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Note 2 - Significant Accounting Policies - Antidilutive Securities (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Antidilutive securities (in shares)	17,107,636	385,274	17,107,636	385,274
Common Stock Warrants [Member]
Antidilutive securities (in shares)	2,000,000	0	2,000,000	0
Placement Agent Warrants [Member]
Antidilutive securities (in shares)	80,000	0	80,000	0
Series A Warrants [Member]
Antidilutive securities (in shares)	14,450,069	0	14,450,069	0
Unvested Common Stock Grants [Member]
Antidilutive securities (in shares)	577,567	385,274	577,567	385,274

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

+ Details

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