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Inventories (Tables)
 12 Months Ended
Dec. 26, 2015
Inventories [Abstract]  
Inventories
(In thousands)
 
2015
  
2014
 
 
 
  
 
Raw materials and supplies
 
$
58,987
  
$
53,586
 
Work-in-process
  
25,161
   
39,707
 
Finished goods
  
161,410
   
168,481
 
Valuation reserves
  
(6,180
)
  
(5,189
)
 
        
Inventories
 
$
239,378
  
$
256,585