Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Significant Accounting Policies and Basis of Presentation (Details Textual)

v3.19.3
Note 2 - Significant Accounting Policies and Basis of Presentation (Details Textual) - USD ($)
$ / shares in Units, shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Jul. 31, 2019
Jan. 01, 2019
Cost Reimbursements from SBIR Grant as Offset to Research and Development Expenses   $ 382,000 $ 318,000    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   7.3 0.5    
Asset Impairment Charges, Total $ 0 $ 0 $ 0    
Operating Lease, Right-of-Use Asset 204,300 204,300      
Operating Lease, Liability, Total $ 183,520 $ 183,520      
Accounting Standards Update 2016-02 [Member]          
Operating Lease, Right-of-Use Asset         $ 53,000
Operating Lease, Liability, Total         $ 75,700
Underwritten Public Offering [Member] | Prefunded Warrants [Member]          
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.0001