CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (535,480)	$ (7,524)	$ 34,355
Other comprehensive (loss) income, net of applicable taxes:
Foreign currency translation adjustment	(3,658)	5,913	(11)
Unrealized (loss) gain on short-term investments	0	(147)	577
Total other comprehensive (loss) income	(3,658)	5,766	566
Comprehensive (loss) income	$ (539,138)	$ (1,758)	$ 34,921