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Note 11 - Commitments and Contingencies (Tables)
12 Months Ended
Apr. 27, 2019
Notes Tables  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
   
(In thousands)
 
Fiscal 2020
  $
16,105
 
Fiscal 2021
   
12,084
 
Fiscal 2022
   
9,894
 
Fiscal 2023
   
7,741
 
Fiscal 2024
   
4,510
 
Thereafter
   
1,703
 
Total minimum lease payments
  $
52,037