v3.26.1
Note 3 - Marketable Securities (Tables)
3 Months Ended
May 31, 2026
Notes Tables  
Debt Securities, Available-for-Sale [Table Text Block]
       
   

May 31, 2026

 
   

Total

   

Level 1

   

Level 2

   

Level 3

 
                                 

U.S. Treasury and other government securities

  $ 8,926     $ 8,926     $ -     $ -  

Total marketable securities

  $ 8,926     $ 8,926     $ -     $ -  
                                 
       
   

March 1, 2026

 
   

Total

   

Level 1

   

Level 2

   

Level 3

 
                                 

U.S. Treasury and other government securities

  $ 10,874     $ 10,874     $ -     $ -  

Total marketable securities

  $ 10,874     $ 10,874     $ -     $ -  
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
   

Amortized Cost

Basis

   

Gross

Unrealized

Gains

   

Gross

Unrealized

Losses

 
                         

May 31, 2026:

                       

U.S. Treasury and other government securities

  $ 8,976     $ -     $ 50  

Total marketable securities

  $ 8,976     $ -     $ 50  
                         

March 1, 2026:

                       

U.S. Treasury and other government securities

  $ 10,964     $ 2     $ 92  

Total marketable securities

  $ 10,964     $ 2     $ 92  
Investments Classified by Contractual Maturity Date [Table Text Block]

Due in one year or less

  $ 8,926