CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (110,020)	$ 657
Other comprehensive (loss) income, net of applicable taxes:
Foreign currency translation adjustment	(1,836)	(1,171)
Unrealized gain on short-term investments	0	624
Total other comprehensive loss	(1,836)	(547)
Comprehensive (loss) income	$ (111,856)	$ 110