CONSOLIDATED AND CONDENSED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (272,035)	$ (151,726)	$ (654,362)	$ (360,235)
Other comprehensive loss:
Foreign currency translation adjustments	(75)	(243)	129	249
Net unrealized (loss) gain on available-for-sale investments	(5)	85	195	47
Comprehensive loss	$ (272,115)	$ (151,884)	$ (654,038)	$ (359,939)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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