Fair Value Measurements - Changes In Fair Values of Convertible Preferred Stock Warrants and Common Stock Warrants, Classified as Level 3 Financial Liabilities (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($)
Fair Value Disclosures [Abstract]
Beginning balance	$ 314
Change in fair value	(8)
Ending balance	$ 306

Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration