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Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (284,232)	$ (293,654)	$ (290,023)
Other comprehensive income (loss):
Foreign currency translation adjustments	(3,712)	75	1,235
Available-for-sale investments:
Unrealized gain (loss) on investments, net of tax effect	2,557	(1,632)	(899)
Other comprehensive gain (loss), net of taxes	(1,155)	(1,557)	336
Comprehensive loss	$ (285,387)	$ (295,211)	$ (289,687)

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