Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (88,948)	$ (120,299)
Other comprehensive gain (loss):
Foreign currency translation adjustment gain (loss), net of tax impact of $1,536 and $0, respectively	4,196	(1,804)
Unrealized (loss) gain on available-for-sale securities, net of tax impact of $(56) and $0, respectively	(209)	584
Other comprehensive income	3,987	(1,220)
Comprehensive loss	$ (84,961)	$ (121,519)