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Note 4 - Related Party (Details Textual)
3 Months Ended 9 Months Ended 12 Months Ended
Aug. 30, 2023
USD ($)
$ / shares
shares
Jun. 01, 2023
USD ($)
shares
May 11, 2023
USD ($)
$ / shares
shares
Apr. 25, 2023
USD ($)
$ / shares
shares
Mar. 02, 2023
USD ($)
$ / shares
shares
Feb. 01, 2023
USD ($)
$ / shares
shares
Dec. 21, 2022
USD ($)
$ / shares
shares
Sep. 29, 2022
USD ($)
$ / shares
shares
Aug. 23, 2022
USD ($)
$ / shares
shares
Aug. 23, 2022
USD ($)
$ / shares
shares
Apr. 08, 2022
USD ($)
$ / shares
shares
Jul. 07, 2021
USD ($)
shares
Feb. 05, 2021
USD ($)
shares
Sep. 30, 2023
USD ($)
ft²
$ / shares
Apr. 11, 2023
USD ($)
Sep. 30, 2023
USD ($)
ft²
$ / shares
Dec. 31, 2022
USD ($)
ft²
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Mar. 07, 2023
shares
Dec. 31, 2020
$ / shares
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                                 1,591,250      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                           $ 2.5   $ 2.5 $ 2.47 $ 2.66   $ 3.99
Proceeds from Issuance or Sale of Equity | $                           $ 3,675,000            
Facility in Irving, Texas [Member]                                        
Area of Real Estate Property (Square Foot) | ft²                           20,945   20,945 20,945      
Lessor, Operating Lease, Renewal Term (Year)                           5 years   5 years 5 years      
Operating Lease, Monthly Rate | $                               $ 10,036 $ 10,036      
Operating Lease, Annual Escalation of Payments, Percent                               3.00% 3.00%      
Private Placement [Member]                                        
Proceeds from Issuance or Sale of Equity | $ $ 3,674,926                     $ 3,000,000 $ 2,500,000              
Stock Issued During Period, Shares, New Issues (in shares) 735,000                     714,701 631,250              
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 5                                      
Warrants Issued With Promissory Notes [Member]                                        
Proceeds from Issuance of Debt | $             $ 250,000                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     375,000 375,000     62,500 625,000 625,000 625,000                 312,500  
Warrants and Rights Outstanding, Term (Year)     10 years 10 years     10 years 10 years 10 years 10 years                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 2.5 $ 2.5     $ 2.6 $ 2.6 $ 2.6 $ 2.6                    
Class of Warrant or Right, Number Per $100,000 Notes Payable (in shares)     25,000 25,000     25,000 25,000 25,000 25,000                    
Director [Member] | Warrants Issued With Promissory Notes [Member]                                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     25,000                                  
Warrants and Rights Outstanding, Term (Year)     10 years                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 2.5                                  
Class of Warrant or Right, Number Per $100,000 Notes Payable (in shares)     25,000                                  
Board of Directors Chairman [Member] | Warrants Issued With Promissory Notes [Member]                                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       187,500 62,500 125,000                            
Warrants and Rights Outstanding, Term (Year)       10 years 10 years 10 years                            
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 2.5 $ 2.6 $ 2.6                            
Class of Warrant or Right, Number Per $100,000 Notes Payable (in shares)       25,000 25,000 25,000                            
Cesar J. Gutierrez Living Trust [Member] | Warrants Issued With Promissory Notes [Member]                                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       12,500                                
Warrants and Rights Outstanding, Term (Year)       10 years                                
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 2.5                                
Class of Warrant or Right, Number Per $100,000 Notes Payable (in shares)       25,000                                
Five Nonemployee Directors [Member]                                        
Stock Issued During Period, Shares, Issued for Services (in shares)   20,699                                    
Stock Issued During Period, Value, Issued for Services | $   $ 125,229                                    
Promissory Notes and Warrants [Member]                                        
Proceeds from Issuance of Debt | $     $ 1,500,000 $ 1,500,000       $ 2,500,000 $ 2,500,000 $ 2,500,000 $ 3,700,000             $ 2,075,000    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                 625,000 625,000 925,000             311,250    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                 $ 2.6 $ 2.6 $ 2.35             $ 2.21    
Debt Instrument, Interest Rate, Stated Percentage     8.00% 8.00%       8.00% 8.00% 8.00%                    
Debt Instrument, Maturity Date     May 11, 2024 Apr. 25, 2024         Aug. 23, 2025 Aug. 23, 2025                    
Promissory Notes and Warrants [Member] | Director [Member]                                        
Proceeds from Issuance of Debt | $     $ 100,000                                  
Promissory Notes and Warrants [Member] | Board of Directors Chairman [Member]                                        
Proceeds from Issuance of Debt | $       $ 750,000 $ 250,000 $ 500,000                            
Promissory Notes and Warrants [Member] | Cesar J. Gutierrez Living Trust [Member]                                        
Proceeds from Issuance of Debt | $       $ 50,000                                
Promissory Notes and Warrants [Member] | Two Directors [Member]                                        
Proceeds from Issuance of Debt | $                             $ 2,500,000