CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Net loss	$ (236,455)	$ (215,524)	$ (285,405)
Other comprehensive income (loss):
Net unrealized gain (loss) on available-for-sale investments, net of tax	311	567	(480)
Comprehensive loss	$ (236,144)	$ (214,957)	$ (285,885)

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

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