Condensed Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 76,853	$ (43,404)
Unrealized gains on marketable securities, net of taxes of $0 and $0, respectively	0	(1)
Foreign currency translation adjustments	(551)	(361)
Other comprehensive loss	(551)	(362)
Comprehensive income (loss)	$ 76,302	$ (43,766)