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	$ (163,273)	$ (67,525)
Other comprehensive income:
Unrealized gains on investments	3,602	1,144
Reclassification adjustment for net investment losses included in net loss	434	0
Net unrealized gains on investments	4,036	1,144
Currency translation adjustments	(90)	(42)
Total other comprehensive income	3,946	1,102
Comprehensive loss	$ (159,327)	$ (66,423)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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