Note 11 - Subsequent Event	9 Months Ended
Sep. 30, 2023
Notes to Financial Statements
Subsequent Events [Text Block]	Note 11 – Subsequent Event On November 9, 2023, we entered into an At-The-Market Offering Agreement with Ladenburg, pursuant to which we may offer and sell, from time to time at our sole discretion, shares of our common stock through Ladenburg as agent and/or principal (subject to the limitations of General Instruction I.B.6 of Form S-3) through an at-the-market program, or the ATM Program. We are not obligated to make any sales under the ATM Program, and as of November 9, 2023, we have not sold any shares under the ATM Program. If we issue a sale notice to Ladenburg, we will designate the maximum amount of shares to be sold by Ladenburg daily and the minimum price per share at which shares may be sold. Ladenburg may sell shares by any method permitted by law deemed to be an “at-the-market offering” as defined in Rule 415(a)(4) under the Securities Act of 1933, as amended, or in privately negotiated transactions. Sales under the ATM Program will be made pursuant to our “shelf” registration statement on Form S-3 (No. 333-261878) filed with the SEC on December 23, 2021, and declared effective on January 3, 2022 and a prospectus supplement related thereto, relating to the issuance and sale of up to approximately $2.05 million of shares of common stock. Either party may suspend the offering under the ATM Program by notice to the other party. The ATM Program will terminate upon the earlier of (i) the sale of all shares subject to the ATM Program or (ii) termination of the ATM Program in accordance with its terms. Either party may terminate the ATM Program at any time upon five business days' prior written notification to the other party in accordance with the related agreement. We agreed to pay Ladenburg a commission of 3% of the gross sales price of any shares sold pursuant to the ATM Program. The rate of compensation will not apply when Ladenburg acts as principal, in which case such rate shall be separately negotiated. We also agreed to reimburse Ladenburg for the fees and disbursements of its counsel in an amount not to exceed $60,000, in addition to certain ongoing disbursements of its legal counsel up to $3,000 per calendar quarter.

Note 11 - Subsequent Event

9 Months Ended

Sep. 30, 2023

Note 11 – Subsequent Event

On November 9, 2023, we entered into an At-The-Market Offering Agreement with Ladenburg, pursuant to which we may offer and sell, from time to time at our sole discretion, shares of our common stock through Ladenburg as agent and/or principal (subject to the limitations of General Instruction I.B.6 of Form S-3) through an at-the-market program, or the ATM Program. We are not obligated to make any sales under the ATM Program, and as of November 9, 2023, we have not sold any shares under the ATM Program. If we issue a sale notice to Ladenburg, we will designate the maximum amount of shares to be sold by Ladenburg daily and the minimum price per share at which shares may be sold. Ladenburg may sell shares by any method permitted by law deemed to be an “at-the-market offering” as defined in Rule 415(a)(4) under the Securities Act of 1933, as amended, or in privately negotiated transactions. Sales under the ATM Program will be made pursuant to our “shelf” registration statement on Form S-3 (No. 333-261878) filed with the SEC on December 23, 2021, and declared effective on January 3, 2022 and a prospectus supplement related thereto, relating to the issuance and sale of up to approximately $2.05 million of shares of common stock.

Either party may suspend the offering under the ATM Program by notice to the other party. The ATM Program will terminate upon the earlier of (i) the sale of all shares subject to the ATM Program or (ii) termination of the ATM Program in accordance with its terms. Either party may terminate the ATM Program at any time upon five business days' prior written notification to the other party in accordance with the related agreement.

We agreed to pay Ladenburg a commission of 3% of the gross sales price of any shares sold pursuant to the ATM Program. The rate of compensation will not apply when Ladenburg acts as principal, in which case such rate shall be separately negotiated. We also agreed to reimburse Ladenburg for the fees and disbursements of its counsel in an amount not to exceed $60,000, in addition to certain ongoing disbursements of its legal counsel up to $3,000 per calendar quarter.