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Note I - Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
  

Warrant shares outstanding

  

Weighted Average exercise price

  

Weighted Average remaining life

  

Intrinsic value

 

Outstanding and exercisable at January 1, 2021

  6,369,396   1.97   2.48  $2,784,117 

Issued

  -   -   -   - 

Exercised

  (2,101,175)  1.50   -   4,231,079 

Expired or cancelled

     -   -   - 

Outstanding and exercisable at December 31, 2021

  4,268,221  $2.18  $1.50  $1,187,546 
Deferred Compensation Arrangement with Individual, Share-based Payments [Table Text Block]
  

December 31, 2021

  

December 31, 2020

 
         

Shares-to-be-issued, outstanding January 1, 2021 and 2020, respectively

  2,428,329   2,375,760 

Granted in current period

  93,918   642,667 

Issued in current period

  (455,904)  (590,098)

Shares-to be issued outstanding December 31, 2021 and 2020, respectively

  2,066,343   2,428,329