Note 10 - Subsequent Events	6 Months Ended
Jun. 30, 2023
Notes to Financial Statements
Subsequent Events [Text Block]	*Note 10.* Subsequent Events** On July 12, 2023, the Company convened its 2023 annual meeting of stockholders at which stockholders approved the proposed 2023 Employee Stock Purchase Plan, or ESPP, which gives certain employees of the Company (including certain employees of subsidiaries) an opportunity to purchase shares of the Company's common stock through the ESPP. The offering of the securities was registered under the Securities Act of 1933, as amended, through the filing of a registration statement on Form S-8 with the Commission on July 24, 2023.

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

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