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Note 6 - Inventories (Tables)
6 Months Ended
Nov. 27, 2016
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
November 27,
2016
   
May 29,
2016
 
Finished goods
  $
10,736
    $
12,165
 
Raw materials
   
4,190
     
9,855
 
Work in progress
   
13,044
     
3,515
 
Total
  $
27,970
    $
25,535