CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (55,630)	$ (25,800)
Other comprehensive (loss) income, net of tax:
Change in unrealized gains related to marketable securities	(112)	(172)
Foreign currency translation adjustments	146	5
Total other comprehensive income (loss)	34	(167)
Comprehensive loss	$ (55,596)	$ (25,967)