CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Net loss	$ (126,247)	$ (67,159)	$ (43,910)
Foreign currency:
Comprehensive income (loss)	4	(226)	(21)
Marketable securities:
Comprehensive income (loss)	(1,813)	(109)	374
Adjustments for net (losses) income realized in net loss	1,031	223	(17)
Other comprehensive loss	(782)	114	357
Total other comprehensive (loss) income	(778)	(112)	336
Total comprehensive loss	$ (127,025)	$ (67,271)	$ (43,574)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration