v3.25.2
Note 3 - Convertible Notes Payable (Tables)
12 Months Ended
Mar. 31, 2025
Notes Tables  
Convertible Debt [Table Text Block]
  

Principal Amount

  

Amortized Debt Discount

  

Net Carrying

Amount

 
             

Outstanding, March 31, 2024

 $1,330  $(328) $1,002 

Amortization of debt discount

     175   175 

Issuance of common stock for extinguishment of convertible debt

  (1,330)  153   (1,177)

Outstanding, March 31, 2025

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

Warrants

  

Weighted-Average Exercise Price Per Share

  

Remaining Life (In Years)

  

Aggregate Intrinsic Value*

 
                 

Outstanding and exercisable, March 31, 2024

  25,003  $20.00   4.48  $1,010,000 

Granted

            

Exercised

            

Forfeited/Cancelled

            

Expired

            

Outstanding, March 31, 2025

  25,003  $20.00   3.48  $ 
                 

Exercisable, March 31, 2025

  25,003  $20.00   3.48  $