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Note 10 - Pension Plans (Tables)
12 Months Ended
Apr. 27, 2019
Notes Tables  
Schedule of Multiemployer Plans [Table Text Block]
   
(In thousands)
 
   
Fiscal
   
Fiscal
   
Fiscal
 
Pension Fund
 
2019
   
2018
   
2017
 
CSSS Fund
  $
1,465
    $
1,370
    $
1,262
 
WCT Fund    
769
     
619
     
477
 
Other multi-employer pension funds
   
222
     
228
     
201
 
Total
  $
2,456
    $
2,217
    $
1,940