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Note 5 - Stockholders' Equity (Details Textual)
6 Months Ended
Sep. 01, 2021
$ / shares
shares
Feb. 05, 2021
$ / shares
shares
Dec. 15, 2020
USD ($)
$ / shares
shares
Aug. 12, 2020
$ / shares
shares
Jun. 30, 2022
USD ($)
$ / shares
Jun. 30, 2021
USD ($)
Dec. 31, 2021
$ / shares
Oct. 05, 2018
$ / shares
shares
Aug. 21, 2018
USD ($)
$ / shares
shares
Warrants and Rights Outstanding, Reduction of Revenue During Period | $         $ 17,970 $ 17,970      
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.001   $ 0.01   $ 0.01    
Measurement Input, Risk Free Interest Rate [Member]                  
Warrants and Rights Outstanding, Measurement Input                 0.0277
Measurement Input, Expected Term [Member]                  
Warrants and Rights Outstanding, Measurement Input                 5
Measurement Input, Expected Dividend Rate [Member]                  
Warrants and Rights Outstanding, Measurement Input                 0
Measurement Input, Price Volatility [Member]                  
Warrants and Rights Outstanding, Measurement Input                 0.646
Common Stock Warrants [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                 150,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 5.97 $ 5.88   $ 3.46          
Warrants and Rights Outstanding | $                 $ 135,764
Stock Issued During Period, Shares, Warrants Exercised (in shares) 19,950 19,795   27,051          
Class of Warrant or Right, Number of Warrants Exercised (in shares) 30,000 30,000   60,000          
Common Stock Warrants, Tranche One [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                 30,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares               $ 1.80  
Common Stock Warrants, Tranche One [Member] | Measurement Input, Share Price [Member]                  
Warrants and Rights Outstanding, Measurement Input                 0.94
Common Stock Warrants, Tranche Two through Five [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)               120,000 120,000
Warrants and Rights Outstanding, Term (Year)                 4 years
Class of Warrant or Right, Exercise Price of Warrants or Rights, Maximum Percentage of Market Price of Common Stock                 120.00%
Common Stock Warrants, Tranche Two through Five [Member] | Measurement Input, Share Price [Member]                  
Warrants and Rights Outstanding, Measurement Input                 0.90
Common Stock Warrants, Tranche Two through Five [Member] | Maximum [Member]                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                 $ 2.00
Common Stock Warrants, Tranche Two [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                 30,000
Warrants Issued to Acquire Information Management Solutions, LLC [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     945,599            
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 4.23            
Warrants and Rights Outstanding | $     $ 552,283            
Class of Warrant or Right, Issued During Period (in shares)     945,599            
Class of Warrant or Right, Vesting Period (Year)     3 years            
Class of Warrant or Right, Term Following Vesting (Year)     5 years            
Warrants Issued to Acquire Information Management Solutions, LLC [Member] | Measurement Input, Share Price [Member]                  
Warrants and Rights Outstanding, Measurement Input     0.58            
Warrants Issued to Acquire Information Management Solutions, LLC [Member] | Measurement Input, Risk Free Interest Rate [Member]                  
Warrants and Rights Outstanding, Measurement Input     0.0009            
Warrants Issued to Acquire Information Management Solutions, LLC [Member] | Measurement Input, Expected Term [Member]                  
Warrants and Rights Outstanding, Measurement Input     5            
Warrants Issued to Acquire Information Management Solutions, LLC [Member] | Measurement Input, Expected Dividend Rate [Member]                  
Warrants and Rights Outstanding, Measurement Input     0            
Warrants Issued to Acquire Information Management Solutions, LLC [Member] | Measurement Input, Price Volatility [Member]                  
Warrants and Rights Outstanding, Measurement Input     0.599