Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Consolidated Statements of Comprehensive Loss [Abstract]
Net loss	$ (34,525)	$ (25,040)	$ (74,704)	$ (49,704)
Other comprehensive loss
Net unrealized gain (loss) on investments	(6)	304	(39)	209
Total comprehensive loss	$ (34,531)	$ (24,736)	$ (74,743)	$ (49,495)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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