CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (24,491)	$ (122,084)
Other comprehensive loss:
Holding (losses) gains associated with marketable securities arising during period, net of tax	(548)	609
Total comprehensive loss	$ (25,039)	$ (121,475)

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

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