Quarterly report pursuant to Section 13 or 15(d)

Note 13 - Subsequent Event (Details Textual)

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Note 13 - Subsequent Event (Details Textual) - USD ($)
 3 Months Ended 12 Months Ended 16 Months Ended
Apr. 29, 2024
Apr. 01, 2024
Jan. 01, 2024
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Mar. 31, 2024
May 25, 2023
Dec. 31, 2022
Nasdaq Listing Rule, minimum requirement for stockholders' equity           $ 2,500,000      
Positive shareholder's equity       $ 137,000 $ 25,993,000 $ (2,901,000) $ 137,000   $ 37,741,000
Net income from continued operations       500,000          
Minimum market value of listed securities       35,000,000          
Rice Amendment [Member]                  
Increase on annual base salary     $ 648,960            
Bejar Amendment [Member]                  
Increase on annual base salary     509,600            
Payne Amendment [Member]                  
Increase on annual base salary     $ 479,440            
Subsequent Event [Member] | Rice Amendment [Member]                  
Annual bonus 55.00%                
Annual automobile allowance $ 18,000                
Keystone [Member] | Subsequent Event [Member]                  
Common shares issued   510,101              
Shares issued, price per share   $ 1.36              
Issuance of common shares   $ 694,000              
The 2022 Atm Offering [Member]                  
Common shares issued         3,095        
Shares issued, price per share         $ 11.32        
Issuance of common shares       $ 0 $ 34,000   1,900,000    
Proceeds from Issuance of Common Stock, Gross         $ 35,000   $ 1,900,000    
The 2022 Atm Offering [Member] | Subsequent Event [Member]                  
Common shares issued   81,591              
Shares issued, price per share   $ 1.22              
Issuance of common shares   $ 97,000              
Proceeds from Issuance of Common Stock, Gross   $ 100,000              
2023 Committed Equity Facility [Member]                  
Common shares issued           720,494      
Shares issued, price per share           $ 2.91      
Issuance of common shares           $ 2,100,000      
Percentage of common shares outstanding.   19.99%           19.99%