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Note 9 - Notes Payable, Related Parties - Notes Payable, Related Parties (Details) (Parentheticals) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Dec. 31, 2021
May 11, 2023
Apr. 25, 2023
Apr. 11, 2023
Mar. 07, 2023
Mar. 02, 2023
Feb. 01, 2023
Jan. 05, 2023
Dec. 21, 2022
Sep. 29, 2022
Aug. 23, 2022
Dec. 31, 2020
Warrant, shares (in shares)   1,591,250                        
Warrant, exercise price (in dollars per share) $ 2.5 $ 2.47 $ 2.66                     $ 3.99
Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares)       375,000 375,000   312,500       62,500 625,000 625,000  
Warrant, exercise price (in dollars per share)       $ 2.5 $ 2.5           $ 2.6 $ 2.6 $ 2.6  
Warrant, term (Year)       10 years 10 years           10 years 10 years 10 years  
Warrant, redemption price (in dollars per share)                     $ 0.01      
Required volume weighted average sale price (in dollars per share)                     $ 9      
Director [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares)       25,000                    
Warrant, exercise price (in dollars per share)       $ 2.5                    
Warrant, term (Year)       10 years                    
Warrant, redemption price (in dollars per share)       $ 0.01                    
Required volume weighted average sale price (in dollars per share)       $ 9                    
Director [Member] | Notes Payable 1 [Member]                            
Face amount $ 100,000                          
Maturity May 11, 2024                          
Interest rate 8.00%                          
Director [Member] | Notes Payable 1 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 25,000                          
Warrant, exercise price (in dollars per share) $ 2.5                          
Warrant, term (Year) 10 years                          
Warrant, redemption price (in dollars per share) $ 0.01                          
Required volume weighted average sale price (in dollars per share) $ 9                          
Cesar J. Gutierrez Living Trust [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares)         12,500                  
Warrant, exercise price (in dollars per share)         $ 2.5                  
Warrant, term (Year)         10 years                  
Warrant, redemption price (in dollars per share)         $ 0.01                  
Required volume weighted average sale price (in dollars per share)         $ 9                  
Cesar J. Gutierrez Living Trust [Member] | Notes Payable 2 [Member]                            
Face amount $ 50,000                          
Maturity Apr. 25, 2024                          
Interest rate 8.00%                          
Cesar J. Gutierrez Living Trust [Member] | Notes Payable 2 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 12,500                          
Warrant, exercise price (in dollars per share) $ 2.5                          
Warrant, term (Year) 10 years                          
Warrant, redemption price (in dollars per share) $ 0.01                          
Required volume weighted average sale price (in dollars per share) $ 9                          
Cesar J. Gutierrez Living Trust [Member] | Notes Payable 20 [Member]                            
Face amount $ 50,000 $ 50,000 $ 50,000                      
Maturity Dec. 31, 2024 Dec. 31, 2024 Dec. 31, 2024                      
Interest rate 8.00% 8.00% 8.00%                      
Cesar J. Gutierrez Living Trust [Member] | Notes Payable 20 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 7,500 7,500 7,500                      
Warrant, exercise price (in dollars per share) $ 2.21 $ 2.21 $ 2.21                      
Warrant, term (Year) 10 years 10 years 10 years                      
Board of Directors Chairman [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares)         187,500     62,500 125,000          
Warrant, exercise price (in dollars per share)         $ 2.5     $ 2.6 $ 2.6          
Warrant, term (Year)         10 years     10 years 10 years          
Warrant, redemption price (in dollars per share)         $ 0.01     $ 0.01 $ 0.01          
Required volume weighted average sale price (in dollars per share)         $ 9     $ 9 $ 9          
Board of Directors Chairman [Member] | Notes Payable 3 [Member]                            
Face amount $ 750,000                          
Maturity Apr. 25, 2024                          
Interest rate 8.00%                          
Board of Directors Chairman [Member] | Notes Payable 3 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 187,500                          
Warrant, exercise price (in dollars per share) $ 2.5                          
Warrant, term (Year) 10 years                          
Warrant, redemption price (in dollars per share) $ 0.01                          
Required volume weighted average sale price (in dollars per share) $ 9                          
Board of Directors Chairman [Member] | Notes Payable 6 [Member]                            
Face amount $ 250,000                          
Maturity Aug. 23, 2025                          
Interest rate 8.00%                          
Board of Directors Chairman [Member] | Notes Payable 6 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 62,500                          
Warrant, exercise price (in dollars per share) $ 2.6                          
Warrant, term (Year) 10 years                          
Board of Directors Chairman [Member] | Notes Payable 7 [Member]                            
Face amount $ 500,000                          
Maturity Aug. 23, 2025                          
Interest rate 8.00%                          
Board of Directors Chairman [Member] | Notes Payable 7 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 125,000                          
Warrant, exercise price (in dollars per share) $ 2.6                          
Warrant, term (Year) 10 years                          
Board of Directors Chairman [Member] | Notes Payable 10 [Member]                            
Face amount $ 500,000 $ 500,000                        
Maturity Aug. 23, 2025 Aug. 23, 2025                        
Interest rate 8.00% 8.00%                        
Board of Directors Chairman [Member] | Notes Payable 10 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 125,000 125,000                        
Warrant, exercise price (in dollars per share) $ 2.6 $ 2.6                        
Warrant, term (Year) 10 years 10 years                        
Board of Directors Chairman [Member] | Notes Payable 12 [Member]                            
Face amount $ 2,000,000 $ 2,000,000 $ 2,000,000                      
Maturity Apr. 08, 2025 Apr. 08, 2025 Apr. 08, 2025                      
Interest rate 6.00% 6.00% 6.00%                      
Board of Directors Chairman [Member] | Notes Payable 12 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 500,000 500,000 500,000                      
Warrant, exercise price (in dollars per share) $ 2.35 $ 2.35 $ 2.35                      
Warrant, term (Year) 10 years 10 years 10 years                      
Board of Directors Chairman [Member] | Notes Payable 13 [Member]                            
Face amount $ 100,000 $ 100,000 $ 100,000                      
Maturity Apr. 08, 2025 Apr. 08, 2025 Apr. 08, 2025                      
Interest rate 6.00% 6.00% 6.00%                      
Board of Directors Chairman [Member] | Notes Payable 13 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 25,000 25,000 25,000                      
Warrant, exercise price (in dollars per share) $ 2.35 $ 2.35 $ 2.35                      
Warrant, term (Year) 10 years 10 years 10 years                      
Board of Directors Chairman [Member] | Notes Payable 17 [Member]                            
Face amount $ 1,500,000 $ 1,500,000 $ 1,500,000                      
Maturity Dec. 31, 2024 Dec. 31, 2024 Dec. 31, 2024                      
Interest rate 8.00% 8.00% 8.00%                      
Board of Directors Chairman [Member] | Notes Payable 17 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 225,000 225,000 225,000                      
Warrant, exercise price (in dollars per share) $ 2.21 $ 2.21 $ 2.21                      
Warrant, term (Year) 10 years 10 years 10 years                      
Lyle A. Berman Revocable Trust [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares)           62,500 62,500     62,500        
Warrant, exercise price (in dollars per share)           $ 2.6 $ 2.6     $ 2.6        
Warrant, term (Year)           10 years 10 years     10 years        
Warrant, redemption price (in dollars per share)           $ 0.01 $ 0.01     $ 0.01        
Required volume weighted average sale price (in dollars per share)           $ 9 $ 9     $ 9        
Lyle A. Berman Revocable Trust [Member] | Notes Payable 4 [Member]                            
Face amount $ 250,000                          
Maturity Aug. 23, 2025                          
Interest rate 8.00%                          
Lyle A. Berman Revocable Trust [Member] | Notes Payable 4 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 62,500                          
Warrant, exercise price (in dollars per share) $ 2.6                          
Warrant, term (Year) 10 years                          
Lyle A. Berman Revocable Trust [Member] | Notes Payable 5 [Member]                            
Face amount $ 250,000                          
Maturity Aug. 23, 2025                          
Interest rate 8.00%                          
Lyle A. Berman Revocable Trust [Member] | Notes Payable 5 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 62,500                          
Warrant, exercise price (in dollars per share) $ 2.6                          
Warrant, term (Year) 10 years                          
Lyle A. Berman Revocable Trust [Member] | Notes Payable 8 [Member]                            
Face amount $ 250,000                          
Maturity Aug. 23, 2025                          
Interest rate 8.00%                          
Lyle A. Berman Revocable Trust [Member] | Notes Payable 8 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 62,500                          
Warrant, exercise price (in dollars per share) $ 2.6                          
Warrant, term (Year) 10 years                          
Lyle A. Berman Revocable Trust [Member] | Notes Payable 9 [Member]                            
Face amount $ 250,000 $ 250,000                        
Maturity Aug. 23, 2025 Aug. 23, 2025                        
Interest rate 8.00% 8.00%                        
Lyle A. Berman Revocable Trust [Member] | Notes Payable 9 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 62,500 62,500                        
Warrant, exercise price (in dollars per share) $ 2.6 $ 2.6                        
Warrant, term (Year) 10 years 10 years                        
Lyle A. Berman Revocable Trust [Member] | Notes Payable 11 [Member]                            
Face amount $ 250,000 $ 250,000                        
Maturity Aug. 23, 2025 Aug. 23, 2025                        
Interest rate 8.00% 8.00%                        
Lyle A. Berman Revocable Trust [Member] | Notes Payable 11 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 62,500 62,500                        
Warrant, exercise price (in dollars per share) $ 2.6 $ 2.6                        
Warrant, term (Year) 10 years 10 years                        
Lyle A. Berman Revocable Trust [Member] | Notes Payable 16 [Member]                            
Face amount $ 920,000 $ 920,000 $ 920,000                      
Maturity Apr. 08, 2025 Apr. 08, 2025 Apr. 08, 2025                      
Interest rate 6.00% 6.00% 6.00%                      
Lyle A. Berman Revocable Trust [Member] | Notes Payable 16 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 230,000 230,000 230,000                      
Warrant, exercise price (in dollars per share) $ 2.35 $ 2.35 $ 2.35                      
Warrant, term (Year) 10 years 10 years 10 years                      
Lyle A. Berman Revocable Trust [Member] | Notes Payable 18 [Member]                            
Face amount $ 500,000 $ 500,000 $ 500,000                      
Maturity Dec. 31, 2024 Dec. 31, 2024 Dec. 31, 2024                      
Interest rate 8.00% 8.00% 8.00%                      
Lyle A. Berman Revocable Trust [Member] | Notes Payable 18 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 75,000 75,000 75,000                      
Warrant, exercise price (in dollars per share) $ 2.21 $ 2.21 $ 2.21                      
Warrant, term (Year) 10 years 10 years 10 years                      
IG Union Bower LLC [Member] | Notes Payable 14 [Member]                            
Face amount $ 100,000 $ 100,000 $ 100,000                      
Maturity Apr. 08, 2025 Apr. 08, 2025 Apr. 08, 2025                      
Interest rate 6.00% 6.00% 6.00%                      
IG Union Bower LLC [Member] | Notes Payable 14 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 25,000 25,000 25,000                      
Warrant, exercise price (in dollars per share) $ 2.35 $ 2.35 $ 2.35                      
Warrant, term (Year) 10 years 10 years 10 years                      
Former CFO [Member] | Notes Payable 19 [Member]                            
Face amount $ 25,000 $ 25,000 $ 25,000                      
Maturity Dec. 31, 2024 Dec. 31, 2024 Dec. 31, 2024                      
Interest rate 8.00% 8.00% 8.00%                      
Former CFO [Member] | Notes Payable 19 [Member] | Warrants Issued With Promissory Notes [Member]                            
Warrant, shares (in shares) 3,750 3,750 3,750                      
Warrant, exercise price (in dollars per share) $ 2.21 $ 2.21 $ 2.21                      
Warrant, term (Year) 10 years 10 years 10 years