CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (107,415)	$ 1,387	$ (117,259)	$ (55,759)
Other comprehensive (loss) income:
Unrealized (loss) gain on marketable securities	(18)	(494)	(431)	615
Comprehensive (loss) income	$ (107,433)	$ 893	$ (117,690)	$ (55,144)