583)	(40,299)	(27,292)		(36,734)
Proceeds from public offering of common stock, net of issuance costs							0		0	0
Net cash provided by financing activities			(15,280)			(5,572)	(28,504)	(18,583)	(40,299)	(27,292)		(36,734)
Increase (decrease) in cash, cash equivalents and restricted cash			0			0	0	0	0	0		0
Cash, cash equivalents and restricted cash at beginning of year	0	0	0	0	0	0	0	0	0	0	0	0
Cash, cash equivalents and restricted cash at end of year	0	0	0	0	0	0	0	0	0	0		0
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	0	0	0	0	0	0	0	0	0	0		0
Restricted cash included in receivables and other current assets	0	0	0	0	0	0	0	0	0	0		0
Restricted cash included in restricted cash and other non-current assets	0	0	0	0	0	0	0	0	0	0		0
Total cash, cash equivalents and restricted cash	0	0	0	0	0	0	0	0	0	0		0
Supplemental cash flow disclosures:
Right-of-use assets obtained in exchange for operating lease liabilities						(1,829)	(44,968)	(3,796)		(14,596)		(14,967)
Increase (Reduction) of right of use asset and associated operating lease liability due to lease reassessment							14		(8,003)	2,833		2,833
Purchases of property, plant and equipment included in accounts payable and accrued expenses			0			0	0	0	0	0		0
Offering expenses included in accounts payable and accrued expenses			0						0	0		0
Right-of-use assets obtained in exchange for finance lease liabilities			(214)				3,436		21,508	10,800		73,443
Cash paid (refunded) during the period for income taxes			0				0		0			0
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Leases | Public Offering
Cash flows from financing activities:
Proceeds from public offering of common stock, net of issuance costs			0					0				0
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments
Cash flows from operating activities:
Net loss	1,638	637	41	5,210	523	1,440	678	1,963	2,316	7,173		302
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization			(41)			(56)	(76)	(108)	(112)	(129)		(204)
Stock-based compensation expense			0			(1,384)	0	(1,855)	0	(2,044)		(98)
Noncash research and development expense (finance lease)			0			0	0	0	0	0		0
Noncash operating lease expense			0			0	0	0	0	0		0
Loss on fixed assets disposal			0				0		0			0
Unrealized loss (gain) on equity securities						0		0		0		0
Excess inventory reserve			2,355			0	2,339	0	2,315	0		0
Other non-cash items			0			0	0	0	81	0		0
Gain on foreign currency exchange rates			0			0	0	0	0	0		0
Changes in operating assets and liabilities:
Prepaid expenses and other assets			2,800			0	0	0	0	0		0
Inventory			(2,355)			0	(2,941)		(2,917)			0
Operating lease right-of-use assets			0			0	0	0	0	0		0
Accounts payable			0			0	0	0	316	0		0
Accrued expenses and other liabilities			0			0	0	0	(1,999)	0		0
Accrued interest payable under finance lease			0			0	0	0	0	0		0
Operating lease liabilities			0			0	0	0	0	0		0
Net cash used in operating activities			0			0	0	0	0	5,000		0
Cash flows from investing activities:
Purchase of property, plant and equipment			0			0	0	0	0	0		0
Proceeds from maturities of marketable securities			0			0	0	0	0	0		0
Proceeds from sales of marketable securities			0				0	0	0	0		0
Purchase of intangible assets			0				0		0	(5,000)		0
Proceeds from sale of priority review voucher			0				0		0			0
Net cash provided by investing activities			0			0	0	0	0	(5,000)		0
Cash flows from financing activities:
Proceeds from exercise of stock options and ESPP contributions			0			0	0		0	0		0
Principal payments on finance leases			0			0	0	0	0	0		0
Proceeds from public offering of common stock, net of issuance costs							0		0	0
Net cash provided by financing activities			0			0	0	0	0	0		0
Increase (decrease) in cash, cash equivalents and restricted cash			0			0	0	0	0	0		0
Cash, cash equivalents and restricted cash at beginning of year	0	0	0	0	0	0	0	0	0	0	$ 0	0
Cash, cash equivalents and restricted cash at end of year	0	0	0	0	0	0	0	0	0	0		0
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	0	0	0	0	0	0	0	0	0	0		0
Restricted cash included in receivables and other current assets	0	0	0	0	0	0	0	0	0	0		0
Restricted cash included in restricted cash and other non-current assets	0	0	0	0	0	0	0	0	0	0		0
Total cash, cash equivalents and restricted cash	$ 0	$ 0	0	$ 0	$ 0	0	0	0	0	0		0
Supplemental cash flow disclosures:
Right-of-use assets obtained in exchange for operating lease liabilities						0	0	0		0		0
Increase (Reduction) of right of use asset and associated operating lease liability due to lease reassessment							0		0	0		0
Purchases of property, plant and equipment included in accounts payable and accrued expenses			0			$ 0	0	0	0	0		0
Offering expenses included in accounts payable and accrued expenses			0						0	0		0
Right-of-use assets obtained in exchange for finance lease liabilities			0				0		0	$ 0		0
Cash paid (refunded) during the period for income taxes			0				$ 0		$ 0			0
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments | Public Offering
Cash flows from financing activities:
Proceeds from public offering of common stock, net of issuance costs			$ 0					$ 0				$ 0