v3.19.3.a.u2

Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Total revenue	$ 14,055	$ 17,046	$ 13,083	$ 16,025	$ 35,421	$ 41,757	$ 28,851	$ 29,039	$ 60,209	$ 135,068	$ 205,825
Total operating expenses	144,611	146,861	156,792	157,665	188,452	127,575	125,866	106,441	605,929	548,334	475,181
Loss from operations	$ (130,556)	$ (129,815)	$ (143,709)	$ (141,640)	$ (153,031)	$ (85,818)	$ (97,015)	$ (77,402)	$ (545,720)	$ (413,266)	$ (269,356)
Net loss per share attributable to common stockholders, basic and diluted (usd per share)	$ (0.37)	$ (0.37)	$ (0.41)	$ (0.40)	$ (1.14)	$ (1.32)	$ (1.43)	$ (1.16)	$ (1.55)	$ (4.95)	$ (4.18)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New accounting pronouncement or change in accounting principle, effect of change on operating results		$ 1,000	$ 200	$ 200

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- Definition

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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