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Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Payments of stock issuance costs	$ 800
Common Stock And Warrants
Payments of stock issuance costs	813	$ 7,507
Series D Convertible Preferred Stock
Discount of issuance of common stock, preferred stock and warrants for clinical trial funding commitment	$ 0	$ 488

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- Definition

Discount of Issuance of Common Stock, Preferred Stock and Warrants for Clinical Trial Funding Commitment

+ References

No definition available.

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- Definition

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

+ References

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 http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

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