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Note 2 - Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
  

For the Three Months Ended March 31,

 
  

2023

  

2022

 
         

Common Stock Warrants

  2,000,000   2,000,000 

Placement Agent Warrants

  80,000   80,000 

Series A Warrants

  14,450,069   14,450,069 

Unvested Common Stock Grants

  1,239,935   568,319 

Total potentially dilutive shares

  17,770,004   17,098,388