Quarterly Financial Information (Unaudited) - Statements of Stockholders' Equity (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	Dec. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)	107,022,000	106,454,000	106,370,000	82,880,000	73,551,000	71,438,000	106,454,000	73,551,000	107,022,000	82,880,000	192,772,000	82,923,000
Stockholders' equity											$ 194,537	$ 134,333	$ 276,129
Vesting of restricted stock units											$ (196)	0
Exercise of stock options (in shares)											3,000
Exercise of stock options											$ 92	16
Purchase of common stock under ESPP											429	239
Issuance of common stock											248,367	54,067
Issuance of unrestricted stock awards to settle accrued employee compensation												1
Stock-based compensation											21,151	35,382
Other comprehensive income											2,274	(1,159)
Net loss											$ (211,913)	$ (230,342)
Common shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)											192,772,000	82,923,000	71,115,000
Stockholders' equity											$ 1,905	$ 830	$ 711
Vesting of restricted stock units (in shares)											1,092,000	979,000
Vesting of restricted stock units											$ 10	$ 10
Exercise of stock options (in shares)											24,000	7,000
Purchase of common stock under ESPP (in shares)											135,000	68,000
Purchase of common stock under ESPP											$ 2	$ 1
Issuance of common stock (in shares)											106,333,000	10,742,000
Issuance of common stock											$ 1,063	$ 107
Issuance of unrestricted stock awards to settle accrued employee compensation (in shares)												12,000
Issuance of unrestricted stock awards to settle accrued employee compensation												$ 1
Additional paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity											4,454,756	4,185,988	4,096,402
Vesting of restricted stock units											(206)	(10)
Exercise of stock options											92	16
Purchase of common stock under ESPP											427	238
Issuance of common stock											247,304	53,960
Stock-based compensation											21,151	35,382
Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity											(1,796)	(4,070)	(2,911)
Other comprehensive income											2,274	(1,159)
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity											(4,260,328)	(4,048,415)	(3,818,073)
Net loss											$ (211,913)	(230,342)
Previously Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	$ 222,536	$ 289,019	$ 354,740	$ 158,857	$ 180,116	$ 263,259	$ 289,019	$ 180,116	$ 222,536	$ 158,857		196,343	$ 374,277
Vesting of restricted stock units	0	0	(195)	0	0	0						0
Exercise of stock options	8	77	7		1	1						16
Purchase of common stock under ESPP			227	239								239
Issuance of common stock	(50)		130,291	46,024	8,043							54,067
Issuance of unrestricted stock awards to settle accrued employee compensation												1
Stock-based compensation	5,153	6,388	5,843	9,212	8,908	12,681						35,480
Other comprehensive income	137	722	984	(214)	43	(1,548)						(1,159)
Net loss	$ (71,731)	$ (72,908)	$ 21,240	$ (76,520)	$ (100,138)	$ (122,152)	$ (51,668)	$ (222,290)	$ (123,399)	$ (298,810)		$ (266,578)
Previously Reported | Common shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)	107,022,000	106,454,000	106,370,000	82,880,000	73,551,000	71,438,000	106,454,000	73,551,000	107,022,000	82,880,000		82,923,000	71,115,000
Stockholders' equity	$ 1,071	$ 1,065	$ 1,064	$ 829	$ 735	$ 714	$ 1,065	$ 735	$ 1,071	$ 829		$ 830	$ 711
Vesting of restricted stock units (in shares)	566,000	65,000	382,000	572,000	60,000	310,000						979,000
Vesting of restricted stock units	$ 6	$ 1	$ 3	$ 6	$ 1	$ 3						$ 10
Exercise of stock options (in shares)	2,000	19,000	3,000		1,000	1,000						7,000
Purchase of common stock under ESPP (in shares)			62,000	67,000								68,000
Purchase of common stock under ESPP			$ 1	$ 1								$ 1
Issuance of common stock (in shares)			23,000,000	8,690,000	2,052,000							10,742,000
Issuance of common stock			$ 230	$ 87	$ 20							$ 107
Issuance of unrestricted stock awards to settle accrued employee compensation (in shares)						12,000						12,000
Issuance of unrestricted stock awards to settle accrued employee compensation												$ 1
Previously Reported | Additional paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	$ 4,333,594	$ 4,328,489	4,322,025	4,181,393	4,126,012	$ 4,109,081	4,328,489	4,126,012	4,333,594	4,181,393		4,186,086	4,096,402
Vesting of restricted stock units	(6)	(1)	(198)	(6)	(1)	(3)						(10)
Exercise of stock options	8	77	7		1	1						16
Purchase of common stock under ESPP			226	238								238
Issuance of common stock	(50)		130,061	45,937	8,023							53,960
Stock-based compensation	5,153	6,388	5,843	9,212	8,908	12,681						35,480
Previously Reported | Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	(2,227)	(2,364)	(3,086)	(4,630)	(4,416)	(4,459)	(2,364)	(4,416)	(2,227)	(4,630)		(4,070)	(2,911)
Other comprehensive income	137	722	984	(214)	43	(1,548)						(1,159)
Previously Reported | Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	(4,109,902)	(4,038,171)	(3,965,263)	(4,018,735)	(3,942,215)	(3,842,077)	(4,038,171)	(3,942,215)	(4,109,902)	(4,018,735)		(3,986,503)	(3,719,925)
Net loss	(71,731)	(72,908)	21,240	(76,520)	(100,138)	(122,152)						(266,578)
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Leases
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	(69,708)	(52,569)	(62,051)	(62,961)	(67,215)	(80,474)	(52,569)	(67,215)	(69,708)	(62,961)		(59,700)	$ (95,634)
Net loss	$ (17,139)	$ 9,482	$ (2,351)	$ 4,254	$ 13,259	$ 15,160	$ 7,131	$ 28,419	$ (10,008)	$ 32,673		$ 35,934
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Leases | Common shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)	0	0	0	0	0	0	0	0	0	0		0	0
Stockholders' equity	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0		$ 0	$ 0
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Leases | Additional paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	0	0	0	0	0	0	0	0	0	0		0	0
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Leases | Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	0	0	0	0	0	0	0	0	0	0		0	0
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Leases | Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	(69,708)	(52,569)	(62,051)	(62,961)	(67,215)	(80,474)	(52,569)	(67,215)	(69,708)	(62,961)		(59,700)	(95,634)
Net loss	(17,139)	9,482	(2,351)	4,254	13,259	15,160						35,934
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	6	(1,632)	(2,269)	2,616	(2,405)	(2,458)	(1,632)	(2,405)	6	2,616		(2,310)	$ (2,514)
Stock-based compensation				(189)	(470)	(1,384)						(98)
Net loss	$ 1,638	$ 637	$ 41	$ 5,210	$ 523	$ 1,440	$ 678	$ 1,963	$ 2,316	$ 7,173		$ 302
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments | Common shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)	0	0	0	0	0	0	0	0	0	0		0	0
Stockholders' equity	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0		$ 0	$ 0
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments | Additional paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	(98)	(98)	(98)	(2,043)	(1,854)	(1,384)	(98)	(1,854)	(98)	(2,043)		(98)	0
Stock-based compensation				(189)	(470)	(1,384)						(98)
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments | Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	0	0	0	0	0	0	0	0	0	0		0	0
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments | Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	104	(1,534)	(2,171)	4,659	(551)	(1,074)	(1,534)	(551)	104	4,659		(2,212)	(2,514)
Net loss	1,638	637	41	5,210	523	1,440						302
As Restated
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	152,834	234,818	290,420	98,512	110,496	180,327	234,818	110,496	152,834	98,512		$ 134,333	$ 276,129
Vesting of restricted stock units	0	0	(195)	0	0	0
Exercise of stock options	8	77	7		1	1
Purchase of common stock under ESPP			227	239
Issuance of common stock	(50)		130,291	46,024	8,043
Issuance of unrestricted stock awards to settle accrued employee compensation						0
Stock-based compensation	5,153	6,388	5,843	9,023	8,438	11,297
Other comprehensive income	137	722	984	(214)	43	(1,548)
Net loss	$ (87,232)	$ (62,789)	$ 18,930	$ (67,056)	$ (86,356)	$ (105,552)	$ (43,859)	$ (191,908)	$ (131,091)	$ (258,964)
As Restated | Common shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares outstanding (in shares)	107,022,000	106,454,000	106,370,000	82,880,000	73,551,000	71,438,000	106,454,000	73,551,000	107,022,000	82,880,000		82,923,000	71,115,000
Stockholders' equity	$ 1,071	$ 1,065	$ 1,064	$ 829	$ 735	$ 714	$ 1,065	$ 735	$ 1,071	$ 829		$ 830	$ 711
Vesting of restricted stock units (in shares)	566,000	65,000	382,000	572,000	60,000	310,000
Vesting of restricted stock units	$ 6	$ 1	$ 3	$ 6	$ 1	$ 3
Exercise of stock options (in shares)	2,000	19,000	3,000		1,000	1,000
Purchase of common stock under ESPP (in shares)			62,000	67,000
Purchase of common stock under ESPP			$ 1	$ 1
Issuance of common stock (in shares)			23,000,000	8,690,000	2,052,000
Issuance of common stock			$ 230	$ 87	$ 20
Issuance of unrestricted stock awards to settle accrued employee compensation (in shares)						12,000
As Restated | Additional paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	$ 4,333,496	$ 4,328,391	4,321,927	4,179,350	4,124,158	$ 4,107,697	4,328,391	4,124,158	4,333,496	4,179,350		4,185,988	4,096,402
Vesting of restricted stock units	(6)	(1)	(198)	(6)	(1)	(3)
Exercise of stock options	8	77	7		1	1
Purchase of common stock under ESPP			226	238
Issuance of common stock	(50)		130,061	45,937	8,023
Stock-based compensation	5,153	6,388	5,843	9,023	8,438	11,297
As Restated | Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	(2,227)	(2,364)	(3,086)	(4,630)	(4,416)	(4,459)	(2,364)	(4,416)	(2,227)	(4,630)		(4,070)	(2,911)
Other comprehensive income	137	722	984	(214)	43	(1,548)
As Restated | Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity	(4,179,506)	(4,092,274)	(4,029,485)	(4,077,037)	(4,009,981)	(3,923,625)	$ (4,092,274)	$ (4,009,981)	$ (4,179,506)	$ (4,077,037)		$ (4,048,415)	$ (3,818,073)
Net loss	$ (87,232)	$ (62,789)	$ 18,930	$ (67,056)	$ (86,356)	$ (105,552)