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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

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

+ References

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Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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Note 8 - Warrants (Details Textual) $ / shares in Units, $ in Thousands	Mar. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($)	Dec. 29, 2022	Dec. 27, 2022 shares
Warrants and Rights Outstanding \| $	$ 1,787	$ 7,098
Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input	3.58
The 2022 Prefunded Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares				2,632,898
Common Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares				4,227,052
Warrants and Rights Outstanding \| $	$ 1,800
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 2.07
Warrants and Rights Outstanding, Measurement Input	0.658
Common Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input	97.06
December 2022 Financing [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input			6
December 2022 Financing [Member] \| Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input			0