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Note 3 - Marketable Securities (Tables)
3 Months Ended
Jun. 01, 2025
Notes Tables  
Debt Securities, Available-for-Sale [Table Text Block]
   

June 1, 2025

 
   

Total

   

Level 1

   

Level 2

   

Level 3

 
                                 

U.S. Treasury and other government securities

  $ 44,947     $ 44,947     $ -     $ -  

Total marketable securities

  $ 44,947     $ 44,947     $ -     $ -  
   

March 2, 2025

 
   

Total

   

Level 1

   

Level 2

   

Level 3

 
                                 

U.S. Treasury and other government securities

  $ 47,213     $ 47,213     $ -     $ -  

Total marketable securities

  $ 47,213     $ 47,213     $ -     $ -  
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
   

Amortized Cost

Basis

   

Gross

Unrealized

Gains

   

Gross

Unrealized

Losses

 
                         

June 1, 2025:

                       

U.S. Treasury and other government securities

  $ 45,564     $ 11     $ 628  

Total marketable securities

  $ 45,564     $ 11     $ 628  
                         

March 2, 2025:

                       

U.S. Treasury and other government securities

  $ 48,124     $ 24     $ 935  

Total marketable securities

  $ 48,124     $ 24     $ 935  
Investments Classified by Contractual Maturity Date [Table Text Block]

Due in one year or less

  $ 36,291  

Due after one year through five years

    8,656  
    $ 44,947