Note 9 - Subsequent Events	6 Months Ended
Jun. 30, 2022
Notes to Financial Statements
Subsequent Events [Text Block]	9. Subsequent Events During July 2022, we issued 75,000 shares of restricted common stock to a consultant and will recognize the related expense of $60,750 over the term of the related agreement. During July 2022, we issued an aggregate of 5,400,000 shares of common stock upon the exercise of the May 2022 Pre-Funded Warrants. Subsequent to these exercises, none of the May 2022 Pre-Funded Warrants remain outstanding. During August 2022, we issued an aggregate of 3,030,304 shares of common stock upon the partial exercise of the May 2022 Preferred Investment Options, with gross cash proceeds to us of $5,000,000. Subsequent to these exercises, 9,090,910 of the May 2022 Preferred Investment Options remain outstanding.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI https://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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