CONSOLIDATED AND CONDENSED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (100,734)	$ (38,875)	$ (208,509)	$ (95,414)
Other comprehensive loss:
Foreign currency translation adjustments	1,252	(822)	492	(1,103)
Net unrealized gain (loss) on available-for-sale investments	97	20	(38)	43
Comprehensive loss	$ (99,385)	$ (39,677)	$ (208,055)	$ (96,474)

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

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