v3.25.4
Note 2 - Convertible Notes Payable (Tables)
9 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
      

Weighted-Average

 
      

Exercise Price

 
  

Warrants

  

Per Share

 
         

Outstanding and exercisable, March 31, 2025

  25,003  $20.00 
         

Outstanding and exercisable, December 31, 2025

  25,003  $20.00