Quarterly report pursuant to Section 13 or 15(d)

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

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Note 2 - Significant Accounting Policies and Basis of Presentation (Details Textual) - USD ($)
3 Months Ended
Jan. 01, 2018
Mar. 31, 2019
Mar. 31, 2018
Jan. 01, 2019
Cost Reimbursements from SBIR Grant as Offset to Research and Development Expenses   $ 95,000 $ 84,000  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   13.5 9.5  
Lessee, Operating Lease, Liability, Payments, Due, Total   $ 49,600    
Operating Lease, Payments $ 29,800      
Lessee, Operating Lease, Discount Rate   12.75%    
Operating Leases, Rent Expense, Net, Total   $ 47,300 $ 47,100  
Operating Leases, Rent Expense, Sublease Rentals   62,200    
Sublease Income   24,200    
Accounting Standards Update 2016-02 [Member]        
Operating Lease, Right-of-Use Asset       $ 53,000
Operating Lease, Liability, Total       $ 75,700
Short-term Leases [Member]        
Operating Leases, Rent Expense, Net, Total   16,900    
Other Noncurrent Assets [Member]        
Operating Lease, Right-of-Use Asset   33,900    
Other Current Liabilities [Member]        
Operating Lease, Liability, Total   $ 48,100    
Minimum [Member]        
Lessee, Operating Lease, Term of Contract   1 year