Note 13 - Subsequent Events	9 Months Ended
Sep. 30, 2023
Notes to Financial Statements
Subsequent Events [Text Block]	*Note 13.* Subsequent Events. Management has evaluated subsequent events through the date of the filing of this quarterly report and management noted the following for disclosure. Lincoln Park Capital Purchase of Shares** From October 1, 2023, through November 13, 2023, we sold 873,788 shares of common stock to Lincoln Park pursuant to the 2022 LPC Purchase Agreement (see Note 3) and received $142,000 in gross and net proceeds. These sales were registered with the SEC on Form S-1 (file number 333-268973).

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
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration