Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity Deficit (Parenthetical) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Series A Redeemable Convertible Preferred Stock
Stock issuance costs		$ 4	$ 200
Series B Redeemable Convertible Preferred Stock
Stock issuance costs	$ 200	$ 226

The cash outflow for cost incurred directly with the issuance of an equity security.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

Name:	us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration