Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (94,791)	$ (36,503)
Other comprehensive income (loss):
Net unrealized (loss) gain on marketable securities, net of tax	(9,375)	1,041
Comprehensive loss attributable to common stockholders	$ (104,166)	$ (35,462)

Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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