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Note P - Equity (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Warrants Valuation Assumptions [Table Text Block]
   

Years ended

December 31,

 
   

2022

   

2021

 

Weighted average risk-free interest rate

    3.70

%

    -

%

Weighted average exercise price

  $ 3.00     $ -  

Weighted average exercise period

    5       -  

Weighted average Volatility of stock price

    108.60

%

    -

%

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   

Total

Warrants

   

Weighted

average

exercise

price

   

Weighted

average

remaining

life

(in years)

   

Aggregate

intrinsic

value

 
                                 

Outstanding, as of December 31, 2020

    4,689,387     $ 6.04       4.48        

Granted

                           

Exercised

                           

Forfeited

                           

Expired

                           

Outstanding, as of December 31, 2021

    4,689,387       6.04       3.48        

Granted

    200,000       3.00                  

Exercised

         

                 

Forfeited

                           

Expired

    (17,362 )    

28.80

                 

Outstanding, as of December 31, 2022

    4,872,025     $ 5.83       2.59