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Note 6 - Inventories (Tables)
12 Months Ended
Dec. 30, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
END OF FISCAL YEAR
 
   
2018
   
2017
 
   
(in thousands)
 
Finished goods
  $
180,847
    $
115,512
 
Work-in-process
   
17,762
     
13,022
 
Raw materials
   
60,048
     
49,401
 
                 
Inventory, Net
  $
258,657
    $
177,935