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Note 7 - Property and Equipment (Tables)
 12 Months Ended
Dec. 30, 2018
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
END OF FISCAL YEAR
  
   
2018
    
2017
  
   
(in thousands)
  
Land
   $
16,870
     $
17,743
  
Buildings
    
143,725
      
130,919
  
Equipment
    
565,251
      
371,300
  
                 
     
725,846
      
519,962
  
Accumulated depreciation
    
(432,958
 )    
(307,317
 )
                 
Property and Equipment
   $
292,888
     $
212,645