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Inventories
12 Months Ended
Dec. 27, 2014
Inventory Disclosure [Abstract]  
Inventories
Inventories
 
Inventories by major category are as follows (in thousands):
 
 
 
2014
 
2013
Raw materials
 
$
45,341

 
$
62,241

Work in process
 
19,649

 
21,698

Finished goods
 
72,020

 
77,626

 
 
$
137,010

 
$
161,565