Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Stock-based Compensation (Details Textual)

v3.22.0.1
Note 5 - Stock-based Compensation (Details Textual) - USD ($)
3 Months Ended
Jan. 12, 2023
Jul. 12, 2022
Jan. 12, 2022
Oct. 01, 2021
Sep. 27, 2021
Jul. 30, 2021
Oct. 14, 2020
Dec. 31, 2021
Dec. 31, 2020
Jun. 18, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)               250,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)               0 0  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total               $ 106,000    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)               2 years 3 months 29 days    
Restricted Stock [Member]                    
Share-based Payment Arrangement, Expense               $ 10,000 $ 0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)               0 50,000  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)               75,000 (0)  
Consultants [Member] | Restricted Stock [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)         300,000   50,000      
Employee [Member] | Restricted Stock [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)           150,000        
Employee [Member] | Restricted Stock [Member] | Forecast [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) 50,000 50,000                
Employee [Member] | Restricted Stock [Member] | Subsequent Event [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)     50,000              
The 2013 Plan [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)       34,114,256           31,114,256
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)       3,000,000            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)               4,818,356    
Share-based Payment Arrangement, Expense               $ 142,000 $ 86,000  
The 2013 Plan [Member] | Research and Development Expense [Member]                    
Share-based Payment Arrangement, Expense               53,000 26,000  
The 2013 Plan [Member] | General and Administrative Expense [Member]                    
Share-based Payment Arrangement, Expense               $ 89,000 $ 60,000  
The 2013 Plan [Member] | Employees and Directors [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)               250,000    
The 2013 Plan [Member] | Consultants [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)               0