Note 8 - Warrants	9 Months Ended
Sep. 30, 2020
Notes to Financial Statements
Warrants Disclosure [Text Block]	8. Warrants *Loan Agreement Warrants* In connection with the Loan Agreement, on May 30, 2019, the Company issued warrants to the Lender and its affiliates, which are exercisable for an aggregate of 176,679 shares of the Company’s common stock with a per share exercise price of $2.83, or the Warrants. As of September 30, 2020, warrants to purchase 176,679 shares of common stock issued to the Lender and its affiliates had not been exercised and were still outstanding. These warrants expire in May 2029.

Note 8 - Warrants

9 Months Ended

Sep. 30, 2020

8. Warrants

Loan Agreement Warrants

In connection with the Loan Agreement, on May 30, 2019, the Company issued warrants to the Lender and its affiliates, which are exercisable for an aggregate of 176,679 shares of the Company’s common stock with a per share exercise price of $2.83, or the Warrants. As of September 30, 2020, warrants to purchase 176,679 shares of common stock issued to the Lender and its affiliates had not been exercised and were still outstanding. These warrants expire in May 2029.