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Note 4 - Related Party - Summary of Stock Sales by Related Parties (Details) - USD ($)
9 Months Ended 12 Months Ended
Jul. 02, 2021
Feb. 05, 2021
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Amount     $ 3,675,000 $ 0 $ 0 $ 5,562,511
Ira and Claudia Goldfarb [Member]            
Shares (in shares) 58,824          
Amount $ 250,000          
Brad Burke [Member]            
Shares (in shares) 5,882 12,500        
Amount $ 25,000 $ 50,000        
Lyle Berman Revocable Trust [Member]            
Shares (in shares) 117,647 100,000        
Amount $ 500,000 $ 400,000        
Bradley Berman [Member]            
Shares (in shares) 12,500 12,500        
Amount $ 53,125 $ 50,000        
Christopher and Linda Ludeman [Member]            
Shares (in shares) 47,058 50,000        
Amount $ 200,000 $ 200,000        
Creed Revocable Living Trust [Member]            
Shares (in shares) 30,000 50,000        
Amount $ 127,500 $ 200,000        
Related Parties [Member]            
Shares (in shares) 271,911 225,000        
Amount $ 1,155,625 $ 900,000