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Note 1 - Nature of Operations, Principles of Consolidation and Basis of Presentation of Interim Financial Statements (Tables)
6 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
  

Three Months Ended

  

Six Months Ended

 
  

December 31,

  

December 31,

 
  

2022

  

2021

  

2022

  

2021

 
                 

Anti-dilutive stock options

  4,597,283   115,000   4,597,283   115,000 

Total anti-dilutive shares

  4,597,283   115,000   4,597,283   115,000