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Note 3 - Stockholders' Deficit (Details Textual)
 3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Mar. 31, 2020
USD ($)
Dec. 31, 2020
$ / shares
shares
Preferred Stock, Shares Authorized (in shares) 5,000,000   5,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.001   $ 0.001
Common Stock, Shares Authorized (in shares) 100,000,000   100,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.001   $ 0.001
Convertible Liability, Original Amount | $ $ 180,000    
Conversion of Convertible Liability, Shares Issued (in shares) 92,308    
Convertible Liability, Conversion Price (in dollars per share) | $ / shares $ 1.95    
Proceeds from Issuance of Common Stock | $ $ 150,506  
Stock Issued During Period, Shares, Previously Subscribed Shares (in shares) 6,411    
Stock Issued During Period, Value, Previously Subscribed Shares | $    
Common Stock, Subscribed [Member]      
Stock Issued During Period, Value, Previously Subscribed Shares | $ $ (12,500)    
Issuance of Common Stock 1 [Member]      
Stock Issued During Period, Shares, New Issues (in shares) 70,772    
Proceeds from Issuance of Common Stock | $ $ 138,006    
Total Preferred Stock [Member]      
Preferred Stock, Shares Authorized (in shares) 10,000,000    
Series A Preferred Stock [Member]      
Preferred Stock, Shares Authorized (in shares) 5,000,000   5,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.001   $ 0.001
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) 1    
Preferred Stock, Number of Votes Per Share 100