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Note 10 - Stock-based Compensation (Tables)
12 Months Ended
May 01, 2021
Notes Tables  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
  

Number

of Shares

  

Price (a)

 

Options outstanding, beginning of year

  389,090  $7.01 

Granted

  266,500   31.27 

Exercised

  (69,490)  6.99 

Cancelled

  (25,000)  5.46 

Options outstanding, end of year

  561,100   17.74 

Options exercisable, end of year

  285,700   7.46