Number of warrants or rights issued during period.

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- Definition

Purchase price per share or per unit of warrants or rights.

+ References

No definition available.

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- Definition

The cash inflow from issuance of rights to purchase common shares and warrants.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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- Definition

Face amount or stated value per share of common stock.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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-Paragraph 14
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- Definition

Number of new stock issued during the period.

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- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

No definition available.

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Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Note 13 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		2 Months Ended	12 Months Ended
	Mar. 31, 2022	Mar. 15, 2022	Dec. 31, 2021	Jan. 31, 2022	Dec. 31, 2020	Sep. 04, 2020
Common Stock, Par or Stated Value Per Share (in dollars per share)			$ 0.0001		$ 0.0001	$ 0.0001
Forecast [Member]
Proceeds from Warrant Exercises	$ 9,400
At-the-market Offering [Member]
Stock Issued During Period, Value, New Issues			$ 9,767
Subsequent Event [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share)				$ 0.0001
Proceeds from Issuance of Common Stock and Warrants, Net	$ 9,300
Subsequent Event [Member] \| At-the-market Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)		54,763
Stock Issued During Period, Value, New Issues		$ 100
Subsequent Event [Member] \| Registered Direct Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	3,185,216
Subsequent Event [Member] \| Pre-funded Warrants [Member]
Class of Warrant or Right, Issued During Period (in shares)	1,665,025
Subsequent Event [Member] \| Pre-funded Warrants [Member] \| Eshelman Ventures [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)				4,545,455
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 2.20
Warrants and Rights Outstanding				$ 10,000
Subsequent Event [Member] \| Pre-funded Warrants [Member] \| Institutional Investor [Member]
Class of Warrant or Right, Purchase Price of Warrants or Rights (in dollars per share)	$ 2.004
Subsequent Event [Member] \| Common Stock Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	4,850,241
Subsequent Event [Member] \| Common Stock Warrants [Member] \| Eshelman Ventures [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 2.20
Class of Warrant or Right, Purchase Price of Warrants or Rights (in dollars per share)	$ 2.325
Warrants and Rights Outstanding, Term (Year)	5 years
Subsequent Event [Member] \| Common Stock Warrants [Member] \| Institutional Investor [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 1.88
Class of Warrant or Right, Purchase Price of Warrants or Rights (in dollars per share)	$ 2.005
Warrants and Rights Outstanding, Term (Year)	5 years