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Inventories (Tables)
9 Months Ended
Sep. 26, 2015
Inventories [Abstract]  
Inventories
(In thousands)
 
September 26, 2015
  
December 27, 2014
 
   
     
Raw materials and supplies
 
$
55,522
  
$
53,586
 
Work-in-process
  
38,689
   
39,707
 
Finished goods
  
162,780
   
168,481
 
Valuation reserves
  
(6,192
)
  
(5,189
)
         
Inventories
 
$
250,799
  
$
256,585