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Note 6 - Shareholders' Equity (Tables)
12 Months Ended
Feb. 27, 2022
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   

February 27, 2022

   

February 28, 2021

 
                 

Unrealized losses on investments, net of taxes of $1,629 and $1,004, respectively

  $ (1,965 )   $ (336 )

Accumulated balance

  $ (1,965 )   $ (336 )