Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - 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	$ (290,478)	$ (42,264)	$ (363,443)	$ (101,481)
Other comprehensive income (loss):
Unrealized gains (losses) arising during period	18	(46)	741	(46)
Reclassification adjustments for realization of gain on sale of marketable securities included in net loss	(322)	0	(322)	0
Total other comprehensive (loss) income	(304)	(46)	419	(46)
Comprehensive loss	$ (290,782)	$ (42,310)	$ (363,024)	$ (101,527)

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

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