Restatement of Previously Issued Financial Statements - Consolidated Balance Sheets (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 221,755				$ 113,006
Marketable securities	0				67,321
Prepaid expenses	14,800				8,618
Receivables and other current assets	22,211				14,627
Total current assets	281,685				203,572
Marketable securities	0				1,414
Property, plant and equipment, net	65,936				67,636
Goodwill	5,646				5,646
Intangible assets, net	10,438				4,868
Operating lease right-of-use assets	201,113				230,885
Restricted cash and other non-current assets	54,343				55,793
Total assets	619,161				569,814
Current liabilities:
Accounts payable	18,498				14,867
Accrued expenses and other current liabilities	73,188				53,464
Operating lease liability, current portion	21,202				27,594
Finance lease liability, current portion	84,705				60,654
Total current liabilities	200,113				156,579
Operating lease liability, net of current portion	186,687				209,128
Finance lease liability, net of current portion	37,732				69,682
Other non-current liabilities	92				92
Total liabilities	424,624				435,481
Commitments and contingencies Note 12
Stockholders' equity:
Preferred stock, $0.01 par value, 5,000 shares authorized; 0 shares issued and    outstanding at December 31, 2023 and December 31, 2022	0				0
Common stock, $0.01 par value, 250,000 and 125,000 shares authorized; 192,772 and 82,923 shares issued and outstanding at December 31, 2023 and December 31, 2022, respectively	1,905				830
Additional paid-in capital	4,454,756				4,185,988
Accumulated other comprehensive loss	(1,796)				(4,070)
Accumulated deficit	(4,260,328)				(4,048,415)
Total stockholders' equity	194,537				134,333				$ 276,129
Total liabilities and stockholders' equity	$ 619,161				$ 569,814
Preferred stock, par value per share (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000	5,000,000	5,000,000	5,000,000	5,000,000	5,000,000	5,000,000
Preferred stock, shares outstanding (in shares)	0	0	0	0	0	0	0	0
Preferred stock, shares issued (in shares)	0	0	0	0	0	0	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000	250,000,000	125,000,000	125,000,000	125,000,000	125,000,000	125,000,000
Common stock, shares issued (in shares)	192,772,000	107,022,000	106,454,000	106,370,000	82,923,000	82,880,000	73,551,000	71,438,000
Common stock, shares outstanding (in shares)	192,772,000	107,022,000	106,454,000	106,370,000	82,923,000	82,880,000	73,551,000	71,438,000
Previously Reported
Current assets:
Cash and cash equivalents		$ 165,347	$ 172,872	$ 239,045	$ 113,006	$ 66,478	$ 81,499	$ 106,260
Marketable securities		8,946	72,431	79,212	67,321	73,155	51,010	105,328
Prepaid expenses		11,431	13,597	13,466	8,374	8,270	24,473	31,798
Receivables and other current assets		17,383	15,435	15,539	10,787	12,535	10,476	11,531
Total current assets		247,076	287,977	351,071	199,488	160,438	167,458	254,917
Marketable securities					1,414	1,407	40,641	55,049
Property, plant and equipment, net		9,972	10,227	8,718	9,362	11,535	14,566	11,234
Goodwill		5,646	5,646	5,646	5,646	5,646	5,646	5,646
Intangible assets, net		5,368	5,490	5,613	4,868	0
Operating lease right-of-use assets		294,717	302,849	270,153	281,996	288,684	292,731	111,897
Restricted cash and other non-current assets		50,829	51,204	51,535	52,128	52,388	52,550	52,328
Total assets		613,608	663,393	692,736	554,902	520,098	573,592	491,071
Current liabilities:
Accounts payable		19,852	10,894	19,235	25,092	18,622	24,865	28,350
Accrued expenses and other current liabilities		57,768	56,531	45,294	51,985	64,314	75,550	89,032
Operating lease liability, current portion		71,684	67,591	51,404	51,160	43,791	48,446	25,510
Finance lease liability, current portion		0	0	0	0	0	0	0
Total current liabilities		158,957	135,016	115,933	128,237	126,727	148,861	142,892
Operating lease liability, net of current portion		232,023	239,266	221,971	230,230	234,422	244,522	84,828
Finance lease liability, net of current portion		0	0	0	0	0	0	0
Other non-current liabilities		92	92	92	92	92	93	92
Total liabilities		391,072	374,374	337,996	358,559	361,241	393,476	227,812
Stockholders' equity:
Preferred stock, $0.01 par value, 5,000 shares authorized; 0 shares issued and    outstanding at December 31, 2023 and December 31, 2022		0	0	0	0	0	0	0
Common stock, $0.01 par value, 250,000 and 125,000 shares authorized; 192,772 and 82,923 shares issued and outstanding at December 31, 2023 and December 31, 2022, respectively		1,071	1,065	1,064	830	829	735	714
Additional paid-in capital		4,333,594	4,328,489	4,322,025	4,186,086	4,181,393	4,126,012	4,109,081
Accumulated other comprehensive loss		(2,227)	(2,364)	(3,086)	(4,070)	(4,630)	(4,416)	(4,459)
Accumulated deficit		(4,109,902)	(4,038,171)	(3,965,263)	(3,986,503)	(4,018,735)	(3,942,215)	(3,842,077)
Total stockholders' equity		222,536	289,019	354,740	196,343	158,857	180,116	263,259	374,277
Total liabilities and stockholders' equity		613,608	663,393	692,736	554,902	520,098	573,592	491,071
Revision of Prior Period, Error Correction, Adjustment | Adjustments to Leases
Current assets:
Cash and cash equivalents		0	0	0	0	0	0	0
Marketable securities		0	0	0	0	0	0	0
Prepaid expenses		(2,040)	(2,162)	(2,082)	244	55	(667)	(1,549)
Receivables and other current assets		3,538	3,659	3,374	3,840	2,425	2,997	198
Total current assets		(1,707)	(341)	682	4,084	2,480	2,330	(1,351)
Marketable securities					0	0	0	0
Property, plant and equipment, net		63,398	51,722	53,223	58,585	(777)	(688)	(599)
Goodwill		0	0	0	0	0	0	0
Intangible assets, net		0	0	0	0	0
Operating lease right-of-use assets		(87,796)	(86,929)	(46,690)	(51,111)	(56,750)	(54,005)	(61,082)
Restricted cash and other non-current assets		3,665	3,665	3,665	3,665	3,665	3,665	3,665
Total assets		(22,440)	(31,883)	10,880	15,223	(51,382)	(48,698)	(59,367)
Current liabilities:
Accounts payable		(3,042)	(1,081)	(2,522)	(10,225)	(2,898)	(2,846)	(4,937)
Accrued expenses and other current liabilities		572	(599)	1,017	(520)	(13,432)	(12,189)	(15,597)
Operating lease liability, current portion		(46,160)	(42,427)	(24,784)	(23,566)	(20,322)	(22,583)	(9,262)
Finance lease liability, current portion		85,208	55,706	58,747	60,654	41,264	47,219	55,995
Total current liabilities		36,578	11,599	32,458	26,343	4,612	9,601	26,199
Operating lease liability, net of current portion		(39,456)	(40,930)	(18,176)	(21,102)	(24,069)	(27,634)	(46,407)
Finance lease liability, net of current portion		50,146	50,017	58,649	69,682	31,036	36,550	41,315
Other non-current liabilities		0	0	0	0	0	0	0
Total liabilities		47,268	20,686	72,931	74,923	11,579	18,517	21,107
Commitments and contingencies Note 12
Stockholders' equity:
Preferred stock, $0.01 par value, 5,000 shares authorized; 0 shares issued and    outstanding at December 31, 2023 and December 31, 2022		0	0	0	0	0	0	0
Common stock, $0.01 par value, 250,000 and 125,000 shares authorized; 192,772 and 82,923 shares issued and outstanding at December 31, 2023 and December 31, 2022, respectively		0	0	0	0	0	0	0
Additional paid-in capital		0	0	0	0	0	0	0
Accumulated other comprehensive loss		0	0	0	0	0	0	0
Accumulated deficit		(69,708)	(52,569)	(62,051)	(59,700)	(62,961)	(67,215)	(80,474)
Total stockholders' equity		(69,708)	(52,569)	(62,051)	(59,700)	(62,961)	(67,215)	(80,474)	(95,634)
Total liabilities and stockholders' equity		(22,440)	(31,883)	10,880	15,223	(51,382)	(48,698)	(59,367)
Revision of Prior Period, Error Correction, Adjustment | Other Adjustments
Current assets:
Cash and cash equivalents		0	0	0	0	0	0	0
Marketable securities		0	0	0	0	0	0	0
Prepaid expenses		0	0	0	0	0	0	0
Receivables and other current assets				(2,800)	0	0	0	0
Total current assets		(7,798)	602	(2,800)	0	0	0	0
Marketable securities					0	0	0	0
Property, plant and equipment, net		(280)	(235)	(270)	(311)	(358)	(406)	(459)
Goodwill		0	0	0	0	0	0	0
Intangible assets, net		0	0	0	0	4,972
Operating lease right-of-use assets				0		0	0	0
Restricted cash and other non-current assets		0	0	0	0	0	0	0
Total assets		(8,078)	367	(3,070)	(311)	4,614	(406)	(459)
Current liabilities:
Accounts payable		316	0	0	0	0	0	0
Accrued expenses and other current liabilities		0	1,999	(801)	1,999	1,998	1,999	1,999
Operating lease liability, current portion		0	0		0	0	0	0
Finance lease liability, current portion		0	0	0	0	0	0	0
Total current liabilities		(8,084)	1,999	(801)	1,999	1,998	1,999	1,999
Operating lease liability, net of current portion		0			0	0	0	0
Finance lease liability, net of current portion		0	0	0	0	0	0	0
Other non-current liabilities		0	0	0	0	0	0	0
Total liabilities		(8,084)	1,999	(801)	1,999	1,998	1,999	1,999
Commitments and contingencies Note 12
Stockholders' equity:
Preferred stock, $0.01 par value, 5,000 shares authorized; 0 shares issued and    outstanding at December 31, 2023 and December 31, 2022		0	0	0	0	0	0	0
Common stock, $0.01 par value, 250,000 and 125,000 shares authorized; 192,772 and 82,923 shares issued and outstanding at December 31, 2023 and December 31, 2022, respectively		0	0	0	0	0	0	0
Additional paid-in capital		(98)	(98)	(98)	(98)	(2,043)	(1,854)	(1,384)
Accumulated other comprehensive loss		0	0	0	0	0	0	0
Accumulated deficit		104	(1,534)	(2,171)	(2,212)	4,659	(551)	(1,074)
Total stockholders' equity		6	(1,632)	(2,269)	(2,310)	2,616	(2,405)	(2,458)	$ (2,514)
Total liabilities and stockholders' equity		$ (8,078)	$ 367	$ (3,070)	$ (311)	$ 4,614	$ (406)	$ (459)