Note 5 - Stockholders' Equity (Details Textual) - $ / shares	1 Months Ended	6 Months Ended
Mar. 31, 2023	Jun. 30, 2023
Stock Issued During Period, Shares, Issued for Services	108,696
Class of Warrant or Right, Outstanding		13,384,115
Class Of Warrant Or Right Outstanding Weighted Average Exercise Price		$ 2.77
Warrants and Rights Outstanding, Term		4 years
Stock Incentive Plan 2020 [Member]
Common Stock, Capital Shares Reserved for Future Issuance		2,075,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period		36,667
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number		2,022,133
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price		$ 1.90
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term		8 years 8 months 12 days

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Number of warrants or rights outstanding.

+ References

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Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
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-Topic 718
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-Publisher FASB
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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